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

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Crystallite Growth and Sintering Property of Metallic Nanoparticle 金属纳米颗粒的晶体生长和烧结性能
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626410
S. Shiomi
Nanoparticle has been attractive due to its low-temperature sintering property. For the large-scale production of nanoparticle, the liquid phase synthesis is a promising method because of its simple and convenient process. The nanoparticle, especially metallic nanoparticle, dispersed in a solution is generally protected by a dispersant to prevent the agglomeration. Therefore, the sintering behavior of such nanoparticles is strongly influenced by not only the material itself but also other additives like dispersant. In this work, Cu and Ag nanoparticles were synthesized using gelatin and oleic acid as a dispersant, and their crystallite growth behaviors and sintering properties were crystallographically studied. Through the heat treatment, the crystallite growth and the sintering of Cu were suppressed in an earlier stage than Ag by the oxide layer of Cu. We also clarified the gelatin formed a thick coating layer, which induced the suppression of crystallite growth and sintering. Moreover, we experimentally demonstrated that the in situ evaluation of crystallite size derived by X-ray diffraction can reflect the sintering behavior of particles.
纳米粒子因其低温烧结的特性而受到广泛的关注。对于纳米颗粒的大规模生产,液相合成因其工艺简单方便而成为一种很有前途的方法。分散在溶液中的纳米颗粒,特别是金属纳米颗粒,通常用分散剂保护以防止团聚。因此,这种纳米颗粒的烧结行为不仅受到材料本身的强烈影响,还受到分散剂等其他添加剂的强烈影响。本文以明胶和油酸为分散剂合成了Cu和Ag纳米颗粒,并对其晶体生长行为和烧结性能进行了晶体学研究。通过热处理,Cu的氧化层比Ag更早地抑制了Cu的晶粒生长和烧结。明胶形成了一层较厚的涂层,抑制了晶体的生长和烧结。此外,我们通过实验证明,由x射线衍射得出的晶体尺寸的原位评价可以反映颗粒的烧结行为。
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引用次数: 0
Photonic Single Crystal Heterostructures based on Perovskites/Molybdenum disulfide 基于钙钛矿/二硫化钼的光子单晶异质结构
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626316
Amal M. Al Amri, Jr-hau He
This work present an approach on fabricating advanced single crystal semiconducting hetero-structures optoelectronics devices. It demonstrates a new way of stacking the n-type MoS2 single crystal with p-type perovskite CH3NH3PbBr3 single crystal in the vertical direction enables us to p-n diode. Shows good current-voltage rectifying behavior in dark and light condition. Successful fabrication of single crystal CH3NH3PbBr3/MoS2. Optoelectronics devices is a step ahead in using single crystal hetero-structures devices.
本文提出了一种制造先进单晶半导体异质结构光电器件的方法。证明了将n型MoS2单晶与p型钙钛矿CH3NH3PbBr3单晶在垂直方向上叠加的新方法,使我们可以制作p-n二极管。在黑暗和光照条件下均表现出良好的电流-电压整流性能。成功制备CH3NH3PbBr3/MoS2单晶。光电子器件在使用单晶异质结构器件方面领先一步。
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引用次数: 0
Design and Characterization of Circuit based on Emerging Technology: the MagCAD Approach 基于新兴技术的电路设计与表征:MagCAD方法
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626232
U. Garlando, F. Riente, G. Cirillo, M. Graziano, M. Zamboni
Emerging technologies, such as field-coupled devices, are being studied in order to integrate or partially replace CMOS technology in digital electronics. These emerging technologies rely on completely different paradigms. In this work, we propose an approach to compare circuit based on two implementations of the Nano Magnet Logic that can be extended to other emerging devices. As case study, the architecture of a 2-to-l multiplexer and a carry select adder are considered. Their performance is investigated by means of MagCAD, a powerful graphical layout tool, used to simplify the process and speed up this analysis.
新兴技术,如场耦合器件,正在研究中,以集成或部分取代CMOS技术在数字电子。这些新兴技术依赖于完全不同的范例。在这项工作中,我们提出了一种基于纳米磁铁逻辑的两种实现来比较电路的方法,这种方法可以扩展到其他新兴器件。作为案例研究,考虑了2对1多路复用器和进位选择加法器的结构。通过强大的图形化布局工具MagCAD对它们的性能进行了研究,该工具用于简化过程并加快分析速度。
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引用次数: 2
A three-finger microgripper based on 3D-Assembly 一种基于3d装配的三指微夹持器
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626403
Hao Wu, Liguo Chen, Haibo Huang
Due to force scaling laws, large adhesion forces make the release of microobjects difficult. In order to achieve stable clamping, handling and reliable release of microscale components in micron scale, a three-finger microgripper was developed. The mechanical and dynamic characteristics of the microgripper are analyzed by the finite element software. The gripper is fabricated using a SOI process. Clamping operation is realized by using the electro-thermal-drive. The flat finger and the third finger are assembled into a three-dimensional structure by a micro-assembly method.Test results show the gripper obtained a displacement of 45 $mu mathrm{m}$ with an applied voltage of 25 V.Micro-operation experiment was made for the $70sim 110mu mathrm{m}$ microspheres. The cantilever micro-clamping finger can be used to auxiliary handover the release, which can effectively overcome the adhesion between the micro ball and the finger, to achieve reliable release operation.
由于力标度定律,较大的附着力使微物体难以释放。为了实现微米尺度微尺度元件的稳定夹持、搬运和可靠释放,研制了一种三指微夹持器。利用有限元软件对微夹持器的力学特性和动态特性进行了分析。该夹持器采用SOI工艺制造。夹紧操作采用电热驱动实现。通过微组装方法将平指和无名指组装成三维结构。测试结果表明,在施加25 V电压的情况下,夹持器的位移为45 $mu mathrm{m}$。对$70sim 110mu mathrm{m}$微球进行了微操作实验。可采用悬臂式微夹指辅助切换释放,可有效克服微球与指间的粘连,实现可靠的释放操作。
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引用次数: 0
Construction of Microenvironment Structures for the Study of Cell Behavior using DMD-based Optical Projection Lithography 基于dmd的光学投影光刻技术用于细胞行为研究的微环境结构构建
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626245
Zhixing Ge, Haibo Yu, Wenguang Yang, Lianqing Liu
The construction of the microenvironment is of great importance for the study of cell behaviors such as motility and viability. The morphology and mechanical properties of cells can be affected by the microenvironment and interactions between cells. There have been numerous studies on cell-cell and cell-microenvironment interactions. However, these studies are generally time-consuming and complicated for the following reasons: firstly, constructing the microenvironment is complex, as the microenvironment itself is complicated; secondly, the internal characteristics of different components of the microenvironment are highly variable and difficult to simulate. Using a digital micromirror device (DMD)-based optical projection lithography system, we have developed a new method for cell studies: by employing a digital dynamic mask, poly(ethylene glycol) dimethacrylate (PEGDMA)-based hydrogels could be easily designed with a wide variety of patterns. Those structures can be rationally designed to be functional, as different modules can mimic the microenvironment and restrict the migration of cells. Furthermore, 4% paraformaldehyde can be mixed into the PEGDMA and cured using UV exposure. Paraformaldehyde in hydrogels had a moderate impact on the viability of cells.
微环境的构建对于研究细胞的运动和活力等行为具有重要意义。细胞的形态和力学性能会受到微环境和细胞间相互作用的影响。关于细胞-细胞和细胞-微环境相互作用的研究很多。然而,这些研究通常耗时且复杂,原因如下:首先,微环境的构建是复杂的,因为微环境本身是复杂的;其次,微环境中不同组成部分的内部特征变化很大,难以模拟。利用基于数字微镜装置(DMD)的光学投影光刻系统,我们开发了一种新的细胞研究方法:通过采用数字动态掩模,聚乙二醇二甲基丙烯酸酯(PEGDMA)为基础的水凝胶可以很容易地设计出各种各样的图案。这些结构可以合理地设计成功能性的,因为不同的模块可以模拟微环境并限制细胞的迁移。此外,4%的多聚甲醛可以混入PEGDMA和固化使用紫外线曝光。水凝胶中的多聚甲醛对细胞活力有中等程度的影响。
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引用次数: 0
Flexible fiber based woven structured triboelectric nanogenerator for self-powered system 自供电系统用柔性纤维编织结构摩擦电纳米发电机
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626271
Jiwon Park, Dogyun Kim, Youn Tae Kim
Woven -structured or textile-based triboelectric nanogenerators (TENGs) can convert mechanical energy generated from human activities into electrical energy, which can then be used as an efficient power source for portable and wearable devices. However, previously developed woven-structured TENGs have poor stretchability, and fibers with multiple strands are required for weaving. In this paper, we propose a fiber-based woven-structured TENG (WTENG) having high elasticity and flexibility. The proposed WTENG generates an electrical output of ~34.4 $mu mathrm{W}/text{cm}^{2}$ by the continuous contact with and separation from human skin, and we confirm its durability and applicability to wearable devices. We believe that the proposed WTENG can be applied to various products, such as smart clothing, as well as to wearable energy harvesting devices because it can be manufactured on a large scale.
编织结构或基于纺织品的摩擦电纳米发电机(TENGs)可以将人类活动产生的机械能转化为电能,然后可以用作便携式和可穿戴设备的有效电源。然而,先前开发的机织结构的tens具有较差的拉伸性,并且需要具有多股的纤维来编织。本文提出了一种具有高弹性和柔韧性的纤维基编织物结构材料(WTENG)。所提出的WTENG通过与人体皮肤的持续接触和分离,产生约34.4 $mu mathm {W}/text{cm}^{2}$的电输出,证实了其耐久性和可穿戴设备的适用性。我们相信,提议的WTENG可以应用于各种产品,如智能服装,以及可穿戴的能量收集设备,因为它可以大规模生产。
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引用次数: 5
Winner- Takes-All path formation within highly disordered nanowire networks 在高度无序的纳米线网络中,赢家通吃的路径形成
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626261
F. Niosi, H. Manning, C. Rocha, C. O’Callaghan, M. Ferreira, J.J. Bol
Nanowire networks are promising memristive architectures for neuromorphic applications due to their connectivity and neurosynaptic-like behaviors. Here, we demonstrate a self-similar scaling of the conductance of networks and the junctions that comprise them. A particular class of junctions naturally leads to the emergence of conductance plateaus and a “winner-takes-all” conducting path which corresponds to the lowest-energy connectivity path. These results point to the possibility of independently addressing memory or conductance states in complex systems and is expected to have important implications for nanoelectronics and neuromorphic devices.
纳米线网络由于其连通性和神经突触样行为,在神经形态学应用中具有很好的记忆性结构。在这里,我们展示了网络和组成它们的结的电导的自相似缩放。一类特殊的结自然会导致电导平台和“赢家通吃”的传导路径的出现,这对应于最低能量的连接路径。这些结果指出了在复杂系统中独立解决记忆或电导状态的可能性,并有望对纳米电子学和神经形态器件产生重要影响。
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引用次数: 0
Investigating Electron-Phonon Coupling in Formamidinium Lead Iodide Perovskite Using Ultrafast Laser Spectroscopy 用超快激光光谱研究碘化铅钙钛矿中电子-声子耦合
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626311
V. Taylor, D. Tiwari, M. Duchi, P. Donaldson, I. Clark, D. Fermín, T. Oliver
The high charge carrier mobilities of hybrid inorganic-organic lead halide perovskites has previously been linked to ferroelectric domain formation due to alignment of organic cations within films. [1], [2] Our two-dimensional infrared ultrafast spectroscopy studies reveal that organic cations re-orient within several picoseconds, and therefore ferroelectric domain formation is very unlikely and unable to account for the observed long carrier lifetimes.[3] Complimentary time-resolved infrared measurements examined the electron-phonon coupling in the conduction band. Analysis of the spectral line shapes indicates that carriers form polarons within the instrument response.
无机-有机卤化铅钙钛矿的高载流子迁移率先前被认为与薄膜内有机阳离子排列形成的铁电畴有关。[1],[2]我们的二维红外超快光谱研究表明,有机阳离子在几皮秒内重新定向,因此铁电畴的形成非常不可能,也无法解释观察到的长载流子寿命[3]。互补时间分辨红外测量检测了传导带中的电子-声子耦合。对谱线形状的分析表明,载流子在仪器响应中形成极化子。
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引用次数: 1
Redox Cycling at Interdigitated Nanowire Electrode Arrays: Enhanced Electrochemical Sensing 交错纳米线电极阵列的氧化还原循环:增强的电化学传感
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626262
I. Seymour, P. Lovera, A. Wahl, J. Rohan, A. Riordan
Interdigitated nanowire arrays can be used to perform generator collector type electrochemical measurements. For this set up, one comb of nanowire arrays are used to perform a standard voltammetric technique while the other comb is biased at a constant potential. This technique gives rise to multiple benefits, most notably enhancement of electrochemical signals due to redox cycling, and reduced diffusional overlap in the electrode arrays. Simulations have been used to optimize the electrode designs and to help understand the processes that occur at the electrode surfaces under these conditions. The combination of experimental and simulation data has led to the optimization of a generator collector system with significant collection efficiencies at a variety of conditions.
交错纳米线阵列可用于进行发电机集电极型电化学测量。对于这种设置,纳米线阵列的一个梳用于执行标准伏安技术,而另一个梳在恒定电位下偏置。这项技术带来了多重好处,最显著的是由于氧化还原循环而增强了电化学信号,并减少了电极阵列中的扩散重叠。模拟已被用于优化电极设计,并帮助了解在这些条件下电极表面发生的过程。实验和模拟数据的结合导致了在各种条件下具有显著收集效率的发电机集热器系统的优化。
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引用次数: 0
Automated nanolithography process control for rapid & well ordered molecular self-assembly 自动纳米光刻过程控制快速和有序的分子自组装
Pub Date : 2018-07-01 DOI: 10.1109/NANO.2018.8626221
R. Lundy, C. Cummins, M. Morris, R. Enright
Block copolymers (BCPs) are a promising candidate as a bottom up next generation lithography technique. To produce an industry ready BCP process several challenges must be met. We report on the pattern formation via phase segregation of spin coated diblock copolymers in the limit of high solvent vapor annealing. A block copolymer annealing chamber has been developed to rapidly and reliably produce wafer scale nano patterns without the need to heat solvents. The BCP reconstruction step can be performed insitu and film swelling is monitored in real time via reflectometry for end-point detection. The system is currently being developed for full automation.
嵌段共聚物(bcp)作为自下而上的下一代光刻技术是一种很有前途的候选技术。为了生产一个行业适用的BCP工艺,必须应对几个挑战。报道了自旋包覆双嵌段共聚物在高溶剂蒸汽退火极限条件下的相偏析形成模式。开发了一种嵌段共聚物退火室,在不需要加热溶剂的情况下快速可靠地产生晶圆级纳米图案。BCP重建步骤可以在原位进行,并通过反射仪实时监测膜肿胀,以进行终点检测。该系统目前正在开发,以实现完全自动化。
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引用次数: 0
期刊
2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)
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