Relevant bibliographies by topics / Flexible Sensors

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'Flexible Sensors'

Author: Grafiati
Published: 4 June 2021
Last updated: 24 August 2024

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Journal articles on the topic "Flexible Sensors"

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Chen, Junru. "Flexible Pressure Sensors and Their Applications." Highlights in Science, Engineering and Technology 44 (April 13, 2023): 54–60. http://dx.doi.org/10.54097/hset.v44i.7193.

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The application of flexible pressure sensor is a new type of pressure sensor based on new materials prepared by a nano process. It differs from conventional pressure sensors due to its good flexibility, free bending, small thickness, high sensitivity, and ease of mass production, and is particularly suited for measuring soft surface contact stress. It has several potential applications in smart homes, smart medicine, wearable gadgets, and other domains. The microstructure can not only increase the sensor's sensitivity, but it can also recover the sensor's elastic deformation more quickly, so it has a swift duty. The capacitive flexible pressure sensor will be introduced first, followed by the resistive pressure sensor, and then their practical applications will be discussed. This paper's research will contribute significantly to the study and implementation of flexible pressure sensors. It will contribute significantly to the study and application of flexible pressure sensors.
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Syamimi, Nor, and Shuhaida Yahud. "General design criteria for neonatal temperature monitoring sensor using "smart material" conducting polymer development: A review." Applied Research and Smart Technology (ARSTech) 2, no. 1 (June 23, 2021): 18–26. http://dx.doi.org/10.23917/arstech.v2i1.185.

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Surface thermistors are being currently used in patient monitoring, including temperature monitoring among neonates. However, these thermistors are reported as being mechanically rigid. This review article aims to provide researchers with a guide to better design a flexible neonatal temperature monitoring sensor. A literature search was conducted to obtain available literature on temperature sensors with specific attention to designing flexible temperature sensors. The achievement of a flexible type thermistor for neonates requires a basic understanding of the thermistor. Also, the conducting polymer material being used and the rationale for their placement. The updated technology in thermistors should be made flexible for the ease of neonates during monitoring. Careful considerations for the design and conduct of flexible temperature sensor research as outlined in this review would help to enhance the quality and comparability of future research studies. Considerations for efficient neonatal temperature monitoring and protection include accuracy, sensor's size, weight, material, and sensor placement. Flexible sensors could be the alternative to conventional bulky and stiff temperature sensors.
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Liu, Haotian, Beining Zhang, and Ziang Zheng. "Flexible pressure sensor for the detection of human body signals." Applied and Computational Engineering 7, no. 1 (July 21, 2023): 507–15. http://dx.doi.org/10.54254/2755-2721/7/20230428.

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In 2016, flexible sensors only accounted for 8% of the market share, but in 2018, they increased to 27%, and the development trend is still rising. In scientific research, the research on flexible sensors is very hot. It can be seen that flexible sensors are one of the key topics of current research. Researchers have found that this type of sensor has good ductility and portability. However, there is a gap in the field of biological signals for flexible sensors. The flexibility of flexible sensors explores the credibility of the flexible sensor in detecting human pulse signals. It uses different machines, such as a multimeter, and SEM, to verify whether its basic properties, including stability and sensitivity, meet the needs of detecting human signals. The flexible sensor has good stability. Because it is made of RGO, it has higher sensitivity. The converted electrical signal is easier to receive and analyze. Using PDMS as the base material of the flexible sensor can make the flexible sensor have better bendability. This paper introduces the current world of common flexible sensors and different kinds of flexible sensors in different fields of application. The fabrication of a flexible pressure sensor based on RGO is then described in detail. Moreover, the basic properties of flexible pressure sensors are used to verify the possibility of detecting signals for the human body.
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Cao, Yuxuan. "Resent Researches and Applications on Piezoresistive Flexible Pressure Sensor." E3S Web of Conferences 553 (2024): 05006. http://dx.doi.org/10.1051/e3sconf/202455305006.

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Recent developments in piezoresistive flexible pressure sensors have generated a lot of interest because of the possible uses across numerous industries. With a focus on improving sensor performance, this paper covers current developments in the area of piezoresistive flexible pressure sensors. Over the years, there has been a growing interest in improving the capabilities of these sensors, leading researchers to explore various avenues for enhancement. The review highlights two primary areas of research: the optimization of active materials and the enhancement of sensor structures. These areas are actively being investigated to achieve superior sensor performance and overall functionality. In addition to utilizing high-quality materials, optimizing the sensor’s structure is crucial for achieving improved sensitivity, accuracy, and stability. The review also explores the wide range of applications where pressure sensors have made significant contributions, including human motion monitoring, healthcare, and other domains. Flexible and highly sensitive pressure sensors have the potential to revolutionize several sectors and open up new opportunities.
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Palanisamy, Srinivasan, Muthuramalingam Thangaraj, Khaja Moiduddin, Hisham Alkhalefah, Panagiotis Karmiris-Obratański, and Cheng Siong Chin. "Design, Fabrication, and Optimization of a Printed Ag Nanoparticle-Based Flexible Capacitive Sensor for Automotive IVI Bezel Display Applications." Sensors 23, no. 9 (April 23, 2023): 4211. http://dx.doi.org/10.3390/s23094211.

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Since printed capacitive sensors provide better sensing performance, they can be used in automotive bezel applications. It is necessary to fabricate such sensors and apply an optimization approach for choosing the optimal sensor pattern. In the present work, an effort was made to formulate interdigitated pattern-printed Silver (Ag) electrode flexible sensors and adopt the Taguchi Grey Relational (TGR)-based optimization approach to enhance the flexible sensor’s panel for enhanced automobile infotainment applications. The optimization technique was performed to derive better design considerations and analyze the influence of the sensor’s parameters on change in capacitance when touched and production cost. The fabricated flexible printed sensors can provide better sensing properties. A design pattern which integrates an overlap of 15 mm, an electrode line width of 0.8 mm, and an electrode gap 0.8 mm can produce a higher change in capacitance and achieve a lower weight. The overlap has a greater influence on sensor performance owing to its optimization of spatial interpolation.
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Pistriţu, Florian, Marin Gheorghe, Marian Ion, Oana Brincoveanu, Cosmin Romanitan, Mirela Petruta Suchea, Paul Schiopu, and Octavian Narcis Ionescu. "On the Development of a New Flexible Pressure Sensor." Micromachines 15, no. 7 (June 29, 2024): 847. http://dx.doi.org/10.3390/mi15070847.

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The rapid advancement of the Internet of Things (IoT) serves as a significant driving force behind the development of innovative sensors and actuators. This technological progression has created a substantial demand for new flexible pressure sensors, essential for a variety of applications ranging from wearable devices to smart home systems. In response to this growing need, our laboratory has developed a novel flexible pressure sensor, designed to offer an improved performance and adaptability. This study aims to present our newly developed sensor, detailing the comprehensive investigations we conducted to understand how different parameters affect its behaviour. Specifically, we examined the influence of the resistive layer thickness and the elastomeric substrate on the sensor’s performance. The resistive layer, a critical component of the sensor, directly impacts its sensitivity and accuracy. By experimenting with varying thicknesses, we aimed to identify the optimal configuration that maximizes sensor efficiency. Similarly, the elastomeric substrate, which provides the sensor’s flexibility, was scrutinized to determine how its properties affect the sensor’s overall functionality. Our findings highlight the delicate balance required between the resistive layer and the elastomeric substrate to achieve a sensor that is both highly sensitive and durable. This research contributes valuable insights into the design and optimization of flexible pressure sensors, paving the way for more advanced IoT applications.
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Feng, Ziyi, Ziyang Liu, Tianying Shao, and Yifei Zhang. "Application of nanomaterials in flexible sensors." Applied and Computational Engineering 23, no. 1 (November 7, 2023): 162–69. http://dx.doi.org/10.54254/2755-2721/23/20230647.

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Flexible electronic sensors have widespread applications in both traditional and emerging fields, particularly for human-computer interaction (electronic skins, wearable electronic devices) and physical and environmental monitoring for people. Flexible electronic sensors can be bent and folded readily without interfering with their detecting performance. However, researchers still face many difficulties. For instance, traditional flexible materials (such as organic materials) are less sensitive to external signals, and the production progress of flexible sensors is complicated. This review recapitulates applications of nanomaterials in flexible electronic sensors. Firstly, the working principles and applications of three common types of flexible electronic sensors, the piezoresistive sensor, the capacitive sensor, and the piezoelectric sensor, are introduced. Then, the paper summarizes methods for improving sensors performance in health monitoring, disease diagnosis and biological detection by application of different nanomaterials to flexible substrates. Finally, the future development of flexible nanomaterial sensors prospects. It is found that nanocomposites of metal nanomaterials, carbon nanomaterials and other polymers with unique tuned photoelectrical properties show enhanced performance as flexible sensors and further research is needed to improve the material-substrate integration to promote the large-scale application as wearable sensors.
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Song, Chenyu. "Flexible Capacitive Pressure Sensors and Approaches to Enhance Sensitivity." Highlights in Science, Engineering and Technology 44 (April 13, 2023): 41–48. http://dx.doi.org/10.54097/hset.v44i.7191.

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Many research groups have become interested in the flexible capacitive pressure sensor in recent years. It has many applications, such as electronic skin and fingerprint collection devices. One of the challenges is optimizing the sensor's design, which can be achieved by improving its sensitivity. The flexible capacitive pressure sensor outperforms other pressure sensors in terms of efficiency, response time, and cost. In the future, more applications will use the flexible capacitive pressure sensor as the component. Thus, improving its sensitivity becomes significant. The topic of this review is to briefly introduce the flexible capacitive pressure sensor's mechanism, how to achieve high sensitivity and any potential applications that already exist in the market. It will also go over some experiments to improve the sensor's sensitivity and their benefits. In the end, the future expectations of the capacitive pressure sensor will also be discussed. The topic of this review will be significant to the development of electronic devices.
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Li, Pengfei, Zhijie Li, Hongyue Chen, Yunji Zhu, Dada Yang, and Yang Hou. "Graphene-Based Flexible Strain Sensor Based on PDMS for Strain Detection of Steel Wire Core Conveyor Belt Joints." Sensors 23, no. 17 (August 28, 2023): 7473. http://dx.doi.org/10.3390/s23177473.

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Because of their superior performance, flexible strain sensors are used in a wide range of applications, including medicine and health, human–computer interaction, and precision manufacturing. Flexible strain sensors outperform conventional silicon-based sensors in high-strain environments. However, most current studies report complex flexible sensor preparation processes, and research focuses on enhancing and improving one parameter or property of the sensors, ignoring the feasibility of flexible strain sensors for applications in various fields. Since the mechanical properties of flexible sensors can be well combined with rubber conveyor belts, in this work polydimethylsiloxane (PDMS) was used as a flexible substrate by a simple way of multiple drop coating. Graphene-based flexible strain sensor films that can be used for strain detection at the joints of steel cord core conveyor belts were successfully fabricated. The results of the tests show that the sensor has a high sensitivity and can achieve a fast response (response time: 43 ms). Furthermore, the sensor can still capture the conveyor belt strain after withstanding high pressure (1.2–1.4 MPa) and high temperature (150 °C) during the belt vulcanization process. This validates the feasibility of using flexible strain sensors in steel wire core conveyor belts and has some potential for detecting abnormal strains in steel wire core conveyor belt, broadening the application field of flexible sensors.
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Zhang, Ziyan. "Principle and Application of Flexible Pressure Sensors." SHS Web of Conferences 157 (2023): 01026. http://dx.doi.org/10.1051/shsconf/202315701026.

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Flexible pressure sensors are widely used in many ways, including health care and machine sensors. Compared with the traditional flexible pressure sensor, flexible pressure sensor has quality is light, easy to carry and deformation degree higher advantages are modern science and technology advanced has broad prospects for the development of technology products. In recent years, Remarkable progress has been made in the field of flexible pressure sensors. However, it is still a big challenge to realize the high resolution, high sensitivity, fast response, low-cost manufacturing and complex signal detection of flexible pressure sensors. This paper will introduce the mechanism of the flexible pressure sensor and improve the sensitivity by using the microstructure and the practical application. The research in this paper will have a very important value for the research and application of the flexible pressure sensor.
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Dissertations / Theses on the topic "Flexible Sensors"

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Favaro, Matteo. "Nanostructured flexible radiation sensors." Doctoral thesis, Università degli studi di Trento, 2021. http://hdl.handle.net/11572/310045.

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Flexible scintillating radiation detectors have gained increasing attention in the scientific community in the last decade. They represent a fast and easy way for monitoring the impinging radiation in real time and acquire the dose released in medical treatments, like cancer radio- or proton-therapy sessions. Flexible linear-chain polysiloxane detectors offer the possibility to overcome geometrical limitations, they possess superior optical transparency and flexibility, and can be obtained with contained production costs and times, making them highly competitive with respect to traditional single-crystals and plastics. Unlike phenyl-containing siloxanes, linear polysiloxanes does not show direct interaction with the impinging radiation, therefore they can be used just as matrices for hosting luminescent materials, such as nanocrystals or nanopowders. Quantum dots (QDs) are nanocrystals showing quantum confinement effects, with an incredible light yield, a tunable emission wavelength and a fast decay lifetime. For these reasons, they are worth being incorporated in siloxane-based scintillators as primary dyes, without the need of complex ternary systems. Part of this thesis analyzes the effects of ionizing radiation on the luminescence and temporal response of QD-loaded polysiloxanes for radiation detection and monitoring, with special focus on real-time measurements under proton beam. Another possibility is to embed luminescent nanopowders, such as zinc oxide (ZnO) and reduced zinc oxide (ZnO:Zn). The Zn-rich form shows a remarked green luminescence, with increasing light yield as a function of the reduction degree, i.e. zinc content. In view of the above, this thesis reports the advances on polysiloxanes loaded with ZnO and ZnO:Zn phosphors. The core of the thesis is devoted to the progresses in ZnO production and treatment for the realization of multi-layered flexible scintillators. A special focus is putted on a novel production route based on atmospheric pressure plasma (APPJ), that allows for the co-deposition of ZnO-loaded plasma polymers and for the doping via liquid precursor solution.
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Favaro, Matteo. "Nanostructured flexible radiation sensors." Doctoral thesis, Università degli studi di Trento, 2021. http://hdl.handle.net/11572/310045.

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Flexible scintillating radiation detectors have gained increasing attention in the scientific community in the last decade. They represent a fast and easy way for monitoring the impinging radiation in real time and acquire the dose released in medical treatments, like cancer radio- or proton-therapy sessions. Flexible linear-chain polysiloxane detectors offer the possibility to overcome geometrical limitations, they possess superior optical transparency and flexibility, and can be obtained with contained production costs and times, making them highly competitive with respect to traditional single-crystals and plastics. Unlike phenyl-containing siloxanes, linear polysiloxanes does not show direct interaction with the impinging radiation, therefore they can be used just as matrices for hosting luminescent materials, such as nanocrystals or nanopowders. Quantum dots (QDs) are nanocrystals showing quantum confinement effects, with an incredible light yield, a tunable emission wavelength and a fast decay lifetime. For these reasons, they are worth being incorporated in siloxane-based scintillators as primary dyes, without the need of complex ternary systems. Part of this thesis analyzes the effects of ionizing radiation on the luminescence and temporal response of QD-loaded polysiloxanes for radiation detection and monitoring, with special focus on real-time measurements under proton beam. Another possibility is to embed luminescent nanopowders, such as zinc oxide (ZnO) and reduced zinc oxide (ZnO:Zn). The Zn-rich form shows a remarked green luminescence, with increasing light yield as a function of the reduction degree, i.e. zinc content. In view of the above, this thesis reports the advances on polysiloxanes loaded with ZnO and ZnO:Zn phosphors. The core of the thesis is devoted to the progresses in ZnO production and treatment for the realization of multi-layered flexible scintillators. A special focus is putted on a novel production route based on atmospheric pressure plasma (APPJ), that allows for the co-deposition of ZnO-loaded plasma polymers and for the doping via liquid precursor solution.
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Clayton, Marianne E. "Modeling Piezoresistive Effects in Flexible Sensors." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7396.

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This work describes a model of the piezoresistive behavior in nanocomposite sensors. These sensors are also called flexible sensors because the polymer matrix allows for large deformations without failure. The sensors have conductive nanoparticles dispersed through an insulative polymer matrix. The insulative polymer gaps between nanoparticles are assumed to be possible locations for electron tunneling. When the distance between two nanoparticles is small enough, electrons can tunnel from one nanoparticle to the next and ultimately through the entire sensor. The evolution of this gap distance with strain is important to understand the overall conductivity of the strain sensor. The gap evolution was modeled in two ways: (1) applying Poisson's contraction to the sensor as a homogenous material, referred to as Simple Poisson's Contraction (SPC) and (2) modeling the nanoparticle-polymer system with Finite Element Analysis (FEA). These two gap evolution models were tested in a random resistor network model where each polymer gap was treated as a single resistor in the network. The overall resistance was calculated by solving the resistor network system. The SPC approach, although much simpler, was sufficient for cases where various orientations of nanoparticles were used in the same sensor. The SPC model differed significantly from the FEA, however, in cases where nanoparticles had specific alignment, e.g. all nanoparticles parallel to the tensile axis. It was also found that the distribution used to determine initial gap sizes for the polymer gaps as well as the mean of that distribution significantly impacted the overall resistivity of the sensor.Another key part of this work was to determine if the piezoresistivity in the sensors follows a percolation type behavior under strain. The conductance versus strain curve showed the characteristic s-curve behavior of a percolative system. The conductance-strain curve was also compared to the effective medium and generalized effective medium equations and the latter (which includes percolation theory) fit the random resistor network much more closely. Percolation theory is, therefore, an accurate way to describe this polymer-nanoparticle piezoresistive system.Finally, the FEA and SPC models were compared against experimental data to verify their accuracy. There are also two design problems addressed: one to find the sensor with the largest gauge factor and another to determine how to remove the characteristic initial spike in resistivity seen in nanocomposite sensors.
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SIMOES, TIAGO BALTAR. "MONITORING FLEXIBLE RISERS WITH OPTICAL FIBER SENSORS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=18538@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
O interesse no monitoramento da integridade estrutural de risers flexíveis tem crescido significativamente nos últimos anos. Para dutos que já estão atingindo sua vida de projeto, sistemas de monitoramento podem fornecer alertas antecipados de possíveis falhas e também auxiliar o operador na programação de paradas para manutenção. Diferentes técnicas estão sendo testadas pelos operadores de dutos flexíveis tais como inspeção visual automatizada, monitoramento de vibrações e emissão acústica, além de técnicas baseadas em métodos eletromagnéticos. Algumas destas técnicas já estão sendo implementadas em unidades de exploração e produção marítimas no Brasil e em outros países. A presente contribuição aborda o monitoramento contínuo e em tempo real utilizando sensores a fibra óptica (Redes de Bragg) para detectar a ruptura dos arames nas armaduras de tração de risers flexíveis. Duas linhas são seguidas, monitoramento direto e monitoramento indireto. O monitoramento indireto consiste na instrumentação da capa polimérica do riser, de forma não intrusiva, e avalia possíveis alterações na mesma, causadas pelo rompimento dos arames. Para isso foi desenvolvido um transdutor, denominado Colar 3D, capaz de detectar variações no diâmetro externo, elongação e torção no duto. A técnica de monitoramento direto é denominada MODA (Monitoramento Óptico Direto nos Arames). Nesta técnica os arames são instrumentados individualmente com os sensores ópticos, que monitoram as tensões/deformações dos mesmos, assim, rompimentos de arames e comportamentos inesperados podem ser facilmente detectados. Resultados de ensaios em escala real mostraram que a probabilidade de detecção do monitoramento indireto aumenta significativamente quando o sistema é empregado em conjunto com outros tipos de monitoramento indireto. Os resultados de laboratório para o monitoramento direto apontaram alta sensibilidade e confiabilidade do sistema, que já foi instalado em três plataformas operadas pela Petrobra na Bacia de Campos.
The interest in structural health monitoring of flexible risers has grown significantly in recent years. For ducts that are already reaching their design life, monitoring systems can provide early warnings of potential failures and also assist the operator in scheduling downtime. Different techniques are being tested by operators of flexible pipes such as automated visual inspection, vibration monitoring and acoustic emission, in addition to techniques based on electromagnetic methods. Some of these techniques are already being implemented in units of maritime exploration and production in Brazil and other countries. This contribution discusses the continuous monitoring and real-time using optical fiber sensors (FBGs) to detect the breaking of wires in the tensile armor of flexible risers. Two lines are followed, direct monitoring and indirect monitoring. The proposed indirect monitoring technique consists in the nonintrusive instrumentation of the riser’s polymeric outer sheath, which will provide strain signals that change due to the breaking of wires in the armor layer. For that, a transducer capable of detecting variations in the outer diameter, as well as stretching and twisting in the duct was developed. In the direct monitoring technique, all the wires in the external armor layer are individually instrumented with optical sensors that continuously monitor their strains, so that any disruptions of wires and unexpected behavior can be easily detected. Results of full scale laboratory tests showed that the probability of detection of indirect monitoring increases significantly when the system is used in conjunction with other types of indirect monitoring. The laboratory results for the direct monitoring showed high sensitivity and reliability of the system, which has already been installed in three oil rigs operated by Petrobras in the Campos Basin.
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Alvarado, Pérez Miriam. "Development of Flexible Gas Sensors Based on Additive Fabrication Processes." Doctoral thesis, Universitat Rovira i Virgili, 2020. http://hdl.handle.net/10803/669439.

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Els sensors de gasos s’utilitzen per a monitoritzar ambients interiors i exteriors. Algunes aplicacions comuns són per a mesurar el nivell de contaminants als carrers, els gasos alliberats per les fuites industrials i d’automòbils, els gasos a la mineria, el contingut d’alcohol en sang a través de l’alè exhalat, etc. A mesura que creix el camp d’aplicació dels sensors de gasos, es fa necessari adaptar els sensors de gasos als nostres dispositius i pertinences diàries. Es requereixen materials mecànicament flexibles i resistents per a fabricar sensors de gasos flexibles. A banda de proves de detecció de gas, la resistència a la flexió dels sensors ha de provar-se per anomenar “flexible” a un sensor. L’objectiu principal d’aquesta tesi és fabricar sensors de gasos flexibles mitjançant processos additius emprant òxids metàl·lics com a materials sensibles. Els sensors de gasos flexibles es varen fabricar utilitzant un substrat polimèric flexible (Kapton). Els diferents processos emprats varen ser compatibles amb la temperatura de funcionament del substrat. Entre les tècniques emprades estan la plantilla, la serigrafia, la injecció de tinta, AA-CVD. A més a més, es varen realitzar processos superficials per a millorar l’adhesió dels òxids metàl·lics al substrat polimèric. La flexibilitat dels sensors es va provar realitzant una prova de flexió cíclica.
Los sensores de gas se utilizan para monitorear ambientes interiores y exteriores. Algunas aplicaciones comunes son para medir: el nivel de contaminantes en las calles, los gases liberados por los escapes industriales y de automóviles, los gases en la minería, el contenido de alcohol en la sangre a través del aliento exhalado, etc. A medida que crece el campo de aplicación de los sensores de gas, se hace necesario adaptar los sensores de gas a nuestros dispositivos y pertenencias diarias. Se requieren materiales mecánicamente flexibles y resistentes para fabricar los sensores de gas flexibles. Además de las pruebas de detección de gas, la resistencia a la flexión de los sensores debe probarse para llamar “flexible” a un sensor. El objetivo principal de esta tesis es fabricar sensores de gas flexibles a través de procesos aditivos utilizando óxidos metálicos como materiales sensibles. Los sensores de gas flexibles se fabricaron utilizando un sustrato polimérico flexible (Kapton). Los diferentes procesos empleados fueron compatibles con la temperatura de la temperatura de funcionamiento del sustrato. Entre las técnicas empleadas están la plantilla, la serigrafía, la inyección de tinta, AA-CVD. Además, se realizaron procesos superficiales para mejorar la adhesión de los óxidos metálicos al sustrato polimérico. La flexibilidad de los sensores se probó realizando una prueba de flexión cíclica.
Gas sensors are used to monitor indoor and outdoor environments. Some common applications are to measure: the level of pollutants in the streets, the gases liberated by industrial and car exhausts, gases in mining, blood alcohol content through the exhaled breath, etc. As the field of application for gas sensors is growing, it becomes necessary to adapt the gas sensors to our daily devices and belongings. This requires mechanically flexible and resistant materials to fabricate the flexible gas sensors. In addition to gas sensing tests, the resistance to bending of the sensors should be tested to call a sensor flexible. The main objective of this thesis is to fabricate flexible gas sensors through additive processes using metal oxides as sensitive materials. The flexible gas sensors were fabricated using a flexible polymeric substrate (Kapton). The different processes employed were compatible with the temperature of the operating temperature of the substrate. Among the techniques employed are stencil, screen-printing, inkjet-printing, AA-CVD. Also, surface processes were performed to improve the adhesion of the metal oxides to the polymeric substrate. The flexibility of the sensors was tested by performing a cyclical bending test.
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Acuautla, Meneses Monica Isela. "Development of ozone and ammonia gas sensors on flexible substrate." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4337/document.

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L'émergence des nouvelles applications dans le domaine de la micro et nanotechnologie requière de faibles coûts de fabrication et la caractérisation de dispositifs électroniques ayant des propriétés telles que la flexibilité, la portabilité, la légèreté, et des matériaux de faibles coûts. Les méthodes traditionnelles de fabrication impliquent de longues étapes de production, et des procédés de fabrication impliquant des étapes avec des produits chimiques. Le but de cette thèse est d'étudier la conception et la caractérisation de capteurs d'ammoniac et d'ozone sur support souple fabriqués par des processus de photolithographie et de gravure laser. Le support flexible est composé de Kapton avec des électrodes interdigitées de Ti/Pt pour la détection de gaz et un microchauffage. Les motifs du circuit ont été réalisés par photolithographie et gravure laser. L'utilisation de gravure laser sur support souple permet de réduire les coûts liés au temps de fabrication, aussi représente une excellente alternative aux processus chimiques. Des nanoparticles de ZnO déposées par gouttes ont été utilisées comme matériaux sensibles en raison de leurs excellentes propriétés dans la détection de gaz. Les conditions de détection de gaz ont été étudiées pour différentes concentrations d'ozone et d'ammoniac. Afin de tester une méthode de dépôt utilisée dans la production industrielle à grande échelle, un dépôt par spray ultrasonique a été effectué. Les capteurs réalisés montrent une large gamme de détection de 5 ppb à 500 ppb à 200 °C pour l'ozone et de 5 ppm à 100 ppm à 300 °C pour l'ammoniac avec une bonne reproductibilité, stabilité et de rapides temps de réponse et de retourn
Nowadays the emerging of new applications in the micro and nanotechnology field required to reduce fabrication costand to improve electronic devices with properties such as flexibility, portability, lightweight, and low cost. Traditional methods involve expensive and long production steps, and chemical vapor deposition. The purpose of this work is to present the conception and characterization of flexible ammonia and ozone sensors fabricated by photolithography and laser ablation processes. The flexible platform is composed of Kapton substrate with interdigitated Ti/Pt electrodes for gas detection and a micro-heater device. The circuit patterns were realized by photolithography and laser ablation. Photolithography is a well-known and reliable patterning process used on rigid substrate. The application of laser ablation process not only reduces fabrication time, but also represents an excellent viable alternative instead of chemical processes. ZnO thin films deposited by drop coating have been used as sensitive materials due to their excellent properties in the gas detection. The gas sensing condition and the performances of the devices are investigated for ozone and ammonia at different gas concentrations and different thin film thicknesses. In order to test a deposit methodology used in large scale industrial production, an ultrasonic spray deposition was done. The sensor provides a wide range of detection from 5 ppb to 500 ppb for ozone and from 5 ppm to 100 ppm for ammonia. Their best sensibilities were obtained at 200°C for ozone and 300 °C for ammoniac with good repeatability, stability and fast response/recovery time
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FAPANNI, TIZIANO. "Sensors Design for E-Skin by Printed and Flexible Electronics." Doctoral thesis, Università degli studi di Brescia, 2023. https://hdl.handle.net/11379/568964.

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Il miglioramento delle condizioni di vita ottenuto negli ultimi anni ha generato un aumento e un invecchiamento della popolazione, creando il bisogno di un nuovo paradigma di sanità intelligente dove sia possibile monitorare da remoto la variazione dello stato fisiologico dei pazienti. In questo contesto, gli e-skin, definibili come dispositivi flessibili che incorporano array di sensori, rappresentano una tecnologia all'avanguardia che permette il monitoraggio di differenti parametri fisiologici direttamente dal corpo umano in modo non invasivo grazie alle loro ridotte dimensioni. Per via di queste loro caratteristiche, gli e-skin sono promettenti in varie applicazioni come quello industriale, la prostetica e al già citato campo clinico. Questa loro grande applicabilità è resa possibile dai molteplici sensori che permettono di acquisire dati in modo preciso e distribuito. In questo contesto infatti, i sensori hanno assunto un ruolo centrale dal momento che hanno come compito principale la trasduzione dei differenti segnali d'interesse come ad esempio temperature, pressioni, deformazioni, biopotenziali e marcatori biochimici (e.g. ioni, metaboliti, metalli pesanti, amminoacidi, ormoni, farmaci, stupefacenti, ...). Quest'ultimo gruppo di marcatori sta recentemente suscitando un enorme interesse da parte della comunità scientifica dal momento che permettono il veloce riconoscimento di molteplici stati fisiologici e patologici. Ad oggi, per la misura di questi marcatori biochimici, la ricerca si sta concentrando sui biosensori dal momento che sono un'alternativa valida, più economica e di uso più facile rispetto ad altre tecniche di analisi di laboratorio (e.g. protocolli ELISA, cromatografia, ...) ad oggi usate come gold standard. Fra i possibili principi di trasduzione adottati correntemente per i biosensori in letteratura, l'elettrochimica presenta molteplici vantaggi fra cui un basso costo, un' alta sensibilità e l'uso di strumentazioni relativamente semplici. In questa tesi, verranno descritti differenti approcci per lo sviluppo e il miglioramento di sensori elettrochimici stampati applicati agli e-skin. La discussione partirà da una breve descrizione del principio di trasduzione di questi sensori e si focalizzerà in seguito prima su differenti approcci per il miglioramento delle caratteristiche metrologiche e poi sulla valutazione, monitoraggio e mitigazione delle componenti d'incertezza che possono influire sui dispositivi proposti. In questo contesto, la tesi si aprirà con una revisione della letteratura per introdurre i concetti generali riguardanti gli e-skin e i biosensori, in modo tale da poter comprendere meglio sia il loro principio di trasduzione e le loro limitazioni attuali. In seguito, sarà presentato un primo prototipo di un e-skin multisensing per la misura non invasiva e personalizzata dell'affaticamento muscolare che comprende sia un sensore elettromiografico (EMG) a 8 canali sia un sensore elettrochimico. I risultati ottenuti sono promettenti, ma per quanto riguarda il sensore elettrochimico le prestazioni non sono completamente soddisfacenti per l'applicazione e devono pertanto essere migliorate. Partendo da queste considerazioni, i successivi due progetti si concentrano sulle modalità di miglioramento della sensibilità e del limite di identificazione (limit of detection, LOD) sfruttando micro- e nano- strutturazione della superficie. In seguito, il lavoro si è concentrato su tutti gli elementi che possono introdurre incertezza sul segnale misurato in modo tale da comprendere meglio la qualità e l'affidabilità dei sensori elettrochimici stampati con AJP proposti. Fra queste fonti d’’incertezza si è riscontrato che la temperatura agisce da variabile d’influenza e pertanto se ne è approfondito lo studio per provare poi a compensare per mezzo di sensori stampati innovativi.
In the modern era where the overall living conditions improve, the population increases and ages, the need for a new paradigm of smart healthcare is arising where the need to monitor and track the changes in the physiological status of patients or sports professionals represents the main objective of the scientific community. In this frame, e-skin devices, defined as flexible devices that embed arrays of sensors, are cutting-edge technology that is promising to monitor different physiological parameters from the human body in a non-invasive way thanks to their reduced size and bulkiness. Thanks to these characteristics, e-skins are promising in a plethora of applications and fields other than the clinical one such as the industrial environment and prosthesis. Their wide applicability is enabled by the vast amount of sensors that allow precise and distributed data collection. In this frame, sensors become central to transduce from the body the signals of interest such as temperatures, pressures, deformations, biopotentials and biochemical markers (e.g. ions, metabolites, heavy metals, amino acids, hormones, drugs...). This last class of markers is lately attracting huge interest from the scientific community since they allow the quick detection of a plethora of physiological conditions. Currently, biosensors are researched to detect those signals as they are valid, cheaper and easier to use than standard in-lab analysis methods (e.g ELISA protocols, chromatography, ...). Moreover, among the possible transduction principles currently employed for biosensors, the electrochemical one presents, according to the literature, many advantages such as low cost, high sensitivity and simple instrumentation. In this thesis, different approaches for the development and improvement of printed electrochemical sensors for e-skin application will be investigated. Exploiting the opportunities offered by novel printing technologies, such as Aerosol Jet Printing, the main focus was to improve the metrological characteristics as well as to evaluate, monitor and mitigate the uncertainty sources that could affect the devices. Before going into the experimental detail, the first part of the thesis will be dedicated to provide a description of the transducing principle behind the electorchemical measurements investigated. Further, literature will be deepened in order to the general concepts about e-skins and biosensors, including opportunities and limitations. Then, a prototype of a multi-sensing e-skin patch for unobtrusive and personalized fatigue assessment, that uses both an 8-channel electromyographic (EMG) sensor and an electrochemical sensor, will be presented. The achieved results are promising, but underline the need to increase the sensitivity of the printed electrochemical sensors. Starting from these cues, the next two projects that will be presented are focused on the scientific evidence to try to improve the sensitivity and the limit of detection of printed electrochemical sensors using both micro- and nano- structures. The final part of the thesis will focus on all those elements that can introduce uncertainty on the overall measured signals in order to better understand the quality and the reliability of the proposed aerosol jet printed electrochemical sensors. In this, a wide set of uncertainty components and influence variables can be identified. Among the latter, the temperature is one of the most relevant components of noise (and thus uncertainty) on those kinds of sensors, that have to be compensated using novel, fully-printed sensors.
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Anderberg, Axel. "Cryoballoon Catheters with sensors for treatment of AF." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-301158.

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Atrial fibrillation is a cardiac condition in which the heart rate is abnormally fast and/or irregular. While not yet proven to be fatal on its own, it severely increases the probability of developing further medical conditions including a five times higher risk of getting stroke. The prevalence has, over the past decades, increased significantly across the world and was in 2014 approximated at roughly 2% in the European population. Though, this number is expected to further increase in the coming years and decades. Therefore, in order to reduce suffering and save lives, it is vital that there is an efficient way of treating this condition. Current treatment methods include medicine, cardioversion, and tissue ablation. This thesis focuses on tissue ablation, more particularly cryoballoon ablation, which is a minimally invasive procedure in which a cryoballoon catheter is guided through a blood vessel (generally accessed through an incision made in the groin area) to the heart. When inside the atrial chambers the balloon can be inflated, put into contact with the faulty tissue and then be injected with liquid nitrous oxide which vaporizes and freezes said tissue isolating the currents causing the irregular heartbeat. This thesis aims to attach flexible electronics to the outside of the cryoballoon, which should then be able to inform the operator that adequate contact has been achieved before freezing, thereby increasing the probability of successful ablation. Three prototypes were created using polyurethane balloons, flexible circuit boards and a biocompatible, flexible cyanoacrylate adhesive. The flexible circuit boards were arranged in different patterns for each prototype to see which configuration would best suit the application. It was found that narrow strips (single trace) aligned axially and spaced evenly along the circumference best accomplished the goal. The traces did, however, not adhere as well to the balloon as was hoped which likely was due to user error during the gluing procedure but a further investigation may be desired to ensure that the materials and adhesive are compatible.
Förmaksflimmer är ett hjärtfel som gör att hjärtslagen blir ovanligt snabba och/eller oregelbundna. Trots att det inte bevisats vara direkt dödligt än, ökar det kraftigt risken för att utveckla ytterligare medicinska besvär, bland annat fem gånger större risk att drabbas av stroke. Utbredningen av förmaksflimmer har under de senaste decennierna ökat avsevärt över hela världen och under 2014 uppskattades det att ungefär 2 % av den europeiska befolkning var drabbade. Den här siffran förväntas dock fortsätta öka under de kommande åren och decennierna. Därför, för att i största mån lindra smärta samt förhindra dödsfall, är det mycket viktigt att det finns ett effektivt sätt att behandla tillståndet. I nuläget innefattas behandling av medicin, elektrokonvertering eller vävnadsablation. Det här examensarbetet fokuserar på ablation, närmare bestämt kryoballongsablation, vilket är ett minimalinvasivt ingrepp som innebär att en kryoballongskateter förs in genom en blodådra (ofta via ett snitt i ljumsken) in i hjärtat. Väl inne i förmakskammarna kan ballongen blåsas upp, läggas emot den felaktiga vävnaden och sedan fyllas med flytande kväveoxid som förångas och fryser vävnaden vilket isolerar strömmarna som ger upphov till den felaktiga hjärtrytmen. Målet med det här examensarbetet är att fästa flexibla kretskort på utsidan av dessa kryoballonger, vilka då ska kunna känna av fysisk kontakt med vävnaden och informera operatören om detta innan frysningen sker. Därmed bör sannolikheten för lyckad ablation öka. Tre prototyper tillverkades med polyuretanballonger, flexibla kretskort och ett biokompatibelt, flexibelt cyanoakrylatlim. Kretskorten arrangerades i olika mönster för respektive prototyper för att undersöka vilken konfiguration som skulle passa ändamålet bäst. Det visade sig att smala kretskort placerade längs med ballongen axiellt och jämnt utspridda längs med omkretsen gav bäst resultat. Däremot höll inte limmet så bra som förväntat vilket troligtvis handlar om användarfel vid limningen men en vidare utredning kan vara att önska för att säkerställa att limmet är kompatibelt med övriga material.
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Tan, Z. Y., M. Shikida, M. Hirota, and K. Sato. "Characteristics of On-Wall In Tube Thermal Flexible Mass-Flow Sensors." IEEE, 2006. http://hdl.handle.net/2237/9539.

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Cox, David E. "Active control of flexible structures using fiber optic modal domain sensors." Thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/42074.

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Books on the topic "Flexible Sensors"

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Nag, Anindya, Subhas Chandra Mukhopadhyay, and Jurgen Kosel. Printed Flexible Sensors. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13765-6.

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Gupta, Ram K. Flexible and Wearable Sensors. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003299455.

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Labyt, Etienne, Tilmann Sander, and Ronald Wakai, eds. Flexible High Performance Magnetic Field Sensors. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-05363-4.

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Skipidarov, Sergey, and Mikhail Nikitin, eds. Thin Film and Flexible Thermoelectric Generators, Devices and Sensors. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45862-1.

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Laurin, D. G. An optical system for shape sensing of flexible space structures. [S.l.]: [s.n.], 1993.

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Melashvili, Yuri. Controlled structures with electromechanical and fiber-optical sensors. Hauppauge, NY, USA: Nova Science Publishers, 2008.

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Dietz, Peter Robert Wilhelm. Determination of the efficacy of using accelerometers as sensors for third generation satellites. [Downsview, Ont.]: Dept. of Aerospace Science and Engineering, University of Toronto, 1986.

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Dietz, Peter Robert Wilhelm. Determination of the efficacy of using accelerometers as sensors for third generation satellites. [Downsview, Ont.]: Institute for Aerospace Studies, 1986.

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Newman, Scott M. Active damping control of a flexible space structure using piezoelectric sensors and actuators. Monterey, Calif: Naval Postgraduate School, 1992.

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Crocker, G. W. Digital real-time control of Daisy's reaction wheels, ribs and hub. Downsview, Ont: Dept. of Aerospace Science and Engineering, 1989.

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Book chapters on the topic "Flexible Sensors"

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Labille, Jérôme, Natalia Pelinovskaya, Céline Botta, Jean-Yves Bottero, Armand Masion, Dilip S. Joag, Richard G. Forbes, et al. "Flexible Sensors." In Encyclopedia of Nanotechnology, 865. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-90-481-9751-4_100252.

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Nag, Anindya, Subhas Chandra Mukhopadhyay, and Jurgen Kosel. "Introduction." In Printed Flexible Sensors, 1–15. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13765-6_1.

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Nag, Anindya, Subhas Chandra Mukhopadhyay, and Jurgen Kosel. "Literature Review." In Printed Flexible Sensors, 17–81. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13765-6_2.

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Nag, Anindya, Subhas Chandra Mukhopadhyay, and Jurgen Kosel. "Interdigitated Sensing and Electrochemical Impedance Spectroscopy." In Printed Flexible Sensors, 83–89. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13765-6_3.

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Nag, Anindya, Subhas Chandra Mukhopadhyay, and Jurgen Kosel. "Carbon Nanotubes-Polydimethylsiloxane Sensor." In Printed Flexible Sensors, 91–114. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13765-6_4.

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Nag, Anindya, Subhas Chandra Mukhopadhyay, and Jurgen Kosel. "Aluminium-Polyethylene Terephthalate Sensor." In Printed Flexible Sensors, 115–28. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13765-6_5.

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Nag, Anindya, Subhas Chandra Mukhopadhyay, and Jurgen Kosel. "Graphite-Polyimide Sensor." In Printed Flexible Sensors, 129–68. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13765-6_6.

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Nag, Anindya, Subhas Chandra Mukhopadhyay, and Jurgen Kosel. "Graphite-Polydimethylsiloxane Sensor." In Printed Flexible Sensors, 169–92. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13765-6_7.

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Nag, Anindya, Subhas Chandra Mukhopadhyay, and Jurgen Kosel. "Conclusion, Challenges and Future Work." In Printed Flexible Sensors, 193–98. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13765-6_8.

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Someya, Takao. "Sheet-Type Sensors and Actuators." In Flexible Electronics, 183–214. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-74363-9_7.

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Conference papers on the topic "Flexible Sensors"

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Yeon Hwa Kwak, Sungkyu Seo, and Kunnyun Kim. "A flexible strain-gauge sensor for flexible input devices." In 2015 IEEE Sensors. IEEE, 2015. http://dx.doi.org/10.1109/icsens.2015.7370608.

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Pozdin, Vladimir A., Murat A. Yokus, Peter Sotory, Natalie Wisniewski, Alper Bozkurt, and Michael A. Daniele. "Low-cost flexible inorganic optical devices for flexible sensors." In 2017 IEEE SENSORS. IEEE, 2017. http://dx.doi.org/10.1109/icsens.2017.8234359.

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Missinne, Jeroen, Erwin Bosman, Bram Van Hoe, Geert Van Steenberge, Peter Van Daele, and Jan Vanfleteren. "Embedded flexible optical shear sensor." In 2010 Ninth IEEE Sensors Conference (SENSORS 2010). IEEE, 2010. http://dx.doi.org/10.1109/icsens.2010.5690919.

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Abshirini, Mohammad, Mohammad Charara, Mrinal C. Saha, M. Cengiz Altan, and Yingtao Liu. "Optimization of 3D Printed Elastomeric Nanocomposites for Flexible Strain Sensing Applications." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11467.

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Abstract Flexible and sensitive strain sensors can be utilized as wearable sensors and electronic devices in a wide range of applications, such as personal health monitoring, sports performance, and electronic skin. This paper presents the fabrication of a highly flexible and sensitive strain sensor by 3D printing an electrically conductive polydimethylsiloxane (PDMS)/multi-wall carbon nanotube (MWNT) nanocomposite on a PDMS substrate. To maximize the sensor’s gauge factor, the effects of MWNT concentration on the strain sensing function in nanocomposites are evaluated. Critical 3D printing and curing parameters, such as 3D printing nozzle diameter and nanocomposites curing temperature, are explored to achieve the highest piezoresistive response, showing that utilizing a smaller deposition nozzle size and higher curing temperature can result in a higher gauge factor. The optimized 3D printed nanocomposite sensor’s sensitivity is characterized under cyclic tensile loads at different maximum strains and loading rates. A linear piezoresistive response is observed up to 70% strain with an average gauge factor of 12, pointing to the sensor’s potential as a flexible strain sensor. In addition, the sensing function is almost independent of the applied load rate. The fabricated sensors are attached to a glove and used as a wearable sensor by detecting human finger and wrist motion. The results indicate that this 3D printed functional nanocomposite shows promise in a broad range of applications, including wearable and skin mounted sensors.
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Lee, Je Kyun, Steven Green, Sangyup Song, Paul Phamduy, and Byungki Kim. "Flexible Graphene Sensors for Explosive Trace Detection." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64135.

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This paper presents an explosives sensor. The sensor consists of graphene spray coated onto a substrate with electrodes patterned on the surface. The substrates included glass and flexible polyethylene terephthalate (PET), and the leads were gold and silver respectively. Testing utilizing dinitrotoulene 2,4 (DNT) in a closed container showed the validity of using glass/gold based substrate with a graphene oxide coating as explosive sensors.
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Xu, Fei. "Flexible Fiber Sensors for Health-Monitoring." In Optical Sensors. Washington, D.C.: OSA, 2019. http://dx.doi.org/10.1364/sensors.2019.sth1c.2.

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Yang, Fan, Kuang-Ching Wang, and Yong Huang. "Experimental Study of Data Transmission Performance for Rotating Wireless Sensors Using Automatic Repeat Request." In ASME/ISCIE 2012 International Symposium on Flexible Automation. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/isfa2012-7252.

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IEEE 802.15.4 wireless sensor radios have limited resources, resulting in a higher probability of transmission errors in monitoring fast rotating structures such as the machinery spindle. To achieve reliable data transmission with wireless sensors, one feasible approach is to use automatic repeat request (ARQ) where packets that are not acknowledged are retransmitted immediately after timeout. The objective of this paper is to experimentally study the ARQ-based data transmission performance of IEEE 802.15.4 wireless sensor radios on a mechanical rotation apparatus. Using a specially designed rotation apparatus, the ARQ-based data transmission performance has been studied in terms of the data throughput and packet error rate (PER). It is found that ARQ is able to improve the data throughput performance and decrease the cycle PER at the cost of degrading the transmission energy efficiency. A throughput model is further proposed and validated for rotating wireless sensors when ARQ is implemented.
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Zou, Xiaotian, Weilong Cong, Nan Wu, Z. J. Pei, and Xingwei Wang. "Novel Fiber Optic Sensors and Their Application on Cutting Temperature Measurement in Rotary Ultrasonic Machining of Titanium." In ASME/ISCIE 2012 International Symposium on Flexible Automation. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/isfa2012-7142.

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Fiber optic temperature sensors offer unique advantages when used to measure cutting temperature in machining processes. This paper presents novel miniature fiber optic temperature sensors and their application in cutting temperature measurement in Rotary Ultrasonic Machining (RUM) of titanium. The sensors were based on a Fabry-Pérot (FP) interferometeric principle. The endface of the fiber was wet etched. A piece of borosilicate glass was thermally deposited into the cavity on the etched endface to form an FP cavity. Temperature calibration experiments were performed. During RUM, the sensor was embedded in the titanium workpiece to monitor the temperature change using different ultrasonic power. The results demonstrate the advantages of fiber optic sensors including high accuracy and resolution, superior stability and repeatability, and good durability against harsh environment.
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Zhang, Min, Zhihai Liu, Yu Zhang, Yaxun Zhang, Xinghua Yang, Jianzhong Zhang, Jun Yang, and Libo Yuan. "Spider Dragline Silk-Based Flexible Temperature Sensor." In Optical Sensors. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/sensors.2022.sm3e.5.

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We fabricate a spider silk-based multimode interferometer through evanescent coupling method. The silk is used to achieve light guiding and temperature sensing simultaneously. The sensing structure is encapsulated in PDMS, and made into a flexible and wearable sensor which can be used for real-time monitoring of human body temperature.
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Reddy, A. S. G., Binu B. Narakathu, M. Z. Atashbar, M. Rebros, E. Hrehorova, and M. Joyce. "Printed electrochemical based biosensors on flexible substrates." In 2010 Ninth IEEE Sensors Conference (SENSORS 2010). IEEE, 2010. http://dx.doi.org/10.1109/icsens.2010.5690281.

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Reports on the topic "Flexible Sensors"

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Tsukruk, Vladimir V. Microscopic Sensors Bases on Flexible Hybrid Nanomembranes. Fort Belvoir, VA: Defense Technical Information Center, August 2009. http://dx.doi.org/10.21236/ada567157.

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Koo, Helen, Hyejin Park, Dong-Joo Kim, and Hosang Ahn. Nanostructured Flexible Gas Sensors for Breath Monitoring System. Ames: Iowa State University, Digital Repository, 2013. http://dx.doi.org/10.31274/itaa_proceedings-180814-888.

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Butler, Donald P., and Zeynep Celik-Butler. Short Term Innovative Research on Sensors on Flexible Substrates. Fort Belvoir, VA: Defense Technical Information Center, July 2001. http://dx.doi.org/10.21236/ada395360.

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Schwartz, David Eric. Passively-Powered Adaptively-Located Flexible Hybrid Sensors Final Report. Office of Scientific and Technical Information (OSTI), January 2019. http://dx.doi.org/10.2172/1492725.

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Claus, Ana, Borzooye Jafarizadeh, Azmal Huda Chowdhury, Neziah Pala, and Chunlei Wang. Testbed for Pressure Sensors. Florida International University, October 2021. http://dx.doi.org/10.25148/mmeurs.009771.

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Currently, several studies and experiments are being done to create a new generation of ultra-low-power wearable sensors. For instance, our group is currently working towards the development of a high-performance flexible pressure sensor. However, with the creation of new sensors, a need for a standard test method is necessary. Therefore, we opted to create a standardized testbed to evaluate the pressure applied to sensors. A pulse wave is generated when the heart pumps blood causing a change in the volume of the blood vessel. In order to eliminate the need of human subjects when testing pressure sensors, we utilized polymeric material, which mimics human flesh. The goal is to simulate human pulse by pumping air into a polymeric pocket which s deformed. The project is realized by stepper motor and controlled with an Arduino board. Furthermore, this device has the ability to simulate pulse wave form with different frequencies. This in turn allows us to simulate conditions such as bradycardia, tachycardia, systolic pressure, and diastolic pressure.
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Ladner, I. Commerical off-the-shelf flexible contact stress sensor system. Office of Scientific and Technical Information (OSTI), October 2020. http://dx.doi.org/10.2172/2331525.

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Stoleru, Radu, Pascal Vicaire, Tian He, and John A. Stankovic. StarDust: A Flexible Architecture for Passive Localization in Wireless Sensor Networks. Fort Belvoir, VA: Defense Technical Information Center, January 2006. http://dx.doi.org/10.21236/ada465193.

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Andersen, Michael, David Culler, Hyung-Sin Kim, Raluca Popa, Gabe Fierro, Sam Kumar, Moustafa AbdelBaky, et al. Hamilton: Flexible, Open Source $10 Wireless Sensor System for Energy Efficient Building Operation. Office of Scientific and Technical Information (OSTI), June 2021. http://dx.doi.org/10.2172/1798959.

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Vann, C. S. ,. LLNL. New six degree of freedom position sensor greatly improves flexible manufacturing -- but will manufacturers adapt? Office of Scientific and Technical Information (OSTI), March 1998. http://dx.doi.org/10.2172/672336.

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Murton, Mark, Francis A. Bouchier, Dale T. vanDongen, Thomas Kimball Mack, Robert P. Cutler, and Michael P. Ross. Analysis to determine the maximum dimensions of flexible apertures in sensored security netting products. Office of Scientific and Technical Information (OSTI), August 2013. http://dx.doi.org/10.2172/1096513.

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