2010 IEEE Nanotechnology Materials and Devices Conference最新文献_第6页

Analysis of the impact of particle separation in a plasmonic spherical dimer on the resonance wavelength 等离子体球形二聚体中粒子分离对共振波长的影响分析

2010 IEEE Nanotechnology Materials and Devices Conference Pub Date : 2010-12-03 DOI: 10.1109/NMDC.2010.5652103

S. Smaili, Y. Massoud

引用次数: 0

Optical pH regulation using photochromic material for selective cell injection of nanosensors 光致变色材料用于纳米传感器选择性细胞注射的光学pH调节

2010 IEEE Nanotechnology Materials and Devices Conference Pub Date : 2010-12-03 DOI: 10.1109/NMDC.2010.5652526

H. Maruyama, N. Inoue, F. Arai

{"title":"Optical pH regulation using photochromic material for selective cell injection of nanosensors","authors":"H. Maruyama, N. Inoue, F. Arai","doi":"10.1109/NMDC.2010.5652526","DOIUrl":"https://doi.org/10.1109/NMDC.2010.5652526","url":null,"abstract":"We developed Optical pH regulation using gel tool impregnated with photochromic material for selective cell injection of nanosensor for intracellular measurement. The nanosensor was included in the fusogenic liposome. Membrane fusion of the liposome to the cell membrane was used for invasive cell injection of the nanosensor. The liposome fuses to the cell in weak acidic condition. Local pH regulation inside the liposome was developed using photochromic material included in the nanotool. The nanosensor was modified by fluorescent dye for environment measurement. The nanosensor was also modified by Leuco crystal violet (LCV). LCV is photochromic material. LCV emits the proton by ultraviolet (UV) illumination. The emitted proton decreases the pH value in the liposome. This pH regulation is reversible by UV/VIS illumination. The nanosensor included in the liposome was manipulated by optical tweezers. After contact of the liposome to the cell membrane, the liposome was adhered to the cell membrane by UV induced membrane fusion. The nanosensor was injected into the cell. Injected nanosensor was manipulated by optical tweezers. Intracellular temperature was detected by measuring the fluorescence intensity of the nanosensor. We demonstrated optical pH regulation, UV induced cell injection of the nanosensor, and manipulation of the nanosensor in the cell.","PeriodicalId":423557,"journal":{"name":"2010 IEEE Nanotechnology Materials and Devices Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130571952","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}

引用次数: 0

AFM tip on-line positioning by using the landmark in nano-manipulation 在纳米操作中利用标记进行原子力显微镜尖端在线定位

2010 IEEE Nanotechnology Materials and Devices Conference Pub Date : 2010-12-03 DOI: 10.1109/NMDC.2010.5651954

S. Yuan, Lianqing Liu, Zhidong Wang, N. Xi, Yuechao Wang, Z. Dong, Zhiyu Wang

引用次数: 8

The effect of heat treatment on flexibility of silver nanopaste circuit screen-printed on polyimide 热处理对聚酰亚胺上纳米银丝网印刷柔性的影响

2010 IEEE Nanotechnology Materials and Devices Conference Pub Date : 2010-12-03 DOI: 10.1109/NMDC.2010.5652445

Kwang-Seok Kim, Young-Chul Lee, J. Ahn, Seung-Boo Jung

{"title":"The effect of heat treatment on flexibility of silver nanopaste circuit screen-printed on polyimide","authors":"Kwang-Seok Kim, Young-Chul Lee, J. Ahn, Seung-Boo Jung","doi":"10.1109/NMDC.2010.5652445","DOIUrl":"https://doi.org/10.1109/NMDC.2010.5652445","url":null,"abstract":"We evaluated the flexibility of screen-printed silver (Ag) circuits under various sintering temperatures. The circuits were built on a polyimide (PI) film by a screen printing technique using Ag nanopaste (73 wt%, 24 nm in diameter, Ag nanoparticles). The sintering temperature was raised from 150 to 300 °C while the sintering time was fixed at 30 min. The flexibility was measured by two different kinds of methods; Massachussets Institute of Technology (MIT) type folding endurance test, and Institute for Interconnecting and Packaging Electronic Circuits (IPC) flexural resistance endurance test. In order to measure the flexibility of Ag circuits under various sintering temperatures, the changes of electrical resistance were observed while the printed Ag circuits were being folded or slid. The circuits sintered at higher temperatures needed more sliding and folding cycles to reach the critical point: while the sintering temperature increased from 150 °C to 300 °C, the flexibility decreased by around 90 % and 75 % after the IPC sliding process, and MIT folding process, respectively. The results showed that the flexibility of printed circuits was affected by the microstructural changes depending on the sintering temperature.","PeriodicalId":423557,"journal":{"name":"2010 IEEE Nanotechnology Materials and Devices Conference","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130600977","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}

引用次数: 2

Sphere-on-pillar optical nano-antennas 球形柱上光学纳米天线

2010 IEEE Nanotechnology Materials and Devices Conference Pub Date : 2010-12-03 DOI: 10.1109/NMDC.2010.5652241

X. Cui, Zheng Fan, X. Tao, Weihua Zhang, D. Erni, Xudong Fan, Xiaobin Zhang, Lixin Dong

{"title":"Sphere-on-pillar optical nano-antennas","authors":"X. Cui, Zheng Fan, X. Tao, Weihua Zhang, D. Erni, Xudong Fan, Xiaobin Zhang, Lixin Dong","doi":"10.1109/NMDC.2010.5652241","DOIUrl":"https://doi.org/10.1109/NMDC.2010.5652241","url":null,"abstract":"We propose an optical nano-antenna consisting of a pair of sphere-on-pillar structures. Experiments show that the controlled fabrication of metallic nanospheres on the tip of carbon nanotubes (CNTs) is effective, and numerical investigation revealed that a pair of such structures are capable to convert free space radiation into an intense near-field; hence can function as an optical antenna. The fabrication process, electron-beam-induced bubbling (EBIB) and electromigration-based bubbling (EMBB), are based on nanofluidic mass delivery at the attogram scale using metal-filled CNTs. Under the irradiation of a high energy electron beam of a transmission electron microscope (TEM), the encapsulated metal is melted and extruded out from the tip of the nanotube; generating a metallic sphere. In the case that the encapsulated materials inside the CNT have a higher melting point than that of the beam energy can reach, electromigration-based mass delivery is an optional process to apply. Under a low bias (2–2.5V), spherical nanoparticles are formed on the tips of nanotubes. The optical properties of the nano-antenna are analyzed numerically using the finite element method. Our investigations have revealed that the field enhancement, the resonances, and the radiation patterns can be easily tuned since all these quantities strongly depend on the size of the nanotubes and the metallic spheres, as well as on their material properties. Sphere-on-pillar optical antennas carry a great potential for bio-sensing, tip-enhanced spectroscopy applications, and interfacing integrated nanophotonic circuits.","PeriodicalId":423557,"journal":{"name":"2010 IEEE Nanotechnology Materials and Devices Conference","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116031518","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}

引用次数: 2

Analysis and design of carbon nanotube based field effect transistors for nano infrared sensors 纳米红外传感器用碳纳米管场效应晶体管的分析与设计

2010 IEEE Nanotechnology Materials and Devices Conference Pub Date : 2010-12-03 DOI: 10.1109/NMDC.2010.5652169

Hongzhi Chen, N. Xi, K. Lai, C. Fung, Liangliang Chen, Jianyong Lou

{"title":"Analysis and design of carbon nanotube based field effect transistors for nano infrared sensors","authors":"Hongzhi Chen, N. Xi, K. Lai, C. Fung, Liangliang Chen, Jianyong Lou","doi":"10.1109/NMDC.2010.5652169","DOIUrl":"https://doi.org/10.1109/NMDC.2010.5652169","url":null,"abstract":"It has been demonstrated that carbon nanotube field effect transistor (CNTFET) is a promising device to improve the performance of carbon nanotube (CNT) infrared (IR) sensors by modulating the doping level of the CNT channel. However, how to optimize the performance of the CNTFET based IR sensor is not well understood. In particularly, there was limited study on the design of transistor's gate structure, which determines its energy band profile. In order to improve our understating of its detection mechanism and guide for an optimized design, a multi-gate CNTFET was fabricated, which can control the doping level of the source, drain and nanotube channel independently. Photovoltaic characteristics were observed in bias dependent measurement by varying the intensity of incident IR source. In addition, the polarization dependent measurement was conducted, the detector showed clearly polarization anisotropy, and highest photocurrent was obtained when the polarization is parallel to the nanotube. Its temporal photocurrent responses using different gates were investigated. The results showed that photocurrent had similar photo-responses by applying voltages to the gates at different positions, implying the sensor design can be simplified into a single gate.","PeriodicalId":423557,"journal":{"name":"2010 IEEE Nanotechnology Materials and Devices Conference","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124688213","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}

引用次数: 4

Cellular tensegrity modeling with Atomic Force Microscopy (AFM) experimentation 细胞张拉整体模型与原子力显微镜(AFM)实验

2010 IEEE Nanotechnology Materials and Devices Conference Pub Date : 2010-12-03 DOI: 10.1109/NMDC.2010.5652145

Ruiguo Yang, N. Xi, C. Fung, K. Seiffert-Sinha, K. Lai, Bo Song, A. Sinha

{"title":"Cellular tensegrity modeling with Atomic Force Microscopy (AFM) experimentation","authors":"Ruiguo Yang, N. Xi, C. Fung, K. Seiffert-Sinha, K. Lai, Bo Song, A. Sinha","doi":"10.1109/NMDC.2010.5652145","DOIUrl":"https://doi.org/10.1109/NMDC.2010.5652145","url":null,"abstract":"Cell tensegrity model has been widely accepted as a qualitative and recently quantitative method to describe the cellular mechanics. It is based on the fact the cell body is an inhomogeneous cytoskeleton based structure bounded by a soft membrane. Cell establishes force balance under certain structural arrangement through its focal adhesions and intercellular adhesions, under which the prestress is the main factor in determining the cell mechanical property as a whole. Here we demonstrate that intercellular adhesion is one of the main mechanisms employed by epithelial cells to achieve balance. We use keratinocytes as the model system to study this cellular behavior. It is found that loss of intercellular adhesion by desmosome disruption will cause the structural rearrangement of the cytoskeleton and subsequently lower the prestress in the whole cytoskeletal structure, thus change the mechanical property, in this case decrease of stiffness. The loss of intercellular adhesion causes was achieved by three different mechanisms either biochemical or biomechan-ical. Biochemically, antibody binding and calcium depletion would cause the disruption or non-formation of desmosome, which leads to loss of welding point of intermediate filaments. Biomechanically, intermediate filaments bundles were cut off by Atomic Force Microscopy (AFM) based nanodissection. All these mechanisms verified that the cell stiffness drop after intercellular adhesion loss. Further, simulation results by a 6-strut tensegrity structure with or without intermediate filaments confirmed the experimental findings, where structures with intermediate filaments are stiffer overall. This study would significantly enhance our understanding of the cell cytoskeleton mechanics.","PeriodicalId":423557,"journal":{"name":"2010 IEEE Nanotechnology Materials and Devices Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117121423","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}

引用次数: 1

Reversible suppression of Coulomb staircase in InP nanowires with light illumination 光照下InP纳米线中库仑阶梯的可逆抑制

2010 IEEE Nanotechnology Materials and Devices Conference Pub Date : 2010-12-03 DOI: 10.1109/NMDC.2010.5652579

Hidenori Yamada, Toshishige Yamada, A. Lohn, N. Kobayashi

引用次数: 0

A security system for monitoring trespass in an environment with obstacles 在有障碍物的环境中监视非法侵入的安全系统

2010 IEEE Nanotechnology Materials and Devices Conference Pub Date : 2010-12-03 DOI: 10.1109/NMDC.2010.5652348

Tetsuhiro Maruyama, M. Hoguro, R. Taguchi, T. Umezaki

{"title":"A security system for monitoring trespass in an environment with obstacles","authors":"Tetsuhiro Maruyama, M. Hoguro, R. Taguchi, T. Umezaki","doi":"10.1109/NMDC.2010.5652348","DOIUrl":"https://doi.org/10.1109/NMDC.2010.5652348","url":null,"abstract":"We are developing the security system for detecting and notifying a trespass. This system doesn't need security staffs because the trespass is detected by the automatic operation, and it notifies via e-mail. The trespass is detected by the time-varying image processing. In the existing methods of a moving object detection using image recognition technology, they have processed an obtained whole image, and have detected a moving object in a picture. However, when a moving portion in the scene is hidden by some obstacles, the recognition of a moving object is sometimes difficult. In this study, we present a novel method of discriminating moving objects, such as a human or a vehicle. We use only a narrow and tall area of the video called Slit Frame Image to detect moving portions. By using this method, we are able to obtain the patterns of moving objects while avoiding the obstacles in a picture. Then we classify them by DP matching against previously registered reference patterns in the database of all possible classes (human, bicycle, car, and bus). In this paper, we compare several variations of an algorithm used to detect and classify objects passing laterally in front of a security camera. Non-homogeneity of people's patterns and their subsequent frequent misclassification is addressed by not producing reference patterns of people, and differentiating them from correctly classified bicycles by the DP distance to the first candidate.","PeriodicalId":423557,"journal":{"name":"2010 IEEE Nanotechnology Materials and Devices Conference","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127008858","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}

引用次数: 2

Studying the effect of core displacement on the resonance wavelength of a nanoegg 研究了磁芯位移对纳米蛋共振波长的影响

2010 IEEE Nanotechnology Materials and Devices Conference Pub Date : 2010-12-03 DOI: 10.1109/NMDC.2010.5652085

S. Smaili, Y. Massoud

引用次数: 0