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2017 IEEE 17th International Conference on Nanotechnology (IEEE-NANO)最新文献

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Device synthesis topology for zinc oxide nanowire sensors 氧化锌纳米线传感器的器件合成拓扑
Pub Date : 2017-07-01 DOI: 10.1109/NANO.2017.8117466
Bruce C. Kim, Anurag Gupta
This paper describes two unique device topologies: single ZnO nanowire and array ZnO nanowire-based devices. Two device topologies have been fabricated and compared for their sensing performance. The single nanowire device has been fabricated through focused ion beam and e-beam lithography techniques while the SEM and EDAX analysis have been used to characterize the device. The IV characteristics of the ZnO nanowire-based array devices have been measured through a semiconductor parameter analyzer.
本文描述了两种独特的器件拓扑结构:单氧化锌纳米线和阵列氧化锌纳米线器件。制备了两种器件拓扑结构,并对其传感性能进行了比较。通过聚焦离子束和电子束光刻技术制备了单纳米线器件,并用SEM和EDAX分析对器件进行了表征。利用半导体参数分析仪测量了ZnO纳米线阵列器件的IV特性。
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引用次数: 0
Figure of merit analysis of nanostructured thermoelectric materials at room temperature 室温下纳米结构热电材料的性能分析图
Pub Date : 2017-07-01 DOI: 10.1109/NANO.2017.8117430
Md. Mer Mosharraf Hossain, S. Ahmed, S. M. Shahriar, Md. S. U. Zzaman, Avijit Das, A. Saha, Md. Belal Hossain Bhuian
In this paper, we mainly focused on analyzing the thermoelectric property i.e. figure of merit of different nanostructured materials in room temperature (300–310 K). Here we studied the transition-metal dichalcogenides, particularly Molybdenum Disulfide (MoS2); Metal Oxides, specifically Zinc Oxide (ZnO); and conventional semiconductor materials, i.e. n-type and p-type Silicon (Si) and Silicon Germanium (SiGe). At first, we calculated the electrical conductance (Ge), by using electronic density functional theory (DFT). Similarly, we calculated the thermal conductance (κ) using Tersoff empirical potential (TEP) model. With these calculated values of Ge and κ and the Seebeck coefficient (S), we calculated the figure of merit (ZT) at different room temperatures. The main findings of our research were the increased ZT of MoS2, which is slightly larger than p-type Si while, 2∼3 times larger than ZnO and 100∼103 times larger than conventionally used SiGe and n-type Si at room temperatures. We have further investigated a thermoelectric generator (TEG) device with these materials to validate our result.
本文主要分析了不同纳米结构材料在室温(300-310 K)下的热电性能,即优值图,主要研究了过渡金属二硫化物,特别是二硫化钼(MoS2);金属氧化物,特别是氧化锌;以及常规半导体材料,即n型和p型硅(Si)和硅锗(SiGe)。首先,我们利用电子密度泛函理论(DFT)计算了电导(Ge)。同样,我们使用Tersoff经验电位(TEP)模型计算热导率(κ)。利用这些计算出的Ge和κ值以及塞贝克系数(S),我们计算出了不同室温下的优值(ZT)。在室温下,MoS2的ZT比p型Si略大,比ZnO大2 ~ 3倍,比常规使用的SiGe和n型Si大100 ~ 103倍。我们进一步研究了使用这些材料的热电发电机(TEG)装置来验证我们的结果。
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引用次数: 1
Azurin based flexible device for resistive switching memory application 基于Azurin的电阻式开关存储器柔性器件
Pub Date : 2017-07-01 DOI: 10.1109/NANO.2017.8117264
Akshay Moudgil, Neeti Kalyani, Samaresh Das, P. Mishra
Resistive switching memory devices is a promising candidate for next generation data storage. The use of nontoxic and natural available biomaterials are prospective building block for environment friendly, biocompatible and biodegradable electronic devices. The fabrication and characterization of protein based Al/Azurin/ITO/PET flexible memory device is presented here. We observed significant bistable resistive switching behavior with long retention time and very good stability under bending stress at room temperature. The memory behavior originates due to the redox pair formation in the azurin, which corresponds to the low and high resistive states. This demonstration implies that the azurin protein is an active and useful biomaterial for nonvolatile memory and sustainable bioelectronics applications.
电阻开关存储器件是下一代数据存储的一个很有前途的候选器件。使用无毒和天然可利用的生物材料是环境友好、生物相容性和生物可降解电子器件的前景基石。本文介绍了基于蛋白的Al/Azurin/ITO/PET柔性存储器件的制备与表征。在室温弯曲应力下,我们观察到明显的双稳态电阻开关行为,保持时间长,稳定性好。记忆行为源于蓝蛋白中氧化还原对的形成,对应于低阻态和高阻态。这表明azurin蛋白是一种有效的生物材料,可用于非易失性记忆和可持续生物电子学应用。
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引用次数: 0
Improving the immunity of SET/MOS hybrid A/D converters using Boltzmann machine networks 利用玻尔兹曼网络提高SET/MOS混合A/D转换器的抗扰度
Pub Date : 2017-07-01 DOI: 10.1109/NANO.2017.8117259
Zihan Zhang, Chunhong Chen
Single-electron-transistor (SET)/MOS hybrid architectures greatly simplify the design of traditional A/D converters, but are quite unreliable due to random background charges. We propose a method of implementing Boltzmann machine networks on hybrid ADCs for the improved immunity against background charges. The self-regulation with Boltzmann machines enables the digital outputs of ADC to converge to a stable state when a simulated annealing process is applied. Simulation results with a 3-bit ADC are provided to show the effectiveness of the proposed structure. A possible structure for the higher resolution of ADCs is also presented.
单电子-晶体管(SET)/MOS混合架构极大地简化了传统A/D转换器的设计,但由于随机背景电荷的影响,其设计非常不可靠。我们提出了一种在混合adc上实现玻尔兹曼机器网络的方法,以提高对背景电荷的免疫力。玻尔兹曼机的自调节使ADC的数字输出在模拟退火过程中收敛到稳定状态。最后给出了一个3位ADC的仿真结果,验证了该结构的有效性。本文还提出了一种可能实现高分辨率adc的结构。
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引用次数: 1
Electrically conductive, polymer nanofibers fabricated by electrospinning and electroless copper plating 采用静电纺丝和化学镀铜制备的导电聚合物纳米纤维
Pub Date : 2017-07-01 DOI: 10.1109/NANO.2017.8117479
Kailey Shara, Y. Choi, Yongkun Sui, C. Zorman
This paper reports the development of electrically conductive, polymer nanofibers fabricated by electrospinning and electroless copper plating. The electrospun nanofibers were made using a precursor consisting of styrene-isoprene-styrene (SIS) block copolymer and silver trifluoroacetate. For process development and materials characterization, the fibers were electrospun as a thin membrane on glass slides. After electrospinning, each sample was exposed to an argon plasma in order to stimulate the formation of Ag metal within the fibers. Using Ag as a catalyst, copper coatings were formed on the fibers by electroless plating. It was found that high quality copper could readily form on the polymer nanofibers, rendering the originally highly resistive nanofiber membranes electrically conductive while simultaneously optically translucent. To characterize the electrical behavior of the plated fibers under mechanical load, samples were electrospun on a solid, elastic SIS thick film, plasma treated, electroless plated and subjected to elongation. One sample maintained measurable resistances for elongations of up to 167% of its unstretched value.
本文报道了静电纺丝法和化学镀铜法制备导电高分子纳米纤维的研究进展。以苯乙烯-异戊二烯-苯乙烯(SIS)嵌段共聚物和三氟乙酸银为前驱体制备了电纺丝纳米纤维。为了工艺开发和材料表征,纤维被静电纺成薄膜在玻片上。静电纺丝后,每个样品都暴露在氩等离子体中,以刺激纤维内银金属的形成。以银为催化剂,通过化学镀在纤维表面形成铜涂层。研究发现,高质量的铜可以很容易地在聚合物纳米纤维上形成,使原本高电阻的纳米纤维膜具有导电性,同时具有光学半透明性。为了表征电镀纤维在机械载荷下的电学行为,样品被静电纺丝在一个固体,弹性SIS厚膜上,等离子体处理,化学镀和伸长。一个样品保持可测量的延伸电阻高达其未拉伸值的167%。
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引用次数: 1
Nanomanipulation of a single carbon nanotube for the fabrication of a field-effect transistor 用于制造场效应晶体管的单碳纳米管的纳米操纵
Pub Date : 2017-07-01 DOI: 10.1109/NANO.2017.8117322
Ning Yu, Qing Shi, M. Nakajima, Huaping Wang, Zhan Yang, Qiang Huang, T. Fukuda
Field-effect transistors (FETs) have been developed from silicon based to carbon nanotubes (CNTs) based, and the fabrication space became three-dimensionl (3D). Such fabrication process requires to accurately assemble a single CNT in 3D. However, most of the current assembly technologies were used for planar structures but not for 3D structures. In this study, we aim to use nanomanipulation based on a scanning electron microscopy (SEM) to realize the 3D assembly. To achieve this goal, we first proposed a novel 3D structure named Tri-gate CNT-FET. The Tri-gate CNT-FET has three cuboid micro-electrodes and it is wrapped by CNTs with front, top and back sides. After fabrication of the electrodes, a single CNT was picked up by an Au-coated probe and placed on the front side of the three micro-electrodes by suspending over a substrate to a certain height. The CNT pick-up and placement highly depended on attractive interactions at a CNT-metal contact interface by van der Waals force. Electron beam induced deposition (EBID) technique was then used to deposit Tungsten at the interface to fix CNT. Mechanical cutting was finally carried out to release the probe from the assembled structure. The whole assembly was achieved by using only one nanomanipulator. Experiment results validated our proposed 3D assembly method for the fabrication of Tri-gate CNT-FET.
场效应晶体管(fet)已经从硅基发展到碳纳米管基,其制造空间也变得三维化。这种制造工艺需要在三维空间中精确地组装单个碳纳米管。然而,目前大多数装配技术都是用于平面结构,而不是用于三维结构。在本研究中,我们的目标是利用基于扫描电子显微镜(SEM)的纳米操作来实现三维装配。为了实现这一目标,我们首先提出了一种新的三维结构,称为三栅极碳纳米管场效应管。三栅极碳纳米管场效应管具有三个长方体微电极,并由前、上、后三个侧面的碳纳米管包裹。电极制作完成后,单个碳纳米管被镀有au的探针拾取,并悬浮在衬底上到一定高度,放置在三个微电极的正面。碳纳米管的拾取和放置高度依赖于碳纳米管-金属接触界面上由范德华力产生的吸引相互作用。然后采用电子束诱导沉积(EBID)技术在界面处沉积钨以固定碳纳米管。最后进行机械切割,将探头从组装的结构中释放出来。整个装配过程仅使用一个纳米机械臂即可完成。实验结果验证了我们提出的三栅极碳纳米管场效应管的三维组装方法。
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引用次数: 2
Calibration of lateral force of AFM measurement AFM测量横向力的校正
Pub Date : 2017-07-01 DOI: 10.1109/NANO.2017.8117333
Q. Gao, Guangfu Wu, K. Lai
Atomic force microscope (AFM) is a useful apparatus for measuring interaction forces between an AFM tip and samples at nanoscale. These forces can be classified into a normal force and a lateral force based on the deformation of AFM cantilever. The reliability of the measurement result is influenced by calibrating the spring constant of the AFM probe directly. However, it is still a challenge to quantitative lateral force because current calibration of lateral signal is complicated. Here, we present a simple experimental procedure to calculate a calibration factor of lateral force of a cantilever, and the method can be applied to most commercial AFM probes with rectangular cantilever.
原子力显微镜(AFM)是一种在纳米尺度上测量AFM针尖与样品相互作用力的有效仪器。这些力可以根据AFM悬臂梁的变形分为法向力和侧向力。原子力显微镜探针弹簧常数的标定直接影响测量结果的可靠性。然而,由于目前侧向力信号的标定比较复杂,侧向力的定量仍然是一个挑战。本文提出了一种计算悬臂梁横向力标定系数的简单实验方法,该方法可应用于大多数具有矩形悬臂梁的商用AFM探针。
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引用次数: 0
Energy-delay-reliability of present and next generation STT-RAM technology 当前和下一代STT-RAM技术的能量延迟可靠性
Pub Date : 2017-07-01 DOI: 10.1109/NANO.2017.8117474
S. Ganguly, Yunkun Xie, Avik W. Ghosh
STT-RAMs show the promise to be the universal memory device with applications in embedded devices. There are outstanding challenges that need to be addressed before a wide-scale adoption of this technology happens. The solution to these challenges lie in integration of emerging high performance spintronic materials as well as clever circuit based techniques to operate these devices at their peak performance. In this work we present a material-device-circuit co-design framework that connects the properties of materials and transport physics to circuits and systems performance. To illustrate the use of this framework we study present and next generation STT-RAM technology in terms of energy-delay-reliability performance metrics and suggest possible directions for future generation devices.
stt - ram显示出在嵌入式设备中应用的通用存储设备的前景。在大规模采用这项技术之前,还需要解决一些突出的挑战。这些挑战的解决方案在于集成新兴的高性能自旋电子材料,以及基于智能电路的技术,以使这些设备达到最佳性能。在这项工作中,我们提出了一个材料-器件-电路协同设计框架,将材料和传输物理的特性与电路和系统性能联系起来。为了说明该框架的使用,我们从能量延迟可靠性性能指标的角度研究了当前和下一代STT-RAM技术,并为未来一代设备提出了可能的方向。
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引用次数: 2
Electrospray-dynamic mobility analysis for characterization of engineered nanomaterials in aqueous samples 电喷雾动态迁移率分析表征工程纳米材料在水样品
Pub Date : 2017-07-01 DOI: 10.1109/NANO.2017.8117412
J. Niu, P. Rasmussen
Understanding the behavior and fate of engineered nanomaterials (ENMs) released to the environment requires measurement of their physicochemical properties in relevant media. Specialized instrumentation is required to be able to detect their changes in physicochemical characteristics (such as agglomeration and dissolution) as ENMs move from the manufactured state to the exposure pathway and ultimately interact with biological systems. This study combined electrospray with dynamic mobility analysis (ES-DMA) for characterizing ENMs in dispersions. The capability of this approach to measure different size ranges of silica, gold, silver and cerium dioxide nanoparticles in dispersions was evaluated. The proposed approach was found to be capable of accurately characterizing nanoparticle size and size distributions in monomodal, polymodal and polydispersed samples. The capability of ES-DMA to resolve polymodal nanoparticle size distributions over a wide size range (from 6 to 217 nm) in a single run facilitates the detection of aggregation/agglomeration processes. Results obtained using ES-DMA were compared with those using single particle inductively-coupled plasma mass spectrometry (SP-ICP-MS). Measurements of particle size and size distribution obtained using ES-DMA compared well with reference values and with results obtained using SP-ICP-MS, showing that this technique is capable of reliable characterization of dispersed ENMs.
了解工程纳米材料(enm)释放到环境中的行为和命运需要在相关介质中测量其物理化学性质。当enm从制造状态转移到暴露途径并最终与生物系统相互作用时,需要专门的仪器来检测其物理化学特性(如团聚和溶解)的变化。本研究结合电喷雾和动态迁移率分析(ES-DMA)来表征分散体中的enm。评价了该方法测量分散体中不同尺寸范围的二氧化硅、金、银和二氧化铈纳米颗粒的能力。所提出的方法被发现能够准确表征纳米颗粒的尺寸和尺寸分布在单模态,多模态和多分散样品。ES-DMA在单次运行中解析宽尺寸范围(从6到217 nm)的多模态纳米颗粒尺寸分布的能力有助于检测聚集/团聚过程。将ES-DMA法所得结果与单粒子电感耦合等离子体质谱法(SP-ICP-MS)所得结果进行比较。ES-DMA获得的粒度和粒度分布测量值与参考值以及SP-ICP-MS获得的结果进行了很好的比较,表明该技术能够可靠地表征分散的ENMs。
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引用次数: 0
Tape-based flexible metallic and dielectric nanophotonic devices and metamaterials 基于带的柔性金属和介电纳米光子器件和超材料
Pub Date : 2017-07-01 DOI: 10.1109/NANO.2017.8117339
Qiugu Wang, Weikun Han, Yifei Wang, Meng Lu, Liang Dong
This paper presents a multifunctional nanotransfer printing (nTP) method based on a simple stick-and-peel procedure that allows fast production of multiple optical nanodevices using Scotch tape. In addition to the capabilities of forming single- and multi-layer nanopatterned films on a tape, the present technique facilitates the transfer of nanostructures onto unconventional substrates (such as cleaved fiber facets and curved fiber sides) and fabrication of more complex optical devices, including Fabry-Perot cavities. Moreover, our stick-and-peel method can be applicable to various metallic and dielectric structures, including metamaterials with the feature size below 100 nm and TiO2 nanopatterned films.
本文提出了一种多功能纳米转移印刷(nTP)方法,该方法基于简单的粘贴和剥离程序,允许使用透明胶带快速生产多个光学纳米器件。除了在纸带上形成单层和多层纳米图案薄膜的能力外,目前的技术还有助于将纳米结构转移到非常规基底上(如劈裂的纤维表面和弯曲的纤维侧面),并有助于制造更复杂的光学器件,包括法布里-珀罗腔。此外,我们的贴剥方法可以适用于各种金属和介电结构,包括特征尺寸在100 nm以下的超材料和TiO2纳米图案薄膜。
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引用次数: 0
期刊
2017 IEEE 17th International Conference on Nanotechnology (IEEE-NANO)
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