Pub Date : 2022-07-10DOI: 10.1109/fleps53764.2022.9781544
N. Panunzio, Arianna Diamanti, G. Marrocco
A change in body temperature can be a symptom of an unhealthy status, or can reflect physical activity and medicine intake. Temperature measurements over the skin are practical and non-invasive, but a reliable evaluation of core temperature requires invasive measurements in natural body cavities. Dual-heat-flux thermometry offers an indirect method to estimate deep body temperature from the surface of the skin with four sampling points on the same device, that however is currently wired, bulky and rigid. Therefore, its comfort and applicability are limited. Ultra High Frequency (UHF) Radio Frequency IDentification (RFID) devices, instead, can enable non-invasive wireless monitoring of temperature over the skin by means of epidermal antennas with embedded temperature sensors. By combining RFID technology with dual-heat-flux method, this paper presents a preliminary design of a dual-heat-flux epidermal RFID thermometer. It is flexible and more compact, and can be read wirelessly by an hand-held reader.
{"title":"Flexible Multi-Layer Sensor for the Wireless Implementation of Dual-Heat-Flux Monitoring of Body Temperature","authors":"N. Panunzio, Arianna Diamanti, G. Marrocco","doi":"10.1109/fleps53764.2022.9781544","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781544","url":null,"abstract":"A change in body temperature can be a symptom of an unhealthy status, or can reflect physical activity and medicine intake. Temperature measurements over the skin are practical and non-invasive, but a reliable evaluation of core temperature requires invasive measurements in natural body cavities. Dual-heat-flux thermometry offers an indirect method to estimate deep body temperature from the surface of the skin with four sampling points on the same device, that however is currently wired, bulky and rigid. Therefore, its comfort and applicability are limited. Ultra High Frequency (UHF) Radio Frequency IDentification (RFID) devices, instead, can enable non-invasive wireless monitoring of temperature over the skin by means of epidermal antennas with embedded temperature sensors. By combining RFID technology with dual-heat-flux method, this paper presents a preliminary design of a dual-heat-flux epidermal RFID thermometer. It is flexible and more compact, and can be read wirelessly by an hand-held reader.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"195 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114748940","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 : 2022-07-10DOI: 10.1109/fleps53764.2022.9781566
Shashank Mishra, M. S. Baghini, D. Shakthivel, B. Rai, R. Dahiya
Pressure sensors make an important component of electronic skin and its application in robotics, human-machine interfaces, and health monitoring. In this regard, soft capacitive sensors based on elastomeric dielectric materials and piezoelectric nanowires (NWs) have been shown to have good sensitivity, particularly in the low-pressure range of 0-10 kPa. In this work, we have simulated the capacitive sensors using finite element methods (FEM) to investigate the effect of piezoelectric properties of ZnO NWs incorporated into a polydimethylsiloxane (PDMS) dielectric material. Effect of NWs orientation and their dimensions on the sensitivity of the sensor have been studied. Simulations shows that with ZnO NWs in the PDMS matrix the sensors show higher sensitivity in low pressure range (0-10 kPa) than the bare PDMS based sensors. The estimated values and trends observed in this study were found to have good match with experimental results. Further, the simulation results show that the NWs aspect ratio could also influence the sensitivity of capacitive pressure sensors. The presented study shows the potential for using FEM for optimization of sensor design.
{"title":"Sensitivity Analysis of ZnO NWs Based Soft Capacitive Pressure Sensors using Finite Element Modeling","authors":"Shashank Mishra, M. S. Baghini, D. Shakthivel, B. Rai, R. Dahiya","doi":"10.1109/fleps53764.2022.9781566","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781566","url":null,"abstract":"Pressure sensors make an important component of electronic skin and its application in robotics, human-machine interfaces, and health monitoring. In this regard, soft capacitive sensors based on elastomeric dielectric materials and piezoelectric nanowires (NWs) have been shown to have good sensitivity, particularly in the low-pressure range of 0-10 kPa. In this work, we have simulated the capacitive sensors using finite element methods (FEM) to investigate the effect of piezoelectric properties of ZnO NWs incorporated into a polydimethylsiloxane (PDMS) dielectric material. Effect of NWs orientation and their dimensions on the sensitivity of the sensor have been studied. Simulations shows that with ZnO NWs in the PDMS matrix the sensors show higher sensitivity in low pressure range (0-10 kPa) than the bare PDMS based sensors. The estimated values and trends observed in this study were found to have good match with experimental results. Further, the simulation results show that the NWs aspect ratio could also influence the sensitivity of capacitive pressure sensors. The presented study shows the potential for using FEM for optimization of sensor design.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"2004 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123906311","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 : 2022-07-10DOI: 10.1109/fleps53764.2022.9781485
T. Eom, Kyungkwan Kim, Minhyun Jung, Jihyun Bae, Sanghun Jeon
Wearable devices have developed significantly due to the use and development of various materials such as organic materials and carbon nanotubes, and the demand for wearables is also growing. The piezoresistive pressure sensor has been developed using conductive fabric coated with a simple solution coating process. The fabric has an open structure with the interconnected top and lower layers that can be utilized as pressure sensors and can detect physical movements. The piezoresistive pressure sensor has excellent resistance linearity in the low pressure to 10kPa range, as well as consistent resistance to strain up to 20% when stretched. The pressure sensor array can detect pressure-induced local deformation and will be expected to contribute considerably to the development of wearable devices with a simplified process.
{"title":"Wearable pressure sensor based on solution-coated fabric for pulse detection","authors":"T. Eom, Kyungkwan Kim, Minhyun Jung, Jihyun Bae, Sanghun Jeon","doi":"10.1109/fleps53764.2022.9781485","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781485","url":null,"abstract":"Wearable devices have developed significantly due to the use and development of various materials such as organic materials and carbon nanotubes, and the demand for wearables is also growing. The piezoresistive pressure sensor has been developed using conductive fabric coated with a simple solution coating process. The fabric has an open structure with the interconnected top and lower layers that can be utilized as pressure sensors and can detect physical movements. The piezoresistive pressure sensor has excellent resistance linearity in the low pressure to 10kPa range, as well as consistent resistance to strain up to 20% when stretched. The pressure sensor array can detect pressure-induced local deformation and will be expected to contribute considerably to the development of wearable devices with a simplified process.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124091783","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 : 2022-07-10DOI: 10.1109/fleps53764.2022.9781554
A. Deshpande, C. Ghosh, E. Pourshaban, M. Karkhanis, A. Banerjee, Hanseup Kim, C. Mastrangelo
One of the essential requirements of any flexible substrate electronic system is the availability of reliable, high density, fine pitch interconnects between components. In this work, we demonstrate a high-toughness two-layer (aluminum, N-doped polysilicon) composite wiring scheme. The top aluminum layer carries most of the current while the polysilicon underlayer electrically bridges any cracks present on the top aluminum induced by flexing thus maintaining electrical conductivity even at very high stresses. When composite and Al control wires on a flexible tape were subject to 4000 cycles of bending, we observed that Al control wires fracture at a 2.5 mm radius of curvature but the composite wires maintain electrical conduction with an increased resistance.
{"title":"High-Toughness Aluminum-N-Doped Polysilicon Wiring for Flexible Electronics","authors":"A. Deshpande, C. Ghosh, E. Pourshaban, M. Karkhanis, A. Banerjee, Hanseup Kim, C. Mastrangelo","doi":"10.1109/fleps53764.2022.9781554","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781554","url":null,"abstract":"One of the essential requirements of any flexible substrate electronic system is the availability of reliable, high density, fine pitch interconnects between components. In this work, we demonstrate a high-toughness two-layer (aluminum, N-doped polysilicon) composite wiring scheme. The top aluminum layer carries most of the current while the polysilicon underlayer electrically bridges any cracks present on the top aluminum induced by flexing thus maintaining electrical conductivity even at very high stresses. When composite and Al control wires on a flexible tape were subject to 4000 cycles of bending, we observed that Al control wires fracture at a 2.5 mm radius of curvature but the composite wires maintain electrical conduction with an increased resistance.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121719560","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 : 2022-07-10DOI: 10.1109/fleps53764.2022.9781594
Fengyuan Liu, M. S. Baghini, Moupali Chakraborty, Adamos Christou, R. Dahiya
The advances in robotics are often inspired by biological systems, which have attained harmonised functionality and efficiency through billions of years of evolution. Motivated by the nature, this paper presents the realisation of sensorimotor correlation using printed synaptic transistor. While such a concept has drawn increasing attention recently, no report on the adopted technology details has been published. To this end, this paper specifically presents the technical elements for the practical realisation of the concept through printed synaptic transistor and the development of the conditioning printed circuit board (PCB) for operating the as-realised device. This work presents a possible roadmap for the future advancement towards e-Skin with neural-like processing capability through a heterogeneous integration of printed circuits on flexible PCBs.
{"title":"Sensorimotor Correlation Using Printed Synaptic Transistors and Conditioning PCB","authors":"Fengyuan Liu, M. S. Baghini, Moupali Chakraborty, Adamos Christou, R. Dahiya","doi":"10.1109/fleps53764.2022.9781594","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781594","url":null,"abstract":"The advances in robotics are often inspired by biological systems, which have attained harmonised functionality and efficiency through billions of years of evolution. Motivated by the nature, this paper presents the realisation of sensorimotor correlation using printed synaptic transistor. While such a concept has drawn increasing attention recently, no report on the adopted technology details has been published. To this end, this paper specifically presents the technical elements for the practical realisation of the concept through printed synaptic transistor and the development of the conditioning printed circuit board (PCB) for operating the as-realised device. This work presents a possible roadmap for the future advancement towards e-Skin with neural-like processing capability through a heterogeneous integration of printed circuits on flexible PCBs.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121872851","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 : 2022-07-10DOI: 10.1109/fleps53764.2022.9781572
Seyedfakhreddin Nabavi, Yiwen Chen, N. Lasry, S. Bhadra
The current state of the art in organic light-emitting diodes (OLEDs) depends on the use of glass as a substrate and hence, suffer from mechanical brittleness and lack of flexibility. In this paper, a fully flexible OLED fabricated on the highly flexible substrate, namely polyethylene terephthalate (PET), using a solution-based process is proposed. In this regard, the organic materials, i.e., PEDOT:PSS and F8BT, as the hole transport layer (HTL) and emission layer (EML), respectively, are deposited by the spin-coating technique on the PET substrate coated with indium tin oxide (ITO). The experimental results show that the flexible OLED prototype has a similar emission spectrum to that of OLED fabricated on conventional ITO-coated glass. Finally, a feasible approach is recommended to further enhance the performance of the proposed flexible OLED in terms of operating voltage and ohmic losses without any impact on its flexibility.
{"title":"Fully Flexible Organic LED Fabricated by a Solution-based Process","authors":"Seyedfakhreddin Nabavi, Yiwen Chen, N. Lasry, S. Bhadra","doi":"10.1109/fleps53764.2022.9781572","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781572","url":null,"abstract":"The current state of the art in organic light-emitting diodes (OLEDs) depends on the use of glass as a substrate and hence, suffer from mechanical brittleness and lack of flexibility. In this paper, a fully flexible OLED fabricated on the highly flexible substrate, namely polyethylene terephthalate (PET), using a solution-based process is proposed. In this regard, the organic materials, i.e., PEDOT:PSS and F8BT, as the hole transport layer (HTL) and emission layer (EML), respectively, are deposited by the spin-coating technique on the PET substrate coated with indium tin oxide (ITO). The experimental results show that the flexible OLED prototype has a similar emission spectrum to that of OLED fabricated on conventional ITO-coated glass. Finally, a feasible approach is recommended to further enhance the performance of the proposed flexible OLED in terms of operating voltage and ohmic losses without any impact on its flexibility.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122084045","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 : 2022-07-10DOI: 10.1109/fleps53764.2022.9781479
N. Zarabinia, Giulia Lucarelli, R. Rasuli, F. De Rossi, B. Taheri, Hamed Javanbakht, F. Brunetti, T. Brown
Most perovskite films in laboratories are deposited by spin coating and antisolvent engineering to achieve high efficiency. Industry prefers roll-to-roll compatible techniques such as slot-die or blade coating, where the application of anti-solvent has always proven to be problematic. We show a novel method that uses a sheet of paper to deposit the perovskite films in air. Soaking the paper used as an applicator in a green anti-solvent improved the efficiency of the solar cell by 82% compared to the same when using a sheet of dry paper. Finally, an automated version of the method is proposed for future implementation.
{"title":"Method for fabricating flexible solar cell perovskite semiconductors via a sheet of paper applicator soaked in anti-solvent","authors":"N. Zarabinia, Giulia Lucarelli, R. Rasuli, F. De Rossi, B. Taheri, Hamed Javanbakht, F. Brunetti, T. Brown","doi":"10.1109/fleps53764.2022.9781479","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781479","url":null,"abstract":"Most perovskite films in laboratories are deposited by spin coating and antisolvent engineering to achieve high efficiency. Industry prefers roll-to-roll compatible techniques such as slot-die or blade coating, where the application of anti-solvent has always proven to be problematic. We show a novel method that uses a sheet of paper to deposit the perovskite films in air. Soaking the paper used as an applicator in a green anti-solvent improved the efficiency of the solar cell by 82% compared to the same when using a sheet of dry paper. Finally, an automated version of the method is proposed for future implementation.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"241 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122124702","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 : 2022-07-10DOI: 10.1109/fleps53764.2022.9781562
Hua Fan, William Le Boeuf, V. Maheshwari
Simple filtration-based fabrication of a flexible wearable device for recording electromyogram is achieved in a bi-layer structure. The outer layer with high resistance shields the inner sensing layer from interfering electrical signals. The shielding effect results in a significantly improved signal to noise ratio. The shielding ability is attributed to multiple reflections of the electromagnetic waves due to the inhomogeneous structure of the layer.
{"title":"Nanoparticle Chain based Materials for Shielding and Flexible Devices","authors":"Hua Fan, William Le Boeuf, V. Maheshwari","doi":"10.1109/fleps53764.2022.9781562","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781562","url":null,"abstract":"Simple filtration-based fabrication of a flexible wearable device for recording electromyogram is achieved in a bi-layer structure. The outer layer with high resistance shields the inner sensing layer from interfering electrical signals. The shielding effect results in a significantly improved signal to noise ratio. The shielding ability is attributed to multiple reflections of the electromagnetic waves due to the inhomogeneous structure of the layer.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116809592","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 : 2022-07-10DOI: 10.1109/fleps53764.2022.9781568
D. Shakthivel, Adamos Christou, A. Dahiya, R. Dahiya
Inorganic NWs in the sub-100 nm diameter range have shown great potential for flexible electronics. Research in this area is governed by the three distinct domains, (1) growth strategy of NWs, (2) NWs printing, (3) development of flexible devices. These three domains are interdependent and the current works aims to show the connectivity via a generalized vapor-liquid-solid (VLS) based high temperature bottom-up growth process, which serves a key role to produce high quality NWs of length ~10-50 µm. These NWs are printed over a flexible substrates using contact or direct roll transfer printing techniques, eventually leading to flexible devices. The key requirement from the growth process is to obtain long NWs needed for effective printing. Here we discuss the growth of NWs suitable for printing via atomistic kinetic model. This is followed by contact printing of vertical grown NWs over flexible substrates to develop an array of flexible ZnO NWs FETs with uniform response.
{"title":"Growth Kinetics and Integration of Inorganic Nanowires for Flexible Electronics","authors":"D. Shakthivel, Adamos Christou, A. Dahiya, R. Dahiya","doi":"10.1109/fleps53764.2022.9781568","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781568","url":null,"abstract":"Inorganic NWs in the sub-100 nm diameter range have shown great potential for flexible electronics. Research in this area is governed by the three distinct domains, (1) growth strategy of NWs, (2) NWs printing, (3) development of flexible devices. These three domains are interdependent and the current works aims to show the connectivity via a generalized vapor-liquid-solid (VLS) based high temperature bottom-up growth process, which serves a key role to produce high quality NWs of length ~10-50 µm. These NWs are printed over a flexible substrates using contact or direct roll transfer printing techniques, eventually leading to flexible devices. The key requirement from the growth process is to obtain long NWs needed for effective printing. Here we discuss the growth of NWs suitable for printing via atomistic kinetic model. This is followed by contact printing of vertical grown NWs over flexible substrates to develop an array of flexible ZnO NWs FETs with uniform response.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115290092","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 : 2022-07-10DOI: 10.1109/fleps53764.2022.9781499
Alex Whipple, Marie Bridges, A. Hanson, D. Maddipatla, M. Atashbar
A ultra-lightweight, portable sensing system was developed as a means to detect the amounts of estradiol (E2) in a solution of 0.1 M phosphate buffer. This was done by screen printing a 3-electrode sensor made from a silver/ silver chloride counter electrode, silver reference electrode, and carbon/ ordered mesoporous carbon/ graphite working electrode. This sensor was connected to a custom developed data acquisition circuit, consisting of the LMP91000, a low-power analog front end (AFE) potentiostat paired with the ESP32 microprocessor from Espressif. This circuit was equipped with a USB connection for the purpose of data acquisition and programming, as well as a OLED digital display and a Bluetooth connectivity to display data wirelessly. This apparatus was found to detect estrogen successfully in the range of 5 nM through 5 uM with a slope error of 0.000946 and an R2 value of 0.9901 utilizing cyclic voltammetry.
{"title":"A Fully Flexible Handheld Wireless Estrogen Sensing Device","authors":"Alex Whipple, Marie Bridges, A. Hanson, D. Maddipatla, M. Atashbar","doi":"10.1109/fleps53764.2022.9781499","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781499","url":null,"abstract":"A ultra-lightweight, portable sensing system was developed as a means to detect the amounts of estradiol (E2) in a solution of 0.1 M phosphate buffer. This was done by screen printing a 3-electrode sensor made from a silver/ silver chloride counter electrode, silver reference electrode, and carbon/ ordered mesoporous carbon/ graphite working electrode. This sensor was connected to a custom developed data acquisition circuit, consisting of the LMP91000, a low-power analog front end (AFE) potentiostat paired with the ESP32 microprocessor from Espressif. This circuit was equipped with a USB connection for the purpose of data acquisition and programming, as well as a OLED digital display and a Bluetooth connectivity to display data wirelessly. This apparatus was found to detect estrogen successfully in the range of 5 nM through 5 uM with a slope error of 0.000946 and an R2 value of 0.9901 utilizing cyclic voltammetry.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"48 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124778975","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}
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