Pub Date : 2019-10-01DOI: 10.1109/SENSORS43011.2019.8956814
Yuki Sakakihara, Kazuki Watatani, K. Terao, F. Shimokawa, H. Takao
In this paper, we report the effect of parylene-C coating on a high resolution 2-axis MEMS tactile sensor for protection of the contact surface of measured samples. Thin parylene-C layer was coated on overall device chip surface, and the improvement effect was evaluated to use it as a coating material suitable for protection of the measurement surface. The effect of parylene-C layer coating to mechanical characteristic of the tactile sensor was within 5%, even though 3μm-thick parylene-C is deposited on the suspension springs. Protection effect of the parylene-C layer was also evaluated with measured samples of color paint on a metal. As a result, the depth of scratches made by sensor sweeping motion was much reduced by 60%, and the sensitivity and the spatial resolution was almost not affected. Parylene-C is an effective material for coating of high resolution tactile sensor surface.
{"title":"Parylene-C Coating on High Resolution MEMS Tactile Sensor for Protection of Measurement Surface","authors":"Yuki Sakakihara, Kazuki Watatani, K. Terao, F. Shimokawa, H. Takao","doi":"10.1109/SENSORS43011.2019.8956814","DOIUrl":"https://doi.org/10.1109/SENSORS43011.2019.8956814","url":null,"abstract":"In this paper, we report the effect of parylene-C coating on a high resolution 2-axis MEMS tactile sensor for protection of the contact surface of measured samples. Thin parylene-C layer was coated on overall device chip surface, and the improvement effect was evaluated to use it as a coating material suitable for protection of the measurement surface. The effect of parylene-C layer coating to mechanical characteristic of the tactile sensor was within 5%, even though 3μm-thick parylene-C is deposited on the suspension springs. Protection effect of the parylene-C layer was also evaluated with measured samples of color paint on a metal. As a result, the depth of scratches made by sensor sweeping motion was much reduced by 60%, and the sensitivity and the spatial resolution was almost not affected. Parylene-C is an effective material for coating of high resolution tactile sensor surface.","PeriodicalId":6710,"journal":{"name":"2019 IEEE SENSORS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81102075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/SENSORS43011.2019.8956802
C. Ghouila-Houri, A. Talbi, R. Viard, Q. Gallas, E. Garnier, P. Molton, J. Delva, A. Merlen, P. Pernod
This paper presents and discusses the results obtained with a MEMS high temperature gradient sensor for time-averaged and fluctuating skin-friction measurements in highly turbulent flows. Designed as a robust wall-mounted suspended hot-wire structure, the micro-sensor showed a high temperature variation for low power consumption. Successfully implemented into two air wind tunnels, the sensor was tested for velocities going up to 270 m/s, mean velocity of airliner cruise flights, and corresponding to a shear stress of 150 Pa. The microsensor thereby demonstrated its value for measuring turbulence in aerodynamic applications, particularly in aeronautics.
{"title":"MEMS high temperature gradient sensor for skin-friction measurements in highly turbulent flows","authors":"C. Ghouila-Houri, A. Talbi, R. Viard, Q. Gallas, E. Garnier, P. Molton, J. Delva, A. Merlen, P. Pernod","doi":"10.1109/SENSORS43011.2019.8956802","DOIUrl":"https://doi.org/10.1109/SENSORS43011.2019.8956802","url":null,"abstract":"This paper presents and discusses the results obtained with a MEMS high temperature gradient sensor for time-averaged and fluctuating skin-friction measurements in highly turbulent flows. Designed as a robust wall-mounted suspended hot-wire structure, the micro-sensor showed a high temperature variation for low power consumption. Successfully implemented into two air wind tunnels, the sensor was tested for velocities going up to 270 m/s, mean velocity of airliner cruise flights, and corresponding to a shear stress of 150 Pa. The microsensor thereby demonstrated its value for measuring turbulence in aerodynamic applications, particularly in aeronautics.","PeriodicalId":6710,"journal":{"name":"2019 IEEE SENSORS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81151774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/SENSORS43011.2019.8956713
Doaa Ahmed, H. Unterweger, G. Fischer, R. Schober, J. Kirchner
Molecular communication (MC), using chemicals or particles, is a promising approach to bridge the gaps of conventional communication systems, e.g. in nano-scale or in pipelines. Our testbed depends on superparamagnetic iron oxide nanoparticles (SPIONs) as information carriers, which are detected using a susceptometer. In this paper, we study how the position and distribution of particles near the susceptometer, i.e., coil, affect its detected signal. When the particles move axially through the coil, an increment in the signal is detected. In addition, we observed a nonlinear additive behaviour of inductance in the same axial direction, i.e., changes in inductance due to partial volumes are not additive. An exponentially-like signal is detected when the particles move radially through the coil. Moreover, a linear additive behaviour of inductance is observed in this direction. Increasing the magnetic susceptibility has a significant effect on the detected signal. However, the susceptibility of SPIONs is relatively small in order to keep superparamagnetic properties. The coil inductance depends not only on the volume, or permeability of magnetic particles in its core, but also on how they are distributed inside.
{"title":"Characterization of an Inductance-based Detector in Molecular Communication Testbed Based on Superparamagnetic Iron Oxide Nanoparticles","authors":"Doaa Ahmed, H. Unterweger, G. Fischer, R. Schober, J. Kirchner","doi":"10.1109/SENSORS43011.2019.8956713","DOIUrl":"https://doi.org/10.1109/SENSORS43011.2019.8956713","url":null,"abstract":"Molecular communication (MC), using chemicals or particles, is a promising approach to bridge the gaps of conventional communication systems, e.g. in nano-scale or in pipelines. Our testbed depends on superparamagnetic iron oxide nanoparticles (SPIONs) as information carriers, which are detected using a susceptometer. In this paper, we study how the position and distribution of particles near the susceptometer, i.e., coil, affect its detected signal. When the particles move axially through the coil, an increment in the signal is detected. In addition, we observed a nonlinear additive behaviour of inductance in the same axial direction, i.e., changes in inductance due to partial volumes are not additive. An exponentially-like signal is detected when the particles move radially through the coil. Moreover, a linear additive behaviour of inductance is observed in this direction. Increasing the magnetic susceptibility has a significant effect on the detected signal. However, the susceptibility of SPIONs is relatively small in order to keep superparamagnetic properties. The coil inductance depends not only on the volume, or permeability of magnetic particles in its core, but also on how they are distributed inside.","PeriodicalId":6710,"journal":{"name":"2019 IEEE SENSORS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73596534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/SENSORS43011.2019.8956759
Arpith Vedhanayagam, A. Basu
Flow cytometers are widely used to rapidly measure characteristics of single cells. Typical laser-based instruments provide throughputs of >10,000 events/s; however, the number of measured features is typically small and apply to the entire cell volume. Imaging flow cytometers (IFC) rely instead on 2D images of the objects, providing hundreds to millions of spatially resolved features. However, the throughput of IFCs is typically lower (several thousand events/s) due to the computational overhead of 2D image processing. Here, we demonstrate a GPU-accelerated computer vision analyzer which substantially increases computational throughput. When coupled to a 300 frame per second (fps) real-time camera, the system is limited by the camera and analyzes 1260 particles/s in a 500x700 pixel video with 4-5 particles/frame. When reading from a solid state disk, the throughput increases to 4500 fps with ~3 particles per frame, resulting in a throughput of 13,500 particles/s. The reported throughput is 2.5-4X higher than existing technologies, paving the way for ultra-high throughput IFC.
{"title":"Imaging Flow Cytometry at >13K events/s Using GPU-Accelerated Computer Vision","authors":"Arpith Vedhanayagam, A. Basu","doi":"10.1109/SENSORS43011.2019.8956759","DOIUrl":"https://doi.org/10.1109/SENSORS43011.2019.8956759","url":null,"abstract":"Flow cytometers are widely used to rapidly measure characteristics of single cells. Typical laser-based instruments provide throughputs of >10,000 events/s; however, the number of measured features is typically small and apply to the entire cell volume. Imaging flow cytometers (IFC) rely instead on 2D images of the objects, providing hundreds to millions of spatially resolved features. However, the throughput of IFCs is typically lower (several thousand events/s) due to the computational overhead of 2D image processing. Here, we demonstrate a GPU-accelerated computer vision analyzer which substantially increases computational throughput. When coupled to a 300 frame per second (fps) real-time camera, the system is limited by the camera and analyzes 1260 particles/s in a 500x700 pixel video with 4-5 particles/frame. When reading from a solid state disk, the throughput increases to 4500 fps with ~3 particles per frame, resulting in a throughput of 13,500 particles/s. The reported throughput is 2.5-4X higher than existing technologies, paving the way for ultra-high throughput IFC.","PeriodicalId":6710,"journal":{"name":"2019 IEEE SENSORS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85500908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/SENSORS43011.2019.8956804
Yang Li, J. Tong, C. Bian, Hanpeng Dong, Jizhou Sun, S. Xia
This paper demonstrates a portable electrochemical sensor system for the detection of copper ions (Cu2+) in water samples. The hardware of the sensor is based on a customized electrochemical electrode and a miniaturized detecting circuit module. An application (APP) running on an Android PAD is developed to functionalize the hardware into a sensor system. The electrochemical electrode is configured with a gold disk working-electrode (WE), a platinum disk counter-electrode (CE) and a commercial Ag/AgCl reference electrode (RE). The detecting circuit module use an ARM chip to realize the key operations, such as precise control of multichannel potentiostat and weak current detection, in electrochemical detection based on anodic stripping voltammetric method. The APP is used to manage the Bluetooth wireless communication between the sensor and the Android PAD, and implement data management and graphic display of the detecting results. The developed sensor system was verified with standard copper salt samples. The testing result shows that it performes high sensitivity (0.0075 μA/μgL−1) to Cu2+ within the concentrations ranging from 0 μg/L to 400 μg/L by the square wave voltammetry (SWV). The standard substance tests also exhibit a good precision of the sensor system for simultaneous determination of Cu2+ and Pd2+, which indicates it can also be used to implement multi-parameters detection in water quality monitoring.
{"title":"A Portable Sensor System for Determination of Copper Ions in Waters with Android Device","authors":"Yang Li, J. Tong, C. Bian, Hanpeng Dong, Jizhou Sun, S. Xia","doi":"10.1109/SENSORS43011.2019.8956804","DOIUrl":"https://doi.org/10.1109/SENSORS43011.2019.8956804","url":null,"abstract":"This paper demonstrates a portable electrochemical sensor system for the detection of copper ions (Cu2+) in water samples. The hardware of the sensor is based on a customized electrochemical electrode and a miniaturized detecting circuit module. An application (APP) running on an Android PAD is developed to functionalize the hardware into a sensor system. The electrochemical electrode is configured with a gold disk working-electrode (WE), a platinum disk counter-electrode (CE) and a commercial Ag/AgCl reference electrode (RE). The detecting circuit module use an ARM chip to realize the key operations, such as precise control of multichannel potentiostat and weak current detection, in electrochemical detection based on anodic stripping voltammetric method. The APP is used to manage the Bluetooth wireless communication between the sensor and the Android PAD, and implement data management and graphic display of the detecting results. The developed sensor system was verified with standard copper salt samples. The testing result shows that it performes high sensitivity (0.0075 μA/μgL−1) to Cu2+ within the concentrations ranging from 0 μg/L to 400 μg/L by the square wave voltammetry (SWV). The standard substance tests also exhibit a good precision of the sensor system for simultaneous determination of Cu2+ and Pd2+, which indicates it can also be used to implement multi-parameters detection in water quality monitoring.","PeriodicalId":6710,"journal":{"name":"2019 IEEE SENSORS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85824657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/SENSORS43011.2019.8956770
Hemin Zhang, Jiangkun Sun, Dongyang Chen, Milind S. Pandit, G. Sobreviela, A. Seshia
Amplitude stability is critical for mode-localized sensors with the output metric of such sensors being defined as an amplitude ratio. A systematic study of the drive dependence of the amplitude ratio metric has not been conducted previously. In this paper, we first report that the amplitude stability of the weakly coupled resonators can be improved using a dual-resonator drive method compared to a single-resonator drive method. Experimental validation on a weakly coupled MEMS resonator demonstrates that the normalized amplitude stability can be improved by a mean factor of ~2.9 using the dual-resonator drive method compared to the single-resonator drive method, without any degradation in the frequency stability.
{"title":"Drive Dependence of Output Amplitude Stabilities in Weakly Coupled MEMS Resonators","authors":"Hemin Zhang, Jiangkun Sun, Dongyang Chen, Milind S. Pandit, G. Sobreviela, A. Seshia","doi":"10.1109/SENSORS43011.2019.8956770","DOIUrl":"https://doi.org/10.1109/SENSORS43011.2019.8956770","url":null,"abstract":"Amplitude stability is critical for mode-localized sensors with the output metric of such sensors being defined as an amplitude ratio. A systematic study of the drive dependence of the amplitude ratio metric has not been conducted previously. In this paper, we first report that the amplitude stability of the weakly coupled resonators can be improved using a dual-resonator drive method compared to a single-resonator drive method. Experimental validation on a weakly coupled MEMS resonator demonstrates that the normalized amplitude stability can be improved by a mean factor of ~2.9 using the dual-resonator drive method compared to the single-resonator drive method, without any degradation in the frequency stability.","PeriodicalId":6710,"journal":{"name":"2019 IEEE SENSORS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84068752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/SENSORS43011.2019.8956636
Tanner Songkakul, Pulak Bhushan, Yogeswaran Umasankar, Murat A. Yokus, M. Daniele, S. Bhansali, A. Bozkurt
Patients suffering from chronic non-healing wounds must deal with long-term physical pain, emotional distress, and financial burden. Monitoring of wound-exudate from chronic wounds could improve the efficacy of patient care, leading to improved treatment outcomes. We present a flexible bandage sized multi-site wound monitoring system with an on-board wireless embedded system consisting of four potentiostat analog front ends and a temperature sensor. This embedded system interfaces with four flexible electrochemical sensors screen-printed onto wound dressings for uric acid sensing; a biomarker for monitoring wound healing. This system measures uric acid levels at multiple sites of a single wound, allowing for spatial resolution when evaluating healing of large wounds. This work demonstrates the ability of this system to measure uric acid in-vitro. The system transmits potentiostat data to a remote data aggregator such as a tablet or smartphone, and can operate for up to 10 days powered by the on-board 350 mAh lithium polymer battery.
{"title":"Towards a Long-Term Multi-Site Electrochemical Wound Monitoring System","authors":"Tanner Songkakul, Pulak Bhushan, Yogeswaran Umasankar, Murat A. Yokus, M. Daniele, S. Bhansali, A. Bozkurt","doi":"10.1109/SENSORS43011.2019.8956636","DOIUrl":"https://doi.org/10.1109/SENSORS43011.2019.8956636","url":null,"abstract":"Patients suffering from chronic non-healing wounds must deal with long-term physical pain, emotional distress, and financial burden. Monitoring of wound-exudate from chronic wounds could improve the efficacy of patient care, leading to improved treatment outcomes. We present a flexible bandage sized multi-site wound monitoring system with an on-board wireless embedded system consisting of four potentiostat analog front ends and a temperature sensor. This embedded system interfaces with four flexible electrochemical sensors screen-printed onto wound dressings for uric acid sensing; a biomarker for monitoring wound healing. This system measures uric acid levels at multiple sites of a single wound, allowing for spatial resolution when evaluating healing of large wounds. This work demonstrates the ability of this system to measure uric acid in-vitro. The system transmits potentiostat data to a remote data aggregator such as a tablet or smartphone, and can operate for up to 10 days powered by the on-board 350 mAh lithium polymer battery.","PeriodicalId":6710,"journal":{"name":"2019 IEEE SENSORS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77851439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/SENSORS43011.2019.8956893
A. Mazzamurro, A. Talbi, Y. Dusch, C. Ghouila-Houri, P. Pernod, O. Matar, N. Tiercelin
This paper shows the use of time domain reflec-tometry (TDR) applied to Surface Acoustic Waves (SAW) based magnetic field sensors to improve sensitivity of these devices. The basic operating principle of such sensors is the use of a magnetostrictive material along the SAW path to induce a velocity shift when biased with a magnetic field. This velocity shift is related to the interaction of the SAW with the magnetostrictive material through DE-effect. By looking at the multiple echoes occurring after the main acoustic signal (direct transit) in a delay line configuration, it is possible to extend the interaction path, resulting in an increase of the phase shift as the acoustic wave is travelling back and forth through the magnetostrictive material. The velocity shift shape obtained under a bias magnetic field is well explained using an equivalent piezomagnetic model developed in a previous work to assess elastic stiffness constant dependency of the magnetostrictive thin film with the magnetic field. It is shown that it can improve the sensitivity of the magnetic sensor by one order of magnitude.
{"title":"Time domain reflectometry for improved Surface Acoustic Wave magnetic field sensor sensitivity","authors":"A. Mazzamurro, A. Talbi, Y. Dusch, C. Ghouila-Houri, P. Pernod, O. Matar, N. Tiercelin","doi":"10.1109/SENSORS43011.2019.8956893","DOIUrl":"https://doi.org/10.1109/SENSORS43011.2019.8956893","url":null,"abstract":"This paper shows the use of time domain reflec-tometry (TDR) applied to Surface Acoustic Waves (SAW) based magnetic field sensors to improve sensitivity of these devices. The basic operating principle of such sensors is the use of a magnetostrictive material along the SAW path to induce a velocity shift when biased with a magnetic field. This velocity shift is related to the interaction of the SAW with the magnetostrictive material through DE-effect. By looking at the multiple echoes occurring after the main acoustic signal (direct transit) in a delay line configuration, it is possible to extend the interaction path, resulting in an increase of the phase shift as the acoustic wave is travelling back and forth through the magnetostrictive material. The velocity shift shape obtained under a bias magnetic field is well explained using an equivalent piezomagnetic model developed in a previous work to assess elastic stiffness constant dependency of the magnetostrictive thin film with the magnetic field. It is shown that it can improve the sensitivity of the magnetic sensor by one order of magnitude.","PeriodicalId":6710,"journal":{"name":"2019 IEEE SENSORS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79993258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/SENSORS43011.2019.8956616
Srishti Garg, R. Yuan, A. Gopalsamy, Frederic A. Fellouse, S. Sidhu, J. Dou, J. Aitchison
There is a growing need for diagnostic technologies which can provide accurate disease detection using sensitive, reliable, and inexpensive methods. A lot of research has been directed towards developing efficient point-of-care devices that enable the parallel detection of multiple analytes, in small-volume samples, with high sensitivity and in a short time. Flow cytometry, used for bead-based immunoassays are expensive and bulky. Using a microfluidic based optical detection system makes the whole process convenient and cheap. This motivates us to explore this platform for multiplexed testing by incorporating microbead-based assays. Hence, we aim to develop a microfluidics based optical detection system, which can measure multiple analytes at the same time for diseases like dengue. Dengue detection using NS1-4 (non-structural protein), which inflates on the first day of virus with the IgG antibody, can give significant information for the treatment. Simultaneous detection of dengue antigen and antibody is crucial for prevention and diagnosis of dengue infection. The outcome of this study generates the first-generation prototype of a universal fluorescence detection device capable of both classifying the microspheres and measuring the amount of specific biomarker.
{"title":"A Multiplexed, Point-of-Care Sensing for Dengue","authors":"Srishti Garg, R. Yuan, A. Gopalsamy, Frederic A. Fellouse, S. Sidhu, J. Dou, J. Aitchison","doi":"10.1109/SENSORS43011.2019.8956616","DOIUrl":"https://doi.org/10.1109/SENSORS43011.2019.8956616","url":null,"abstract":"There is a growing need for diagnostic technologies which can provide accurate disease detection using sensitive, reliable, and inexpensive methods. A lot of research has been directed towards developing efficient point-of-care devices that enable the parallel detection of multiple analytes, in small-volume samples, with high sensitivity and in a short time. Flow cytometry, used for bead-based immunoassays are expensive and bulky. Using a microfluidic based optical detection system makes the whole process convenient and cheap. This motivates us to explore this platform for multiplexed testing by incorporating microbead-based assays. Hence, we aim to develop a microfluidics based optical detection system, which can measure multiple analytes at the same time for diseases like dengue. Dengue detection using NS1-4 (non-structural protein), which inflates on the first day of virus with the IgG antibody, can give significant information for the treatment. Simultaneous detection of dengue antigen and antibody is crucial for prevention and diagnosis of dengue infection. The outcome of this study generates the first-generation prototype of a universal fluorescence detection device capable of both classifying the microspheres and measuring the amount of specific biomarker.","PeriodicalId":6710,"journal":{"name":"2019 IEEE SENSORS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80361576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/SENSORS43011.2019.8956892
Felix Wermke, B. Meffert
The last decade bore witness to increased development of time-of-flight (ToF) camera hardware, algorithms, and applications, particularly 3-D measurement in the fields of human-robot collaboration. Their advantage is in faster digital 3-D image target representation from efficient signal computations. ToF cameras emit modulated light, measuring the round-trip time from its illumination source to its sensor, deriving a distance image. A disadvantage of using multiple ToF cameras is light interference with other cameras’ 3-D measurements. Commonly, adopting an access protocol called frequency division multiple access (FDMA) minimizes interference-related errors but does not eliminate them. The quantification of this distance error has remained a challenging research problem. This paper presents an interference model for two time-of-flight cameras, quantitative analysis, and mathematical modeling to determine the interference-related distance error when using FDMA.
{"title":"Interference Model of Two Time-Of-Flight Cameras","authors":"Felix Wermke, B. Meffert","doi":"10.1109/SENSORS43011.2019.8956892","DOIUrl":"https://doi.org/10.1109/SENSORS43011.2019.8956892","url":null,"abstract":"The last decade bore witness to increased development of time-of-flight (ToF) camera hardware, algorithms, and applications, particularly 3-D measurement in the fields of human-robot collaboration. Their advantage is in faster digital 3-D image target representation from efficient signal computations. ToF cameras emit modulated light, measuring the round-trip time from its illumination source to its sensor, deriving a distance image. A disadvantage of using multiple ToF cameras is light interference with other cameras’ 3-D measurements. Commonly, adopting an access protocol called frequency division multiple access (FDMA) minimizes interference-related errors but does not eliminate them. The quantification of this distance error has remained a challenging research problem. This paper presents an interference model for two time-of-flight cameras, quantitative analysis, and mathematical modeling to determine the interference-related distance error when using FDMA.","PeriodicalId":6710,"journal":{"name":"2019 IEEE SENSORS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82053645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：