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2018 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO)最新文献

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Thermal Stability of Bulk Heterojunction Photovoltaics Revealed by Electrical Scanning Probe Microscopy 电扫描探针显微镜研究体异质结光伏材料的热稳定性
Denghua Li, Zhemin Li, Shiwei Xu, Deng-hua Li, Yanlian Yang, Han Yan
Thermal stability is very important for real application of bulk heterojunction (BHJ) solar cells. In this work, we report the thermal stability and degradation behavior of the BHJ solar cells. The evolution of the local structures and in situ charge separation and transport were revealed by electrical scanning probe microscopy (ESPM). The BHJ solar cells are composed of a 2D conjugated thienyl-substituted BDT with substituted TT (PBDTTT-C-T) or conventional semicrystalline poly(3-hexylthiophene) (P3HT) as the electron donors and [6,6]-phenyl C61-butyric acid methyl ester (PCBM) or indene-C60 bisadduct (ICBA) as the acceptors. Among these four material pair-wise combinations, the PBDTTT-C-T/ICBA combination show highest thermal stability (the PCE declined by 10.77%) while the P3HT/PCBM combination shown worst (declined by 42.82%). Morphological and charge information with nanoscale resolution were provided. The hole transport and mobility of the P3HT-based BHJ blend films declined significantly after the aging treatment. However, for the PBDTTT-C-T-based BHJ system, the hole current was even enhanced. Physical evolution processes were proposed to depict the thermal aging effects within the active layer. This work provides new insights into the rational design of thermally stable photovoltaic systems by considering mesoscopic heterogeneity.
热稳定性对体异质结太阳能电池的实际应用至关重要。在这项工作中,我们报道了BHJ太阳能电池的热稳定性和降解行为。利用电扫描探针显微镜(ESPM)观察了其局部结构的演变以及原位电荷的分离和输运。BHJ太阳能电池由二维共轭噻基取代的取代TT (PBDTTT-C-T)或传统的半晶聚(3-己基噻吩)(P3HT)作为电子给体和[6,6]-苯基c61 -丁酸甲酯(PCBM)或茚- c60双加物(ICBA)作为受体组成。四种材料对组合中,PBDTTT-C-T/ICBA组合的热稳定性最高(PCE下降10.77%),而P3HT/PCBM组合的热稳定性最差(下降42.82%)。提供了纳米级分辨率的形态和电荷信息。时效处理后,p3ht基BHJ共混膜的空穴迁移率和迁移率显著下降。然而,对于基于pbdttt - c的BHJ体系,空穴电流甚至得到了增强。提出了描述活性层内热老化效应的物理演化过程。这项工作为考虑介观非均质性的热稳定光伏系统的合理设计提供了新的见解。
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引用次数: 0
3M-NANO 2018 Cover Page 3M-NANO 2018封面
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引用次数: 0
An Experimental Study of Ultrasonic Assisted Micro-Holes Drilling 超声辅助微孔钻孔的实验研究
Huadong Yu, G. Chen, Jinkai Xu, Jingdong Wang, Zhanjiang Yu, Xiliang Tang
The ultrasonic vibration has increasing implementation in metal machining as an assisted method. It adds high frequency vibration with low amplitude to the workpiece or the cutting tool and it has been verified to have the great potential on cutting force reduction, surface quality improvement, tool wear decrease and so on. This paper applied the ultrasonic vibration to the micro-holes drilling of 30CrNiMo8. In order to identify the performance of the combination, an ultrasonic machine tool with the vibration in the feed direction was designed and assembled. The spindle speed and feed rate and were taken as the controlled variables and a series of experiments were carried out. The results indicated that the ultrasonic assisted micro-holes drilling transformed the drilling process and the mechanism of the chip formation, which noticeably suppressed the exit burrs and ensured the dimensional accuracy and the surface roughness of the micro-holes.
超声振动作为一种辅助方法在金属加工中的应用越来越广泛。它给工件或刀具增加了低振幅的高频振动,在减小切削力、改善表面质量、减少刀具磨损等方面具有很大的潜力。本文将超声波振动应用于30CrNiMo8的微孔钻孔。为了确定该组合的性能,设计并装配了一种具有进给方向振动的超声机床。以主轴转速和进给速度为控制变量,进行了一系列实验。结果表明:超声辅助微孔钻孔改变了钻孔工艺和切屑形成机理,明显抑制了出口毛刺的产生,保证了微孔的尺寸精度和表面粗糙度。
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引用次数: 0
Analysis of Light-mass and High-strength Veins of Hind Wing from Asian Ladybird Beetle 亚洲瓢虫后翅轻质量高强度脉的分析
Jiyu Sun, Z. Song, Chunxiang Pan, Zhuo Liu
The deployable hind wings of Coleoptera are highly specialized for their flight. The veins of Asian ladybird beetle (Harmonia axyridis) hind wings play a role in its flight. This paper investigates the structural morphology of veins of hind wing in H. axyridis. Additionally, considering the blood in veins, the total mass, and mass distribution of hind wings are studied. The results shown that the variation trend of mass result of the left and right hind wings are almost consistent with the difference of body weight, and the polynomial fit of the mass of left wings (m1), the mass of right wings (m2) and the body mass of H. axyridis (M) are polynomial functions, and the trends of two polynomial functions are similar. The tensile test results are proved that the hind wing of H. axyridis is a high toughness composites due to the veins’ network structure. The light-mass and high-strength vein of deployable hind wings of H. axyridis will be helpful to design biomimetic deployable micro air vehicle (MAV).
鞘翅目可展开的后翅是专门用于飞行的。亚洲瓢虫(Harmonia axyridis)后翅的叶脉在其飞行中起着重要作用。本文研究了叶蝉后翅叶脉的结构形态。此外,考虑到静脉血液,研究了后翼的总质量和质量分布。结果表明:左右后翼质量结果的变化趋势与体重的差异基本一致,且左、右后翼质量(m1)、右后翼质量(m2)和红毛猴体重(M)的多项式拟合均为多项式函数,且两个多项式函数的变化趋势相似。拉伸试验结果表明,叶脉呈网状结构,是一种高韧性复合材料。这种轻质量、高强度的可展开后翼叶脉将有助于设计仿生可展开微型飞行器(MAV)。
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引用次数: 8
Calculation and Optimization of the Cover Model of an Engine Valve Chamber 某发动机气门室盖板模型的计算与优化
W. Cheng, Q. Yu, Jinkai Xu, Huadong Yu, Yonghua Wang
At the beginning of the design of a certain type of engine, the dynamic analysis of the left and right valve chamber assembly of the engine is carried out by means of finite element method, and the modal calculation is carried out. The overall stiffness of the cover of the left and right valve chamber is evaluated. The modal frequency and mode of the hood cover are obtained. According to the calculation results, the scheme of the valve chamber cover is optimized. The modal analysis is carried out on the improved normal hood cover, and the final optimal scheme is obtained, which provides a reference for the followup design of the hood chamber cover of the engine. According to it. Compared with the original scheme, the improved scheme of the left valve chamber cover frequency is 1676Hz, which is 6.28% higher than that of the original scheme 1577Hz; the first order mode frequency 1729Hz in the assembly state of the right valve chamber cover is 14.88% higher than that of the original scheme.
在某型发动机设计之初,采用有限元法对发动机的左右气门室总成进行了动力学分析,并进行了模态计算。对左右阀室盖板的整体刚度进行了评估。得到了发动机罩的模态频率和模态。根据计算结果,对阀室盖的设计方案进行了优化。对改进后的普通罩进行了模态分析,得到了最终的优化方案,为后续发动机罩室罩的设计提供了参考。根据它。与原方案相比,改进方案左阀室盖频率为1676Hz,比原方案1577Hz提高6.28%;右阀室盖装配状态下的一阶模态频率(1729Hz)比原方案高14.88%。
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引用次数: 0
Patterning Cr Film by Passing Electric Current through a Traversing Pointy Stylus: Introduction to Electrolithography and Its Prospects 电流通过横贯尖笔的铬膜图案化:电光刻技术简介及展望
Praveen Kumar, R. Pratap, S. Talukder, Sumit Kumar, Vijayendra Shastri, Raman Maurya, Mruthyunjaya Swamy K B
Here, we introduce electrolithography, which is a recently developed lithography technique. Upon passage of electric current through a pointy cathode electrode placed on Cr film leads to formation and liquefaction of a Cr compound, which then flows away from the cathode in a radially symmetric fashion, thereby removing the Cr layer. If the pointy electrode, akin to a stylus, is traversed along a path, a trench will be patterned in the Cr film, which can then be transferred to other materials. Firstly, we describe the process of electrolithography and then we discuss the effects of the force applied on the stylus and the polymer layer placed in between substrate and Cr film on this lithography process. Finally, we discuss future prospects of electrolithography.
在这里,我们将介绍一种最新发展起来的光刻技术——电光刻技术。当电流通过放置在Cr膜上的尖阴极电极时,导致Cr化合物的形成和液化,然后Cr化合物以径向对称的方式从阴极流出,从而去除Cr层。如果尖电极(类似于触控笔)沿着一条路径穿过,就会在Cr膜上形成沟槽,然后可以将其转移到其他材料上。首先,我们描述了电光刻的过程,然后讨论了施加在触控笔上的力和放置在衬底和Cr膜之间的聚合物层对电光刻过程的影响。最后,对电光刻技术的发展前景进行了展望。
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引用次数: 1
A Label-Free Electrochemical Biosensor Based on Ligand-Receptor Interaction 基于配体-受体相互作用的无标记电化学生物传感器
Xiyuan Liu, Ru Zhang, C. Rejeeth, Sohel Rana, D. Gurav, Kun Qian
We demonstrated a label-free electrochemical biosensor for detection of cell surface receptor (CSR) based on ligand-receptor interaction between its corresponding bioactive substance (BS) and the cell membrane receptor. The biosensor was fabricated through layer-by-layer (LBL) deposition method using chitosan (Chi) and bioactive substance conjugated multi-walled carbon nanotubes (MWCNTs-BS). Our optimized CSR detection approach using the designer biosensor yielded a linear detection range wildly from 1 ng/mL to 10,000 ng/mL, achieving the limit of detection (LOD) of 0.106 ng/mL.
我们展示了一种基于其相应的生物活性物质(BS)与细胞膜受体之间的配体-受体相互作用的无标记电化学生物传感器,用于检测细胞表面受体(CSR)。以壳聚糖(Chi)和生物活性物质偶联多壁碳纳米管(MWCNTs-BS)为材料,采用逐层沉积法制备了生物传感器。我们使用设计生物传感器优化的CSR检测方法产生了从1 ng/mL到10,000 ng/mL的线性检测范围,达到了0.106 ng/mL的检测限(LOD)。
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引用次数: 0
Crosstalk Analysis and Optimization of Gaussian Networks-on-Chip 片上高斯网络的串扰分析与优化
Yingxue Du, Yiyuan Xie
Gaussian-based optical networks-on-chips (ONoCs) have significant topological advantages over mesh and torus networks in terms of network diameter and average jump distance. However, the crosstalk noise that accumulates in the network can cause severe performance degradation and limit the scalability of the network. Therefore, this paper analyzes the three aspects of basic optical elements, optical router and network, and proposes a Gaussian-based ONoCs worst-case crosstalk noise and signal-to-noise ratio (SNR) analysis model. In addition, we use Cygnus and crossbar optical routers for numerical simulations to verify the feasibility of the proposed analytical model. In order to improve the availability of Gaussian networks, we propose an optimization method to improve network performance that can effectively avoid the worst case.
基于高斯的片上光网络(ONoCs)在网络直径和平均跳距方面比网状和环面网络具有显著的拓扑优势。然而,在网络中积累的串扰噪声会导致严重的性能下降并限制网络的可扩展性。因此,本文从基本光学元件、光路由器和网络三个方面进行分析,提出了一种基于高斯的ONoCs最坏串扰噪声和信噪比分析模型。此外,我们使用Cygnus光路由器和十字棒光路由器进行数值模拟,以验证所提出的分析模型的可行性。为了提高高斯网络的可用性,我们提出了一种能够有效避免最坏情况的优化方法来提高网络性能。
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引用次数: 0
Nanofabrication Techniques Used for Suppressing Multipactor in Space Applications 在空间应用中用于抑制多因子的纳米制造技术
Jing Yang, W. Cui, Guibai Xie, Y. Bao, M. Ye, Qiangqiang Song
A significant trouble in high power microwave (HPM) systems is multipactor discharge – an avalanche of electrons resulting from the secondary electron emission (SEE). It would cause serious problems and limits the attainable power. Nano fabrication techniques, such as sputtering, photolithography, etching and Graphene, are adopted to reduce the secondary electron yield (SEY) of a material to improve multipactor discharge threshold. It is clearly demonstrated that these fabrications can suppress the SEY efficiently. The influence of surface characteristic on SEY is discussed to find that increase porosity and aspect ratio will reduce SEY. These results provided a criterion to determine nanofabrication techniques for multipactor suppression.
高功率微波(HPM)系统的一个重要问题是多因子放电——由二次电子发射(SEE)引起的电子雪崩。这将导致严重的问题,并限制可获得的权力。采用溅射、光刻、蚀刻和石墨烯等纳米制造技术来降低材料的二次电子产率(SEY),以提高多因子放电阈值。结果清楚地表明,这些结构可以有效地抑制SEY。讨论了表面特性对孔隙度和纵横比的影响,发现孔隙度和纵横比的增加会降低孔隙度。这些结果为确定多因子抑制的纳米制造技术提供了一个标准。
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引用次数: 1
A Method of Studying the Effect of Stress and Thermal-stress Coupling on the Thermal Conductivity of the Film 一种研究应力和热应力耦合对薄膜导热性影响的方法
Zhibin Li, Hairong Wang, Huiying Zhao, Hanqing Gu, Jiuhong Wang, Yizhen Ding
This paper designs a film stress device which can apply stress to the film attached to a substrate, and describes the detailed structure of the film stress device, the strain of the central region of the film can be equal, the film strain calculation method and the derivation process are given, it can adjust the strain of the film by controlling the feed displacement of the device. The testing system is designed by combining the film stress device with the 3ω method, it can be used to study the effect of stress and thermal-stress coupling on the thermal conductivity of the film, the 3ω thermal conductivity method is analyzed.
本文设计了一种能对附着在基板上的薄膜施加应力的薄膜应力装置,并详细介绍了薄膜应力装置的结构,薄膜中心区域的应变可以相等,给出了薄膜应变的计算方法和推导过程,它可以通过控制装置的进给位移来调节薄膜的应变。通过将薄膜应力装置与3ω法相结合设计了测试系统,可用于研究应力和热应力耦合对薄膜导热系数的影响,并对3ω导热系数法进行了分析。
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引用次数: 0
期刊
2018 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO)
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