Pub Date : 2021-12-12DOI: 10.1109/NMDC50713.2021.9677472
R. Shaik, K. P. Pradhan
In this work, temperature effect on MFMIS type FDSOI NCFET is investigated considering a well known thin film ferroelectric material HSO (Silicon doped HfO2). The current investigations are performed in a TCAD environment where the underlying gate charge is obtained using TCAD simulation to computing ferro voltage across the HSO ferroelectric capacitor to find the total gate voltage in the gate-stack. The extracted values are then investigated for a non-hysteric operation while varying ferroelectric thickness $(mathrm{T}_{F})$ to predict the optimum $mathrm{T}_{F}$ of HSO ferroelectric. The optimum HSO type MFMIS NCFET has been subjected to variation in temperature to predict the electrical performance of the device under harsh environments. It is observed that the HSO type MFMIS NCFET predicts improvement in sub-threshold slope (SS) and amplification factor $(mathrm{A}_{V})$ at operating temperatures reduced significantly lower than the ferroelectric Curie temperature whereas the device tends to show slight deterioration in SS and $mathrm{A}_{V}$ when the operating temperature approaches the Curie temperature.
{"title":"Investigation of Temperature Variation on a HSO Ferroelectric FDSOI NCFET","authors":"R. Shaik, K. P. Pradhan","doi":"10.1109/NMDC50713.2021.9677472","DOIUrl":"https://doi.org/10.1109/NMDC50713.2021.9677472","url":null,"abstract":"In this work, temperature effect on MFMIS type FDSOI NCFET is investigated considering a well known thin film ferroelectric material HSO (Silicon doped HfO2). The current investigations are performed in a TCAD environment where the underlying gate charge is obtained using TCAD simulation to computing ferro voltage across the HSO ferroelectric capacitor to find the total gate voltage in the gate-stack. The extracted values are then investigated for a non-hysteric operation while varying ferroelectric thickness $(mathrm{T}_{F})$ to predict the optimum $mathrm{T}_{F}$ of HSO ferroelectric. The optimum HSO type MFMIS NCFET has been subjected to variation in temperature to predict the electrical performance of the device under harsh environments. It is observed that the HSO type MFMIS NCFET predicts improvement in sub-threshold slope (SS) and amplification factor $(mathrm{A}_{V})$ at operating temperatures reduced significantly lower than the ferroelectric Curie temperature whereas the device tends to show slight deterioration in SS and $mathrm{A}_{V}$ when the operating temperature approaches the Curie temperature.","PeriodicalId":6742,"journal":{"name":"2021 IEEE 16th Nanotechnology Materials and Devices Conference (NMDC)","volume":"72 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77278502","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 : 2021-12-12DOI: 10.1109/NMDC50713.2021.9677473
J. Spicer
In this work, models for scanning near-field optical probes based on dipole radiators are developed for representing the behaviors of these probes for high resolution detection of ultrasound in dielectric materials. The simplest case considered uses a vertically-oriented electric dipole radiator that is located a distance above a surface being displaced by ultrasound. The relatively high symmetry of this model geometry permits analytical representation of the fields radiated by the dipole including those associated with interactions with the material surface. The amplitude and the phase of the directly-reflected and the lateral wave fields depend on the material properties and on the distance of the dipole above the surface. When combined with the direct field, these fields coherently interfere to produce a radiation pattern above the surface that includes information about surface displacements associated with ultrasonic arrivals. In particular, the optical power radiated into the far-field can be monitored and used for ultrasound detection. Expressions for the radiated power are developed that include the dependence on material properties and explicitly show the contributions of the directly-reflected and lateral wavefields. These expressions are particularly simple when the material has limiting values of either electrical conductivity or dielectric permittivity, but the focus of the current work is on materials that cannot be described by these extreme property limits. Consideration of the general case permits a broader exploration of the ultrasonic signals that would be produced in these types of systems. This work examines the sensitivity of near-field probes to ultrasonic displacements and provides guidance on approaches to optimization of ultrasound detection using these types of probes.
{"title":"High-Resolution Imaging of Ultrasound in Dielectric Materials using Near-Field Scanning Optical Microscopy","authors":"J. Spicer","doi":"10.1109/NMDC50713.2021.9677473","DOIUrl":"https://doi.org/10.1109/NMDC50713.2021.9677473","url":null,"abstract":"In this work, models for scanning near-field optical probes based on dipole radiators are developed for representing the behaviors of these probes for high resolution detection of ultrasound in dielectric materials. The simplest case considered uses a vertically-oriented electric dipole radiator that is located a distance above a surface being displaced by ultrasound. The relatively high symmetry of this model geometry permits analytical representation of the fields radiated by the dipole including those associated with interactions with the material surface. The amplitude and the phase of the directly-reflected and the lateral wave fields depend on the material properties and on the distance of the dipole above the surface. When combined with the direct field, these fields coherently interfere to produce a radiation pattern above the surface that includes information about surface displacements associated with ultrasonic arrivals. In particular, the optical power radiated into the far-field can be monitored and used for ultrasound detection. Expressions for the radiated power are developed that include the dependence on material properties and explicitly show the contributions of the directly-reflected and lateral wavefields. These expressions are particularly simple when the material has limiting values of either electrical conductivity or dielectric permittivity, but the focus of the current work is on materials that cannot be described by these extreme property limits. Consideration of the general case permits a broader exploration of the ultrasonic signals that would be produced in these types of systems. This work examines the sensitivity of near-field probes to ultrasonic displacements and provides guidance on approaches to optimization of ultrasound detection using these types of probes.","PeriodicalId":6742,"journal":{"name":"2021 IEEE 16th Nanotechnology Materials and Devices Conference (NMDC)","volume":"31 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80962063","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 : 2021-12-12DOI: 10.1109/NMDC50713.2021.9677495
A. Zinn, Rachel L. Brody, M. Izadjoo, R. Roth, R. Stoltenberg
Copper has been used throughout history for its antimicrobial capacity; long before any mechanisms were understood it was folk medicine. Today, there are over 500 copper alloys registered with the EPA for their proven antipathogenic capabilities. These materials are unique compared to traditional disinfectants because of their broadband activity, longevity and ability to self-sterilize. They have significant potential in healthcare, industrial, and commercial settings because they are non-specific and able to kill all pathogens tested thus far. However, in the past they have been hindered by their action timeline; conventionally available bulk coppers are highly oxidized and frequently have very low surface areas. We have developed a novel copper configuration that remains unoxidized and possesses an extremely high surface area, thus making it ultra-active against pathogens. The testing we have done makes a very promising case for our copper, ActiveCopper, to be used in settings that experience frequent contact and need to be disinfected frequently. It eliminates infectious agents in less than a minute and retains that ability for years. In this paper we explore the possible mechanisms behind its unprecedented action and exhibit our analyses of its characteristics.
{"title":"Making ultra-active antimicrobial copper possible through surface area enhancement","authors":"A. Zinn, Rachel L. Brody, M. Izadjoo, R. Roth, R. Stoltenberg","doi":"10.1109/NMDC50713.2021.9677495","DOIUrl":"https://doi.org/10.1109/NMDC50713.2021.9677495","url":null,"abstract":"Copper has been used throughout history for its antimicrobial capacity; long before any mechanisms were understood it was folk medicine. Today, there are over 500 copper alloys registered with the EPA for their proven antipathogenic capabilities. These materials are unique compared to traditional disinfectants because of their broadband activity, longevity and ability to self-sterilize. They have significant potential in healthcare, industrial, and commercial settings because they are non-specific and able to kill all pathogens tested thus far. However, in the past they have been hindered by their action timeline; conventionally available bulk coppers are highly oxidized and frequently have very low surface areas. We have developed a novel copper configuration that remains unoxidized and possesses an extremely high surface area, thus making it ultra-active against pathogens. The testing we have done makes a very promising case for our copper, ActiveCopper, to be used in settings that experience frequent contact and need to be disinfected frequently. It eliminates infectious agents in less than a minute and retains that ability for years. In this paper we explore the possible mechanisms behind its unprecedented action and exhibit our analyses of its characteristics.","PeriodicalId":6742,"journal":{"name":"2021 IEEE 16th Nanotechnology Materials and Devices Conference (NMDC)","volume":"39 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73121119","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 : 2021-12-12DOI: 10.1109/NMDC50713.2021.9677562
M. Soumbo, C. Villeneuve-Faure, C. Bonafos, C. Roques, K. Makasheva
Driven by many applications, the development of new biomaterials has considerably increased in the last decade. The current research strategies also involve revealing of the relationship between protein structure and function due to the exposure and interaction of proteins with non-biological organic and inorganic solid surfaces. Aiming at understanding of the mechanisms of protein adsorption on solid surfaces we follow in this work the organization dynamics of proteins (Bovine Serum Albumin, BSA and Fibronectin, Fn) adsorbed on thin silica layers without or with silver nanoparticles (AgNPs), deposited on their surfaces. It is found that although starting with the same protein concentration in solution (0.05 g/L), the adsorbed amount of proteins on SiO2 surfaces is twice larger for Fn $(1.32 mu mathrm{g}/text{cm}^{2})$ compared to BSA $(0.58 mu mathrm{g}/text{cm}^{2})$. The proteins adopt different conformations according to the surface pattern. On a flat SiO2 surface, the BSA proteins organize in a lace-like network while the Fn proteins adopt a branching-type. The patterned by AgNPs surfaces induce conformational changes of the proteins. In interaction with AgNPs both types of proteins fold up to attain mainly compact globular conformation.
在许多应用的推动下，新型生物材料的发展在过去十年中有了显著的增长。由于蛋白质与非生物有机和无机固体表面的暴露和相互作用，目前的研究策略还涉及揭示蛋白质结构和功能之间的关系。为了了解蛋白质在固体表面的吸附机制，我们在这项工作中跟踪了蛋白质(牛血清白蛋白，BSA和纤维连接蛋白，Fn)吸附在薄二氧化硅层上的组织动力学，没有或有银纳米颗粒(AgNPs)沉积在它们的表面。结果表明，虽然溶液中蛋白质浓度相同(0.05 g/L)，但Fn $(1.32 mu mathrm{g}/text{cm}^{2})$在SiO2表面上吸附的蛋白质量是BSA $(0.58 mu mathrm{g}/text{cm}^{2})$的两倍。蛋白质根据表面形态采取不同的构象。在平坦的SiO2表面，BSA蛋白呈网状结构，而Fn蛋白呈支链结构。AgNPs表面的图案诱导了蛋白质的构象变化。在与AgNPs的相互作用中，这两种类型的蛋白质折叠起来以获得主要致密的球状构象。
{"title":"Protein interaction with SiO2 and AgNPs: from adsorption on solid surfaces to organization and conformational changes","authors":"M. Soumbo, C. Villeneuve-Faure, C. Bonafos, C. Roques, K. Makasheva","doi":"10.1109/NMDC50713.2021.9677562","DOIUrl":"https://doi.org/10.1109/NMDC50713.2021.9677562","url":null,"abstract":"Driven by many applications, the development of new biomaterials has considerably increased in the last decade. The current research strategies also involve revealing of the relationship between protein structure and function due to the exposure and interaction of proteins with non-biological organic and inorganic solid surfaces. Aiming at understanding of the mechanisms of protein adsorption on solid surfaces we follow in this work the organization dynamics of proteins (Bovine Serum Albumin, BSA and Fibronectin, Fn) adsorbed on thin silica layers without or with silver nanoparticles (AgNPs), deposited on their surfaces. It is found that although starting with the same protein concentration in solution (0.05 g/L), the adsorbed amount of proteins on SiO2 surfaces is twice larger for Fn $(1.32 mu mathrm{g}/text{cm}^{2})$ compared to BSA $(0.58 mu mathrm{g}/text{cm}^{2})$. The proteins adopt different conformations according to the surface pattern. On a flat SiO2 surface, the BSA proteins organize in a lace-like network while the Fn proteins adopt a branching-type. The patterned by AgNPs surfaces induce conformational changes of the proteins. In interaction with AgNPs both types of proteins fold up to attain mainly compact globular conformation.","PeriodicalId":6742,"journal":{"name":"2021 IEEE 16th Nanotechnology Materials and Devices Conference (NMDC)","volume":"40 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76680014","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 : 2021-12-12DOI: 10.1109/NMDC50713.2021.9677532
A. Dorval, Naomi Bourbeau, K. Géraud, F. Valensi, A. Hamdan
Discharge in dielectric liquid is a field of research involved in many applications. Here, we study the influence of electrode material on the electrical characteristics of discharges in distilled water. For a given electrode material, the discharges are run continuously (at 5 Hz) until they fail to occur. Voltage and current waveforms of each discharge are recorded and processed, using an algorithm, to determine the probability of discharge occurrence, breakdown voltage, discharge current, and discharge delay. Anode erosion rate was also determined, and its dependence on the physical properties of the material, such as melting temperature and Young's modulus, is discussed.
{"title":"Influence of electrodes nature on the electrical characteristics of spark discharges in water","authors":"A. Dorval, Naomi Bourbeau, K. Géraud, F. Valensi, A. Hamdan","doi":"10.1109/NMDC50713.2021.9677532","DOIUrl":"https://doi.org/10.1109/NMDC50713.2021.9677532","url":null,"abstract":"Discharge in dielectric liquid is a field of research involved in many applications. Here, we study the influence of electrode material on the electrical characteristics of discharges in distilled water. For a given electrode material, the discharges are run continuously (at 5 Hz) until they fail to occur. Voltage and current waveforms of each discharge are recorded and processed, using an algorithm, to determine the probability of discharge occurrence, breakdown voltage, discharge current, and discharge delay. Anode erosion rate was also determined, and its dependence on the physical properties of the material, such as melting temperature and Young's modulus, is discussed.","PeriodicalId":6742,"journal":{"name":"2021 IEEE 16th Nanotechnology Materials and Devices Conference (NMDC)","volume":"37 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89277004","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 : 2021-12-12DOI: 10.1109/NMDC50713.2021.9677559
Yifu Huang, Xiaohan Wu, Yuqian Gu, Ruijing Ge, Jiahan Zhang, Yao‐Feng Chang, D. Akinwande, Jack C. Lee
Resistive random-access memory (RRAM) has become one of the most promising devices for emerging non-volatile memory and brain-inspired neuromorphic computing applications. As a two-dimensional material, monolayer rhenium diselenide (ReSe2) has been reported to exhibit non-volatile resistive switching (NVRS) phenomenon and applied in RRAM devices. In this work, a ReSe2-based RRAM device is proposed. Multi-step resistive switching behavior is observed under DC sweep. By applying proper pulse stimulus, it has been demonstrated that the proposed device exhibits long-term potentiation and depression (LTP/LTD), which is implemented in a Verilog-A model for the purpose of circuit-level simulation.
{"title":"2D RRAM and Verilog-A model for Neuromorphic Computing","authors":"Yifu Huang, Xiaohan Wu, Yuqian Gu, Ruijing Ge, Jiahan Zhang, Yao‐Feng Chang, D. Akinwande, Jack C. Lee","doi":"10.1109/NMDC50713.2021.9677559","DOIUrl":"https://doi.org/10.1109/NMDC50713.2021.9677559","url":null,"abstract":"Resistive random-access memory (RRAM) has become one of the most promising devices for emerging non-volatile memory and brain-inspired neuromorphic computing applications. As a two-dimensional material, monolayer rhenium diselenide (ReSe2) has been reported to exhibit non-volatile resistive switching (NVRS) phenomenon and applied in RRAM devices. In this work, a ReSe2-based RRAM device is proposed. Multi-step resistive switching behavior is observed under DC sweep. By applying proper pulse stimulus, it has been demonstrated that the proposed device exhibits long-term potentiation and depression (LTP/LTD), which is implemented in a Verilog-A model for the purpose of circuit-level simulation.","PeriodicalId":6742,"journal":{"name":"2021 IEEE 16th Nanotechnology Materials and Devices Conference (NMDC)","volume":"26 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87027143","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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