首页 > 最新文献

International journal of micro-nano scale transport最新文献

英文 中文
Mathematical Modeling of Red Blood Cells Squeezing through Micro-capillaries and the Effect of Malaria Infection 红细胞通过微血管挤压的数学模型和疟疾感染的影响
Pub Date : 2010-12-01 DOI: 10.1260/1759-3093.1.4.351
Priyank Gullipalli, Sarit K. Das
Red Blood Cells (RBCs) when infected by Malaria Parasites have altogether a different set of structural, biochemical and biophysical properties. These changes have drastic effects on the flow of these oxygen carrying cells in our body. The change in the biophysical parameters like the stiffness of the membrane is obtained experimentally and is available in the literature. The motion of the RBCs has been observed under the infected conditions. The RBCs becoming spherocytic, develops finger-like structures on its membrane which are observed but could not be analyzed as measurement at such small scale is extremely difficult. Hence, a computational model to replicate such motion is very essential for knowing the biophysical phenomena at such small scale. To overcome this limitation, a model has been developed for RBCs in the present study to simulate their flow under different conditions with or without infection computationally. This model successfully predicts the phenomena occurring in the flow of the RBCs...
被疟疾寄生虫感染的红细胞具有一整套完全不同的结构、生化和生物物理特性。这些变化对我们体内携带氧气的细胞的流动产生了巨大的影响。生物物理参数的变化,如膜的刚度,是通过实验得到的,也可以在文献中找到。观察了红细胞在感染条件下的运动。红细胞变成球形,在其膜上形成手指状结构,这些结构可以观察到,但无法分析,因为在如此小的尺度下测量是非常困难的。因此,一个能够复制这种运动的计算模型对于了解如此小尺度的生物物理现象是非常必要的。为了克服这一限制,本研究开发了一个红细胞模型,以计算模拟红细胞在不同条件下的流动,无论有无感染。这个模型成功地预测了红细胞流动中发生的现象。
{"title":"Mathematical Modeling of Red Blood Cells Squeezing through Micro-capillaries and the Effect of Malaria Infection","authors":"Priyank Gullipalli, Sarit K. Das","doi":"10.1260/1759-3093.1.4.351","DOIUrl":"https://doi.org/10.1260/1759-3093.1.4.351","url":null,"abstract":"Red Blood Cells (RBCs) when infected by Malaria Parasites have altogether a different set of structural, biochemical and biophysical properties. These changes have drastic effects on the flow of these oxygen carrying cells in our body. The change in the biophysical parameters like the stiffness of the membrane is obtained experimentally and is available in the literature. The motion of the RBCs has been observed under the infected conditions. The RBCs becoming spherocytic, develops finger-like structures on its membrane which are observed but could not be analyzed as measurement at such small scale is extremely difficult. Hence, a computational model to replicate such motion is very essential for knowing the biophysical phenomena at such small scale. To overcome this limitation, a model has been developed for RBCs in the present study to simulate their flow under different conditions with or without infection computationally. This model successfully predicts the phenomena occurring in the flow of the RBCs...","PeriodicalId":89942,"journal":{"name":"International journal of micro-nano scale transport","volume":"1 1","pages":"351-362"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66151397","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
Gate Current Modeling and Optimization of High-k Gate Stack MOSFET Structure in Nano Scale Regime 纳米尺度下高k栅极堆叠MOSFET结构的栅极电流建模与优化
Pub Date : 2010-09-01 DOI: 10.1260/1759-3093.1.3.253
A. Rana, N. Chand, V. Kapoor
In this paper, an analytical model has been developed for gate tunneling current in nano scale MOSFET with high-k dielectric stack as gate insulator. A computationally efficient model for gate tunneling current through different high-k gate stack structure is presented. The proposed model has been successfully used for different gate stack dielectric simply by adjusting two fitting parameters. The model predictions are compared with the two-dimensional Santaurus device simulation. Good agreement between the model predictions and device simulation results has been obtained. The effects of interfacial oxide thickness, type of gate stack and reverse gate stack on the gate tunneling current have also been studied as a function of gate voltages for a given equivalent oxide thickness (EOT) of 1.0 nm. It was also shown that smaller inter oxide layer thickness reduces gate leakages current with the introduction of high-k gate stack structure in place of individual high-k dielectric or SiO2.
本文建立了以高k介电层为栅极绝缘体的纳米MOSFET栅极隧穿电流的解析模型。提出了一种计算效率高的栅极隧穿电流通过不同高k栅极堆叠结构的模型。该模型通过调整两个拟合参数,成功地应用于不同栅极堆介电条件下。将模型预测结果与二维Santaurus装置模拟结果进行了比较。模型预测结果与器件仿真结果吻合较好。在等效氧化层厚度(EOT)为1.0 nm时,研究了界面氧化层厚度、栅极堆类型和反向栅极堆对栅极隧穿电流的影响以及栅极电压的函数关系。通过引入高k栅极堆叠结构来代替单独的高k介电介质或SiO2,较小的氧化间层厚度可以减小栅极漏电流。
{"title":"Gate Current Modeling and Optimization of High-k Gate Stack MOSFET Structure in Nano Scale Regime","authors":"A. Rana, N. Chand, V. Kapoor","doi":"10.1260/1759-3093.1.3.253","DOIUrl":"https://doi.org/10.1260/1759-3093.1.3.253","url":null,"abstract":"In this paper, an analytical model has been developed for gate tunneling current in nano scale MOSFET with high-k dielectric stack as gate insulator. A computationally efficient model for gate tunneling current through different high-k gate stack structure is presented. The proposed model has been successfully used for different gate stack dielectric simply by adjusting two fitting parameters. The model predictions are compared with the two-dimensional Santaurus device simulation. Good agreement between the model predictions and device simulation results has been obtained. The effects of interfacial oxide thickness, type of gate stack and reverse gate stack on the gate tunneling current have also been studied as a function of gate voltages for a given equivalent oxide thickness (EOT) of 1.0 nm. It was also shown that smaller inter oxide layer thickness reduces gate leakages current with the introduction of high-k gate stack structure in place of individual high-k dielectric or SiO2.","PeriodicalId":89942,"journal":{"name":"International journal of micro-nano scale transport","volume":"1 1","pages":"253-268"},"PeriodicalIF":0.0,"publicationDate":"2010-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66151336","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
Numerical Simulations of Non-equilibrium Energy Transport in Nanostructures using Boltzmann Transport Equation 基于玻尔兹曼输运方程的纳米结构非平衡能量输运数值模拟
Pub Date : 2010-09-01 DOI: 10.1260/1759-3093.1.3.189
A. Pattamatta
Heat transfer in nanostructures differ significantly from that in the bulk materials since the characteristic length scales associated with heat carriers, i.e., the mean free path and the wavelength, are comparable to the characteristic length of the nanostructures. Nanostructure materials hold the promise of novel phenomena, properties, and functions in the areas of thermoelectric energy conversion and micro/nano electronic devices. One of the major challenges in micro/nano electronic devices is to study the ‘hot spot’ generation by accurately modeling the carrier-optical phonon-acoustic phonon interactions. Thermoelectric properties are among the properties that may drastically change at nanoscale. During the last decade, advances have been made in increasing the efficiency of thermoelectric energy conversion using nanostructures. In this paper, the non-equilibrium interaction between carriers and phonons in semiconductor thin films is modeled using the Boltzmann transport model (BTM) for studying the t...
由于与热载体相关的特征长度尺度(即平均自由程和波长)与纳米结构的特征长度相当,因此纳米结构中的传热与块体材料中的传热有很大不同。纳米结构材料在热电能量转换和微纳米电子器件领域具有新的现象、特性和功能。通过精确模拟载流子-光声子-声子相互作用来研究“热点”的产生是微纳电子器件面临的主要挑战之一。热电性质是在纳米尺度上可能发生巨大变化的性质之一。在过去的十年中,利用纳米结构在提高热电能量转换效率方面取得了进展。本文利用玻尔兹曼输运模型(BTM)研究了半导体薄膜中载流子与声子的非平衡相互作用。
{"title":"Numerical Simulations of Non-equilibrium Energy Transport in Nanostructures using Boltzmann Transport Equation","authors":"A. Pattamatta","doi":"10.1260/1759-3093.1.3.189","DOIUrl":"https://doi.org/10.1260/1759-3093.1.3.189","url":null,"abstract":"Heat transfer in nanostructures differ significantly from that in the bulk materials since the characteristic length scales associated with heat carriers, i.e., the mean free path and the wavelength, are comparable to the characteristic length of the nanostructures. Nanostructure materials hold the promise of novel phenomena, properties, and functions in the areas of thermoelectric energy conversion and micro/nano electronic devices. One of the major challenges in micro/nano electronic devices is to study the ‘hot spot’ generation by accurately modeling the carrier-optical phonon-acoustic phonon interactions. Thermoelectric properties are among the properties that may drastically change at nanoscale. During the last decade, advances have been made in increasing the efficiency of thermoelectric energy conversion using nanostructures. In this paper, the non-equilibrium interaction between carriers and phonons in semiconductor thin films is modeled using the Boltzmann transport model (BTM) for studying the t...","PeriodicalId":89942,"journal":{"name":"International journal of micro-nano scale transport","volume":"1 1","pages":"189-218"},"PeriodicalIF":0.0,"publicationDate":"2010-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66151285","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
Molecular Dynamics Simulation of Interfacial Phenomena in Two-Phase Flow: A Review 两相流界面现象的分子动力学模拟研究进展
Pub Date : 2010-09-01 DOI: 10.1260/1759-3093.1.3.219
S. Jesseela, C. Sobhan
An attractive feature of the application of Molecular Dynamics (MD) simulation to the liquid-vapor interface in two-phase flow is that the method, well suited for the small length-scale region which may be size-affected, can be applied in multi-scale modeling together with continuum approach for the rest of the domain. Various studies have been reported in literature where the method has been utilized to analyze the interfacial regions in two-phase flow systems. In this article, the major investigations involving Molecular Dynamics analysis applied to interfacial phenomena in two phase flow and heat transfer systems are reviewed, with a focus on the thermodynamic, fluid dynamic and structural properties of the liquid-vapor interface. Discussions on the nature and premises of the reported work and a compilation of the salient features and major results are presented.
分子动力学(MD)方法应用于两相流液气界面模拟的一个吸引人的特点是,该方法非常适合于可能受尺寸影响的小长度尺度区域,可以与连续介质方法一起应用于多尺度建模。文献中已经报道了各种研究,其中该方法已被用于分析两相流系统的界面区域。本文综述了分子动力学分析应用于两相流动和传热系统界面现象的主要研究进展,重点介绍了液-汽界面的热力学、流体动力学和结构特性。讨论了所报告工作的性质和前提,并汇编了突出特点和主要成果。
{"title":"Molecular Dynamics Simulation of Interfacial Phenomena in Two-Phase Flow: A Review","authors":"S. Jesseela, C. Sobhan","doi":"10.1260/1759-3093.1.3.219","DOIUrl":"https://doi.org/10.1260/1759-3093.1.3.219","url":null,"abstract":"An attractive feature of the application of Molecular Dynamics (MD) simulation to the liquid-vapor interface in two-phase flow is that the method, well suited for the small length-scale region which may be size-affected, can be applied in multi-scale modeling together with continuum approach for the rest of the domain. Various studies have been reported in literature where the method has been utilized to analyze the interfacial regions in two-phase flow systems. In this article, the major investigations involving Molecular Dynamics analysis applied to interfacial phenomena in two phase flow and heat transfer systems are reviewed, with a focus on the thermodynamic, fluid dynamic and structural properties of the liquid-vapor interface. Discussions on the nature and premises of the reported work and a compilation of the salient features and major results are presented.","PeriodicalId":89942,"journal":{"name":"International journal of micro-nano scale transport","volume":"1 1","pages":"219-244"},"PeriodicalIF":0.0,"publicationDate":"2010-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66151297","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
A Numerical Approach for Estimating the Entropy Generation in Flat Heat Pipes 一种估算平面热管中熵产的数值方法
Pub Date : 2010-06-29 DOI: 10.1260/1759-3093.1.2.169
P. Kumar, C. Muraleedharan
Heat Pipe is a thermodynamic device which transports heat from one location to another with a very small temperature drop. Entropy generation can be considered as a significant parameter on heat pipe performance. Major reasons for entropy generation in a heat pipe system are temperature difference between cold and hot reservoirs, frictional losses in the working fluid flows and vapor temperature/pressure drop along heat pipe. The objective of the present work is to estimate the entropy generation in a flat heat pipe. A computational model is developed for the analysis of the transient operation of a flat heat pipe. The analysis involves the solution of two dimensional continuity, momentum and energy equations in the vapor core with the transport equations for a porous medium in the wick. The entropy generation depends on both temperature and velocity variations of vapor and liquid. Alternating Direction Implicit (ADI) scheme is used to convert the partial differential equations into finite difference equa...
热管是一种热力学装置,它以很小的温度降将热量从一个地方输送到另一个地方。熵产是影响热管性能的一个重要参数。热管系统中产生熵的主要原因是冷热储层之间的温差、工作流体流动中的摩擦损失和热管沿线的蒸汽温度/压降。本文的目的是估计平面热管中的熵产。建立了平板热管瞬态运行分析的计算模型。该分析涉及到用芯内多孔介质的输运方程求解蒸汽芯内的二维连续性、动量和能量方程。熵的产生取决于蒸汽和液体的温度和速度变化。采用交替方向隐式(ADI)格式将偏微分方程转化为有限差分方程。
{"title":"A Numerical Approach for Estimating the Entropy Generation in Flat Heat Pipes","authors":"P. Kumar, C. Muraleedharan","doi":"10.1260/1759-3093.1.2.169","DOIUrl":"https://doi.org/10.1260/1759-3093.1.2.169","url":null,"abstract":"Heat Pipe is a thermodynamic device which transports heat from one location to another with a very small temperature drop. Entropy generation can be considered as a significant parameter on heat pipe performance. Major reasons for entropy generation in a heat pipe system are temperature difference between cold and hot reservoirs, frictional losses in the working fluid flows and vapor temperature/pressure drop along heat pipe. The objective of the present work is to estimate the entropy generation in a flat heat pipe. A computational model is developed for the analysis of the transient operation of a flat heat pipe. The analysis involves the solution of two dimensional continuity, momentum and energy equations in the vapor core with the transport equations for a porous medium in the wick. The entropy generation depends on both temperature and velocity variations of vapor and liquid. Alternating Direction Implicit (ADI) scheme is used to convert the partial differential equations into finite difference equa...","PeriodicalId":89942,"journal":{"name":"International journal of micro-nano scale transport","volume":"1 1","pages":"159-170"},"PeriodicalIF":0.0,"publicationDate":"2010-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1260/1759-3093.1.2.169","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66151222","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
Anomalous size dependent rheological behavior of alumina based nanofluids 氧化铝基纳米流体的异常尺寸依赖性流变行为
Pub Date : 2010-06-29 DOI: 10.1260/1759-3093.1.2.179
P. Singh, K. Anoop, Hrishikesh E. Patel, T. Sundararajan, T. Pradeep, Sarit K. Das
Rheological characteristics of alumina (Al 2 O 3 ) nanofluids (NFs) were found to exhibit an unexpected behavior. Two base-fluids viz, water and ethylene glycols (EG) with particles of average diameter of 11, 45 and 150 nm were examined. An anomalous reduction in viscosity compared to that of the base fluid was seen for EG based NFs. However, viscosity reduction was absent in water based NFs. The inter-related effects of particle size, concentration and mode of dispersion (mono or poly-dispersed) were investigated. Particle migration under shear is attributed to the reduction of viscosity. The increase in bulk viscosity with particle size reduction is attributed to the surface forces acting between the particles and the medium in a suspension and the increase of effective volume with size.
氧化铝(al2o3)纳米流体(NFs)的流变特性被发现表现出意想不到的行为。研究了两种基础流体,即水和乙二醇(EG),它们的平均直径分别为11、45和150 nm。与基液相比,EG基NFs的粘度异常降低。然而,在水基NFs中没有粘度降低。研究了粒径、浓度和分散方式(单分散或多分散)的相互影响。剪切作用下的颗粒迁移归因于粘度的降低。体积粘度随粒径的减小而增加是由于悬浮体中颗粒与介质之间的表面作用力以及有效体积随粒径的增大而增加。
{"title":"Anomalous size dependent rheological behavior of alumina based nanofluids","authors":"P. Singh, K. Anoop, Hrishikesh E. Patel, T. Sundararajan, T. Pradeep, Sarit K. Das","doi":"10.1260/1759-3093.1.2.179","DOIUrl":"https://doi.org/10.1260/1759-3093.1.2.179","url":null,"abstract":"Rheological characteristics of alumina (Al 2 O 3 ) nanofluids (NFs) were found to exhibit an unexpected behavior. Two base-fluids viz, water and ethylene glycols (EG) with particles of average diameter of 11, 45 and 150 nm were examined. An anomalous reduction in viscosity compared to that of the base fluid was seen for EG based NFs. However, viscosity reduction was absent in water based NFs. The inter-related effects of particle size, concentration and mode of dispersion (mono or poly-dispersed) were investigated. Particle migration under shear is attributed to the reduction of viscosity. The increase in bulk viscosity with particle size reduction is attributed to the surface forces acting between the particles and the medium in a suspension and the increase of effective volume with size.","PeriodicalId":89942,"journal":{"name":"International journal of micro-nano scale transport","volume":"1 1","pages":"179-188"},"PeriodicalIF":0.0,"publicationDate":"2010-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66151237","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: 8
Integration of Microfluidic Capabilities into Micromachined Neural Implants 微流体功能集成到微机械神经植入物中
Pub Date : 2010-06-29 DOI: 10.1260/1759-3093.1.2.139
T. Stieglitz
Several approaches for micromachined neural implants have been established worldwide to deliver neuroscientific tools to investigate the function of the brain. Bioelectrical signals of single cells as well as of synaptic background activity have been recorded via multichannel electrode systems and the effect of electrical stimulation has been used to treat diseases or to partially restore sensory functions. However, the brain does not work only electrically but chemical and electrical signals strongly interact. Therefore, chemical analysis of the metabolism of the brain and neurotransmitters is of high interest as well as delivery of chemical substances to modify signal transduction and generation in the brain. This article presents existing micromachining approaches of electrical neural probes for intracortical recording and microfluidic channels, pumps and valves to realize drug delivery and probe sampling. Application scenarios will be discussed with respect to the opportunities and limitations of the ...
世界各地已经建立了几种微机械神经植入物的方法,以提供神经科学工具来研究大脑的功能。单细胞和突触背景活动的生物电信号已通过多通道电极系统被记录下来,电刺激的效果已被用于治疗疾病或部分恢复感觉功能。然而,大脑不仅仅是电的工作,化学信号和电信号也强烈地相互作用。因此,对大脑和神经递质代谢的化学分析以及化学物质的传递来改变大脑中的信号转导和产生具有很高的兴趣。本文介绍了现有的用于皮层内记录的电神经探针和用于药物输送和探针取样的微流体通道、泵和阀的微加工方法。应用场景将根据…的机会和限制进行讨论。
{"title":"Integration of Microfluidic Capabilities into Micromachined Neural Implants","authors":"T. Stieglitz","doi":"10.1260/1759-3093.1.2.139","DOIUrl":"https://doi.org/10.1260/1759-3093.1.2.139","url":null,"abstract":"Several approaches for micromachined neural implants have been established worldwide to deliver neuroscientific tools to investigate the function of the brain. Bioelectrical signals of single cells as well as of synaptic background activity have been recorded via multichannel electrode systems and the effect of electrical stimulation has been used to treat diseases or to partially restore sensory functions. However, the brain does not work only electrically but chemical and electrical signals strongly interact. Therefore, chemical analysis of the metabolism of the brain and neurotransmitters is of high interest as well as delivery of chemical substances to modify signal transduction and generation in the brain. This article presents existing micromachining approaches of electrical neural probes for intracortical recording and microfluidic channels, pumps and valves to realize drug delivery and probe sampling. Application scenarios will be discussed with respect to the opportunities and limitations of the ...","PeriodicalId":89942,"journal":{"name":"International journal of micro-nano scale transport","volume":"1 1","pages":"139-158"},"PeriodicalIF":0.0,"publicationDate":"2010-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66151179","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
Ballistic Electron Transport Through Au/TiOPc/GaAs and Au/HBC/GaAs Diodes Au/TiOPc/GaAs和Au/HBC/GaAs二极管的弹道电子输运
Pub Date : 2010-06-29 DOI: 10.1260/1759-3093.1.2.171
S. Özcan, M. Chiesa
The understanding of charge transport through metal-organic and/or organic-semiconductor interfaces plays a significant role in the further development and improvement of molecular electronics. This paper presents a theoretical investigation of hot electron transport through organic films grown on GaAs. Ballistic electron transport through Au/TiOPc/GaAs and Au/HBC/GaAs is described by means of the Bell-Kaiser model. Good agreement between experimental results and the prediction of the heterostructure extension of the Bell-Kaiser model is reported showing that the Bell-Kaiser model extension can be used to describe the hot electron transport through metal-organic-semiconductor nanostructures.
了解电荷通过金属-有机和/或有机-半导体界面的传输对分子电子学的进一步发展和改进起着重要的作用。本文从理论上研究了在砷化镓上生长的有机薄膜的热电子传递。利用Bell-Kaiser模型描述了Au/TiOPc/GaAs和Au/HBC/GaAs的弹道电子输运。实验结果与Bell-Kaiser模型异质结构外延的预测结果吻合较好,表明Bell-Kaiser模型外延可以用来描述金属-有机-半导体纳米结构中的热电子输运。
{"title":"Ballistic Electron Transport Through Au/TiOPc/GaAs and Au/HBC/GaAs Diodes","authors":"S. Özcan, M. Chiesa","doi":"10.1260/1759-3093.1.2.171","DOIUrl":"https://doi.org/10.1260/1759-3093.1.2.171","url":null,"abstract":"The understanding of charge transport through metal-organic and/or organic-semiconductor interfaces plays a significant role in the further development and improvement of molecular electronics. This paper presents a theoretical investigation of hot electron transport through organic films grown on GaAs. Ballistic electron transport through Au/TiOPc/GaAs and Au/HBC/GaAs is described by means of the Bell-Kaiser model. Good agreement between experimental results and the prediction of the heterostructure extension of the Bell-Kaiser model is reported showing that the Bell-Kaiser model extension can be used to describe the hot electron transport through metal-organic-semiconductor nanostructures.","PeriodicalId":89942,"journal":{"name":"International journal of micro-nano scale transport","volume":"1 1","pages":"171-178"},"PeriodicalIF":0.0,"publicationDate":"2010-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66151226","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
Transport of flexible molecules in narrow confinements 柔性分子在狭窄范围内的传输
Pub Date : 2010-06-29 DOI: 10.1260/1759-3093.1.2.97
Siddhartha Das, S. Chakraborty
Dynamical characteristics of flexible polymer molecules in nanoscopic confinements are primarily dictated by the relative values of the confinement length scales with respect to the polymer persistence length. Depending on whether the channel height is larger [1] or smaller [2] than the polymer persistence length, altogether different polymer dynamics is ensued, as illustrated in the pioneering theoretical studies by de Gennes [1] and Odijk [2]. Rapid advances of nanofabrication and polymer handling, over the last few years, have been able to provide experimental validation to these studies and at the same time have been able to unravel different intriguing physical issues unique to nanoconfinement induced dynamics of polymer molecules. These studies have led to a plethora of new applications ranging from the estimation of structural and mechanical properties of polymer to fabrication of novel, portable diagnostic tool kits. In this review article, we shall revisit different physical and technological iss...
柔性聚合物分子在纳米尺度约束下的动力学特性主要取决于约束长度尺度相对于聚合物持续长度的相对值。正如de Gennes[1]和Odijk[2]的开创性理论研究所说明的那样,根据通道高度比聚合物持续长度大[1]还是小[2],会产生完全不同的聚合物动力学。在过去的几年中,纳米制造和聚合物处理的快速发展已经能够为这些研究提供实验验证,同时已经能够解开纳米限制诱导聚合物分子动力学的不同有趣的物理问题。这些研究导致了大量的新应用,从聚合物的结构和机械性能的估计到新型便携式诊断工具包的制造。在这篇综述文章中,我们将重温不同的物理和技术iss。
{"title":"Transport of flexible molecules in narrow confinements","authors":"Siddhartha Das, S. Chakraborty","doi":"10.1260/1759-3093.1.2.97","DOIUrl":"https://doi.org/10.1260/1759-3093.1.2.97","url":null,"abstract":"Dynamical characteristics of flexible polymer molecules in nanoscopic confinements are primarily dictated by the relative values of the confinement length scales with respect to the polymer persistence length. Depending on whether the channel height is larger [1] or smaller [2] than the polymer persistence length, altogether different polymer dynamics is ensued, as illustrated in the pioneering theoretical studies by de Gennes [1] and Odijk [2]. Rapid advances of nanofabrication and polymer handling, over the last few years, have been able to provide experimental validation to these studies and at the same time have been able to unravel different intriguing physical issues unique to nanoconfinement induced dynamics of polymer molecules. These studies have led to a plethora of new applications ranging from the estimation of structural and mechanical properties of polymer to fabrication of novel, portable diagnostic tool kits. In this review article, we shall revisit different physical and technological iss...","PeriodicalId":89942,"journal":{"name":"International journal of micro-nano scale transport","volume":"1 1","pages":"97-137"},"PeriodicalIF":0.0,"publicationDate":"2010-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66151278","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
Electrical Actuation-Induced Droplet Transport on Smooth and Superhydrophobic Surfaces 光滑和超疏水表面上电驱动诱导的液滴传输
Pub Date : 2010-02-08 DOI: 10.1260/1759-3093.1.1.1
V. Bahadur, S. Garimella
Electrical control of liquid droplet motion and wettability has wide-ranging applications in the field of MEMS, lab-on-a-chip devices and surface engineering, in view of the resulting enhanced flow control opportunities, low power consumption and the absence of mechanical moving parts. This article summarizes recent progress towards understanding of the fundamentals underlying electrical actuation of droplets on smooth and superhydrophobic surfaces. Electrical actuation of liquid droplets with widely differing electrical properties on smooth surfaces is first discussed. Electromechanical considerations are employed to study the actuation force on a generic liquid droplet across the entire spectrum of electrical actuation regimes. The challenges in understanding the fluid flow and dissipation mechanisms associated with a discrete moving droplet are discussed. The role of electrical voltages, interfacial energies and surface morphology in determining droplet states (nonwetting Cassie state and wetting Wenze...
液滴运动和润湿性的电气控制在MEMS、片上实验室设备和表面工程领域有着广泛的应用,因为由此增加了流量控制的机会,低功耗和没有机械运动部件。这篇文章总结了最近在理解在光滑和超疏水表面上电致动液滴的基本原理方面的进展。首先讨论了光滑表面上电学性质差别很大的液滴的电致动。采用机电因素来研究通用液滴在整个电致动范围内的致动力。在理解流体流动和耗散机制相关的离散运动液滴的挑战进行了讨论。研究了电压、界面能和表面形貌对液滴非润湿Cassie态和润湿Wenze态的影响。
{"title":"Electrical Actuation-Induced Droplet Transport on Smooth and Superhydrophobic Surfaces","authors":"V. Bahadur, S. Garimella","doi":"10.1260/1759-3093.1.1.1","DOIUrl":"https://doi.org/10.1260/1759-3093.1.1.1","url":null,"abstract":"Electrical control of liquid droplet motion and wettability has wide-ranging applications in the field of MEMS, lab-on-a-chip devices and surface engineering, in view of the resulting enhanced flow control opportunities, low power consumption and the absence of mechanical moving parts. This article summarizes recent progress towards understanding of the fundamentals underlying electrical actuation of droplets on smooth and superhydrophobic surfaces. Electrical actuation of liquid droplets with widely differing electrical properties on smooth surfaces is first discussed. Electromechanical considerations are employed to study the actuation force on a generic liquid droplet across the entire spectrum of electrical actuation regimes. The challenges in understanding the fluid flow and dissipation mechanisms associated with a discrete moving droplet are discussed. The role of electrical voltages, interfacial energies and surface morphology in determining droplet states (nonwetting Cassie state and wetting Wenze...","PeriodicalId":89942,"journal":{"name":"International journal of micro-nano scale transport","volume":"1 1","pages":"1-26"},"PeriodicalIF":0.0,"publicationDate":"2010-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66151105","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: 10
期刊
International journal of micro-nano scale transport
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1