Готові списки джерел за темами / Optical based sensor

Добірка наукової літератури з теми "Optical based sensor"

Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Optical based sensor"

1

Zhengtong Wei, Zhengtong Wei, Zhangqi Song Zhangqi Song, Xueliang Zhang Xueliang Zhang, Yang Yu Yang Yu, and Zhou Meng Zhou Meng. "Miniature temperature sensor based on optical microf iber." Chinese Optics Letters 11, no. 11 (2013): 110602–5. http://dx.doi.org/10.3788/col201311.110602.

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2

Wang, Yanlu, Zhiping Yang, Mingyu Li, Jian-Jun He, and Qiushun Li. "Thermal-optic tuning cascaded double ring optical sensor based on wavelength interrogation." Chinese Optics Letters 20, no. 1 (2022): 011301. http://dx.doi.org/10.3788/col202220.011301.

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3

Jones, Thomas P., and Marc D. Porter. "An Optical Sensor Based on Infrared Spectroscopy." Applied Spectroscopy 43, no. 6 (August 1989): 908–11. http://dx.doi.org/10.1366/0003702894203822.

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A thin-film pH sensor based on vibrational spectroscopy has been developed. The sensor was constructed by the immobilization of Congo Red at a base-hydrolyzed cellulose acetate film that had been coated onto a ZnSe internal reflection element. The protonation of the azo groups of Congo Red was monitored as a function of pH with infrared internal reflection spectroscopy. The response characteristics of this sensor demonstrate the potential utility of applying infrared spectroscopy to detect the response of thin film sensors. Opportunities to design sensors based on the molecular specificity of infrared spectroscopy are briefly discussed.
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4

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 (November 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 this sensor is based on the temperature dependence of a polarization maintaining fiber (PMF) in the Sagnac interferometer. The PMF birefringence which is influenced by temperature affects the phase difference of two incoming lights that enter the Sagnac interferometer and this contributes to the shifting of the transmission spectrum. The input light for the sensor characterization is provided by a custom-made amplified spontaneous emission source which comprises of a tunable laser source, a 980 nm laser diode pump, a wavelength division multiplexing coupler and a 10 m long erbium-doped fiber. Experimental results indicate that the temperature does affect the PMF characteristic. As the temperature increases from 30°C to 45°C, the wavelength dip reduced from 1553.8 nm to 1536.78nm. This proposed optical temperature sensor has a sensitivity of-1.0345 nm/°C. The development of this optical temperature sensor is promising especially for the measurement in the harsh environment.
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5

Penso, Camila M., João L. Rocha, Marcos S. Martins, Paulo J. Sousa, Vânia C. Pinto, Graça Minas, Maria M. Silva, and Luís M. Goncalves. "PtOEP–PDMS-Based Optical Oxygen Sensor." Sensors 21, no. 16 (August 21, 2021): 5645. http://dx.doi.org/10.3390/s21165645.

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The advanced and widespread use of microfluidic devices, which are usually fabricated in polydimethylsiloxane (PDMS), requires the integration of many sensors, always compatible with microfluidic fabrication processes. Moreover, current limitations of the existing optical and electrochemical oxygen sensors regarding long-term stability due to sensor degradation, biofouling, fabrication processes and cost have led to the development of new approaches. Thus, this manuscript reports the development, fabrication and characterization of a low-cost and highly sensitive dissolved oxygen optical sensor based on a membrane of PDMS doped with platinum octaethylporphyrin (PtOEP) film, fabricated using standard microfluidic materials and processes. The excellent mechanical and chemical properties (high permeability to oxygen, anti-biofouling characteristics) of PDMS result in membranes with superior sensitivity compared with other matrix materials. The wide use of PtOEP in sensing applications, due to its advantage of being easily synthesized using microtechnologies, its strong phosphorescence at room temperature with a quantum yield close to 50%, its excellent Strokes Shift as well as its relatively long lifetime (75 µs), provide the suitable conditions for the development of a miniaturized luminescence optical oxygen sensor allowing long-term applications. The influence of the PDMS film thickness (0.1–2.5 mm) and the PtOEP concentration (363, 545, 727 ppm) in luminescent properties are presented. This enables to achieve low detection levels in a gas media range from 0.5% up to 20%, and in liquid media from 0.5 mg/L up to 3.3 mg/L at 1 atm, 25 °C. As a result, we propose a simple and cost-effective system based on a LED membrane photodiode system to detect low oxygen concentrations for in situ applications.
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6

Chi, Xingqiang, Xiangjun Wang, and Xuan Ke. "Optical Fiber–Based Continuous Liquid Level Sensor Based on Rayleigh Backscattering." Micromachines 13, no. 4 (April 17, 2022): 633. http://dx.doi.org/10.3390/mi13040633.

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Анотація:
This work reports an optical fiber–based continuous liquid level sensor for cryogenic propellant mass gauging, which has significant advantages over the existing liquid level sensors in terms of accuracy, simplicity, and reliability. Based on Rayleigh backscattering coherent optical frequency domain reflectometry, every point of the sensing fiber is a liquid sensor which is able to distinguish liquid and vapor. We obtained a measurement accuracy of 1 mm for the optical fiber sensor by measuring both liquid nitrogen and water levels. For the first time, for practical applications, we experimentally studied the influence of ambient temperature and strain changes on the sensing performance as well as the repeatability of the optical fiber–based liquid level sensor’s measurements.
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7

Chen, Yongzhang, Yiwen Zheng, Haibing Xiao, Dezhi Liang, Yufeng Zhang, Yongqin Yu, Chenlin Du, and Shuangchen Ruan. "Optical Fiber Probe Microcantilever Sensor Based on Fabry–Perot Interferometer." Sensors 22, no. 15 (August 1, 2022): 5748. http://dx.doi.org/10.3390/s22155748.

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Анотація:
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 variety of optical fiber probe microcantilever sensors based on Fabry–Perot interferometer. The operation principle of the optical fiber probe microcantilever sensor is introduced. The fabrication methods, materials, and sensing applications of an optical fiber probe microcantilever sensor with different structures are discussed in detail. The performances of different kinds of fiber probe microcantilever sensors are compared. We also prospect the possible development direction of optical fiber microcantilever sensors.
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8

Shi, Chaoying, Xiuhong Liu, Jinhua Hu, Haiyan Han, and Jijun Zhao. "High performance optical sensor based on double compound symmetric gratings." Chinese Optics Letters 20, no. 2 (2022): 021201. http://dx.doi.org/10.3788/col202220.021201.

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9

Kleber, Florian, Christopher Pramerdorfer, Elisabeth Wetzinger, and Martin Kampel. "Optical Sensor Evaluation for Vision Based Recognition of Electronics Waste." International Journal of Environmental Science and Development 6, no. 12 (2015): 929–33. http://dx.doi.org/10.7763/ijesd.2015.v6.724.

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10

Lazarova, Katerina, Silvia Bozhilova, Sijka Ivanova, Darinka Christova, and Tsvetanka Babeva. "Flexible and Transparent Polymer-Based Optical Humidity Sensor." Sensors 21, no. 11 (May 25, 2021): 3674. http://dx.doi.org/10.3390/s21113674.

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Анотація:
Thin spin-coated polymer films of amphiphilic copolymer obtained by partial acetalization of poly (vinyl alcohol) are used as humidity-sensitive media. They are deposited on polymer substrate (PET) in order to obtain a flexible humidity sensor. Pre-metallization of substrate is implemented for increasing the optical contrast of the sensor, thus improving the sensitivity. The morphology of the sensors is studied by surface profiling, while the transparency of the sensor is controlled by transmittance measurements. The sensing behavior is evaluated through monitoring of transmittance values at different levels of relative humidity gradually changing in the range 5–95% and the influence of up to 1000 bending deformations is estimated by determining the hysteresis and sensitivity of the flexible sensor after each set of deformations. The successful development of a flexible sensor for optical monitoring of humidity in a wide humidity range is demonstrated and discussed.
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Дисертації з теми "Optical based sensor"

1

Bronk, Karen Srour. "Imaging based sensor arrays /." Thesis, Connect to Dissertations & Theses @ Tufts University, 1996.

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Thesis (Ph.D.)--Tufts University, 1996.
Adviser: David R. Walt. Submitted to the Dept. of Chemistry. Includes bibliographical references. Access restricted to members of the Tufts University community. Also available via the World Wide Web;
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2

Andrews, Jeffrey Pratt. "Longitudinal misalignment based strain sensor." Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/43283.

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A practical fiber optic strain sensor has been developed to measure strains in the range of 0.0 to 2.0 percent strain with a resolution ranging between 10 and 100 microstrain depending on sensor design choices. This intensity based sensor measures strain by monitoring strain induced longitudinal misalignment in a novel fiber interconnection. This interconnection is created by aligning fibers within a segment of hollow core fiber. Related splice loss mechanisms are investigated for their effect on resolution. The effect of gauge length and launch conditions are also investigated.


Master of Science
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3

Chen, Qiao. "ESA based fiber optical humidity sensor." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/10134.

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Several techniques for measuring humidity are presented. The goal of the study is to use the electrostatic self-assembled monolayer synthesis process to fabricate a Fabry-Parot Cavity based optical fiber humidity sensor. The sensing scheme bases on the refractive index change with relative humidity of the film applied to the end of optical fiber. That is, the change in reflected optical power indicates certain humidity. To achieve this, some chemicals induce on specific coating materials were applied at the end of optical fiber. In this thesis, experimental results are given to prove that the humidity sensor has high sensitive and fast response time. Furthermore, we investigate the potential for the use of human breathing monitoring and air flow rate detection. Results from preliminary tests of each are given.
Master of Science
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4

Miller, Mark S. "Optical fiber-based corrosion sensor systems." Diss., This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-03042009-041455/.

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5

Fan, Chenjun. "Fiber optic sensor based on dual ring resonator system /." Online version of thesis, 1992. http://hdl.handle.net/1850/11070.

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6

Sun, Kailiang. "Fluorescence based optical sensor for protein detection." Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2010r/ksun.pdf.

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7

Mohamad, Mohd Fuad Bin. "Luminescence-based optical sensors towards in vivo analysis." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31215.

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Continuous monitoring of physiological parameters such as pH and oxygen (O2) are of great importance in determining the health status of a patient. Arterial blood gas analysis is a current clinical method used to measure pH, PCO2, PO2, and the concentration of variety of ions, typically with blood withdrawn from an artery. The need for robust, and a rapidly responding technology to enable bed-side monitoring has driven considerable efforts to produce better sensor devices. Optical sensing systems have experienced rapid growth, with drivers including low-cost optical fibres, and the availability of miniature optical set-ups (light sources, detectors, etc.). Herein, polymer-based optical fibre sensors for pH and O2 sensing were developed. The pH and/or oxygen reporters were immobilised at the end of an optical fibre by photo-polymerisation, and their performance in measuring pH and O2 concentration investigated. pH sensing was based on fluorescence detection using single excitation/single emission (Chapter 2), and single excitation/dual emission (Chapter 3). O2 sensing was based on the luminescence quenching of metalloporphyrins by oxygen (Chapter 4). In the last chapter, the in vivo applicability of an O2 sensor was investigated by measuring O2 level changes inside an ex vivo lung.
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8

Rooney, James Michael. "Model based exploration of an optical sensor architecture." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620014.

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9

Xiao, Hai. "Self-Calibrated Interferometric/Intensity-Based Fiber Optic Pressure Sensors." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/28845.

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Анотація:
To fulfill the objective of providing robust and reliable fiber optic pressure sensors capable of operating in harsh environments, this dissertation presents the detailed research work on the design, modeling, implementation, analysis, and performance evaluation of the novel fiber optic self-calibrated interferometric/intensity-based (SCIIB) pressure sensor system. By self-referencing its two channels outputs, for the first time to our knowledge, the developed SCIIB technology can fully compensate for the fluctuation of source power and the variations of fiber losses. Based on the SCIIB principle, both multimode and single-mode fiber-based SCIIB sensor systems were designed and successfully implemented. To achieve all the potential advantages of the SCIIB technology, the novel controlled thermal bonding method was proposed, designed, and developed to fabricate high performance fiber optic Fabry-Perot sensor probes with excellent mechanical strength and temperature stability. Mathematical models of the sensor in response to the pressure and temperature are studied to provide a guideline for optimal design of the sensor probe. The solid and detailed noise analysis is also presented to provide a better understanding of the performance limitation of the SCIIB system. Based on the system noise analysis results, optimization measures are proposed to improve the system performance. Extensive experiments have also been conducted to systematically evaluate the performance of the instrumentation systems and the sensor probes. The major test results give us the confidence to believe that the development of the fiber optic SCIIB pressure sensor system provides a reliable pressure measurement tool capable of operating in high pressure, high temperature harsh environments.
Ph. D.
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10

Xu, Lina. "Optical fiber humidity sensor based on evanescent wave scattering." MSSTATE, 2004. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07092004-112625/.

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Анотація:
An optical fiber humidity sensor has been devised using a porous sol-gel silica (PSGS) coating as a transducer. Evanescent wave scattering (EWS) in the PSGS coating. PSGS particles are highly hydrophilic and have a strong tendency to absorb water molecules from the surrounding environment. The absorbed water molecules form a thin layer on the inner surface of the pores inside the porous silica and enhance EWS, from which an indicatory signal can be obtained. The humidity sensor presented in this thesis has a fast response, is reversible, low cost, and has a broad dynamic relative humidity range from 3.6?0-6% to 100% or humidity range from 1.2ppm to 30000ppm. Because of its multiple advantages, including immunity to electromagnetic interference, resistance to corrosive environments, and high sensitivity, this humidity sensor has various applications. In soil moisture sensing, this humidity sensor can avoid the interference caused by compounds in soil water. For electrical transformer moisture sensing, this humidity sensor can avoid the effect of electromagnetic fields.
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Книги з теми "Optical based sensor"

1

Green, D. A. The BIRIS server: Integration of a three-dimensional range sensor into a harmony-based realtime architecture. Ottawa: National Research Council of Canada, 1992.

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2

Conference on Optical Fiber Sensor-Based Smart Materials and Structures (1991 Blacksburg, Va.). Proceedings of the Conference on Optical Fiber Sensor-Based Smart Materials and Structures: April 3-4, 1991, Blacksburg, Virginia. Lancaster, Pa: Technomic Pub. Co., 1991.

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3

Gregory, A. E. Studies leading to the development of an optical sensor for alkaline earth metal ions based on porphyrins. Manchester: UMIST, 1993.

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4

Smart Materials and Structures Workshop (5th 1992 Blacksburg, Va.). Fiber optic sensor-based smart materials and structures: Papers presented at the Fifth annual Smart Materials and Structures Workshop, Blacksburg, Virginia, 15-16 April 1992. Bristol: Institute of Physics Pub., 1992.

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5

Guang-Zhong, Yang, ed. Body sensor networks. London: Springer, 2006.

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6

Gupta, Banshi D., Anuj K. Sharma, and Jin Li. Plasmonics-Based Optical Sensors and Detectors. New York: Jenny Stanford Publishing, 2023. http://dx.doi.org/10.1201/9781003438304.

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7

Hornung, Mark R. Micromachined Ultrasound-Based Proximity Sensors. Boston, MA: Springer US, 1999.

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8

Goodlet, G. The development of optical sensors based on nedox reagents. Manchester: UMIST, 1993.

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9

Hucks, John A. Fusion of ground-based sensors for optimal tracking of military targets. Monterey, Calif: Naval Postgraduate School, 1989.

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10

Song, Zhen. Optimal Observation for Cyber-physical Systems: A Fisher-information-matrix-based Approach. London: Springer London, 2009.

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Частини книг з теми "Optical based sensor"

1

Mondal, Aniruddha, and Anupam Ghosh. "TiO2 Nanowire-Based Optical Sensor." In Photonics and Fiber Optics, 249–74. Boca Raton : Taylor & Francis, 2020.: CRC Press, 2019. http://dx.doi.org/10.1201/9780429026584-11.

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2

Reardon, Kenneth F., Zhong Zhong, and Kevin L. Lear. "Environmental Applications of Photoluminescence-Based Biosensors." In Optical Sensor Systems in Biotechnology, 143–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/10_2008_51.

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3

Lenka, Archita, Bandita Panda, Chinmaya Kumar Sahu, Narayan Panda, and Sandip Kumar Dash. "Optical Sensor-Based Hydrogen Gas Detection." In Sensors for Stretchable Electronics in Nanotechnology, 105–41. New York: CRC Press, 2021. http://dx.doi.org/10.1201/9781003123781-8.

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4

Dutta, Aradhana. "Brief Review on Integrated Planar Waveguide-Based Optical Sensor." In Planar Waveguide Optical Sensors, 9–69. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-35140-7_2.

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5

Dutta, Aradhana, and Partha Pratim Sahu. "Waveguide Sensor for Detecting Adulteration in Petroleum-Based Products." In Planar Waveguide Optical Sensors, 137–49. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-35140-7_5.

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6

Kumar, Santosh, Niteshkumar Agrawal, Chinmoy Saha, and Rajan Jha. "Graphene Oxide Coated Gold Nanoparticles-Based Fiber-Optic LSPR Sensor." In Optical Fiber-based Plasmonic Biosensors, 131–65. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003243199-6.

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7

Kumar, Santosh, Niteshkumar Agrawal, Chinmoy Saha, and Rajan Jha. "Fiber-Optic LSPR Sensor Using Graphene Oxide Coated Silver Nanostructures." In Optical Fiber-based Plasmonic Biosensors, 167–95. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003243199-7.

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8

He, Xin, Paul Beckett, and Ranjith R. Unnithan. "A Single Sensor Based Multispectral Imaging Camera." In Progress in Optical Science and Photonics, 65–85. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-7515-7_5.

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9

Falaswal, Manoj Kumar, Nitesh Mudgal, and Ghanshyam Singh. "Nanorod Dimer-Based Optical Fiber Plasmonic Sensor." In Lecture Notes in Electrical Engineering, 325–32. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2926-9_36.

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10

Hollinger, A. B., P. J. Thomas, R. H. Wiens, and E. H. Richardson. "AOTF-Based Forest Fire Sensor: Optical Design." In Applications of Photonic Technology, 201–6. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4757-9247-8_39.

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Тези доповідей конференцій з теми "Optical based sensor"

1

Jang, Hansol, Sang Min Park, Soon-Woo Cho, and Chang-Seok Kim. "High phase sensitivity interferometer sensor based on external cavity laser." In Optical Sensors. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/sensors.2022.sw4e.2.

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In this research, we have proposed novel interferometer sensor technology based on external cavity laser. Unlike conventional interferometer sensors, phase sensitivity can be amplified by increasing the initial optical path length difference of the interferometer.
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2

Sanchez-Gonzalez, A., A. Rodriguez-Rodriguez, R. Dauliat, R. Jamier, P. Roy, R. A. Perez-Herrera, and M. Lopez-Amo. "Micro-displacement Sensor based on Hollow Core Fiber Interferometers." In Optical Fiber Sensors. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/ofs.2022.th4.10.

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Анотація:
An interferometric sensor based on hollow core fibers for the measurement of micro-displacement has been designed. Its characterization has resulted in a linear response, suggesting its application in pressure sensors.
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3

Bradley, Lee W., Yusuf S. Yaras, and F. Levent Degertekin. "Acousto-Optic Electric Field Sensor Based on Thick-Film Piezoelectric Transducer Coated Fiber Bragg Grating." In Optical Fiber Sensors. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/ofs.2022.f1.2.

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An acousto-optic electric field sensor based on piezoelectric thick-film coated FBG is developed for magnetic resonance imaging. The sensor operates in the 20-150MHz range, addressing challenges of electro-optical field sensors at low RF frequencies.
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4

Lee, Sang-Shin, and Sang-Yung Shin. "Integrated Optical High-Voltage Sensor Based On a Polymeric Digital Optical Switch." In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1996. http://dx.doi.org/10.1364/cleo_europe.1996.cmd2.

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The integrated optical high-voltage sensors are useful for remote fiber-optic monitoring of high voltages under the dangerous high-voltage environments including poner distribution systems, without electromagnetic interference. They have been mainly implemented utilizing lithium niobate guided-wave diveces such as Mach-Zehnder interferometric modulators, cutoff modulators [1]. However, the modulator type voltage sensors with a single output port are inevitably affected by the changes in the light source power. In this paper, we report a high-voltage sensor utixzing a polymeric Y-branch digital optical switch [2] in an electro-optic polymer. The measurement of ac high voltages is accomplished by using the linear transfer characteristics of the digital optical switch. The logarithmic ratio of optical powers of two output ports may be also used to remove the noise caused by the power fluctuations of a light source, since the logarithmic ratio is independent of the light source power and linearly proportional to applied voltages around the operating bias point. The passive polymeric high-voltage sensor requires no electrical dc biases and no voltage dividers. It is also wavelength insensitive and fabrication-tolerant since it uses the mode evolution effect instead of interference Moreover, the sensing voltage range can be easily extended by controlling the process parameters of polymeric waveguides such as poling voltage, photobleaching time, and polymer layers thickness.
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5

Romero, Alberto Alonso, Koffi Amouzou, Andréane Richard-Denis, Jean-Marc Mac-Thiong, Yvan Petit, Jean-Marc Lina, and Bora Ung. "Development of a Wearable Optoelectronic Pressure Sensor Based on the Bending Loss of Plastic Optical Fiber and Polydimethylsiloxane." In Optical Sensors. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/sensors.2022.stu4c.3.

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We designed and demonstrated a PDMS-based flexible pressure sensor based on plastic optical fibers for measuring pressures up to 3820 mmHg with good repeatability. Its potential applications include wearable sensors for prevention of pressure injuries.
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6

Diez, J., M. Luber, H. Poisel, and O. Ziemann. "Stretching Sensor based on Polymer Optical Fibers." In Optical Sensors. Washington, D.C.: OSA, 2010. http://dx.doi.org/10.1364/sensors.2010.sthd1.

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7

Wang, Pengfei, Lin Bo, Yuliya Semenova, Qiang Wu, Gerald Farrell, and Gilberto Brambilla. "A multimode fiber tip based temperature sensor." In Optical Sensors. Washington, D.C.: OSA, 2013. http://dx.doi.org/10.1364/sensors.2013.sm2d.4.

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8

Koch, Alexander, Min Lu, Shengjia Wang, Laura Aulbach, and Martin Jakobi. "Optical Rotation Sensor based on Speckle Interferometry." In Optical Sensors. Washington, D.C.: OSA, 2017. http://dx.doi.org/10.1364/sensors.2017.sem3e.4.

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9

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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10

Antonio-Lopez, E., G. Salceda-Delgado, A. Van Newkirk, A. Schülzgen, and R. Amezcua-Correa. "Multiplexed High Temperature Sensor Based on Multicore Fiber." In Optical Sensors. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/sensors.2014.sew4c.2.

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Звіти організацій з теми "Optical based sensor"

1

Polsky, Ronen, Leah Appelhans, David R. Wheeler, Katherine Leigh Jungjohann, Dulce C. Hayes, DeAnna Marie Campbell, Angela Rudolph, et al. Optical Polarization Based Genomic Sensor. Office of Scientific and Technical Information (OSTI), October 2015. http://dx.doi.org/10.2172/1494351.

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2

Kisholoy Goswami. Long-Term, Autonomous Measurement of Atmospheric Carbon Dioxide Using an Ormosil Nanocomposite-Based Optical Sensor. Office of Scientific and Technical Information (OSTI), October 2005. http://dx.doi.org/10.2172/875422.

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3

Bruce, W. A., D. J. Romer, D. M. Barborak, and D. Yapp. PR-185-9316-R01 Development of a Laser-Based System for Mapping External Corrosion Damage on Pipeline. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), May 1995. http://dx.doi.org/10.55274/r0011926.

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Describes a simple laser-based system that can be used in the field to accurately and efficiently measure corrosion damage on the external surface of an exposed pipeline. The system that was developed uses a laser-based range sensor that projects a stripe of laser light on the pipe surface then uses optical triangulation to construct three-dimensional contour maps of corroded areas. Software that incorporates the RSTRENG method was developed for use in assessing corroded areas in these contour maps.
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4

Nabeel Riza. Ultra-High Temperature Sensors Based on Optical Property. Office of Scientific and Technical Information (OSTI), September 2008. http://dx.doi.org/10.2172/949764.

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5

Ratmanski, Kiril, and Sergey Vecherin. Resilience in distributed sensor networks. Engineer Research and Development Center (U.S.), October 2022. http://dx.doi.org/10.21079/11681/45680.

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With the advent of cheap and available sensors, there is a need for intelligent sensor selection and placement for various purposes. While previous research was focused on the most efficient sensor networks, we present a new mathematical framework for efficient and resilient sensor network installation. Specifically, in this work we formulate and solve a sensor selection and placement problem when network resilience is also a factor in the optimization problem. Our approach is based on the binary linear programming problem. The generic formulation is probabilistic and applicable to any sensor types, line-of-site and non-line-of-site, and any sensor modality. It also incorporates several realistic constraints including finite sensor supply, cost, energy consumption, as well as specified redundancy in coverage areas that require resilience. While the exact solution is computationally prohibitive, we present a fast algorithm that produces a near-optimal solution that can be used in practice. We show how such formulation works on 2D examples, applied to infrared (IR) sensor networks designed to detect and track human presence and movements in a specified coverage area. Analysis of coverage and comparison of sensor placement with and without resilience considerations is also performed.
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6

Menking, Darrel E., Jonathan M. Heitz, Roy G. Thompson, and Deborah G. Thompson. Antibody-Based Fiber Optic Evanescent Wave Sensor. Fort Belvoir, VA: Defense Technical Information Center, September 1995. http://dx.doi.org/10.21236/ada299937.

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7

Olsen. PR-179-07200-R01 Evaluation of NOx Sensors for Control of Aftertreatment Devices. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), June 2008. http://dx.doi.org/10.55274/r0010985.

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Emissions reduction through exhaust aftertreatment is becoming more common. It is likely to play an important role in meeting new emissions regulations in the future. Currently, the predominate aftertreatment technology for NOX reduction in lean burn natural gas engines appears to be selective catalytic reduction (SCR). In SCR, a reducing agent is injected into the exhaust upstream of a catalyst. Supplying the optimal quantity of reagent is critical to effective application of SCR. If too little reagent is supplied then the NOx reduction efficiency may be too low. If too much reagent is provided then the ammonia slip may be too high. Control of reagent injection is an area where improvements could be made. In many current SCR systems, the rate of reagent injection is determined by engine loading. The relationship between engine loading and engine out NOX emission is determined during SCR system commissioning, and assumed to remain constant. Ideally, NOX emissions would be measured and used as feedback to the SCR system. It may also be advantageous to employ transient reagent injection based on time dependent variations in NOX mass flow in the exhaust. This would be possible with a fast response NOx sensor. Close loop engine control is an area of increasing importance. As regulatory emissions levels are reduced, compliance margins generally decrease. Precise control of air/fuel ratio and ignition timing become more critical. Cylinder-to-cylinder control of air/fuel ratio, ignition timing, and IMEP are also important. Advanced sensors are an enabling technology for more precise engine control. Ion sensing is an example of a technology that potentially can improve cylinder balancing and ignition timing. Cylinder-to-cylinder air/fuel ratio can be accomplished in several different ways. One approach would be to install individual sensors in the exhaust manifold, one for each cylinder. Ceramic based sensors (O2 and NOx) may be reliable enough at exhaust port temperatures. They are typically used in the exhaust of 4-stroke cycle engines, which have higher exhaust temperatures than 2-stroke cycle engines. Ceramic based NOx sensors have been under development for use, primarily, in Lean NOx Traps (LNTs). This technology is expected to be used on over-the-road Diesel truck engines in 2010. Therefore, the research effort has momentum. This provides an opportunity to capitalize on the efforts of another industry. In this project a NOx sensor will be evaluated using the SCR slipstream system on the GMV-4TF. The basic tasks are: 1. Identify commercial NOx sensors and procure most promising sensor 2. Design and modification of SCR slipstream system to accept sensors 3. Installation of sensors, sensor electronics, and data logging hardware and software 4. Sensor evaluation during SCR slipstream testing.
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8

Vecherin, Sergey N., D. K. Wilson, and Chris L. Pettit. Optimal Sensor Placement with Terrain-Based Constraints and Signal Propagation Effects. Fort Belvoir, VA: Defense Technical Information Center, December 2008. http://dx.doi.org/10.21236/ada494571.

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9

Tromberg, B. J. Development of antibody-based fiber optic sensors. Office of Scientific and Technical Information (OSTI), March 1988. http://dx.doi.org/10.2172/6279061.

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10

Kwiat, Paul, Eric Chitambar, Andrew Conrad, and Samantha Isaac. Autonomous Vehicle-Based Quantum Communication Network. Illinois Center for Transportation, September 2022. http://dx.doi.org/10.36501/0197-9191/22-020.

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Quantum communication was demonstrated using autonomous vehicle-to-vehicle (V2V), as well as autonomous vehicle-to-infrastructure (V2I). Supporting critical subsystems including compact size, weight, and power (SWaP) quantum sources; optical systems; and pointing, acquisition, and tracking (PAT) subsystems were designed, developed, and tested. Novel quantum algorithms were created and analyzed, including quantum position verification (QPV) for mobile autonomous vehicles. The results of this research effort can be leveraged in support of future cross-platform, mobile quantum communication networks that provide improved security, more accurate autonomous sensors, and connected quantum computing nodes for next-generation, smart-infrastructure systems.
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