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Relevant bibliographies by topics / Polymer sensor

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Academic literature on the topic 'Polymer sensor'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 June 2025

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Journal articles on the topic "Polymer sensor"

1

Min, Yuru, Chenyao Yuan, Donglei Fu, and Jingquan Liu. "Formaldehyde Gas Sensors Fabricated with Polymer-Based Materials: A Review." Chemosensors 11, no. 2 (2023): 134. http://dx.doi.org/10.3390/chemosensors11020134.

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Formaldehyde has been regarded as a common indoor pollutant and does great harm to human health, which has caused the relevant departments to pay attention to its accurate detection. At present, spectrophotometry, gas chromatography, liquid chromatography, and other methods have been proposed for formaldehyde detection. Among them, the gas sensor is especially suitable for common gaseous formaldehyde detection with the fastest response speed and the highest sensitivity. Compared with the formaldehyde sensors based on small molecules, the polymer-based sensor has higher selectivity but lower sensitivity because the polymer-based sensor can realize the specific detection of formaldehyde through a specific chemical reaction. Polymer-related formaldehyde sensors can be very versatile. They can be fabricated with a single polymer, molecularly imprinted polymers (MIP), polymer/metal-oxide composites, different polymers, polymer/biomass material composites, polymer/carbon material composites, and polymer composites with other materials. Almost all of these sensors can detect formaldehyde at ppb levels under laboratory conditions. Moreover, almost all polymer nanocomposite sensors have better sensitivity than single polymer sensors. However, the sensing performance of the sensor will be greatly reduced in a humid environment due to the sensitive coating on the gaseous formaldehyde sensor, which is mostly a hydrophilic polymer. At present, researchers are trying to improve the sensitive material or use humidity compensation methods to optimize the gaseous formaldehyde sensor. The improvement of the practical performance of formaldehyde sensors has great significance for improving indoor living environments.

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Nagar, Malhar A., and Davide Janner. "Polymer-Based Optical Guided-Wave Biomedical Sensing: From Principles to Applications." Photonics 11, no. 10 (2024): 972. http://dx.doi.org/10.3390/photonics11100972.

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Polymer-based optical sensors represent a transformative advancement in biomedical diagnostics and monitoring due to their unique properties of flexibility, biocompatibility, and selective responsiveness. This review provides a comprehensive overview of polymer-based optical sensors, covering the fundamental operational principles, key insights of various polymer-based optical sensors, and the considerable impact of polymer integration on their functional capabilities. Primary attention is given to all-polymer optical fibers and polymer-coated optical fibers, emphasizing their significant role in “enabling” biomedical sensing applications. Unlike existing reviews focused on specific polymer types and optical sensor methods for biomedical use, this review highlights the substantial impact of polymers as functional materials and transducers in enhancing the performance and applicability of various biomedical optical sensing technologies. Various sensor configurations based on waveguides, luminescence, surface plasmon resonance, and diverse types of polymer optical fibers have been discussed, along with pertinent examples, in biomedical applications. This review highlights the use of biocompatible, hydrophilic, stimuli-responsive polymers and other such functional polymers that impart selectivity, sensitivity, and stability, improving interactions with biological parameters. Various fabrication techniques for polymer coatings are also explored, highlighting their advantages and disadvantages. Special emphasis is given to polymer-coated optical fiber sensors for biomedical catheters and guidewires. By synthesizing the latest research, this review aims to provide insights into polymer-based optical sensors’ current capabilities and future potential in improving diagnostic and therapeutic outcomes in the biomedical field.

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Alberti, Giancarla, Camilla Zanoni, Vittorio Losi, Lisa Rita Magnaghi, and Raffaela Biesuz. "Current Trends in Polymer Based Sensors." Chemosensors 9, no. 5 (2021): 108. http://dx.doi.org/10.3390/chemosensors9050108.

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This review illustrates various types of polymer and nanocomposite polymeric based sensors used in a wide variety of devices. Moreover, it provides an overview of the trends and challenges in sensor research. As fundamental components of new devices, polymers play an important role in sensing applications. Indeed, polymers offer many advantages for sensor technologies: their manufacturing methods are pretty simple, they are relatively low-cost materials, and they can be functionalized and placed on different substrates. Polymers can participate in sensing mechanisms or act as supports for the sensing units. Another good quality of polymer-based materials is that their chemical structure can be modified to enhance their reactivity, biocompatibility, resistance to degradation, and flexibility.

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Salunkhe, Tejaswi Tanaji, and Il Tae Kim. "Sequential Dual Coating with Thermosensitive Polymers for Advanced Fiber Optic Temperature Sensors." Sensors 23, no. 6 (2023): 2898. http://dx.doi.org/10.3390/s23062898.

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We systematically designed dual polymer Fabry–Perrot interferometer (DPFPI) sensors, which were used to achieve highly sensitive temperature sensors. The designed and fabricated DPFPI has a dual polymer coating layer consisting of thermosensitive poly (methyl methacrylate) (PMMA) and polycarbonate (PC) polymers. Four different DPFPI sensors were developed, in which different coating optical path lengths and the resultant optical properties were generated by the Vernier effect, changing the sequence of the applied polymers and varying the concentration of the coating solutions. The experimental results confirmed that the PC_PMMA_S1 DPFPI sensor delivered a temperature sensitivity of 1238.7 pm °C−1, which was approximately 4.4- and 1.4-fold higher than that of the PMMA and PMMA_PC_S1-coated sensor, respectively. Thus, the results reveal that the coating sequence, the compact thickness of the dual polymer layers, and the resultant optical parameters are accountable for achieving sensors with high sensitivity. In the PC_ PMMA-coated sensor, the PMMA outer layer has comparatively better optical properties than the PC, which might produce synergistic effects that create a large wavelength shift with small temperature deviations. Therefore, it is considered that the extensive results with the PC_PMMA_S1 DPFPI sensor validate the efficacy, repeatability, reliability, quick reaction, feasibility, and precision of the temperature readings.

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Khayal, Areeba. "A NOVEL ROUTE FOR THE FORMATION OF GAS SENSORS." International journal of multidisciplinary advanced scientific research and innovation 1, no. 6 (2021): 96–108. http://dx.doi.org/10.53633/ijmasri.2021.1.6.04.

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The rapid development of conductive polymers shows great potential in temperature chemical gas detection as their electrical conductivity is often changed upon spotlight to oxidative or reductive gas molecules at room temperature. However, the relatively low conductivity and high affinity toward volatile organic compounds and water molecules always exhibit low sensitivity, poor stability and gas selectivity, which hinder their practical gas sensor applications. In addition, inorganic sensitive materials show totally different advantages in gas sensors like high sensitivity, fast response to low concentration analytes, high area and versatile surface chemistry, which could harmonize the conducting polymers in terms of the sensing individuality. It seems to be a good option to combine inorganic sensitive materials with polymers for gas detection for the synergistic effects which has attracted extensive interests in gas sensing applications. In this appraisal the recapitulation of recent development in polymer inorganic nanocomposites-based gas sensors. The roles of inorganic nanomaterials in improving the gas sensing performances of conducting polymers are introduced and therefore the progress of conducting polymer inorganic nanocomposites including metal oxides, metal, carbon (carbon nanotube, graphene) and ternary composites are obtainable. Finally, conclusion and perspective within the field of gas sensors incorporating conducting polymer inorganic nanocomposites are summarized. Keywords: Gas sensor, conducting polymer, polymer-inorganic nanocomposites; conducting organic polymers nanostructure, synergistic effect, polypyrrole (PPY), polyaniline (PANI).

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Carvalho, Mauro dos Santos de, Michael Rapp, Achim Voigt, and Marian Dirschka. "The Use of Polyurethane Composites with Sensing Polymers as New Coating Materials for Surface Acoustic Wave-Based Chemical Sensors—Part II: Polyurethane Composites with Polylaurylmetacrylate, Polyisobutene, and Poly(chlorotrifluoroethylene-co-vinylidene Fluoride): Coating Results, Relative Sensor Responses and Adhesion Analysis." Coatings 14, no. 7 (2024): 778. http://dx.doi.org/10.3390/coatings14070778.

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This work presents the application of the methodology for the sensitization of surface acoustic wave-based sensors (SAW), developed in the first part of this work. The strategy of the method is the obtention of sensing layers with tailored chemical environments by taking advantage of the wide variety of chemical composition of the organic polymers, which have been used as sensing polymers, and combining them with polyurethane (PU) to form polymeric composites that show enhanced properties as sensing materials for the SAW sensor technology. In the first part of this work, the ultrasonic and adhesion characterization was correlated to the sensor responses of PU-polybutylmethacrylate (PBMA) composites of different relative concentrations of the sensing polymer (PBMA) and PU. The resulting coating layers obtained with the PU polymer composites improved the chemical and mechanical properties of the sensing layer without interfering with the quality of their sensor responses in comparison to those with the pristine polymer as the sensing material. In this second part of this work, three new polyurethane polymeric composites were analyzed. The new sensing materials were produced using polylaurylmetacrylate (PLMA), polyisobutene (PIB), and poly(chlorotrifluoroethylene-co-vinylidene fluoride) (PCTFE) as the sensing polymers combined with PU. The results of the new PU polymer composites showed consequently different properties depending on the type of sensing polymer used, reproducing, however, the previous features achieved with PU and polybutylmetacrylate (PBMA) composites, like the improvements in the adhesion and the resistance against an organic solvent and preserving, in each case, the sensor response characteristic of each sensing polymer used, as was also observed for the PU-PBMA polymeric composites. The results obtained with the new sensing materials validated the strategy and confirmed its generalization as a very suitable methodology for the sensitization of SAW sensors, strongly indicating the applicability and reliability of the method, which makes possible the choice of virtually any chemical environments for the sensitization of SAW sensor systems.

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Chen, Weifeng, Shaona Chen, Weimin Hu, Dejiang Li, and Zhongxu Dai. "The Preparation Approaches of Polymer/graphene Nanocomposites and their Appilcation Research Progress as Electrochemical Sensors." Journal of New Materials for Electrochemical Systems 20, no. 4 (2017): 205–21. http://dx.doi.org/10.14447/jnmes.v20i4.356.

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Graphene, a two-dimensional sheet of sp2-hybridized carbon atoms packed into a honeycomb lattice, can be combined with various polymers through different methods and techniques. Polymer/graphene nanocomposites are expected to not only preserve the fa-vorable properties of graphene and polymers, but also greatly enhance the intrinsic properties due to the synergetic effect between them. In this review, the preparation approaches of graphene/polymer nanocomposites, including melt blending, solution blending, in-situ polymeri-zation and in-situ synthesis, were presented comprehensively in order to study the relationship between these approaches and the final characteristics and performances. Each approach had different influences on the final properties of the nanocomposites. The advantages and disadvantages of the preparation methods were discussed respectively. Additionally, the application researches of the polymer/graphene nanocomposites as electrochemical sensors, were introduced in detail. With regard to some important or novel sensors, the mechanisms were proposed for reference. Finally, conclusions were given and the issues waiting to be settled for further development were pointed out. The current review demonstrates that polymer/graphene nanocomposites exhibit superior electrochemical performances and will be applied practically in the field of sensor devices.

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Latif, Usman, Adnan Mujahid, Muhammad Zahid, Ghulam Mustafa, and Akhtar Hayat. "Nanostructured Molecularly Imprinted Photonic Polymers for Sensing Applications." Current Nanoscience 16, no. 4 (2020): 495–503. http://dx.doi.org/10.2174/1573413715666190206144415.

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This review article focused on fabrication of sensors by using a combination of highly ordered photonic crystals and molecular imprinted polymers as artificial recognition materials. In this article, we have discussed fundamental principle of photonic crystals, various synthetic approaches and their use in sensing applications. Moreover, nanostructuring of recognition materials, by using photonic crystals, for sensor fabrication and sensing mechanism has also been discussed. Molecular imprinted photonic polymer layers have been applied for developing sensor devices for diverse analytes such as environmental toxins, nerve gas agents, explosives, drug molecules and others. A comprehensive comparison of molecular imprinted photonic polymers based sensor systems has also been summarized in the table which contains all the related information about colloidal structure, polymer system including monomer, cross-linker and initiator as well as target analytes. Finally, emerging strategies and current challenges involved in the design of more efficient molecular imprinted photonic sensors and their possible solutions are also briefly discussed.

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Constantinoiu, Izabela, and Cristian Viespe. "Hydrogen Detection with SAW Polymer/Quantum Dots Sensitive Films." Sensors 19, no. 20 (2019): 4481. http://dx.doi.org/10.3390/s19204481.

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Regarding the use of hydrogen as a fuel, it is necessary to measure its concentration in air at room temperature. In this paper, sensitive composite films have been developed for surface acoustic wave (SAW) sensors, using quantum dots (QDs) and polymers. Si/SiO2 QDs were used due to having a high specific surface area, which considerably improves the sensitivity of the sensors compared to those that only have a polymer. Si/SiO2 QDs were obtained by laser ablation and analyzed by X-ray diffraction and transmission electron microscopy (TEM). Two types of polymers were used: polydimethylsiloxane (PDMS) and polymethylmethacrylate (PMMA). Polymer and polymer with QDs compositions were deposited on the sensor substrate by drop casting. A heat treatment was performed on the films at 80 °C with a thermal dwell of two hours. The sensors obtained were tested at different hydrogen concentrations at room temperature. A limit of detection (LOD) of 452 ppm was obtained by the sensor with PDMS and Si/SiO2 QDs, which was heat treated. The results demonstrated the potential of using QDs to improve the sensitivity of the SAW sensors and to achieve a heat treatment that increases its adsorption capacity of the gas molecules.

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Muangrat, Worawut, Rungroj Maolanon, Sirapat Pratontep, Supanit Porntheeraphat, and Winadda Wongwiriyapan. "Polymer-Coated Single-Walled Carbon Nanotubes for Ethanol and Dichloromethane Discrimination." Advanced Materials Research 802 (September 2013): 267–72. http://dx.doi.org/10.4028/www.scientific.net/amr.802.267.

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Sensor response and pattern recognition of polymer-coated single-walled carbon nanotubes (SWNTs) were investigated. Printed circuit board (PCB) with Cu/Au interdigitated electrode was used as sensor platform. SWNTs network was firstly formed on PCB by drop-casting. For polymer-coated SWNTs preparation, poly(methyl methacrylate) (PMMA) and thiophene were employed as polymers to coat on SWNTs by spin coating; PMMA/SWNTs and thiophene/SWNTs. Raman spectra showed no obvious structure changes of SWNTs after polymer coating. Next, gas sensing test was conducted. Pristine SWNTs, PMMA/SWNTs and thiophene/SWNTs were exposed to vapors of ethanol and dichloromethane at room temperature. From normalized sensor response results, it was found that pristine SWNTs and PMMA/SWNTs showed the highest response to ethanol and dichloromethane vapors, respectively. In order to discriminate vapors between ethanol and dichloromethane, pattern recognition technique was utilized. Principal component analysis (PCA) results showed that pattern recognition of ethanol and dichloromethane vapors can be discriminated by using pristine SWNTs and polymer-coated SWNTs sensors.

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Dissertations / Theses on the topic "Polymer sensor"

1

Nelson, Burke I. "An improved in-line process rheometer for use as a process control sensor /." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=64059.

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Cao, Jinwei. "BIOELECTRICITY INSPIRED POLYMER ELECTROLYTE MEMBRANES FOR SENSING AND ENGERGY HARVESTING APPLICATIONS." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1541721597835991.

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Lin, Yen-Hsi. "Design of nanoscale responsive polymer film for sensor application." [Ames, Iowa : Iowa State University], 2007.

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McAfee, Marion Bridget. "A soft sensor for viscosity control of polymer extrusion." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426702.

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Bailey, Arthur Lionel Paul stuart. "Development of conducting polymer sensor arrays for wound monitoring." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/development-of-conducting-polymer-sensor-arrays-for-wound-monitoring(a4a40b8d-9a05-46a0-8437-d81944471194).html.

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The aim of this research was to develop an array of conducting polymer gas sensors as part of an electronic nose designed for monitoring the metabolites produced from the bacteria present in wounds. The device was designed to be a portable system that could discriminate between relevant bacteria non-invasively using solid phase microextraction and an array of conducting polymers and metal oxide sensors in conjunction with pattern-recognition software. In order to develop the sensors, GC/MS headspace analysis of a selection of bacterial species that are most commonly found to be present in wounds was first undertaken in order to determine the volatile key markers. The chosen key markers were then used as calibration gases in order to test and develop the sensors. Electrochemical techniques were used to polymerise and study a variety of conducting polymers, focusing on polypyrrole based sensors with differing functionality. The use of different dopant ions was also studied in an effort to optimise the sensitivities of the polymer sensors. The results of electrochemical development and gas testing were used to elucidate the optimal sensor array in relation to the calibration gases used, which was subsequently used in the hybrid device prototype. the conducting polymer sensors did not perform well using solid phase microextraction sampling methods, results using a direct injection method of the headspace showed that the device could discriminate between Pseudomonas aeruginosa and Staphyloccocus aureus.

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Ren, Yitao. "Waveguide properties of thin polymer films." Thesis, Durham University, 1999. http://etheses.dur.ac.uk/4563/.

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Some basic concepts and principles of optical dielectric slab waveguiding and experimental methodology involving characterisation of waveguide films are introduced, Results from the characterisation of thin polymeric waveguide films and measurements of refractive indices of the films are presented. The birefringence of some polymer films is analysed and discussed. The photostabilities of several dopants (DEMI, Ultra-DEMI, Dicyclohexyl-DEMI, Mor2, Morpip and DCM) are investigated in a polymer matrix (PMMA), and their measured photostabilities are presented. These organic chromophores change their properties in the course of photodegradation. Degradation experiments are carried out by exposing the doped waveguide films to light in air, vacuum and nitrogen environments. The degradation mechanisms of these chromophores are discussed. It is found that the degradation of the DEMI, Ultra-DEMI, Dicyclohexyl-DEMI and DCM are due to photooxidation, their photostabilities are much higher in vacuum than in air. The Mor2 and Morpip degrade by direct photodecomposition, their photostabilities are in the same order when exposed to light in their main absorption bands. The oxygen free environment (e.g. vacuum) is essential to increase their photostabilities. A beam branching effect in DCM doped waveguide film is observed. Stacked multi-layer waveguides are investigated as possible humidity sensors. Symmetric structure (PMMA/P-4VP/PMMA/P-4VP/PMMA) (P4VP-I) and unsymmetric structure (Si02/P-4VP/Zeonex/P-4VP/Air) (P4VP-II) are studied. Special procedures and process have been developed to fabricate multi-layer waveguide structures in experiments. It is found that both structures have good reversibilities and show reasonable stabilities. 30 ppm concentrations of water vapour can be detected by the P4VP-II structure. The experimental results show that the overall response of P4VP-II structure exhibits good linearity with increase of the concentration of water vapour. The structures can not only measure the phase shift of interference, but also can measure the direction of fringe movement. The sensitivity of the structure can be further improved by using different combinations of polymers in the structure.

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Lei, Hua. "Modeling and Data Analysis of Conductive Polymer Composite Sensors." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1577.pdf.

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Crenshaw, Brent R. "PHOTOLUMINESCENT POLYMER MATERIALS WITH BUILT-IN DEFORMATION AND TEMPERATURE SENSORS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=case1169825895.

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Neustein, Michelle Elizabeth Schauer Caroline L. Wheatley Margaret A. "Polymer thin film colorimetric gas sensor for lung cancer analytes /." Philadelphia, Pa. : Drexel University, 2005. http://dspace.library.drexel.edu/handle/1860/488.

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Inal, Sahika. "Responsive polymers for optical sensing applications." Phd thesis, Universität Potsdam, 2013. http://opus.kobv.de/ubp/volltexte/2014/7080/.

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LCST-type synthetic thermoresponsive polymers can reversibly respond to certain stimuli in aqueous media with a massive change of their physical state. When fluorophores, that are sensitive to such changes, are incorporated into the polymeric structure, the response can be translated into a fluorescence signal. Based on this idea, this thesis presents sensing schemes which transduce the stimuli-induced variations in the solubility of polymer chains with covalently-bound fluorophores into a well-detectable fluorescence output. Benefiting from the principles of different photophysical phenomena, i.e. of fluorescence resonance energy transfer and solvatochromism, such fluorescent copolymers enabled monitoring of stimuli such as the solution temperature and ionic strength, but also of association/disassociation mechanisms with other macromolecules or of biochemical binding events through remarkable changes in their fluorescence properties. For instance, an aqueous ratiometric dual sensor for temperature and salts was developed, relying on the delicate supramolecular assembly of a thermoresponsive copolymer with a thiophene-based conjugated polyelectrolyte. Alternatively, by taking advantage of the sensitivity of solvatochromic fluorophores, an increase in solution temperature or the presence of analytes was signaled as an enhancement of the fluorescence intensity. A simultaneous use of the sensitivity of chains towards the temperature and a specific antibody allowed monitoring of more complex phenomena such as competitive binding of analytes. The use of different thermoresponsive polymers, namely poly(N-isopropylacrylamide) and poly(meth)acrylates bearing oligo(ethylene glycol) side chains, revealed that the responsive polymers differed widely in their ability to perform a particular sensing function. In order to address questions regarding the impact of the chemical structure of the host polymer on the sensing performance, the macromolecular assembly behavior below and above the phase transition temperature was evaluated by a combination of fluorescence and light scattering methods. It was found that although the temperature-triggered changes in the macroscopic absorption characteristics were similar for these polymers, properties such as the degree of hydration or the extent of interchain aggregations differed substantially. Therefore, in addition to the demonstration of strategies for fluorescence-based sensing with thermoresponsive polymers, this work highlights the role of the chemical structure of the two popular thermoresponsive polymers on the fluorescence response. The results are fundamentally important for the rational choice of polymeric materials for a specific sensing strategy.<br>Als Reaktion auf bestimmte äußere Stimuli ändern bestimmte wasserlösliche Polymere reversibel ihren physikalischen Zustand. Dieser Vorgang kann mithilfe von Fluorophoren, die in die Polymerstrukturen eingebaut werden und deren Fluoreszenzeigenschaften vom Polymer¬zustand abhängen, detektiert werden. Diese Idee ist der Ausgangspunkt der vorliegenden Arbeit, die sich damit beschäftigt, wie äußerlich induzierte Änderungen der Löslichkeit solcher Polymere mit kovalent gebundenen Fluorophoren in Wasser in ein deutlich messbares Fluoreszenzsignal übersetzt werden können. Dazu werden photophysikalische Phänomene wie Fluoreszenz-Resonanz¬energie¬transfer und Solvatochromie ausgenutzt. In Kombination mit einem responsiven Polymergerüst wird es möglich, verschiedene Stimuli wie Lösungs¬temperatur oder Ionenstärke, oder auch Assoziation-Dissoziation Reaktionen mit anderen Makromolekülen oder biochemische Bindungs¬reaktionen über die Änderung von Fluorezenz¬farbe bzw. –Intensität autonom mit bloßem Auge zu detektieren. Unter anderem wurde ein wässriger ratiometrischer Temperatur- und Salzsensor entwickelt, der auf der komplexen supramolekularen Struktur eines thermoresponsiven Copolymers und eines thiophenbasierten konjugierten Polyelektrolyts beruht. Die Anbindung solvato¬chromer Fluorophore erlaubte den empfindlichen Nachweis einer Temperatur¬änderung oder des Vorhandenseins von Analyten. Komplexere Phänomene wie das kompetitive Anbinden von Analyten ließen sich hochempfindlich steuern und auslesen, indem gleichzeitig die Sensitivität dieser Polymeren gegenüber der Temperatur und spezifischen Antikörpern ausgenutzt wurde. Überraschenderweise wiesen die hier untersuchten thermoresponsiven Polymere wie poly-N-isopropylacrylamid (pNIPAm) oder poly-Oligoethylenglykolmethacrylate (pOEGMA) große Unterschiede bzgl. ihrer responsiven optischen Eigenschaften auf. Dies erforderte eine ausführliche Charakterisierung des Fluoreszenz- und Aggregationsverhaltens, unter- und oberhalb des Phasenübergangs, im Bezug auf die chemische Struktur. Ein Ergebnis war, dass alle drei Polymertypen sehr ähnliche temperaturabhängige makroskopische Absorptionseigenschaften aufweisen, während sich die Eigenschaften auf molekularer Ebene, wie der Hydratisierungsgrad oder die intermolekulare Polymerkettenaggregation, bei diesen Polymeren sehr unterschiedlich. Diese Arbeit zeigt damit anhand zweier sehr etablierter thermoresponsiver Polymere, nämlich pNIPAm und pOEGMA, das die chemische Struktur entscheidend für den Einsatz dieser Polymere in fluoreszenzbasierten Sensoren ist. Diese Ergebnisse haben große Bedeutung für die gezielte Entwicklung von Polymermaterialien für fluoreszenzbasierte Assays.

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Books on the topic "Polymer sensor"

1

Stone, Richard. Apparatus for the characterisation of conducting polymer gas sensor arrays. UMIST, 1995.

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A, Bernards D., Owens R. M, and Malliaras George G, eds. Organic semiconductors in sensor applications. Springer, 2008.

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Bernards, Daniel A., George G. Malliaras, and Róisín M. Owens. Organic Semiconductors in Sensor Applications. Springer-Verlag Berlin Heidelberg, 2008.

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Li, Linda. A fibre optic sensor for monitoring atomic oxygen erosion of polymer matrix composites. National Library of Canada, 1995.

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Rogers, John A. A new optical `electronic nose' sensor using an array of polymer films and the resonant mirror. UMIST, 1997.

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Osada, Yoshihito. Polymer Sensors and Actuators. Springer Berlin Heidelberg, 2000.

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Osada, Yoshihito, and Danilo E. De Rossi, eds. Polymer Sensors and Actuators. Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-662-04068-3.

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Yoshihito, Osada, and De Rossi Danilo E, eds. Polymer sensors and actuators. Springer, 2000.

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Akmal, Naim, and Arthur M. Usmani, eds. Polymers in Sensors. American Chemical Society, 1998. http://dx.doi.org/10.1021/bk-1998-0690.

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Hahn, P. H. On the performance of multielement conducting polymer sensors. UMIST, 1993.

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Book chapters on the topic "Polymer sensor"

1

Császár, Csaba. "Polymer Thick-Film Pressure Sensor." In Multichip Modules with Integrated Sensors. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0323-4_33.

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Wei, Yen, Meixiang Wan, Ten-Chin Wen, et al. "Nanostructured Conducting Polymers for Sensor Development." In Semiconducting Polymer Composites. Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527648689.ch17.

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Li, Ping, William J. Richardson, Di Song, and Ken D. Shimizu. "CHAPTER 14. Molecularly Imprinted Polymer Sensor Arrays." In Polymer Chemistry Series. Royal Society of Chemistry, 2018. http://dx.doi.org/10.1039/9781788010474-00447.

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Bhandari, Subhendu. "Polymer/Carbon Composites for Sensor Application." In Springer Series on Polymer and Composite Materials. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2688-2_14.

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Kimura, Mutsumi. "Conductive Polymer Fibers for Sensor Devices." In Handbook of Smart Textiles. Springer Singapore, 2015. http://dx.doi.org/10.1007/978-981-4451-45-1_9.

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Kimura, Mutsumi. "Conductive Polymer Fibers for Sensor Devices." In Handbook of Smart Textiles. Springer Singapore, 2014. http://dx.doi.org/10.1007/978-981-4451-68-0_9-1.

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Kondawar, Subhash B., and Pallavi T. Patil. "Conducting Polymer Nanocomposites for Sensor Applications." In Springer Series on Polymer and Composite Materials. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-46458-9_8.

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Srivastava, Ankit Kumar, Swasti Saxena, and Surendra K. Yadav. "Energy and Sensor Applications of Polymer Nanocomposites." In Nanomaterials for Energy and Sensor Applications. CRC Press, 2023. http://dx.doi.org/10.1201/9781003350965-2.

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Pandey, Annu, and Rajeev Jain. "Polymer-Based Biomaterials: An Emerging Electrochemical Sensor." In Handbook of Polymer and Ceramic Nanotechnology. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-10614-0_60-1.

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Grozdanov, A., A. Tomova, and A. Dimitrov. "Polymer Nanocomposite Films as a Potential Sensor." In NATO Science for Peace and Security Series B: Physics and Biophysics. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-7003-4_12.

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Conference papers on the topic "Polymer sensor"

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Milgrave, Lase, Janis Alnis, and Arturs Bundulis. "Integrated polymer ring resonator sensor for environmental monitoring." In Optical Sensors 2025, edited by Robert A. Lieberman, Francesco Baldini, and Jiri Homola. SPIE, 2025. https://doi.org/10.1117/12.3056628.

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Mallick, Shoaib, Zubair Ahmad, and Farid Touati. "Polymer Nanocomposite-based Moisture Sensors for Monitoring of the Water Contents in the Natural Gas Pipelines." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0073.

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In this study, the polymer-based humidity sensors were investigated for humidity sensing applications. The key advantages of polymers that have garnered this attraction are their lightweight, easy preparation, and low cost of both materials and fabrication process. Different techniques are used to enhance the surface morphology and sensitivity of polymeric films, which include synthesis of nanocomposites, copolymerization techniques, and blending of polymers. The incorporation of nanoparticles to the polymer matrix improves the electrical and mechanical properties of the polymeric film. We have investigated different polymer nanocomposites based humidity sensors on enhancing the sensitivity of the sensor, on achieving faster response and recovery time and lower hysteresis loss as compared to the polymeric humidity sensors. In the first phase, we investigated the PLA-TiO2 nanocomposite for humidity sensing applications. We have optimized the concentration of TiO2 in the PLA-TiO2 nanocomposite and apply acetone for the surface treatment of the sensing film. In the second phase, we studied the PVDF-TiO2 nanocomposite-based humidity sensor, achieved a linear response of the sensor, and optimized the concentration of PVDF. In the third phase, we incorporated the BaTiO3 nanoparticles within optimized PVDF and studied the dielectric property of the nanocomposite film. PVDF-BaTiO3 sensors show a smaller hysteresis response. In the 4th phase, we blend the PVDF with SPEEK polymer; the optimized concentration of SPEEK improves the sensitivity of the humidity sensors at a lower humidity level.

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Paster, Eli, Bryan P. Ruddy, Priam V. Pillai, and Ian W. Hunter. "Conducting Polymer-Based Multifunctional Materials." In ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2010. http://dx.doi.org/10.1115/smasis2010-3761.

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Conducting polymers are employable as low-voltage actuators, sensors, energy storage and delivery components, structural elements, computational circuitry, memory, and electronic components, making them a versatile choice for creating integrated, multifunctional materials and devices. Here we show one such conducting polymer-based, multifunctional system, derived from the versatility of the conducting polymer polypyrrole. Three functions of polypyrrole (actuation, length sensation, and energy storage) have been individually evaluated and cooperatively combined in the synthesis of a multifunctional, polymeric system that actuates, senses strain deformation, and stores energy. The system operates whereby the strain of a polypyrrole actuator is measured by a polypyrrole length sensor, whilst being powered by an array of polypyrrole supercapacitors. Independently, polypyrrole actuators were evaluated at 250 discrete frequencies ranging from 0.01 to 10 Hz using fixed, ±1 V sinusoidal excitation. Polypyrrole length sensors were evaluated using a thin-film dynamic mechanical analyzer for the same range of frequencies with a 2% sinusoidal input strain. Polypyrrole supercapacitors were evaluated using cyclic voltammetry (−1.0 V to +1.0 V; 12.5 to 100 mV/sec) and galvanostatic charge-discharge cycling (0.5 to 2 mA/mg). As an actuator, polypyrrole samples showed measureable actuation strain between 0.001% and 1.6% for the frequency range tested, with amplitude versus frequency decay behavior similar to a first-order low-pass filter. As a length sensor, polypyrrole samples showed linearelastic behavior up to 3% strain and gauge factors near 4. As a symmetric supercapacitor, polypyrrole had capacitance values higher than 20 kF/kg, energy densities near 20 kJ/kg, and power densities near 2 kW/kg. The evaluation of each component, independently, justified creating a cooperative system composed of these three components operating simultaneously. Polypyrrole supercapacitors provided ample power to excite polypyrrole actuators. Polypyrrole length sensors attached in series to polypyrrole actuators were capable of measuring strain from coupled polypyrrole actuators. Performance metrics and future possibilities regarding conducting polymer-based multifunctional materials are discussed.

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Satyanarayana, Srinath, Daniel T. McCormick, and Arun Majumdar. "Nanomechanical Biosensor Using Polymer Membranes." In ASME 2004 3rd Integrated Nanosystems Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/nano2004-46033.

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In recent years several surface stress sensors based on microcantilevers have been developed for biosensing [1–4]. Since these sensors are made using standard microfabrication processes, they can be easily made in an array format, making them suitable for high-throughput multiplexed analysis. Specific reactions occurring on one surface (enabled by selective modification of the surface a priori) of the sensor element change the surface stress, which in turn causes the sensor to deflect. The magnitude and the rate of deflection are then used to study the reaction. The microcantilevers in these sensors are usually fabricated using material like silicon and its oxides or nitrides. The high elasticity modulus of these materials places limitations on the sensitivity and sensor geometry. Alternately polymers, which have a much lower elastic modulus when compared to silicon or its derivatives, offers greater design flexibility, i.e. allow the exploration of innovative sensor configurations that can have higher sensitivity and at the same time are suitable for integration with microfluidics and electrical detection systems.

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Anderson, Iain A., Yuting Zhu, and Samuel Rosset. "Multi-touch capacitive sensor with new sensor arrangement." In Electroactive Polymer Actuators and Devices (EAPAD) XX, edited by Yoseph Bar-Cohen. SPIE, 2018. http://dx.doi.org/10.1117/12.2296794.

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He, Yue, Shenglong Zhang, Ziqian Dong, and Fang Li. "Conductive Polymer-Based Sensor for Soil Nutrient Detection." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24217.

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Abstract To increase the production of crops, chemical fertilizers are used in crop fields. However, underuse or overuse cannot increase crop yields but even decrease them and cause severe environmental problems. Thus, the detection and monitoring of chemical concentration are increasingly important. To build up and monitor a data-based system for a large area, such a method is costly and time-consuming. In this research, we developed a conductive polymer-based sensor to detect nitrate concentrations in soil water. Conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) was used as our sensing material. To increase its conductivity, we used the vacuum phase polymerization method to achieve a high conductive and stable polymer film. The conductivity of the polymer film is 500 S/cm. Our results have demonstrated that the conductive polymer-based sensors have high sensitivity to nitrate solution. The response to 1000 ppm nitrate solution is 47.2% (Response = (Initrate - IDIwate) / IDIwater). The sensors can detect nitrate range from 1ppm to 1000 ppm. The response time is less than 1 minute. This impedance-based sensor will eventually be integrated with the surface acoustic wave sensors, combined with an antenna and a GPR unit for low maintenance, autonomous, and in-situ soil nutrient sensing.

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Kim, Jinseok, Sungwook Yang, Jeongeun Baek, et al. "Cardiomyocytes Self-Powered Polymer Microrobot." In TRANSDUCERS 2007 - 2007 International Solid-State Sensors, Actuators and Microsystems Conference. IEEE, 2007. http://dx.doi.org/10.1109/sensor.2007.4300406.

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Klejwa, N., R. Misra, J. Provine, et al. "Laser-printed magnetic-polymer microstructures." In TRANSDUCERS 2009 - 2009 International Solid-State Sensors, Actuators and Microsystems Conference. IEEE, 2009. http://dx.doi.org/10.1109/sensor.2009.5285826.

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Afromowitz, Martin A. "FIBER OPTIC POLYMER CURE SENSOR." In Optical Fiber Sensors. OSA, 1988. http://dx.doi.org/10.1364/ofs.1988.pd2.

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Kiesel, Sharon, Patrick Van Vickle, Kara Peters, Tasnim Hassan, and Mervyn Kowalsky. "Intrinsic Polymer Optical Fiber Sensors for High-Strain Applications." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81448.

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This article proposes intrinsic polymer fiber sensors for the performance-based assessment and health monitoring of civil infrastructure systems. Such sensors would allow the dynamic measurement of large strains as required for structures during earthquake loading. Furthermore, the interferometric nature of the sensor permits high accuracy for such measurements. However, the use of the polymer fiber sensors at large strain magnitudes is not without significant challenges as compared to conventional silica optical fiber sensors due to the finite deformation of the fiber and nonlinear photoelastic effects. This article analyzes the implications of the large deformations on the opto-mechanical response of the sensors, derives the sensor opto-mechanical properties to be obtained through sensor calibrations, and demonstrates the data acquisition method to be utilized for the new sensors.

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Reports on the topic "Polymer sensor"

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Fernandes, Jeremy. PR-396-163702-R03 Petroleum Pipeline Polymer Absorption Sensor (PAS) Leak Detection Cable. Pipeline Research Council International, Inc. (PRCI), 2023. http://dx.doi.org/10.55274/r0000048.

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This report presents the outcomes of the PRCI project PL-1H, which aimed to evaluate the effectiveness and limitations of a cable-deployed polymer absorption sensor (PAS) in rapidly detecting small pipeline hydrocarbon leaks. Current computational pipeline monitoring systems struggle to detect leaks below 1-2% of flow, making it crucial to explore alternative independent sensor technologies. The PAS cable represents a potential solution for detecting these leaks early in their development. The sensor can be installed during new pipeline installations or placed near existing pipelines, and it operates by detecting hydrocarbon vapors (C4+) that enter a PAS node and trigger the polymer sensor.

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Wei, Kung-Hwa. High-Sensitivity Conjugated Polymer/Nanoparticle Nanocomposites for Infrared Sensor Applications. Defense Technical Information Center, 2011. http://dx.doi.org/10.21236/ada538201.

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Caro Rodriguez, Guillermo, and María Dolores Fernández Ramos. Chemoresistive sensor based on a conductive polymer for gaseous acids and bases in the environment. Fundación Avanza, 2023. http://dx.doi.org/10.60096/fundacionavanza/1852022.

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A conducting polymer with good characteristics in terms of robustness, adherence, and physical properties was developed. Based on this conductor, a chemoresistive sensor was designed to determine gaseous acids and bases in the environment

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Giedd, Ryan, Kartik Ghosh, Matt Curry, et al. Multiple Strategy Bio-Detection Sensor Platforms Made From Carbon and Polymer Materials. Defense Technical Information Center, 2005. http://dx.doi.org/10.21236/ada436491.

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Giedd, Ryan, Kartik Ghosh, Matt Curry, Rishi Patel, and Paul Durham. Multiple Strategy Bio-Detection Sensor Platforms Made from Carbon and Polymer Materials. Defense Technical Information Center, 2005. http://dx.doi.org/10.21236/ada429916.

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Raj, Rishi. A Novel Polymer-Derived-nanoCeramic for Ultrahigh Temperature MEMS Micro-igniter/Sensor. Office of Scientific and Technical Information (OSTI), 2007. http://dx.doi.org/10.2172/939619.

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Holthoff, Ellen L., Lily Li, Tobias Hiller, and Kimberly L. Turner. A Molecularly Imprinted Polymer (MIP)-Coated Microbeam MEMS Sensor for Chemical Detection. Defense Technical Information Center, 2015. http://dx.doi.org/10.21236/ada622335.

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Sprunt, Samuel N., and L. C. Chien. Polymer-Stabilized Cholesteric Liquid Crystal Diffraction Gratings for Optical Switching and Sensor Applications. Defense Technical Information Center, 2002. http://dx.doi.org/10.21236/ada409045.

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Romero, Christopher Jesse, and Eric Lanich Brosha. 'Device Experimental Data: Polymer Nanowire Sensor Array for Subsurface CO2 Monitoring: Phase 2:Final. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1207759.

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Tzonev, Nick. PR-396-163702-R02 Petroleum Pipeline Polymer Absorption Sensor Leak Detection Cable Phase 2. Pipeline Research Council International, Inc. (PRCI), 2021. http://dx.doi.org/10.55274/r0012183.

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The goal of this Project is to validate and commercialize Syscor's External Leak Detection System (ELDS) cable and wireless sensor node. Syscor's ELDS cable system will be able to detect leaks smaller than 5 barrels (bbl) and will be suitable for deployment in new construction projects as well as existing underground pipelines. The capability of Syscor's ELDS to be plowed in place at a safe distance from the pipeline differentiates the solution from competing approaches as it is more economically viable for existing pipelines. The proposed leak detection cable will be able to recognize leaks that would previously remain unnoticed for long periods of time, reducing the release of chemicals into the environment and remediation costs to pipeline operators.

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