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2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)最新文献

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Enhanced ion-selective membrane sensors based on a novel electroacoustic measurement approach 基于新型电声测量方法的增强型离子选择膜传感器
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626277
Bruno F.E. Matarèse, A. Kale, A. Stevenson
this work investigates the mechanical and dielectric properties of an ion-selective membrane based on PDMS:PEG:valinomycin, with a view to creating practical geometries for high performance ion sensing in a variety of realworld settings including healthcare, food industry and agriculture. We focus effort on measuring physical changes in the membrane that can be detected with simple sensors. First a dynamic mechanical analyser instrument was used to determine the effect of potassium ions on the real and imaginary bending storage modulus, loss tangent, glass transition temperature, temperature coefficient of millimeter sized PDMS samples. Second, a microwave dielectric analyser with a coaxial probe fixture was applied to the same sample to isolate dielectric shifts associated with ion uptake, namely the real and imaginary permittivities. These perturbation measurements performed for PDMS, PDMS:PEG and PDMS:PEG:V samples, provide strong evidence that alternatives to traditional electrochemical sensing devices can easily be constructed. Thus a plethora of new acoustic and capacitive sensing geometries arise. Thus there is the opportunity to integrate membranes into quartz crystal microbalance, surface acoustic wave and single-sided capacitance sensors. Some suggestions on suitable dimensions, aspect ratios, operating frequencies are provided.
这项工作研究了基于PDMS:PEG:valinomycin的离子选择膜的机械和介电性能,以期在各种现实世界环境中创建高性能离子传感的实用几何形状,包括医疗保健,食品工业和农业。我们专注于测量膜的物理变化,这些变化可以用简单的传感器检测到。首先利用动态力学分析仪测定了钾离子对毫米尺寸PDMS样品的实、虚弯曲储存模量、损耗切线、玻璃化转变温度、温度系数的影响。其次,将带同轴探针夹具的微波介电分析仪应用于同一样品,以分离与离子摄取相关的介电位移,即实介电常数和虚介电常数。这些对PDMS, PDMS:PEG和PDMS:PEG:V样品进行的微扰测量提供了强有力的证据,证明可以很容易地构建传统电化学传感装置的替代品。因此,出现了大量新的声学和电容传感几何形状。因此,有机会将膜集成到石英晶体微天平,表面声波和单面电容传感器中。对合适的尺寸、宽高比、工作频率提出了一些建议。
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引用次数: 1
Sb co-Doping to Enhance Phosphorous Level on Ge Using Ion Decoupled Plasma Process 离子去耦等离子体工艺中Sb共掺杂提高锗表面磷水平
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626237
Chuck Paeng, He Zhang, Y. Kim
Ion decoupled plasma technique with low ion energy have been used to demonstrate conformal shallow junctions of phosphorous with higher than l E20 of dopants for germanium (Ge). Adding antimony (Sb) in plasma-assisted doping was found to enhance the phosphorous (P) dopant level dramatically. Various annealing techniques were compared to understand the impact to dopant activation and levels to form shallow junctions with enhanced P level.
利用低离子能量离子解耦等离子体技术,研究了磷与锗(Ge)掺杂剂的共形浅结。在等离子体辅助掺杂中加入锑(Sb)可以显著提高磷(P)掺杂水平。我们比较了不同的退火技术,以了解对掺杂激活和水平的影响,从而形成具有增强P水平的浅结。
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引用次数: 0
Fabrication and Optimization of Graphene Membrane for Gas Sensor Applications 用于气体传感器的石墨烯膜的制备与优化
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626222
Lina Tizani, I. Saadat, Cyril Aubry
Graphene membranes over Si etched cavities are fabricated to form the sensing element for micro gas sensors. The repeatability and stability of the sensor is dependent on stress and stretch of the graphene membrane which is related to the conformal to non-conformal morphology of the graphene. This in turn depends on the surface roughness of the Si surface that anchors the graphene film. In this paper we present the results of the optimization of the cavity formation process to allow for a smooth surface that allows superior adhesion of the graphene without extra stretching or tears.
在硅蚀刻腔上制备石墨烯膜,形成微气体传感器的传感元件。传感器的可重复性和稳定性取决于石墨烯膜的应力和拉伸,这与石墨烯的保形和非保形形貌有关。这反过来又取决于固定石墨烯薄膜的硅表面的表面粗糙度。在本文中,我们展示了优化空腔形成过程的结果,以允许光滑的表面,从而使石墨烯具有优越的附着力,而不会额外拉伸或撕裂。
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引用次数: 0
Cross-Plane Thermal Conductivity Measurements in Self-Assembled Nanodielectric Heterostructures 自组装纳米介电异质结构的平面热导率测量
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626384
O. Balogun, B. Lu, Binghao Wang, A. Facchetti, T. Marks
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引用次数: 0
Piezoelectric Hafnium Oxide Thin Films for Energy-Harvesting Applications 用于能量收集的压电氧化铪薄膜
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626275
S. Kirbach, K. Kühnel, W. Weinreich
This paper presents the piezoelectric properties of silicon doped hafnium oxide $(text{Si}:text{HfO}_{2})$ thin films and their superior suitability for energy harvesting applications. Various layer thicknesses from 10 nm to 50 nm, executed as single layer and in a laminate structure, are investigated. The piezoelectric coefficient $mathrm{d}_{33,mathrm{f}}$ of the samples is measured via double beam laser interferometry (DBLI) and converted into $mathrm{d}_{33}$, based on a numerical simulation model. Values of up to $mathrm{d}_{33}=73$ pm/V are obtained. Finally, the $text{Si}:text{HfO}_{2}$ films are electrically investigated by evaluating a relative permittivity between 37 and 47, respectively.
本文介绍了硅掺杂氧化铪$(text{Si}:text{HfO}_{2})$薄膜的压电性能及其在能量收集应用中的优越适用性。研究了从10 nm到50 nm的不同层厚度,作为单层和层压结构。采用双光束激光干涉法(DBLI)测量样品的压电系数$ mathm {d}_{33, mathm {f}}$,并根据数值模拟模型将其转换为$ mathm {d}_{33}$。得到的值不超过$ mathm {d}_{33}=73$ pm/V。最后,通过计算相对介电常数分别在37和47之间,对$text{Si}:text{HfO}_{2}$薄膜进行了电性研究。
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引用次数: 12
Emergent brain-like complexity from nanowire atomic switch networks: Towards neuromorphic synthetic intelligence 纳米线原子开关网络中涌现的类脑复杂性:走向神经形态合成智能
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626236
Z. Kuncic, I. Marcus, P. Sanz-Leon, R. Higuchi, Y. Shingaya, M. Li, A. Stieg, J. Gimzewski, M. Aono, T. Nakayama
__The atomic switch is a novel nanotechnology that mimics the chemical synapse between neurons in response to electrical stimuli. When connected together in a self- organized manner, similar to a neuronal network, atomic switch networks exhibit emergent brain-like complexity properties, including nonlinear stochastic dynamics and memorization, making them a unique experimental system for emulating intelligence. Here we present a computational model developed to simulate atomic switch networks to explore the scope of emergent brain-like features. Our modelling results demonstrate the capacity for neuromorphic atomic switch networks to emulate long-term memory and generate scale-invariant fluctuations in signal transmission, in direct analogy to the brain.
解析:句意:原子开关是一种新型纳米技术,它模仿神经元之间的化学突触对电刺激的反应。当原子开关网络以自组织的方式连接在一起时,类似于神经网络,原子开关网络表现出类似大脑的复杂特性,包括非线性随机动力学和记忆,使它们成为模拟智能的独特实验系统。在这里,我们提出了一个用于模拟原子开关网络的计算模型,以探索紧急类脑特征的范围。我们的建模结果证明了神经形态原子开关网络模拟长期记忆的能力,并在信号传输中产生尺度不变的波动,直接类比于大脑。
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引用次数: 14
Enhanced Absorption in Organic Solar Cells by employing Plasmonic Nanostructures 利用等离子体纳米结构增强有机太阳能电池的吸收
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626231
K. Kuma, U. Kumawat, A. Dhawan
In this paper, we present organic solar cells (OSCs) containing plasmonic silver nanostructures in the active medium poly[[9-(l-octylnonyl)-9H-carbazole-2,7 -diyl]-2,5-thiophenediyl-2, 1,3-benzothiadiazole-4,7 -diyl-2,5-thiophenediyl] (PCDTBT):[6], [6]-phenyl C71 butyric acid methyl ester (PC71BM). Finite-difference time-domain (FDTD) modeling was employed to simulate the interaction of incident light with plasmonic nanostructures of different shapes, leading to a broadband absorption enhancement in the OSCs. It is demonstrated that this enhancement is primarily due to enhanced far field scattering - localized surface plasmon excitation - from the nanostructures in the active medium. We demonstrate a 25.28% increase in the short circuit current density, $mathrm{J}_{text{SC}}$ for the OSCs containing hexagonal nanodiscs in the active medium.
在本文中,我们在活性介质聚[[9-(l-辛基壬基)- 9h -咔唑-2,7 -二基]-2,5-噻吩二基- 2,1,3 -苯并噻吩二唑-4,7 -二基-2,5-噻吩二基](PCDTBT):[6],[6]-苯基C71丁酸甲酯(PC71BM)中制备了含有等离子体银纳米结构的有机太阳能电池(OSCs)。采用时域有限差分(FDTD)模型模拟了入射光与不同形状的等离子体纳米结构的相互作用,从而导致OSCs中的宽带吸收增强。结果表明,这种增强主要是由于活性介质中纳米结构的远场散射增强——局部表面等离子激元激发。我们证明了在有源介质中含有六边形纳米片的OSCs的短路电流密度增加了25.28%,$ mathm {J}_{text{SC}}$。
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引用次数: 0
All Printed Large Area E-field Antenna Utilizing Printed Organic Rectifying Diodes for RF Energy Harvesting 利用印刷有机整流二极管进行射频能量收集的全印刷大面积电场天线
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626318
Miao Li, George Daniel, B. Kahn, Liam H. Ohara, B. Casse, Nathan Pretorius, B. Krusor, P. Mei, G. Whiting, C. Tonkin, D. Lupo
Fully printed radio frequency (RF) harvesters that operate at HF RFID and ISM frequency of 13.56 MHz are normally comprised of a small printed loop antenna. They work at short ranges using inductive coupling. In this paper, we present a novel screen printed large area E-field antenna incorporated with a printed organic diode rectifier that can provide close to 1 V dc voltage with 1 W input at a distance of a few meters. The unique high bulk capacitance of the printed organic diodes enables effective imaginary impedance matching to the antenna without an additional matching component. The results demonstrate the possibility of fully printed RF energy harvesters for long range operation at HF frequencies.
在13.56 MHz的高频RFID和ISM频率下工作的全印刷射频(RF)收割机通常由一个小型印刷环形天线组成。它们使用电感耦合在短距离内工作。在本文中,我们提出了一种新型的丝网印刷大面积电场天线,该天线结合了印刷有机二极管整流器,可以在几米的距离上提供接近1 V的直流电压和1 W的输入。印刷有机二极管具有独特的高体电容,无需额外的匹配组件即可实现与天线的有效虚阻抗匹配。结果表明,全印刷射频能量采集器在高频下长距离工作的可能性。
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引用次数: 3
Electro-Physical Properties of Niobia Columnlike Nanostructures via the Anodizing of Al/Nb Layers Al/Nb层阳极氧化制备铌柱状纳米结构的电物理性质
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626387
A. Pligovka, A. Lazavenka, A. Zakhlebayeva
Two types of niobia columnlike nanostructures were synthesized by anodization, reanodization, and chemical etching of sputter-deposited Al/Nb metal layers. The morphological properties of synthesized niobia columnlike nanostructures were determined by means of scanning electron microscopy. The electro-physical characteristics of niobia columnlike nanostructures were investigated in two measurement schemes. Aluminum layers of thickness 500 nm were used as contact pads. The current-voltage I-U characteristic has a nonlinear and nonsymmetrical character. The rising of temperature leads to an increase of the current. This behavior may indicate a p-n or metal-semiconductor junction. The initial resistance at 23 °C was 60 and 120 kOhms, the specific resistance to the height of the columns was 87 and 116 kOhms·nm−1, the calculated temperature coefficient of resistance appeared to be negative and rather low: $-1.39times 10^{-2}$ and $-1.28times 10^{-2}mathrm{K}^{-1}$ for the niobia columnlike nanostructures reanodized at 300 and 450 V, respectively.
对溅射沉积的Al/Nb金属层进行阳极氧化、再阳极氧化和化学蚀刻,合成了两种铌柱状纳米结构。利用扫描电镜对合成的铌柱状纳米结构进行了形貌表征。采用两种测量方法研究了铌柱状纳米结构的电物理特性。接触垫采用厚度为500 nm的铝层。电流-电压I-U特性具有非线性和非对称特性。温度的升高导致电流的增大。这种行为可能表明是pn结或金属半导体结。23℃时的初始电阻分别为60和120 kOhms,柱高比电阻分别为87和116 kOhms·nm -1,计算得到的电阻温度系数为负且较低,分别为$-1.39乘以10^{-2}$和$-1.28乘以10^{-2}$。
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引用次数: 8
Stochastic analytical model of nanonetwork synchronization using quorum sensing 基于群体感应的纳米网络同步的随机分析模型
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8706515
P. Tissera, S. Choe
A coordinated bacterial nanonetwork could be applicable to large and diverse application areas including nanomedicine, nanobiotechnology, green-nanoproducts, and so on. For the construction of a bio-inspired coordinated bacterial molecular communication (MC) nanonetwork, synchronization technique is essential. This paper presents a stochastic analytical model of the nanonetwork synchronization using quorum sensing (QS). The QS mechanism that controls bacterial behavior in a collective manner is often observed in bacterial community. Bacteria use secreted chemical signaling molecules called autoinducers (AI) to communicate with each other. For more practical analysis, the presented bacterial network model employs a birth death-based statistical approach with a logistic growth curve (S curve) instead existing deterministic approach with an exponential growth curve (J curve). Assume that the internal or external AI concentration is Gaussian-distributed with corresponding mean and variance. Via simulation, we analyze the global synchronization behavior of the presented bio-inspired nanonetwork in terms of synchronization time, bacterial density, and AI concentration.
协同细菌纳米网络可以应用于纳米医学、纳米生物技术、绿色纳米产品等广泛而多样的应用领域。构建仿生协同细菌分子通信(MC)纳米网络,同步技术至关重要。提出了基于群体感应的纳米网络同步的随机分析模型。在细菌群落中经常观察到集体控制细菌行为的QS机制。细菌利用分泌的化学信号分子——自动诱导物(AI)来相互交流。为了进行更实际的分析,本文提出的细菌网络模型采用基于出生死亡的统计方法,采用logistic增长曲线(S曲线),而不是现有的确定性方法,采用指数增长曲线(J曲线)。假设内部或外部AI浓度为高斯分布,具有相应的均值和方差。通过仿真,我们从同步时间、细菌密度和人工智能浓度等方面分析了所提出的仿生纳米网络的全局同步行为。
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引用次数: 0
期刊
2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)
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