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Journal articles on the topic 'Optical chemical sensor'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Hayashi, Kenshi. "Optical Chemical Sensor." IEEJ Transactions on Sensors and Micromachines 135, no. 8 (2015): 299–304. http://dx.doi.org/10.1541/ieejsmas.135.299.

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Maslennikov, Aleksandr, Ilya Zubkov, and S. Kovalenko. "Optical chemical sensor for solving gas analysis tasks." MATEC Web of Conferences 212 (2018): 01029. http://dx.doi.org/10.1051/matecconf/201821201029.

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A brief review of the principles of constructing optical gas-analyzing sensors is presented. It is noted that the influence of humidity of the surrounding gas environment during gas analytical procedures using solid-state gas analytical sensors is a serious technological problem. It is shown that sensors of particular interest are functioning on the principle of absorption of the primary light flux because of their reduced sensitivity to fluctuations in the humidity of the carrier gas. The design and the gas analytical properties of an optical chemical sensor are described. Ammonia was used as

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Okura, Ichiro. "Overview of optical sensors using porphyrins." Journal of Porphyrins and Phthalocyanines 06, no. 04 (2002): 268–70. http://dx.doi.org/10.1142/s1088424602000300.

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To meet recent requirement of sensors, new optical sensor technology by molecules of functional chemical compounds as nano-scale sensor probes is developing. In this overview, the background and the concept of optical sensor technology are briefly introduced and a new optical sensing system by triplet-triplet absorption is discussed as an example.

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Maslennikov, Aleksandr, Ilya Zubkov, and V. Pautov. "Optical chemical sensor for solving leak detection problems." MATEC Web of Conferences 212 (2018): 01030. http://dx.doi.org/10.1051/matecconf/201821201030.

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The main features of the construction of gas analytical leak detection systems are noted, from the point of view of the sensitive element and the test substance (gas) used in the leak tightness control. It is shown that when checking the tightness of functioning systems, the standard leak detection equipment is of little use because it is impossible, in most cases, to use the specific test gases necessary for its operation. The use of solid-state gas analytical sensors for the construction of leak detection systems for operating process equipment is proposed. It is shown that one of the most s

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Pitruzzella, Rosalba, Chiara Marzano, Francesco Arcadio, et al. "Silica Optical Fibers Connected via a Micro MIP-Core Waveguide to Build Optical-Chemical Sensors." Chemosensors 13, no. 4 (2025): 139. https://doi.org/10.3390/chemosensors13040139.

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Molecularly imprinted polymers (MIPs) can be combined with optical fibers (OFs) to create various sensor configurations, yielding low-cost and highly sensitive extrinsic and intrinsic sensors. In this work, an MIP-based extrinsic optical fiber sensor is obtained by two silica OFs connected via an optical waveguide using an MIP as a core of micrometer size (micro OF-MIP-OF sensor). The proposed sensing approach can be used only with MIP receptors and implements an intensity-based sensor configuration. MIPs present several advantages over bio-receptors and can be exploited to realize novel sensi

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Chyad, Radhi M., Mohd Zubir Mat Jafri, and Kamarulazizi Ibrahim. "Nano-Optical Fiber Evanescent Field Sensors." Advanced Materials Research 626 (December 2012): 1027–32. http://dx.doi.org/10.4028/www.scientific.net/amr.626.1027.

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The nanofiber optic evanescent field sensor based on a changed cladding part as a sensor presented numerically. The influences of numerical opening, core radius of the fiber, the wavelength is effected on the light source and the submicron fiber on the sensors are promise to studied in this work. The results pointed out the sensitivity of the sensor increases when the numerical opening of the fiber is increases and the core radius is decreases. The NA of the fiber affects the sensitivity of the sensor. In the uniform core fiber, the increase in the NA increases the sensitivity of the sensor. T

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Cao, Rongtao, Jingyu Wu, Yang Yang, Mohan Wang, Yuqi Li, and Kevin P. Chen. "A High-Temperature Multipoint Hydrogen Sensor Using an Intrinsic Fabry–Perot Interferometer in Optical Fiber." Photonics 10, no. 3 (2023): 284. http://dx.doi.org/10.3390/photonics10030284.

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This paper presents a multiplexable fiber optic chemical sensor with the capability of monitoring hydrogen gas concentration at high temperatures up to 750 °C. The Pd-nanoparticle infused TiO2 films coated on intrinsic Fabry–Perot interferometer (IFPI) array were used as sensory films. Strains induced upon exposure to hydrogen with varied concentrations can be monitored by IFPI sensors. The fiber sensor shows a repetitive and reversible response when exposed to a low level (1–6%) of hydrogen gas. Uniform sensory behavior across all the sensing cavities is demonstrated and reported in this pape

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Caroleo, Fabrizio, Gabriele Magna, Mario Luigi Naitana, et al. "Advances in Optical Sensors for Persistent Organic Pollutant Environmental Monitoring." Sensors 22, no. 7 (2022): 2649. http://dx.doi.org/10.3390/s22072649.

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Optical chemical sensors are widely applied in many fields of modern analytical practice, due to their simplicity in preparation and signal acquisition, low costs, and fast response time. Moreover, the construction of most modern optical sensors requires neither wire connections with the detector nor sophisticated and energy-consuming hardware, enabling wireless sensor development for a fast, in-field and online analysis. In this review, the last five years of progress (from 2017 to 2021) in the field of optical chemical sensors development for persistent organic pollutants (POPs) is provided.

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Zhang, Miao, Jiangfan Shi, Chenglong Liao, et al. "Perylene Imide-Based Optical Chemosensors for Vapor Detection." Chemosensors 9, no. 1 (2020): 1. http://dx.doi.org/10.3390/chemosensors9010001.

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Perylene imide (PI) molecules and materials have been extensively studied for optical chemical sensors, particularly those based on fluorescence and colorimetric mode, taking advantage of the unique features of PIs such as structure tunability, good thermal, optical and chemical stability, strong electron affinity, strong visible light absorption and high fluorescence quantum yield. PI-based optical chemosensors have now found broad applications in gas phase detection of chemicals, including explosives, biomarkers of some food and diseases (such as organic amines (alkylamines and aromatic amin

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Potyrailo, Radislav A., and Gary M. Hieftje. "Distributed Fiber-Optic Chemical Sensor with Chemically Modified Plastic Cladding." Applied Spectroscopy 52, no. 8 (1998): 1092–95. http://dx.doi.org/10.1366/0003702981944805.

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A novel method for modification of the polymer cladding of an optical fiber has been developed for use in distributed chemical sensing. The usefulness of the new technique is illustrated by means of a distributed sensor for ammonium ions based on a 9 m long plastic-clad silica fiber modified with phenol red. The stability of the immobilized indicator made it possible, for the first time, to use a chemically modified fiber for the reversible detection of ammonium ions in highly alkaline solution (pH 11–14). The new sensor offers a broader dynamic range (four orders of magnitude) and shorter res

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Esfahani, Siavash, Akira Tiele, Samuel O. Agbroko, and James A. Covington. "Development of a Tuneable NDIR Optical Electronic Nose." Sensors 20, no. 23 (2020): 6875. http://dx.doi.org/10.3390/s20236875.

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Electronic nose (E-nose) technology provides an easy and inexpensive way to analyse chemical samples. In recent years, there has been increasing demand for E-noses in applications such as food safety, environmental monitoring and medical diagnostics. Currently, the majority of E-noses utilise an array of metal oxide (MOX) or conducting polymer (CP) gas sensors. However, these sensing technologies can suffer from sensor drift, poor repeatability and temperature and humidity effects. Optical gas sensors have the potential to overcome these issues. This paper reports on the development of an opti

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Lee, Jung Ryul, Chang Yong Yoon, Dipesh Dhital, and Dong Jin Yoon. "All-Fiber Optic Chemical Sensors for Public Safety Monitoring." Advanced Materials Research 123-125 (August 2010): 855–58. http://dx.doi.org/10.4028/www.scientific.net/amr.123-125.855.

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The leakage of toxic or flammable chemical substances that might affect or endanger public safety has always attracted the attention of the researchers to develop a chemical sensor that could prevent any life-threatening incidents. Due to its robust features, hard polymer clad fiber (HPCF) was used in this experiment to develop an all-fiber optical chemical sensor. The outer hard polymer clad was removed by using mechanical method to expose the inner core. The exposure lets contact between the leaked chemical and the core, both with different refractive indices (RI). The change in signal prope

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Mayeh, M., J. Viegas, P. Srinivasan, et al. "Design and Fabrication of Slotted Multimode Interference Devices for Chemical and Biological Sensing." Journal of Sensors 2009 (2009): 1–11. http://dx.doi.org/10.1155/2009/470175.

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We present optical sensors based on slotted multimode interference waveguides. The sensor can be tuned to highest sensitivity in the refractive index ranges necessary to detect protein-based molecules or other water-soluble chemical or biological materials. The material of choice is low-loss silicon oxynitride (SiON) which is highly stable to the reactivity with biological agents and processing chemicals. Sensors made with this technology are suited to high volume manufacturing.

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Farah, Bani Affan. "Temperature Sensors Development in the Chemical Industries." Journal of Alternative and Renewable Energy Sources 5, no. 3 (2019): 39–43. https://doi.org/10.5281/zenodo.3573024.

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Temperature sensors have been of major interest, especially in chemical industries, in order to increase the quality of wide range of products. These devices are considered to be the eyes of the chemical processes, as they report the continuous changes in temperature. This literature based research paper evaluates six different developed types of temperature sensors, according to four most critical parameters. This assessment was limited to the sensor location and accuracy, the range of temperature measured, and to the size of the temperature sensor. It is concluded that the technological temp

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Chen, Yongzhang, Yiwen Zheng, Haibing Xiao, et al. "Optical Fiber Probe Microcantilever Sensor Based on Fabry–Perot Interferometer." Sensors 22, no. 15 (2022): 5748. http://dx.doi.org/10.3390/s22155748.

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Optical fiber Fabry–Perot sensors have long been the focus of researchers in sensing applications because of their unique advantages, including highly effective, simple light path, low cost, compact size, and easy fabrication. Microcantilever-based devices have been extensively explored in chemical and biological fields while the interrogation methods are still a challenge. The optical fiber probe microcantilever sensor is constructed with a microcantilever beam on an optical fiber, which opens the door for highly sensitive, as well as convenient readout. In this review, we summarize a wide va

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Chen Xin, 陈鑫, and 顾铮天 Gu Zhengtian. "Progress of Optical Fiber pH Chemical Sensor." Laser & Optoelectronics Progress 48, no. 11 (2011): 110603. http://dx.doi.org/10.3788/lop48.110603.

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Archenault, M., H. Gagnaire, J. P. Goure, and N. Jaffrezic-Renault. "A simple intrinsic optical-fibre chemical sensor." Sensors and Actuators B: Chemical 8, no. 2 (1992): 161–66. http://dx.doi.org/10.1016/0925-4005(92)80174-v.

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Espinoza, Juan Diego Arias, Viacheslav Sazhnikov, Sami Sabik, et al. "Flexible Optical Chemical Sensor Platform for BTX." Procedia Engineering 47 (2012): 607–10. http://dx.doi.org/10.1016/j.proeng.2012.09.220.

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Weigl, B. H., and P. Yager. "Silicon-microfabricated diffusion-based optical chemical sensor." Sensors and Actuators B: Chemical 39, no. 1-3 (1997): 452–57. http://dx.doi.org/10.1016/s0925-4005(96)02120-x.

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20

Omar, Mohd Azwadi, Noran Azizan Cholan, Aminuddin Mohd, Mirsa Nurfarhan Mohd Azhan, Rahmat Talib, and Nor Hafizah Ngajikin. "Optical Temperature Sensor based on Sagnac Interferometer." International Journal of Engineering & Technology 7, no. 4.30 (2018): 126. http://dx.doi.org/10.14419/ijet.v7i4.30.22073.

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Optical temperature sensors gain interest from the community recently due to their immunity to electromagnetic interference and ruggedness against chemical and mechanical disturbances as opposed to the conventional temperature sensors such as thermocouples and resistance temperature detectors. Optical temperature sensors come with many varieties and Sagnac interferometer is one of them. In this work, an all-fiber temperature sensor is proposed and experimentally demonstrated. The proposed optical temperature utilizes Sagnac interferometer as the temperature head. The underlying mechanism for t

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Jalil, Muhammad Arif Bin. "Optical Fiber Bragg Grating As A Temperature Sensor." International Journal for Research in Applied Science and Engineering Technology 12, no. 8 (2024): 1238–47. http://dx.doi.org/10.22214/ijraset.2024.64058.

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The optical fibre sensor (OFS) has become quite well-known and prominent in the sensor technology industry. It is often used to react to outputs from other systems, like those in industrial, monitoring, and chemical analysis applications, and to detect changes in the environment. A Fibre Bragg Grating (FBG) is a device that allows light to be reflected from a short section of optical fiber at a specific wavelength, while the Bragg reflector expands and transmits all other wavelengths. The current effort focuses on the evolving characteristics and behaviors of strain and temperature sensors ope

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22

Amao, Yutaka, and Ichiro Okura. "Optical oxygen sensor devices using metalloporphyrins." Journal of Porphyrins and Phthalocyanines 13, no. 11 (2009): 1111–22. http://dx.doi.org/10.1142/s1088424609001455.

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Oxygen-monitoring techniques are applied to various fields, such as chemicals, deep sea environment, fluid dynamics, clinical analysis and environmental monitoring. Recently, a variety of devices and sensors based on phosphorescence or photoexcited state quenching of porphyrin molecules have been developed to measure oxygen concentration on the solid surface. Many optical oxygen sensors are composed of porphyrins (platinum(II), palladium(II), zinc(II), metal-free, etc.) dispersed in oxygen-permeable polymer film or directly immobilized onto solid surface via chemical or physical adsorption. Ox

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Jalil, Muhammad Arif Bin. "Optical Fiber Bragg Grating as a Strain Sensor." International Journal for Research in Applied Science and Engineering Technology 12, no. 8 (2024): 1282–92. http://dx.doi.org/10.22214/ijraset.2024.64059.

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Abstract: The sensor technology industry has come to recognize and value the optical fibre sensor (OFS). It is frequently used to detect changes in the environment and to respond to outputs from other systems, such as those in industrial, monitoring, and chemical analysis applications. While a brief segment of optical fiber with a particular wavelength is reflected with light in a device known as a Fibre Bragg Grating, a Bragg reflector begins to grow and transmit all other wavelengths. Through software modeling, the current study focuses on the changing traits and behaviors of temperature and

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Abdul Ghafar, Nurul Athirah Mohamad, Arni Munira Markom, Marni Azira Markom, and Ahmad Razif Muhammad. "Optical Fiber Sensor for Heavy Chemical Detection: An Overview." Journal of Physics: Conference Series 2075, no. 1 (2021): 012010. http://dx.doi.org/10.1088/1742-6596/2075/1/012010.

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Abstract Heavy metal contaminations such as mercury, lead, arsenic, cadmium, and zinc are becoming more serious and have become a hazard to human health. Due to their non-biodegradable nature, they can easily accumulate in the environment and cause toxicity even at low concentrations. Therefore, detecting the presence of these metal ions requires a highly sensitive sensing method. Traditional detection methods, such as electrochemical analysis, require complicated sample preparation, are costly, and typically require a lengthy measurement period. These days, optical fiber sensors have been ack

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Zhang, Bo, and Pu-Xian Gao. "Single Chemical Sensor for Multi-Analyte Mixture Detection and Measurement: A Review." International Journal of High Speed Electronics and Systems 29, no. 01n04 (2020): 2040008. http://dx.doi.org/10.1142/s012915642040008x.

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Multi-analyte chemical sensor aims to transform subtle variations in multiple analytes’ physical or chemical properties into distinct output signals. Chemically responsive nanostructure array (nanoarray) promises as a competitive sensor platform due to its robust physical properties, tunable chemical composition, and high surface area for analyte interaction. Specifically, the well-defined size, shape, and tunable surface structure and properties make it feasible to develop either new sensing modes on single device or integrated multi-modular sensors. In conjunction with the well-developed res

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Tuccitto, Nunzio, Luca Spitaleri, Giovanni Li Destri, Andrea Pappalardo, Antonino Gulino, and Giuseppe Trusso Sfrazzetto. "Supramolecular Sensing of a Chemical Warfare Agents Simulant by Functionalized Carbon Nanoparticles." Molecules 25, no. 23 (2020): 5731. http://dx.doi.org/10.3390/molecules25235731.

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Real-time sensing of chemical warfare agents by optical sensors is today a crucial target to prevent terroristic attacks by chemical weapons. Here the synthesis, characterization and detection properties of a new sensor, based on covalently functionalized carbon nanoparticles, are reported. This nanosensor exploits noncovalent interactions, in particular hydrogen bonds, to detect DMMP, a simulant of nerve agents. The nanostructure of the sensor combined with the supramolecular sensing approach leads to high binding constant affinity, high selectivity and the possibility to reuse the sensor.

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Korent Urek, Špela, Nina Frančič, Matejka Turel, and Aleksandra Lobnik. "Sensing Heavy Metals Using Mesoporous-Based Optical Chemical Sensors." Journal of Nanomaterials 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/501320.

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Heavy metal pollution is one of the more serious environmental problems; therefore, there is a constant demand for the development of new analytical tools for its monitoring. An optical chemical sensor represents a good alternative to classical instrumental methods. The mesoporous materials used in optical chemical sensors’ fabrications have properties such as high porosity, exceptional adsorption capacity, tuneable 3D shape, geometry, and morphology, which enable improved limit of detection, response time, and selectivity properties of optical sensors. In this review, we firstly present the p

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Monteiro, Catarina S., Maria Raposo, Paulo A. Ribeiro, Susana O. Silva, and Orlando Frazão. "Acoustic Optical Fiber Sensor Based on Graphene Oxide Membrane." Sensors 21, no. 7 (2021): 2336. http://dx.doi.org/10.3390/s21072336.

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A Fabry–Pérot acoustic sensor based on a graphene oxide membrane was developed with the aim to achieve a faster and simpler fabrication procedure when compared to similar graphene-based acoustic sensors. In addition, the proposed sensor was fabricated using methods that reduce chemical hazards and environmental impacts. The developed sensor, with an optical cavity of around 246 µm, showed a constant reflected signal amplitude of 6.8 ± 0.1 dB for 100 nm wavelength range. The sensor attained a wideband operation range between 20 and 100 kHz, with a maximum signal-to-noise ratio (SNR) of 32.7 dB

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Bui, The Huy, Balamurugan Thangavel, Mirkomil Sharipov, Kuangcai Chen, and Joong Ho Shin. "Smartphone-Based Portable Bio-Chemical Sensors: Exploring Recent Advancements." Chemosensors 11, no. 9 (2023): 468. http://dx.doi.org/10.3390/chemosensors11090468.

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Traditionally, analytical chemistry and diagnosis relied on wet laboratories and skilled professionals utilizing sophisticated instruments for sample handling and analysis. However, with the development of novel materials and sensing techniques, there has been a significant shift towards the use of standalone sensors, allowing tests to be conducted on-site or even in real time, leading to cost- and time-efficiency. With their widespread adoption globally, smartphones have emerged as an ideal platform for such sensors, boasting extensive sensor capabilities, advanced processing power, and commu

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Tyler, Neil. "Next Generation Mid-Infrared Optical Sensor." New Electronics 52, no. 3 (2019): 8. http://dx.doi.org/10.12968/s0047-9624(22)60899-x.

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31

Jali, Mohd Hafiz, Hazli Rafis Abdul Rahim, Md Ashadi Md Johari, et al. "Optical Microfiber Sensor : A Review." Journal of Physics: Conference Series 2075, no. 1 (2021): 012021. http://dx.doi.org/10.1088/1742-6596/2075/1/012021.

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Abstract Due to numerous benefits such as geometrical simplicity, compact size, high sensitivity, broad detection range, low noise, and high accuracy, optical devices have attracted a lot of interest for sensing applications. It is critical in a variety of sectors, including cultural relic preservation, warehouse products maintenance, manufacturing process control, semiconductor, agriculture, food production storage, environmental control, health industries, chemical and home improvement. It outperforms its electronic equivalent owing to its capacity to function in tough and demanding situatio

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Motala, Michael, Lucas K. Beagle, Jason Lynch, et al. "Selective vapor sensors with thin-film MoS₂-coated optical fibers." Journal of Vacuum Science & Technology A 40, no. 3 (2022): 032202. http://dx.doi.org/10.1116/6.0001759.

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Effective chemical sensor devices must facilitate both the detection of analytes at ultralow concentrations and the ability to distinguish one analyte from another. Sensors built using two-dimensional nanomaterials have demonstrated record-level sensitivity toward certain chemical vapor species, but the specificity of chemical analyte detection remains lacking. To address this deficiency, this work pioneers the use of a broadband fiber-optic sensor coated with thin-film MoS2 where selectivity is achieved through observing changes in the visible spectrum transmission during exposure to differen

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Struk, Przemysław. "Numerical analysis of integrated photonics structures for hemoglobin sensor application." Photonics Letters of Poland 12, no. 2 (2020): 37. http://dx.doi.org/10.4302/plp.v12i2.1008.

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This paper presents sensor structure dedicated for determination the key properties of blood – concentration level and oxidation level. The sensor structure is based integrated optics circuit with diamond-based planar waveguide including prism and grating coupler. The paper is focused on numerical analysis of selected properties of sensor structure for optimization sensing parameters. Full Text: PDF ReferencesD.A. Gell, Blood Cells, "Structure and function of haemoglobins", Molecules and Diseases 70 (2018). CrossRef I. Singh, A. Weston, A. Kundur, G. Dobie, Haematology Case Studies with Blood

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Patrick, Chris. "Nanomaterial coating improves chemical sensor selectivity." Scilight 2022, no. 14 (2022): 141107. http://dx.doi.org/10.1063/10.0010247.

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Opilski, Zbigniew, Tadeusz Piotr Pustelny, and Jolanta Ignac-Nowicka. "Spectral studies of phthalocyanines." Photonics Letters of Poland 11, no. 2 (2019): 53. http://dx.doi.org/10.4302/plp.v11i2.909.

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The paper presents the results of research of the optical properties of nickel-phthalocyanines (NiPc) in a wide spectrum range of optical radiation . Phthalocyanines belong to the group of organic semiconductors with a complicated molecular structure. Spectral characteristics of complex refractive index and optical transmission coefficient were determined. The tests were carried out in the range of wavelengths of optical radiation: 300-2500 nm. By means of Surface Plasmon Resonance (SPR) method, tests concerning the possibilities of using nickel phthalocyanines in gaseous sensors of nitrogen d

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Martín, Francisco Ferrero, Marta Valledor Llopis, Juan C. Campo Rodríguez, et al. "Optoelectronic Instrumentation and Measurement Strategies for Optical Chemical (Bio)Sensing." Applied Sciences 11, no. 17 (2021): 7849. http://dx.doi.org/10.3390/app11177849.

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There is a growing interest in the development of sensitive, portable, and low-cost instrumentation for optical chemical (bio)sensing. Such instrumentation can allow real-time decision-making for industry, farmers, and researchers. The combination of optical fiber schemes, luminescence spectroscopy techniques, and new materials for sensor immobilization has allowed the growth of optical sensors. This article focuses on the development of low-cost optoelectronic instrumentation and measurement strategies for optical chemical (bio)sensing. Most of the articles in this field have focused on the c

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Liu, Fei, Wen Zhang, Xianzheng Lang, et al. "Development of Taper-in-Taper-Based Optical Fiber Sensors for Chemical and Biological Sensing." Photonics 10, no. 5 (2023): 567. http://dx.doi.org/10.3390/photonics10050567.

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This paper presents the development of taper-in-taper fiber (TITF)–optical fiber-based sensors for chemical and biological detection. TITF structure is a fiber structure formed by fabricating a taper again on the taper region of the traditional taper fiber. The experimental results show that the TITF structure has a lower transmitted intensity than the common taper fiber structure. It is demonstrated that the structure of TITF is more conducive to evanescent waves, thereby making it more sensitive to changes in the refractive index (RI) of the external environment. To confirm this, measurement

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Liebsch, Gregor, Ingo Klimant, Bernhard Frank, Gerhard Holst, and Otto S. Wolfbeis. "Luminescence Lifetime Imaging of Oxygen, pH, and Carbon Dioxide Distribution Using Optical Sensors." Applied Spectroscopy 54, no. 4 (2000): 548–59. http://dx.doi.org/10.1366/0003702001949726.

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We present a modular system for time-resolved two-dimensional luminescence lifetime imaging of planar optical chemical sensors. It is based on a fast, gateable charge-coupled device (CCD) camera without image intensifier and a pulsable light-emitting diode (LED) array as a light source. Software was developed for data acquisition with a maximum of parameter variability and for background suppression. This approach allows the operation of the system even under daylight. Optical sensors showing analyte-specific changes of their luminescence decay time were tested and used for sensing pO2, pCO2,

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Matsubara, Koji, Satoshi Kawata, and Shigeo Minami. "Optical chemical sensor based on surface plasmon measurement." Applied Optics 27, no. 6 (1988): 1160. http://dx.doi.org/10.1364/ao.27.001160.

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Tubb, A. J. C., F. P. Payne, R. Millington, and C. R. Lowe. "Singlemode optical fibre surface plasma wave chemical sensor." Electronics Letters 31, no. 20 (1995): 1770–71. http://dx.doi.org/10.1049/el:19951206.

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Coo, L. "Nafion–PAN optical chemical sensor: optimization by FIA." Talanta 58, no. 6 (2002): 1063–69. http://dx.doi.org/10.1016/s0039-9140(02)00429-0.

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Nakajima, Fumihiro, Yasuyuki Hirakawa, Takashi Kaneta, and Totaro Imasaka. "Diffractive Optical Chemical Sensor Based on Light Absorption." Analytical Chemistry 71, no. 13 (1999): 2262–65. http://dx.doi.org/10.1021/ac990216n.

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Brito-Brito, Zabdiel, Jesús Salvador Velázquez-González, Fermín Mira, et al. "Wireless Sensor Node for Chemical Agent Detection." Chemosensors 12, no. 9 (2024): 185. http://dx.doi.org/10.3390/chemosensors12090185.

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In this manuscript, we present in detail the design and implementation of the hardware and software to produce a standalone wireless sensor node, called SensorQ system, for the detection of a toxic chemical agent. The proposed wireless sensor node prototype is composed of a micro-controller unit (MCU), a radio frequency (RF) transceiver, a dual-band antenna, a rechargeable battery, a voltage regulator, and four integrated sensing devices, all of them integrated in a package with final dimensions and weight of 200 × 80 × 60 mm and 0.422 kg, respectively. The proposed SensorQ prototype operates

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Brito-Brito, Z., JS Velázquez-González, F. Mira, et al. "Wireless Sensor Node for Chemical Agent Detection." Chemosensors 12, no. 9 (2024): 185. https://doi.org/10.3390/chemosensors12090185.

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In this manuscript, we present in detail the design and implementation of the hardware and software to produce a standalone wireless sensor node, called SensorQ system, for the detection of a toxic chemical agent. The proposed wireless sensor node prototype is composed of a micro-controller unit (MCU), a radio frequency (RF) transceiver, a dual-band antenna, a rechargeable battery, a voltage regulator, and four integrated sensing devices, all of them integrated in a package with final dimensions and weight of 200 × 80 × 60 mm and 0.422 kg, respectively. The proposed SensorQ prototype operates

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Taguchi, Kozo, and Motohiko Takatsu. "Chemically Etched Axicon Fiber as a Sensor Probe of Optical Coherence Tomography." Key Engineering Materials 625 (August 2014): 754–58. http://dx.doi.org/10.4028/www.scientific.net/kem.625.754.

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In this paper, we investigated a high lateral resolution common-path Fourier domain OCT system with the use of a chemically etched single mode fiber. In our experiments, single mode optical fiber for 840nm was used for preparing the tapered tips. Our system used a conical microlens that was chemically etched by selective chemical etching technique using an etching solution of buffered hydrofluoric acid (BHF). From experimental results, we verified that our proposed optical coherence tomography system could operate as a common-path Fourier domain OCT (FD-OCT) system. Furthermore, we experimenta

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Minagawa, Yuichi, Mari Ohashi, Yoshinori Kagawa, Arata Urimoto, and Hiroshi Ishida. "Compact Surface Plasmon Resonance Sensor for Underwater Chemical Sensing Robot." Journal of Sensors 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/9846780.

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This paper reports on the development of compact surface plasmon resonance (SPR) sensors for mobile robot olfaction. Underwater robots benefit from olfactory sensing capabilities in various tasks including the search for unexploded ordnance and undersea wreckage. Although the SPR-based chemical sensor is a promising sensing platform, the cumbersome optical setup has been limiting its use on mobile robots. The proposed sensor employs a periodic metal structure formed on a self-assembled layer of polystyrene particles of 200 nm in diameter. With the grating of this size, SPR can be excited even

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Folkerts, Chandler, Joe D. Luck, Santosh Kumar Pitla, and Yufeng Ge. "Optical Sensor System for Chemical Flow Rate Monitoring with Direct Nozzle Injection." Journal of the ASABE 65, no. 1 (2022): 87–95. http://dx.doi.org/10.13031/ja.14590.

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HighlightsA novel optical sensor system was developed to accurately measure simulated chemical (water with dye) flow rates observed with direct nozzle injection systems for agricultural sprayers.The average error in chemical flow rate estimates was only 2% across a typical range of injection rates.The prototype optical sensor system was capable of detecting dye dilutions to a level of 1:150,000.Abstract. Direct injection systems have the potential to provide several benefits to spray applicators (e.g., easing boom cleanout procedures); however, lag time and proper mixing continue to hinder ado

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Suherman, Suherman, Muh Supwatul Hakim, and Agus Kuncaka. "Optical Chemical Sensor Based on 2,2-Furildioxime in Sol-Gel Matrix for Determination of Ni2+ in Water." Processes 9, no. 2 (2021): 280. http://dx.doi.org/10.3390/pr9020280.

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A new optical chemical sensor was fabricated based on incorporation of 2,2-furildioxime as a sensitive reagent into the nanopore of a transparent glasslike material through the sol-gel method which was suitable for determination of Ni2+ ions in aqueous solutions. The prepared sensors were composed of tetraethoxysilane (TEOS), 2,2-furildioxime, methanol, hydrochloric acid and Triton X-100. The sensors were constructed by dip coating onto glass substrates. The optimum response of the sensor toward Ni2+ ions was reached at pH 8.5 and the contact time for the formation of the complex at 10 min. Th

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Hassan, Hafeez, Ole Bang, and Jakob Janting. "Polymer Optical Fiber Tip Mass Production Etch Mechanism to Achieve CPC Shape for Improved Biosensor Performance." Sensors 19, no. 2 (2019): 285. http://dx.doi.org/10.3390/s19020285.

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We report on a simple chemical etching method that enables nonlinear tapering of Polymer Optical Fiber (POF) tips to manufacture Compound Parabolic Concentrator (CPC) fiber tips. We show that, counter-intuitively, nonlinear tapering can be achieved by first etching the core and not the cladding. The etching mechanism is modelled and etched tips are characterized both geometrically and optically in a fluorescence glucose sensor chemistry. A Zemax model of the CPC tipped sensor predicts an optimal improvement in light capturing efficiency of a factor of 3.96 compared to the conventional sensor w

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Kim, Yeonhong, Yangwon Jeon, Minyoung Na, Soon-Jin Hwang, and Youngdae Yoon. "Recent Trends in Chemical Sensors for Detecting Toxic Materials." Sensors 24, no. 2 (2024): 431. http://dx.doi.org/10.3390/s24020431.

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Industrial development has led to the widespread production of toxic materials, including carcinogenic, mutagenic, and toxic chemicals. Even with strict management and control measures, such materials still pose threats to human health. Therefore, convenient chemical sensors are required for toxic chemical monitoring, such as optical, electrochemical, nanomaterial-based, and biological-system-based sensors. Many existing and new chemical sensors have been developed, as well as new methods based on novel technologies for detecting toxic materials. The emergence of material sciences and advanced

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