传真机热印头驱动专用集成电路的研究

论述了采用硅栅ＣＭＯＳ工艺研制的热印头驱动ＡＳＩＣ，它由６４位移位寄存器、６４位锁存器、６４位输出驱动电路和外围缓冲电路组成。其电路性能为：０．５ｋΩ负载电阻情况下，最大输出电流４８ｍＡ，输出管饱和压降１．８Ｖ，输出管击穿电压３．５Ｖ，时钟频率５．２ＭＨｚ，在传真机热印头上使用，可实现高速打印和高分辩率。     

Fabrication of Metallic Crescent-shaped Nanohole Arrays by Combination of Nanoimprint Lithography and Nanotransfer Printing

Molecular detection techniques based on localized surface plasmon resonances shift,surfaced-enhanced Raman spectroscopy,surface-enhanced fluorescence,and plasmon resonance energy transfer are all highly dependent on the intensity of localized electromagnetic fields[1-4].Many different nanostructures were fabricated for sensing.Ebbesen and his co-workers discovered that hole-based "hot spots" could act as optical antennae,which could concentrate the electromagnetic fields into extremely small regions[5].Many efforts have been devoted to understanding this unique transmission phenomenon in the past decade[6-8].     

基于印刷电子的透明导电薄膜研究进展

透明导电薄膜是一种在可见光范围内透光率较高、导电性优良的薄膜材料.近年来随着智能手机、平板电脑等电子产品日益普及,透明导电薄膜受到越来越多的关注.本文分析了目前占据市场统治地位的掺锡氧化铟透明导电薄膜的缺点以及近年来国内外对透明导电薄膜开展的研究工作,总结了目前在印刷电子领域透明导电薄膜的主要研究方向,一方面是在传统金属氧化物薄膜基础上的改进;另一方面是寻找新型透明导电薄膜材料,并分别综述了各个研究方向的最新进展.     

微接触印刷技术转移Au纳米粒子及氧化石墨烯复合图案及其性质研究

通过改良的“Hummers方法”制得氧化石墨烯,利用聚二甲基硅氧烷（PDMS）弹性印章的微接触印刷技术,以Au膜和氧化石墨烯溶液为“墨水”,通过二次印章转移,分别将Au纳米粒子和氧化石墨烯（Graphene Oxide,GO）转移至修饰了(3-氨基丙基)三乙氧基硅烷（APTES）的ITO基底（APTES/ITO）表面. 利用场发射扫描电子显微镜（FE-SEM）、原子力显微镜（AFM）等表征图案,结果表明转移的AuNPs和GO组成的复合图案均匀,致密性较好. 利用表面电势显微镜（Surface Potential Microscope,SEPM,KFM）测定了各部分的表面电势,以APTES/ITO基底表面为表面电势零点,各部分表面电势大小为：APTES/ITO > GO > Au（0,-11.6,-44.2 mV）.     

自适应求交算法在鞋楦变跷设计中的应用

皮鞋鞋楦变跷设计是鞋楦CAD/CAM技术中的重要内容.介绍了在鞋楦离散造型建模下用已知平面切割鞋楦体求交线交点的自适应求交(AT)算法的基本原理,即将已知平面上的交点逼近问题转化为对鞋楦某一截面上所求点的逼近,在此基础上介绍了用该方法在变跷设计中的应用.实现了变跷前后鞋楦数据的相互转换,确保了整个皮鞋鞋楦CAD系统数据格式的统一.给出了算法具体实现思想和应用实例.     

量子点网点导光板的制备及性能研究

为了实现量子点背光源的白平衡,将红量子点和绿量子点与油墨均匀混合,采用丝网印刷的工艺将混合后的量子点浆料印刷到导光板的下表面,作为导光板的网点,在侧边蓝光LED激发下,使红、绿量子点发光并和蓝光共同复合发光。通过调整优化量子点在混合浆料中的比例和红、绿量子点的配比最终实现白平衡。利用OLYMPUS显微镜、F-4600荧光分光光度计和SRC-200M光谱彩色亮度计对量子点网点导光板表面形貌和光学性能进行了表征和分析。实验结果表明:当量子点在混合浆料中的质量分数为7%并且红量子点和绿量子点满足1∶12时,能够实现白平衡,CIE 1931色坐标为(0.330 8,0.327 1),色温为5 588 K,在100 m A的激发电流下亮度可达4.136×10~3cd/m~2,色域为NTSC的122.4%。     

Dye-sensitized solar cell module realized photovoltaic and photothermal highly efficient conversion via three-dimensional printing technology

Three-dimensional(3D) printing technology is employed to improve the photovoltaic and photothermal conversion efficiency of dye-sensitized solar cell(DSC) module. The 3D-printed concentrator is optically designed and improves the photovoltaic efficiency of the DSC module from 5.48% to 7.03%. Additionally, with the 3D-printed microfluidic device serving as water cooling, the temperature of the DSC can be effectively controlled, which is beneficial for keeping a high photovoltaic conversion efficiency for DSC module. Moreover, the 3D-printed microfluidic device can realize photothermal conversion with an instantaneous photothermal efficiency of 42.1%. The integrated device realizes a total photovoltaic and photothermal conversion efficiency of 49% at the optimal working condition.     

A robust hyper-elastic beam model under bi-axial normal-shear loadings

In this paper, a simple and robust constitutive model is proposed to simulate mechanical behaviors of hyper-elastic materials under bi-axial normal-shear loadings in the finite strain regime. The Mooney–Rivlin strain energy function is adopted to develop a two-dimensional (2D) normal-shear constitutive model within the framework of continuum mechanics. A motion field is first proposed for combined normal and shear deformations. The deformation gradient of the proposed field is calculated and then substituted into right Cauchy–Green deformation tensor. Constitutive equations are then derived for normal and shear deformations. They are two explicit coupled equations with high-level polynomial non-linearity. In order to examine capabilities of the developed hyper-elastic model, uniaxial tensile responses and non-linear stability behaviors of moderately thick straight and curved beams undergoing normal axial and transverse shear deformations are simulated and compared with experiments. Fused deposition modeling technique as a 3D printing technology is implemented to fabricate hyper-elastic beam structures from soft poly-lactic acid filaments. The printed specimens are tested under tensile/compressive in-plane and compressive out-of-plane forces. A finite element formulation along with the Newton–Raphson and Riks techniques is also developed to trace non-linear equilibrium path of beam structures in large defamation regimes. It is shown that the model is capable of predicting non-linear equilibrium characteristics of hyper-elastic straight and curved beams. It is found that the modeling of shear deformation and finite strain is essential toward an accurate prediction of the non-linear equilibrium responses of moderately thick hyper-elastic beams. Due to simplicity and accuracy, the model can serve in the future studies dealing with the analysis of hyper-elastic structures in which two normal and shear stress components are dominant.     

陶瓷3D打印技术综述

本文介绍了陶瓷3D打印技术目前的发展状况、主要的成型技术和重要的应用领域,重点介绍3D打印技术在陶瓷方向的应用。回顾了可适用于直接三维打印和立体光固化法打印的氧化物( Al2 O3、ZrO2)和非氧化物( Si3 N4、SiC)陶瓷浆料的最新研究成果及成型技术对制品性能的影响,并展望了陶瓷3D打印技术未来的发展方向。     

杨木木粉/聚乳酸复合材料的制备及其在3D打印上的应用

 以熔融沉积增材制造技术为依据,研究了聚乳酸与杨木木粉熔融复合混合工艺,探索了原料混合比例、挤出条件等,并对挤出的复合材料进行了力学性能和微观性能检测。结果表明,杨木木粉添加量对复合材料有显著性影响,随着木粉添加量的增加,复合材料力学性能降低,当普通杨木粉原料添加量为40%时,弯曲强度降低30.3%,拉伸强度降低26.4%,冲击强度降低82.2%;当特殊杨木粉原料添加量为40%时,弯曲强度降低14.5%,拉伸强度降低22.9%,冲击强度降低72.9%;从材料的流变性能可见,添加杨木木粉后,弹性模量和损耗模量均增加,并且与木粉的添加量呈现正相关;复合材料流体的黏度降低,表明添加木粉后,复合材料的流动性变差,流体阻力增大;应用DSC检测复合材料时发现,复合材料基体的玻璃化转变温度、结晶温度和熔融温度与聚乳酸单体相比没有改变,加入木粉后只改变了熔体的流动性,对熔点没有影响;通过SEM观察,无论原料为何种比例,聚乳酸与木粉结合均比较紧密,混合也很均匀;同时傅里叶变换红外光谱显示,各主要基团没有变化。