共查询到19条相似文献,搜索用时 156 毫秒
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综述了国内外近年来制备超疏水表面的方法;重点介绍了4种简易制备粗糙表面的方法(溶胶-凝胶法、相分离法、化学气相沉积法、模板法),并探讨了其优缺点及发展方向;介绍了超疏水表面的应用,提出了未来超疏水表面制备所面临的问题. 相似文献
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硅纳米线的制备与生长机理 总被引:1,自引:0,他引:1
硅纳米线是一种新型的一维半导体光电材料.本文较系统地介绍了硅纳米线在制备技术、生长机理方面的研究现状与最新进展,主要就激光烧蚀法、化学气相沉积法、热气相沉积法及溶液法等制备方法和基于气-液-固机理的生长机理、氧化物辅助生长机理及固-液-固生长机理等作了较为详尽的论述. 相似文献
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评述了制备二氧化钛薄膜的液相法、气相法和电化学法3大类方法的优缺点,以及3大类方法所包含的溶胶-凝胶、微乳液、磁控溅射、物理气相沉积、化学气相沉积、阳极氧化和微弧氧化等方法制备二氧化钛薄膜的工艺步骤、特点及研究进展.文章最后指出,液相法由于自身存在的优点,仍将是今后二氧化钛薄膜制备和研究的重点;而光催化性能更好的掺杂二氧化钛,其研究重点是探讨掺杂方式、制备方法和优化配比等. 相似文献
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总结了激光技术制备纳米粉末的特点,介绍了激光诱导化学气相沉积法、激光烧蚀法、激光诱导液-固界面反应法以及激光-感应复合加热法等的基本原理、装置及特点,综述了目前纳米粉体激光制备技术的应用研究现状,指出了其今后的研究方向和应用前景. 相似文献
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重油残渣基新型碳功能材料的研究进展 总被引:1,自引:0,他引:1
综述了以重油残渣为原料,采用化学气相沉积法、共炭化法和微波等离子体法可控制备气相生长碳纤维、碳微球、内包铁洋葱状富勒烯、纳米碳管、内包金属碳微米颗粒及定向碳纳米薄膜等各种高附加值碳材料;采用等离子体氧化法、酸处理法、化学还原法等方法对气相生长碳纤维和碳微球进行表面修饰,在产物表面引入含氧官能团,解决了可溶性碳材料的制备问题;在碳微球表面引入Pt纳米颗粒,使重油残渣基新型碳材料在表面修饰和功能化后可望成为性能优异的吸附和催化材料. 相似文献
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Physical Deposition Improved SERS Stability of Morphology Controlled Periodic Micro/Nanostructured Arrays Based on Colloidal Templates 下载免费PDF全文
Honghua Zhang Mao Liu Fei Zhou Dilong Liu Guangqiang Liu Guotao Duan Weiping Cai Yue Li 《Small (Weinheim an der Bergstrasse, Germany)》2015,11(7):844-853
An effective and inexpensive method is developed to fabricate periodic arrays by sacrificial colloidal monolayer template route by chemical deposition and further physical deposition. By a colloidal template induced precursor solution dipping strategy, different periodic arrays of semi‐hollow sphere array, inverse opal with monolayer pore arrays and hole arrays are obtained under different conditions. After magnetron sputtering deposition, their morphologies are changed to novel micro/nanostructured arrays of honeycomb‐shaped arrays, hollow cavity arrays, and regular network arrays due to multiple direction deposition of sputtering deposition and shadow effect. After coating a gold thin layer, these periodic micro/nanostructured arrays are used as SERS active substrates and demonstrate a very stable SERS performance compared with periodic arrays achieved by direct colloidal template‐induced chemical deposition. Additionally, a honeycomb‐shaped array displays better SERS enhancement than that of a hollow cavity array or a regular network array. After optimization of honeycomb‐shaped arrays with different periodicities, an array with periodicity of 350 nm demonstrates much stronger SERS enhancement and possesses a low detection limit of 10?11 M R6G. Such stable SERS performance is useful for practical application in portable Raman detecting devices to detect organic molecules. 相似文献
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Tianyou Zhai Zhanjun Gu Ying Ma Wensheng Yang Liyun Zhao Jiannian Yao 《Materials Chemistry and Physics》2006,100(2-3):281-284
Semiconductor ZnS nanotubes arrays were synthesized in the pores of the porous anodic alumina (PAA) membranes by using metal organic chemical vapor deposition (MOCVD) template methods. The morphology and structure of the ZnS nanotubes were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected-area electron diffraction (SAED) and X-ray diffraction (XRD). It is found that the ZnS nanotubes with diameters in range of 140–250 nm and the length up to tens of microns are polycrystalline. Energy-dispersion spectroscopy (EDS) and X-ray photoelectron spectroscopy analysis (XPS) indicate that the stoichiometric ZnS was formed. A green-blue emission band centered at 510 nm was observed in the photoluminescence spectrum of the ZnS nanotubes. 相似文献
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《材料科学技术学报》2015,(6)
Two types of ordered InP nanowire arrays have been prepared on the same anodic aluminum oxide template by a template-assisted metallo-organic chemical vapor deposition technique.When using template with an appropriate pore size,free-standing wires on the template surface and highly ordered wires in the nanochannels of the same template can be simultaneously achieved.The highly ordered InP nanowire arrays in the nanochannels serve as an n-type semiconductor to assemble the p-n heterojunction solar cell with p-type Cu_2O.Such a Cu_2O/lnP p-n heterojunction solar cell possesses a power conversion efficiency of 1.55%. 相似文献