Pub Date : 2021-07-28DOI: 10.1109/NANO51122.2021.9514279
Shravanti Joshi
Atmospheric carbon dioxide (CO2) levels are rising dramatically owing to the unmonitored usage of fossil fuels, raising not only environmental hazards but also energy crises. Green energy that is, derived from renewable sources is the better exploitation of solar energy and hence, a promising idea for an efficient conversion of CO2 to hydrocarbon fuels (CxHyOz). Currently, the research activities in carbon-neutral technologies are focused on developing novel catalysts and designing highly effective conversion kinetics. In this context, for since past few years, zero lead all-inorganic halide perovskites have been trending as capable candidates due to their exceptional optoelectronic properties. Herein, we report on the facile synthesis of cesium titanium (IV) mixed halide perovskite ((CsTi(Brx.I1-x)3) with x value varying from 0 to 1) by tuning the bromide (Br) to iodide (I) ratio and its use for solar-induced CO2 reduction. Scanning electron micrographs revealed hierarchical morphology composed of several nanowires assembled into microspheres resembling the dandelions. In the presence of natural sunlight, pristine cesium titanium (IV) mixed halide perovskite (CsTi(Brx.I1-x)3) with x=0.5, yielded ~159 µmol/g of CO gas, ~94 µmol/g of CH4 and ~14 µmol/g of H2 under 6 h of experimental conditions. A lower conversion rate was observed in presence of artificial solar and UV light, which could be due to experimental conditions. The findings reported here are anticipated to contribute to the vast field of novel materials for solar fuel generation.
{"title":"Solar Induced CO2 Reduction Achieved by Halide Tuning in Cesium Titanium (IV) Mixed Perovskite","authors":"Shravanti Joshi","doi":"10.1109/NANO51122.2021.9514279","DOIUrl":"https://doi.org/10.1109/NANO51122.2021.9514279","url":null,"abstract":"Atmospheric carbon dioxide (CO2) levels are rising dramatically owing to the unmonitored usage of fossil fuels, raising not only environmental hazards but also energy crises. Green energy that is, derived from renewable sources is the better exploitation of solar energy and hence, a promising idea for an efficient conversion of CO2 to hydrocarbon fuels (CxHyOz). Currently, the research activities in carbon-neutral technologies are focused on developing novel catalysts and designing highly effective conversion kinetics. In this context, for since past few years, zero lead all-inorganic halide perovskites have been trending as capable candidates due to their exceptional optoelectronic properties. Herein, we report on the facile synthesis of cesium titanium (IV) mixed halide perovskite ((CsTi(Brx.I1-x)3) with x value varying from 0 to 1) by tuning the bromide (Br) to iodide (I) ratio and its use for solar-induced CO2 reduction. Scanning electron micrographs revealed hierarchical morphology composed of several nanowires assembled into microspheres resembling the dandelions. In the presence of natural sunlight, pristine cesium titanium (IV) mixed halide perovskite (CsTi(Brx.I1-x)3) with x=0.5, yielded ~159 µmol/g of CO gas, ~94 µmol/g of CH4 and ~14 µmol/g of H2 under 6 h of experimental conditions. A lower conversion rate was observed in presence of artificial solar and UV light, which could be due to experimental conditions. The findings reported here are anticipated to contribute to the vast field of novel materials for solar fuel generation.","PeriodicalId":6791,"journal":{"name":"2021 IEEE 21st International Conference on Nanotechnology (NANO)","volume":"82 1","pages":"299-302"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87055395","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 : 2021-07-28DOI: 10.1109/NANO51122.2021.9514308
A. Lazzaz, K. Bousbahi, M. Ghamnia
This paper explores the modeling and simulation of DG SOI (Semiconductor On Insulator) N FinFET 10 nm with Hafnium Oxide by using SILVACO TCAD Atlas Software. The major critical parameters like ION, IOFF are evaluated in order to estimate the performance of the device. The Berkeley PTM (Predictive Technology Model) parameters for 10 nm nodes are used.
本文利用SILVACO TCAD Atlas软件，对10 nm氧化铪的dgsoi (Semiconductor On Insulator) N FinFET进行了建模和仿真。主要的关键参数，如离子，IOFF进行评估，以估计设备的性能。10 nm节点采用Berkeley PTM (Predictive Technology Model)参数。
{"title":"Modeling and Simulation of DG SOI N FinFET 10 nm using Hafnium Oxide","authors":"A. Lazzaz, K. Bousbahi, M. Ghamnia","doi":"10.1109/NANO51122.2021.9514308","DOIUrl":"https://doi.org/10.1109/NANO51122.2021.9514308","url":null,"abstract":"This paper explores the modeling and simulation of DG SOI (Semiconductor On Insulator) N FinFET 10 nm with Hafnium Oxide by using SILVACO TCAD Atlas Software. The major critical parameters like ION, IOFF are evaluated in order to estimate the performance of the device. The Berkeley PTM (Predictive Technology Model) parameters for 10 nm nodes are used.","PeriodicalId":6791,"journal":{"name":"2021 IEEE 21st International Conference on Nanotechnology (NANO)","volume":"20 1","pages":"177-180"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87733794","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 : 2021-07-28DOI: 10.1109/NANO51122.2021.9514343
Vijay Rao Kumbhare, P. Paltani, M. Majumder
Emerging trends in the VLSI industry open a new way to explore the electronic behavior of the novel graphene due to fundamental limitations (physical and geometrical) of silicon CMOS technology. In order to accomplish it, the structural behavior of graphene under the influence of different intercalation doping materials is investigated using spin-polarized density functional theory (DFT) and nonequilibrium Green's function (NEGF). This work considers three different graphene structures such as an armchair, zigzag, and (3, 2) chiral configurations to demonstrate the transmission spectrum for doped and pristine multi-layered graphene nanoribbon (MLGNR). Further, pristine graphene is compared with the different intercalation doped materials such as Lithium (Li), Ferric chloride (FeCl3), Arsenic pentafluoride (AsF5), and Molybdenum pentachloride (MoCl5) to observe the transmission in the central channel region. It is evident that the intercalated Li doping on zigzag MLGNR provides 71.60%, 95.12%, and 88.23% higher transmission in the central channel region compared to pristine zigzag, armchair, and (3, 2) chiral structures, respectively. Therefore, it is observed that intercalation doping is a suitable choice to improve the metallic nature of MLGNR structure that can be a better choice for nanoscale interconnect application.
{"title":"First Principle Study of Electronic Property of Doped/Undoped Graphene Structure for Interconnect Application","authors":"Vijay Rao Kumbhare, P. Paltani, M. Majumder","doi":"10.1109/NANO51122.2021.9514343","DOIUrl":"https://doi.org/10.1109/NANO51122.2021.9514343","url":null,"abstract":"Emerging trends in the VLSI industry open a new way to explore the electronic behavior of the novel graphene due to fundamental limitations (physical and geometrical) of silicon CMOS technology. In order to accomplish it, the structural behavior of graphene under the influence of different intercalation doping materials is investigated using spin-polarized density functional theory (DFT) and nonequilibrium Green's function (NEGF). This work considers three different graphene structures such as an armchair, zigzag, and (3, 2) chiral configurations to demonstrate the transmission spectrum for doped and pristine multi-layered graphene nanoribbon (MLGNR). Further, pristine graphene is compared with the different intercalation doped materials such as Lithium (Li), Ferric chloride (FeCl3), Arsenic pentafluoride (AsF5), and Molybdenum pentachloride (MoCl5) to observe the transmission in the central channel region. It is evident that the intercalated Li doping on zigzag MLGNR provides 71.60%, 95.12%, and 88.23% higher transmission in the central channel region compared to pristine zigzag, armchair, and (3, 2) chiral structures, respectively. Therefore, it is observed that intercalation doping is a suitable choice to improve the metallic nature of MLGNR structure that can be a better choice for nanoscale interconnect application.","PeriodicalId":6791,"journal":{"name":"2021 IEEE 21st International Conference on Nanotechnology (NANO)","volume":"1 1","pages":"77-80"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88829130","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 : 2021-07-28DOI: 10.1109/NANO51122.2021.9514298
J. A. Lekshmi, T. N. Kumar, A. Haider, K. Jinesh
This paper presents an analytical model of the cycle to cycle (c2c) variability in Pt/Ta2O5/TaOx/Pt RRAM device. The model is developed by considering the dynamic randomness in physical parameters related to the conduction filament of the device by demonstrating the formation of a sub filamentary network. The reasons behind the variability of the device characteristics are categorized into three possible aspects such as the formation of unstable sub filaments with varying lengths, formation of conduction filament with different radius in multiple cycles, and the barrier height modulations due to change in the number of oxygen vacancies(Vos) present at the interface and bulk. The major observations from the model are; the multiple resistive levels seen in the RRAM device is due to the formation of multiple stable/unstable filaments, the radius of the conduction filament has an impact on the RESET voltage, and finally, the modulations in tunneling barrier height cause randomness in high resistance state (HRS) of the device.
{"title":"Implementation of sub-filamentary network-based variability model for Ta2O5/TaOx RRAM","authors":"J. A. Lekshmi, T. N. Kumar, A. Haider, K. Jinesh","doi":"10.1109/NANO51122.2021.9514298","DOIUrl":"https://doi.org/10.1109/NANO51122.2021.9514298","url":null,"abstract":"This paper presents an analytical model of the cycle to cycle (c2c) variability in Pt/Ta2O5/TaOx/Pt RRAM device. The model is developed by considering the dynamic randomness in physical parameters related to the conduction filament of the device by demonstrating the formation of a sub filamentary network. The reasons behind the variability of the device characteristics are categorized into three possible aspects such as the formation of unstable sub filaments with varying lengths, formation of conduction filament with different radius in multiple cycles, and the barrier height modulations due to change in the number of oxygen vacancies(Vos) present at the interface and bulk. The major observations from the model are; the multiple resistive levels seen in the RRAM device is due to the formation of multiple stable/unstable filaments, the radius of the conduction filament has an impact on the RESET voltage, and finally, the modulations in tunneling barrier height cause randomness in high resistance state (HRS) of the device.","PeriodicalId":6791,"journal":{"name":"2021 IEEE 21st International Conference on Nanotechnology (NANO)","volume":"16 1","pages":"366-369"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82388083","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 : 2021-07-28DOI: 10.1109/NANO51122.2021.9514326
N. Zablodskiy, S. Kovalchuk, R. Chuenko, Oleksii Romanenko, V. Gritsyuk
The analysis of the electromechanical device with nanofluid filling is performed in the work. The principle of operation of this machine is developed theoretically. Mechanical characteristics, spatial representation of heating and distribution density of magnetic induction were obtained by numerical analysis by the finite element method. According to the simulation results, by applying the nanofluid in the device, an increase in the electromagnetic moment is achieved, heat exchange conditions are improved.
{"title":"The nanofluids application in a twin-screw electromechanical hydrolyser","authors":"N. Zablodskiy, S. Kovalchuk, R. Chuenko, Oleksii Romanenko, V. Gritsyuk","doi":"10.1109/NANO51122.2021.9514326","DOIUrl":"https://doi.org/10.1109/NANO51122.2021.9514326","url":null,"abstract":"The analysis of the electromechanical device with nanofluid filling is performed in the work. The principle of operation of this machine is developed theoretically. Mechanical characteristics, spatial representation of heating and distribution density of magnetic induction were obtained by numerical analysis by the finite element method. According to the simulation results, by applying the nanofluid in the device, an increase in the electromagnetic moment is achieved, heat exchange conditions are improved.","PeriodicalId":6791,"journal":{"name":"2021 IEEE 21st International Conference on Nanotechnology (NANO)","volume":"52 1","pages":"108-111"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81166876","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 : 2021-07-28DOI: 10.1109/NANO51122.2021.9514337
A. Sanati, R. Moakhar, K. Raeissi, F. Karimzadeh, H. Vali, S. Mahshid
Here, we have developed a biomimetic sensor using gold nano/micro-islands (NMIs) and molecularly imprinted polymers (MIPs) for electrochemical detection of H-FABP. The fabricated nanostructured electrode was characterized and its analytical performance was evaluated in human serum spiked with H-FABP in the clinical range (10 pg mL−1 to 100 ng mL−1). In this regard, an excellent linear performance (R2=0.99) and a low limit of detection (LOD) of 4.86 pg mL−1 were observed. Moreover, the selectivity performance of the proposed biosensor was investigated in the presence of troponin T (TnT), and myoglobin (Myo). The differential pulse voltammetry (DPV) results showed that the MIP current has altered approximately 16, 20, and 62% for TnT, Myo, and H-FABP, respectively, confirming the low interference of other cardiac biomarkers on the sensing performance. Ultimately, the developed biomimetic sensor fabricated by the integration of hierarchical structures of gold and MIP opens up future perspectives for sensitive, low-cost, and early detection of myocardial infarction in human serum.
本文利用金纳米/微岛(NMIs)和分子印迹聚合物(MIPs)开发了一种用于H-FABP电化学检测的仿生传感器。对制备的纳米结构电极进行了表征，并在临床范围(10 pg mL−1 ~ 100 ng mL−1)内对加入H-FABP的人血清的分析性能进行了评价。在这方面，观察到良好的线性性能(R2=0.99)和低检出限(LOD)为4.86 pg mL−1。此外，研究了该生物传感器在肌钙蛋白T (TnT)和肌红蛋白(Myo)存在下的选择性性能。差分脉冲伏安法(DPV)结果显示，TnT、Myo和H-FABP的MIP电流分别改变了约16%、20%和62%，证实了其他心脏生物标志物对传感性能的低干扰。最终，开发出的由金和MIP分层结构集成而成的仿生传感器为灵敏、低成本和早期检测人类血清中的心肌梗死开辟了未来的前景。
{"title":"Detection of heart-fatty acid binding protein in human serum using gold nano/micro-islands and molecularly imprinted polymers","authors":"A. Sanati, R. Moakhar, K. Raeissi, F. Karimzadeh, H. Vali, S. Mahshid","doi":"10.1109/NANO51122.2021.9514337","DOIUrl":"https://doi.org/10.1109/NANO51122.2021.9514337","url":null,"abstract":"Here, we have developed a biomimetic sensor using gold nano/micro-islands (NMIs) and molecularly imprinted polymers (MIPs) for electrochemical detection of H-FABP. The fabricated nanostructured electrode was characterized and its analytical performance was evaluated in human serum spiked with H-FABP in the clinical range (10 pg mL−1 to 100 ng mL−1). In this regard, an excellent linear performance (R2=0.99) and a low limit of detection (LOD) of 4.86 pg mL−1 were observed. Moreover, the selectivity performance of the proposed biosensor was investigated in the presence of troponin T (TnT), and myoglobin (Myo). The differential pulse voltammetry (DPV) results showed that the MIP current has altered approximately 16, 20, and 62% for TnT, Myo, and H-FABP, respectively, confirming the low interference of other cardiac biomarkers on the sensing performance. Ultimately, the developed biomimetic sensor fabricated by the integration of hierarchical structures of gold and MIP opens up future perspectives for sensitive, low-cost, and early detection of myocardial infarction in human serum.","PeriodicalId":6791,"journal":{"name":"2021 IEEE 21st International Conference on Nanotechnology (NANO)","volume":"16 1","pages":"397-399"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91527270","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 : 2021-07-28DOI: 10.1109/NANO51122.2021.9514287
Sou Takeuchi, D. Ohori, Teruhisa Ishida, Mami Tanaka, Masahiro Sota, Yiming Li, J. Tarng, K. Endo, Seiji Sarnukawa
We made nanopillars with intervals of several tens of nanometers and diameter, and examined wettability. When the interval is narrow, the capillary phenomenon can be suppressed and hydrophobicity is realized. On the other hand, when the interval was widened, the wettability decreased due to the capillary phenomenon. As a result, it was found that the Cassie-Baxter model with filling factor gives a hydrophobic effect as the wetting property becomes narrower.
{"title":"Surface wettability of nanopillar array structures fabricated by bio-template ultimate top-down processes","authors":"Sou Takeuchi, D. Ohori, Teruhisa Ishida, Mami Tanaka, Masahiro Sota, Yiming Li, J. Tarng, K. Endo, Seiji Sarnukawa","doi":"10.1109/NANO51122.2021.9514287","DOIUrl":"https://doi.org/10.1109/NANO51122.2021.9514287","url":null,"abstract":"We made nanopillars with intervals of several tens of nanometers and diameter, and examined wettability. When the interval is narrow, the capillary phenomenon can be suppressed and hydrophobicity is realized. On the other hand, when the interval was widened, the wettability decreased due to the capillary phenomenon. As a result, it was found that the Cassie-Baxter model with filling factor gives a hydrophobic effect as the wetting property becomes narrower.","PeriodicalId":6791,"journal":{"name":"2021 IEEE 21st International Conference on Nanotechnology (NANO)","volume":"68 1","pages":"203-206"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76657162","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 : 2021-07-28DOI: 10.1109/NANO51122.2021.9514325
V. Karimi, Viktoriia E. Babicheva
We analyze the multipole lattice effects on the resonant properties of periodic nanostructures and nanophotonic components made of lossy materials. The periodic arrangement of nanoscatterers facilitates the excitation of additional multipoles and allows light localization in planar photonic components. We show that our design can improve localized resonances and enhance the efficiency of the nanophotonic devices and sensors by adjusting nanoantenna periodicity in in-plane directions.
{"title":"Collective Resonances of Lossy Material Nanoantennas","authors":"V. Karimi, Viktoriia E. Babicheva","doi":"10.1109/NANO51122.2021.9514325","DOIUrl":"https://doi.org/10.1109/NANO51122.2021.9514325","url":null,"abstract":"We analyze the multipole lattice effects on the resonant properties of periodic nanostructures and nanophotonic components made of lossy materials. The periodic arrangement of nanoscatterers facilitates the excitation of additional multipoles and allows light localization in planar photonic components. We show that our design can improve localized resonances and enhance the efficiency of the nanophotonic devices and sensors by adjusting nanoantenna periodicity in in-plane directions.","PeriodicalId":6791,"journal":{"name":"2021 IEEE 21st International Conference on Nanotechnology (NANO)","volume":"158 1","pages":"429-432"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76884542","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 : 2021-07-28DOI: 10.1109/NANO51122.2021.9514303
S. Agrawal, A. Srivastava, G. Kaushal
Density functional theory with non-equilibrium Green's function has been used to extract the current voltage behaviour, fermi velocities and dynamical parameters of Oxygen (O) doped Zigzag Graphene Nano ribbons (GNRs). The Zigzag GNR has been subjected to monovacancy, and decorated with oxygen impurities at three possible sites around the Monovacancy (MV). The transport properties of these structures have been analysed in terms of transmission spectrum, I- V characteristics, transmission pathways and the dynamical parameters (kinetic inductance and quantum capacitance) of oxygen decorated ZGNRs. It has been observed that both linear I- V characteristics and improved dynamical parameters of 20- MVZGNR are relatively suitable for interconnect application in comparison to its other counterparts.
{"title":"Understanding Electron Transport in oxygen decorated Zigzag Graphene nanoribbons for nanoscale interconnects","authors":"S. Agrawal, A. Srivastava, G. Kaushal","doi":"10.1109/NANO51122.2021.9514303","DOIUrl":"https://doi.org/10.1109/NANO51122.2021.9514303","url":null,"abstract":"Density functional theory with non-equilibrium Green's function has been used to extract the current voltage behaviour, fermi velocities and dynamical parameters of Oxygen (O) doped Zigzag Graphene Nano ribbons (GNRs). The Zigzag GNR has been subjected to monovacancy, and decorated with oxygen impurities at three possible sites around the Monovacancy (MV). The transport properties of these structures have been analysed in terms of transmission spectrum, I- V characteristics, transmission pathways and the dynamical parameters (kinetic inductance and quantum capacitance) of oxygen decorated ZGNRs. It has been observed that both linear I- V characteristics and improved dynamical parameters of 20- MVZGNR are relatively suitable for interconnect application in comparison to its other counterparts.","PeriodicalId":6791,"journal":{"name":"2021 IEEE 21st International Conference on Nanotechnology (NANO)","volume":"45 1","pages":"21-24"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75606064","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 : 2021-07-28DOI: 10.1109/NANO51122.2021.9514286
Huy Nguyen, Jose Montes, Sepehr Soroushiani, Sk Yeahia Been Sayeed, Carolina Moncion, J. R. Diaz, P. Raj
Flexible electrode arrays with low impedance are becoming critical to enhance single-neuron sensing with high sensitivity. Such electrodes should be scalable to micron dimensions and yet retain low impedance. The key to accomplish this is to achieve: a) higher effective surface area to obtain high capacitance, b) chemically stable and biocompatible materials with no adverse reactions and toxicity, and c) mechanically compliant structures for minimal scar tissue formation. Nanostructured electrode arrays with emerging materials such as graphene and PEDOT -PSS are projected to meet all these requirements. Graphene - PEDOT-PSS films were transferred onto flexible LCP (liquid crystal polymer) substrates to form neural electrode recording arrays. These electrodes were subsequently integrated with flexible passive wireless neural recording sensors to form low-impedance (<1 Ohms-cm2) neural recording units. Impedance enhancements were simulated and validated with an electrochemical analyzer in a phosphate buffered saline PBS solution. In addition, evoked potentials during pulse stimulation were recorded to show improved signal - noise ratio with low-impedance electrodes.
{"title":"Low-Impedance Graphene – PEDOT-PSS Electrodes for Neural Recording and Stimulation in Implantable Medical Devices","authors":"Huy Nguyen, Jose Montes, Sepehr Soroushiani, Sk Yeahia Been Sayeed, Carolina Moncion, J. R. Diaz, P. Raj","doi":"10.1109/NANO51122.2021.9514286","DOIUrl":"https://doi.org/10.1109/NANO51122.2021.9514286","url":null,"abstract":"Flexible electrode arrays with low impedance are becoming critical to enhance single-neuron sensing with high sensitivity. Such electrodes should be scalable to micron dimensions and yet retain low impedance. The key to accomplish this is to achieve: a) higher effective surface area to obtain high capacitance, b) chemically stable and biocompatible materials with no adverse reactions and toxicity, and c) mechanically compliant structures for minimal scar tissue formation. Nanostructured electrode arrays with emerging materials such as graphene and PEDOT -PSS are projected to meet all these requirements. Graphene - PEDOT-PSS films were transferred onto flexible LCP (liquid crystal polymer) substrates to form neural electrode recording arrays. These electrodes were subsequently integrated with flexible passive wireless neural recording sensors to form low-impedance (<1 Ohms-cm2) neural recording units. Impedance enhancements were simulated and validated with an electrochemical analyzer in a phosphate buffered saline PBS solution. In addition, evoked potentials during pulse stimulation were recorded to show improved signal - noise ratio with low-impedance electrodes.","PeriodicalId":6791,"journal":{"name":"2021 IEEE 21st International Conference on Nanotechnology (NANO)","volume":"19 1","pages":"327-330"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83521754","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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