Pub Date : 2017-07-01DOI: 10.1109/NANO.2017.8117413
Huiren Xu, Jinping Luo, Yang Wang, Yilin Song, Li Wang, Xinxia Cai
Brain-derived neurotrophic factor (BDNF) has been shown to play an important role in numerous processes of functional and structural synaptic plasticity in the mammalian central nervous system. In this work, we report a novel immune microelectrode array (MEA) for electrochemical detection of BDNF without labeling step. The chitosan-thionine-multi-walled carbon nanotubes (CS-THI-MWCNTs) composite films as the bio-sensitive film are modified onto the MEA by electrochemical deposition and successfully adopted to immobilize anti-BDNF for the fabrication of electrochemical immune MEA. The THI acted as an electrochemical indicator for the immune response of BDNF. Due to surface-controlled process of THI redox reaction, the increasing formation of anti-BDNF-BDNF immunocomplex resulted in the decreased response currents of THI and the response currents were inversely proportional to the concentrations of corresponding BDNF. The test results of performance revealed that the label-free electrochemical immune MEA had a good stability, selectivity and the limit of detections for BDNF is 5 pg/mL. A linear calibration plot for detection of BDNF was obtained in a wide concentration range from 0.01 ng/mL to 100 ng/mL (r = 0.9995). This novel electrochemical immune MEA has potential applications to detect BDNF for neuroscience research.
{"title":"Label-free electrochemical detection of brain-derived neurotrophic factor based on a novel immune microelectrode array","authors":"Huiren Xu, Jinping Luo, Yang Wang, Yilin Song, Li Wang, Xinxia Cai","doi":"10.1109/NANO.2017.8117413","DOIUrl":"https://doi.org/10.1109/NANO.2017.8117413","url":null,"abstract":"Brain-derived neurotrophic factor (BDNF) has been shown to play an important role in numerous processes of functional and structural synaptic plasticity in the mammalian central nervous system. In this work, we report a novel immune microelectrode array (MEA) for electrochemical detection of BDNF without labeling step. The chitosan-thionine-multi-walled carbon nanotubes (CS-THI-MWCNTs) composite films as the bio-sensitive film are modified onto the MEA by electrochemical deposition and successfully adopted to immobilize anti-BDNF for the fabrication of electrochemical immune MEA. The THI acted as an electrochemical indicator for the immune response of BDNF. Due to surface-controlled process of THI redox reaction, the increasing formation of anti-BDNF-BDNF immunocomplex resulted in the decreased response currents of THI and the response currents were inversely proportional to the concentrations of corresponding BDNF. The test results of performance revealed that the label-free electrochemical immune MEA had a good stability, selectivity and the limit of detections for BDNF is 5 pg/mL. A linear calibration plot for detection of BDNF was obtained in a wide concentration range from 0.01 ng/mL to 100 ng/mL (r = 0.9995). This novel electrochemical immune MEA has potential applications to detect BDNF for neuroscience research.","PeriodicalId":292399,"journal":{"name":"2017 IEEE 17th International Conference on Nanotechnology (IEEE-NANO)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116670691","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 : 2017-07-01DOI: 10.1109/NANO.2017.8117353
Hongfei Zu, Qing-Ming Wang, Yanqing Zheng
The acoustic wave (AW) sensors can response to a physical, chemical, or biological stimulus in a sensitive and real-time manner, so they have drawn increasing attraction in recent years. Among the AW sensors, the piezoelectric ones show a lot of extraordinary merits such as high resolution, wide frequency and temperature ranges, high stability, low power consumption, and low cost, and they are able to sense many physical and chemical quantities such as temperature, pressure, mass, gas concentration, and liquid viscosity [1-3]. To date, many surface acoustic wave (SAW) sensors [4], thin film bulk acoustic resonators (FBAR) [5], and bulk acoustic wave (BAW) [6] sensors have been reported as mass sensors. Compared to the former two types, BAW mass sensors are with the property of simple preparation process, easy to use, high temperature-tolerance, high repeatability and durability, and little damping, because neither the interdigitated transducers (IDTs) nor the functional piezoelectric thin film is needed. Therefore, piezoelectric BAW mass sensors that can be used at elevated temperature range are ideal devices for thermogravimetric analysis (TGA) applications.
{"title":"High temperature piezoelectric bulk acoustic wave mass sensor for thermogravimetric analysis of nano-layer polymer","authors":"Hongfei Zu, Qing-Ming Wang, Yanqing Zheng","doi":"10.1109/NANO.2017.8117353","DOIUrl":"https://doi.org/10.1109/NANO.2017.8117353","url":null,"abstract":"The acoustic wave (AW) sensors can response to a physical, chemical, or biological stimulus in a sensitive and real-time manner, so they have drawn increasing attraction in recent years. Among the AW sensors, the piezoelectric ones show a lot of extraordinary merits such as high resolution, wide frequency and temperature ranges, high stability, low power consumption, and low cost, and they are able to sense many physical and chemical quantities such as temperature, pressure, mass, gas concentration, and liquid viscosity [1-3]. To date, many surface acoustic wave (SAW) sensors [4], thin film bulk acoustic resonators (FBAR) [5], and bulk acoustic wave (BAW) [6] sensors have been reported as mass sensors. Compared to the former two types, BAW mass sensors are with the property of simple preparation process, easy to use, high temperature-tolerance, high repeatability and durability, and little damping, because neither the interdigitated transducers (IDTs) nor the functional piezoelectric thin film is needed. Therefore, piezoelectric BAW mass sensors that can be used at elevated temperature range are ideal devices for thermogravimetric analysis (TGA) applications.","PeriodicalId":292399,"journal":{"name":"2017 IEEE 17th International Conference on Nanotechnology (IEEE-NANO)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122428426","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 : 2017-07-01DOI: 10.1109/NANO.2017.8117357
Hongmei Dang, E. Ososanya, Nian Zhang, Vijay Singh
Nanowire CdS-CdTe solar cells have been fabricated and their reliability was measured in annealing furnace at 120 °C ambient air for 120 hours. The Numerical simulation models were established to simulate measured J-V characteristics of the nanowire solar cells after fabrication and after the 120 hour thermal annealing. Simulation models demonstrate that donor trap concentration in the CdTe layer is increased from 7.2∗1014/cm3 to 7.6∗1014/cm3 after 120 hour annealing. However, acceptor traps in the CdS nanowires maintain identical concentration after 120 hour annealing. Simulation models indicate that donor traps in the CdTe layer mainly contribute to efficiency loss of the nanowire solar cells. Low defect feature of the CdS nanowires plays a role in device reliability.
{"title":"Numerical modeling and simulation of stable nanowire CdS-CdTe solar cells","authors":"Hongmei Dang, E. Ososanya, Nian Zhang, Vijay Singh","doi":"10.1109/NANO.2017.8117357","DOIUrl":"https://doi.org/10.1109/NANO.2017.8117357","url":null,"abstract":"Nanowire CdS-CdTe solar cells have been fabricated and their reliability was measured in annealing furnace at 120 °C ambient air for 120 hours. The Numerical simulation models were established to simulate measured J-V characteristics of the nanowire solar cells after fabrication and after the 120 hour thermal annealing. Simulation models demonstrate that donor trap concentration in the CdTe layer is increased from 7.2∗1014/cm3 to 7.6∗1014/cm3 after 120 hour annealing. However, acceptor traps in the CdS nanowires maintain identical concentration after 120 hour annealing. Simulation models indicate that donor traps in the CdTe layer mainly contribute to efficiency loss of the nanowire solar cells. Low defect feature of the CdS nanowires plays a role in device reliability.","PeriodicalId":292399,"journal":{"name":"2017 IEEE 17th International Conference on Nanotechnology (IEEE-NANO)","volume":"326 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122737884","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 : 2017-07-01DOI: 10.1109/NANO.2017.8117408
Shiqi Guo, A. Arab, S. Krylyuk, A. Davydov, M. Zaghloul
Recent advances in two-dimensional (2D) transition metal dichalcogenides have demonstrated their potential application in chemical sensors. However, the chemical vapor deposition (CVD) grown molybdenum disulfide (MoS2) humidity sensors are still largely unexplored. In this work, MoS2 thin films were grown on 1 cm2 sapphire substrates through sulfurization of e-beam deposited Mo layers. The MoS2 film morphology, thickness, and crystallinity were characterized by AFM and Raman spectroscopy. The two-terminal devices were fabricated with e-beam evaporated interdigitated electrodes (IDEs) on top of the MoS2 surface. The water vapor sensing was tested at various humidity levels with the observed increase in the device resistance response to humidity due to the charge transfer mechanism. We found the devices to be reproducible and with excellent dynamic hysteresis. The sensitivity, fast response and recovery proved that CVD growth MoS2 thin film could be scaled up for humidity and gas sensing applications.
{"title":"Fabrication and characterization of humidity sensors based on CVD grown MoS2 thin film","authors":"Shiqi Guo, A. Arab, S. Krylyuk, A. Davydov, M. Zaghloul","doi":"10.1109/NANO.2017.8117408","DOIUrl":"https://doi.org/10.1109/NANO.2017.8117408","url":null,"abstract":"Recent advances in two-dimensional (2D) transition metal dichalcogenides have demonstrated their potential application in chemical sensors. However, the chemical vapor deposition (CVD) grown molybdenum disulfide (MoS2) humidity sensors are still largely unexplored. In this work, MoS2 thin films were grown on 1 cm2 sapphire substrates through sulfurization of e-beam deposited Mo layers. The MoS2 film morphology, thickness, and crystallinity were characterized by AFM and Raman spectroscopy. The two-terminal devices were fabricated with e-beam evaporated interdigitated electrodes (IDEs) on top of the MoS2 surface. The water vapor sensing was tested at various humidity levels with the observed increase in the device resistance response to humidity due to the charge transfer mechanism. We found the devices to be reproducible and with excellent dynamic hysteresis. The sensitivity, fast response and recovery proved that CVD growth MoS2 thin film could be scaled up for humidity and gas sensing applications.","PeriodicalId":292399,"journal":{"name":"2017 IEEE 17th International Conference on Nanotechnology (IEEE-NANO)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131616470","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 : 2017-07-01DOI: 10.1109/NANO.2017.8117450
Z. Hamlati, M. Azzaz, D. Martinez-Bianco, J. Blanco, P. Gorria
A nanostructured disordered FeAlSn solid solution of Fe-26% Al-2% Sn composition was obtained from elemental Fe, Al and Sn powders using a high-energy ball mill. X-ray diffraction and electron microscopy supported by Mössbauer spectroscopy techniques have been applied to follow changes in the microstructure, phase composition and magnetic properties in dependence on milling time. The transformation of the phase depends upon the milling time. With the increase of milling time all Al and Sn atoms dissolved in the bcc Fe and the final product of the MA process was the nanocrystalline Fe (Al, Sn) solid solution in a metastable state with large amount of defects and mean crystallite size of 5 nm. The electron microscope observations show morphology of powder particles and changes in chemical composition during mechanical treatment. The changes in composition are observed at samples formed by mechanical alloying. On the other hand the composition of Fe72Al26Sn2 pieces is influenced by milling. Magnetic properties of the nanocrystalline mechanically alloyed FeAlSn were also investigated and were related to the microstructural changes.
{"title":"Nanocrystalline and amorphous FeAlSn alloy prepared by mechanical alloying","authors":"Z. Hamlati, M. Azzaz, D. Martinez-Bianco, J. Blanco, P. Gorria","doi":"10.1109/NANO.2017.8117450","DOIUrl":"https://doi.org/10.1109/NANO.2017.8117450","url":null,"abstract":"A nanostructured disordered FeAlSn solid solution of Fe-26% Al-2% Sn composition was obtained from elemental Fe, Al and Sn powders using a high-energy ball mill. X-ray diffraction and electron microscopy supported by Mössbauer spectroscopy techniques have been applied to follow changes in the microstructure, phase composition and magnetic properties in dependence on milling time. The transformation of the phase depends upon the milling time. With the increase of milling time all Al and Sn atoms dissolved in the bcc Fe and the final product of the MA process was the nanocrystalline Fe (Al, Sn) solid solution in a metastable state with large amount of defects and mean crystallite size of 5 nm. The electron microscope observations show morphology of powder particles and changes in chemical composition during mechanical treatment. The changes in composition are observed at samples formed by mechanical alloying. On the other hand the composition of Fe72Al26Sn2 pieces is influenced by milling. Magnetic properties of the nanocrystalline mechanically alloyed FeAlSn were also investigated and were related to the microstructural changes.","PeriodicalId":292399,"journal":{"name":"2017 IEEE 17th International Conference on Nanotechnology (IEEE-NANO)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131645211","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 : 2017-07-01DOI: 10.1109/NANO.2017.8117497
Amoghavarsha Mahadevegowda, C. Johnston, P. Grant
Nylon-6 and Al based nanocomposite films were fabricated via a scalable vacuum co-deposition technique. The relative deposition rates of the constituent phases — nylon-6 (matrix) and Al (filler) — were varied systematically to yield films of different compositions and their dielectric properties, particularly the measured dielectric constants k, were compared with predictions of effective medium expressions. The effect of absorbed water, temperature and heat treatment on k of the nano-films were studied. X-ray photoelectron spectroscopy revealed the presence of an Al-based oxide, which was correlated to the observed enhancement in the dielectric properties of the nanocomposites. The effect of the relative deposition rates of the constituent phases on k and the chemistry of the deposited films fabricated via co-deposition was studied and explained using X-ray photoelectron spectroscopy results.
{"title":"Nylon-6 based nanocomposite films for capacitor applications","authors":"Amoghavarsha Mahadevegowda, C. Johnston, P. Grant","doi":"10.1109/NANO.2017.8117497","DOIUrl":"https://doi.org/10.1109/NANO.2017.8117497","url":null,"abstract":"Nylon-6 and Al based nanocomposite films were fabricated via a scalable vacuum co-deposition technique. The relative deposition rates of the constituent phases — nylon-6 (matrix) and Al (filler) — were varied systematically to yield films of different compositions and their dielectric properties, particularly the measured dielectric constants k, were compared with predictions of effective medium expressions. The effect of absorbed water, temperature and heat treatment on k of the nano-films were studied. X-ray photoelectron spectroscopy revealed the presence of an Al-based oxide, which was correlated to the observed enhancement in the dielectric properties of the nanocomposites. The effect of the relative deposition rates of the constituent phases on k and the chemistry of the deposited films fabricated via co-deposition was studied and explained using X-ray photoelectron spectroscopy results.","PeriodicalId":292399,"journal":{"name":"2017 IEEE 17th International Conference on Nanotechnology (IEEE-NANO)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132289313","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 : 2017-07-01DOI: 10.1109/NANO.2017.8117436
Quan Tao, F. Lan, Minlin Jiang, Guangyong Li
The low selectivity of nanosensors is one of their major obstacles for their wide deployment. To enhance the selectivity, nanosensor array made from zinc oxide (ZnO) nanowires and carbon nanotubes (CNTs) was assembled through dielectrophoresis (DEP). The fabricated nanosensor array was used to detect ammonia (NH3) in a well-controlled environment at room temperature. Because of their opposite material types, ZnO nanowire based sensor behaved oppositely to CNT based sensor. In this study, it is also demonstrated that DC biases can quickly recover both sensing elements. After collecting sensing signals from two transducers under different NH3 concentrations, the concentration of NH3 can be estimated through regression methods. It is shown that quadratic model with the lasso performs well on the collected data.
{"title":"Fabrication, calibration, and recovery of chemical nanosensor array for ammonia detection","authors":"Quan Tao, F. Lan, Minlin Jiang, Guangyong Li","doi":"10.1109/NANO.2017.8117436","DOIUrl":"https://doi.org/10.1109/NANO.2017.8117436","url":null,"abstract":"The low selectivity of nanosensors is one of their major obstacles for their wide deployment. To enhance the selectivity, nanosensor array made from zinc oxide (ZnO) nanowires and carbon nanotubes (CNTs) was assembled through dielectrophoresis (DEP). The fabricated nanosensor array was used to detect ammonia (NH3) in a well-controlled environment at room temperature. Because of their opposite material types, ZnO nanowire based sensor behaved oppositely to CNT based sensor. In this study, it is also demonstrated that DC biases can quickly recover both sensing elements. After collecting sensing signals from two transducers under different NH3 concentrations, the concentration of NH3 can be estimated through regression methods. It is shown that quadratic model with the lasso performs well on the collected data.","PeriodicalId":292399,"journal":{"name":"2017 IEEE 17th International Conference on Nanotechnology (IEEE-NANO)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134187537","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}
Amplitude calibration of the quartz tuning fork (QTF) sensor includes the measurement of the sensitivity factor (αTF). We propose, AFM based methods (cantilever tracking and z-servo tracking of the QTF's amplitude of vibration) to determine the sensitivity factor of the QTF. The QTF is mounted on a xyz-scanner of the AFM and a soft AFM probe is approached on the apex of a tine of the QTF by driving the z-servo and using the normal deflection voltage (Vtb) of position sensitive detector (PSD) as feedback signal. Once the tip contacts the tine, servo is switched off. QTF is electrically excited with a sinusoidal signal from OC4 (Nanonis) and amplitude of the QTF's output at transimpedance amplifier (Vtf) and amplitude of VTB (Vp) is measured by individual lock-in amplifiers which are internally synchronized to the phase of the excitation signal of the QTF. Before, the measurements optical lever is calibrated. By relating the both voltages (Vp & Vtf), sensitivity factor of the QTF (αTF) is determined. In the second approach, after the tip contacts the tine, the z-servo is switched off firstly, then the feedback signal is switched to Vp and frequency sweep for the QTF, Vtb as well as z-servo are started, instantaneously. To keep the Vp at set-point the feedback control moves the z-servo to track the vibration amplitude of the QTF and thus the distance traveled by the z-servo (Δζ) during sweep is equal to the fork's amplitude of vibration (ΔxTF). αtf is determined by relating Δz and VTF. Both approaches can be non-destructively applied for QTF sensor calibration. AFM imaging of the AFM calibration grating TGZ1 (from NT-MDT Russia) has been performed with a calibrated QTF sensor.
{"title":"Amplitude calibration of quartz tuning fork (QTF) force sensor with an atomic force microscope","authors":"Danish Hussain, Hao Zhang, Jianmin Song, Wen Yongbing, Xianghe Meng, F. Xinjian, Hui Xie","doi":"10.1109/NANO.2017.8117406","DOIUrl":"https://doi.org/10.1109/NANO.2017.8117406","url":null,"abstract":"Amplitude calibration of the quartz tuning fork (QTF) sensor includes the measurement of the sensitivity factor (αTF). We propose, AFM based methods (cantilever tracking and z-servo tracking of the QTF's amplitude of vibration) to determine the sensitivity factor of the QTF. The QTF is mounted on a xyz-scanner of the AFM and a soft AFM probe is approached on the apex of a tine of the QTF by driving the z-servo and using the normal deflection voltage (Vtb) of position sensitive detector (PSD) as feedback signal. Once the tip contacts the tine, servo is switched off. QTF is electrically excited with a sinusoidal signal from OC4 (Nanonis) and amplitude of the QTF's output at transimpedance amplifier (Vtf) and amplitude of VTB (Vp) is measured by individual lock-in amplifiers which are internally synchronized to the phase of the excitation signal of the QTF. Before, the measurements optical lever is calibrated. By relating the both voltages (Vp & Vtf), sensitivity factor of the QTF (αTF) is determined. In the second approach, after the tip contacts the tine, the z-servo is switched off firstly, then the feedback signal is switched to Vp and frequency sweep for the QTF, Vtb as well as z-servo are started, instantaneously. To keep the Vp at set-point the feedback control moves the z-servo to track the vibration amplitude of the QTF and thus the distance traveled by the z-servo (Δζ) during sweep is equal to the fork's amplitude of vibration (ΔxTF). αtf is determined by relating Δz and VTF. Both approaches can be non-destructively applied for QTF sensor calibration. AFM imaging of the AFM calibration grating TGZ1 (from NT-MDT Russia) has been performed with a calibrated QTF sensor.","PeriodicalId":292399,"journal":{"name":"2017 IEEE 17th International Conference on Nanotechnology (IEEE-NANO)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115373609","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 : 2017-07-01DOI: 10.1109/NANO.2017.8117271
Keith D. Weiss, L. G. Almeda
Identifying the technology trends, key patents to be aware of, the key players active in the field, the product areas that are heavily patented or scarcely addressed, and the focus of a company's competitors represent crucial aspects of developing a successful strategic plan, determining a company's freedom to make and sell their product, and focusing future research & product development efforts. These areas of concern may be addressed by the creation and analysis of a patent landscape associated with the technology behind a company's product. A process for creating and analyzing a patent landscape is provided using the area of nanomaterials as a case study.
{"title":"Competitive intelligence — Understanding current trends in the patent landscape for nanomaterials","authors":"Keith D. Weiss, L. G. Almeda","doi":"10.1109/NANO.2017.8117271","DOIUrl":"https://doi.org/10.1109/NANO.2017.8117271","url":null,"abstract":"Identifying the technology trends, key patents to be aware of, the key players active in the field, the product areas that are heavily patented or scarcely addressed, and the focus of a company's competitors represent crucial aspects of developing a successful strategic plan, determining a company's freedom to make and sell their product, and focusing future research & product development efforts. These areas of concern may be addressed by the creation and analysis of a patent landscape associated with the technology behind a company's product. A process for creating and analyzing a patent landscape is provided using the area of nanomaterials as a case study.","PeriodicalId":292399,"journal":{"name":"2017 IEEE 17th International Conference on Nanotechnology (IEEE-NANO)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115315271","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 : 2017-07-01DOI: 10.1109/NANO.2017.8117461
Ayesha Shaukat, R. Umer, N. Islam
This paper demonstrates the performance of Carbon Nanotube Field Effect Transistor (CNTFET) in ballistic regime. It shows the effect of dielectric material and oxide thickness on different performance parameters of device like Carrier Injection Velocity (vinj), Drain Induced Barrier Lowering (DIBL), Subthreshold Swing (SS), Transconductance (gm), Output Conductance (gd) and Voltage Gain (Av). The results illustrate that although Silicon dioxide (SiO2) has lowest SS, but still it cannot be used as a dielectric medium in CNTFETs due to high DIBL, lower gm, gd and Av. On the other hand, Zarconium Oxide (ZrO2), Hafnium Oxide (HfO2) and Titanium oxide (TiO2) seem to be better options for dielectric medium of the device. The impact of the said changes is also observed and analyzed in I-V characteristics of the device.
{"title":"Impact of dielectric material and oxide thickness on the performance of Carbon Nanotube Field Effect Transistor","authors":"Ayesha Shaukat, R. Umer, N. Islam","doi":"10.1109/NANO.2017.8117461","DOIUrl":"https://doi.org/10.1109/NANO.2017.8117461","url":null,"abstract":"This paper demonstrates the performance of Carbon Nanotube Field Effect Transistor (CNTFET) in ballistic regime. It shows the effect of dielectric material and oxide thickness on different performance parameters of device like Carrier Injection Velocity (v<inf>inj</inf>), Drain Induced Barrier Lowering (DIBL), Subthreshold Swing (SS), Transconductance (g<inf>m</inf>), Output Conductance (g<inf>d</inf>) and Voltage Gain (Av). The results illustrate that although Silicon dioxide (SiO<inf>2</inf>) has lowest SS, but still it cannot be used as a dielectric medium in CNTFETs due to high DIBL, lower g<inf>m</inf>, g<inf>d</inf> and Av. On the other hand, Zarconium Oxide (ZrO<inf>2</inf>), Hafnium Oxide (HfO<inf>2</inf>) and Titanium oxide (TiO<inf>2</inf>) seem to be better options for dielectric medium of the device. The impact of the said changes is also observed and analyzed in I-V characteristics of the device.","PeriodicalId":292399,"journal":{"name":"2017 IEEE 17th International Conference on Nanotechnology (IEEE-NANO)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123327570","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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