共查询到18条相似文献,搜索用时 74 毫秒
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对影响重络酸盐明胶(DCG)干版性质、曝光记录及后处理过程中的有关质量因素进行了分析,通过实验研究,给出了解决问题的方法。 相似文献
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全息微光刻中全息掩模衍射特性的理论研究 总被引:1,自引:0,他引:1
通过耦合波理论分析,使用矩阵转换方法,对全息光刻中全息掩模衍射效率进行数值模拟计算,得出了影响全息掩模衍射特性的因素主要是显影前后记录材料平均介电常数的改变、介质的膨胀与收缩以及非共轭再现等,为实验研究提供了理论依据. 相似文献
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叶青 《激光与光电子学进展》2002,39(8):38-39
拟用于可见和红外区的三维光子晶体的制造,较其二维晶体困难得多。其制造技术包括常规光刻与全息光刻。已发展出各种方法以制造三维晶体,包括聚合物球的自装配和光刻图样层的堆叠。但是,用第一种方法制出的晶体头一个样品和下一个无法重复;第二种方法则要求逐层制作图样。现在,牛津大学Andrew Tuberfield和Bob Denning领导的一个组将全息光刻扩展至三维,在一次曝光中产生的三维晶体厚度可达80层。研究者使用发射355 nm光的Q开关三倍频Nd:YAG激光曝光厚10~60 mm的环氧树脂型光刻胶层。光刻胶旋涂到熔凝石英盘上,盘的折射率与厚玻… 相似文献
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通过耦合波理论分析,使用矩阵转换方法,对全息光刻中全息掩模衍射效率进行数值模拟计算,得出了影响全息掩模衍射特性的因素主要是显影前后记录材料平均介电常数的改变、介质的膨胀与收缩以及非共轭再现等,为实验研究提供了理论依据. 相似文献
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Clotaire Chevalier‐César Komla Nomenyo Anna Rumyantseva Anisha Gokarna Agnieszka Gwiazda Gilles Lérondel 《Advanced functional materials》2016,26(11):1787-1792
Zinc oxide thin films are holographically patterned on submicronic scale by direct photodissolution method. The photodissolution process in solution is highly sensitive in the UV range (355 nm). 1D and 2D nanostructures are successfully obtained by this photoresist‐free process. The kinetic of the reaction is studied by recording the transmitted intensity through the evolution of the ZnO film thickness along the reaction time. Application of an electrical potential strongly increases the dissolution rate (1.5 μm min?1) and decreases the pattern formation time. As a first demonstration of the potential of all‐in liquid direct ZnO heterostructuring, selective growth of ZnO nanorods is performed by chemical bath deposition using holographically patterned ZnO films as a substrate. 相似文献
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As one of the most robust and versatile routes to fabricate ordered micro‐ and nanostructures, soft lithography has been extensively applied to pattern a variety of molecules, polymers, biomolecules, and nanomaterials. This paper provides an overview on recent developments employing soft lithography methods to pattern colloidal crystals and related nanostructure arrays. Lift‐up soft lithography and modified microcontact printing methods are applied to fabricate patterned and non‐close‐packed colloidal crystals with controllable lattice spacing and lattice structure. Combining selective etching, imprinting, and micromolding methods, these colloidal crystal arrays can be employed as templates for fabrication of nanostructure arrays. Realization of all these processes is favored by the solvent swelling, elasticity, thermodecomposition, and thermoplastic characteristics of polymer materials. Applications of these colloidal crystals and nanostructure arrays have also been explored, such as biomimetic antireflective surfaces, superhydrophobic coatings, surface‐enhanced Raman spectroscopy substrates, and so on. 相似文献
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对X射线掩模电子束制备图形过程建立三维有限元模型,提出用热流密度等效法简化瞬态热应力计算,得到了X射线掩模在电子束直写过程中的瞬态热形变.结果表明,掩模面内形变在直写过程中出现振荡变化,最大值为8.24 nm,方向背离电子束光照中心,掩模面外形变最大值为9.75μm,方向沿图形窗口法线方向,并出现在电子束束斑中心. 相似文献
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Saman Safari Dinachali Mohammad S. M. Saifullah Ramakrishnan Ganesan Eng San Thian Chaobin He 《Advanced functional materials》2013,23(17):2201-2211
Direct patterning of oxides using thermal nanoimprint lithography is performed using either the sol‐gel or methacrylate route. The sol‐gel method results in resists with long shelf‐life, but with high surface energy and a considerable amount of solvent that affects the quality of imprinting. The methacrylate route, which is limited to certain oxides, produces polymerizable resists, leading to low surface energy, but suffers from the shorter shelf‐life of precursors. By combining the benignant elements from both these routes, a universal method of direct thermal nanoimprinting of oxides is demonstrated using precursors produced by reacting an alkoxide with a polymerizable chelating agent such as 2‐(methacryloyloxy)ethyl acetoacetate (MAEAA). MAEAA possesses β‐ketoester, which results in the formation of environmentally stable, chelated alkoxide with long shelf‐life, and methacrylate groups, which provide a reactive monomer pendant for in situ copolymerization with a cross‐linker during imprinting. Polymerization leads to trapping of cations, lowering of surface energy, strengthening of imprints, which enables easy and clean demolding over 1 cm × 2 cm patterned area with ≈100% yield. Heat‐treatment of imprints gives amorphous/crystalline oxide patterns. This alliance between two routes enables the successful imprinting of numerous oxides including Al2O3, Ga2O3, In2O3, Y2O3, B2O3, TiO2, SnO2, ZrO2, GeO2, HfO2, Nb2O5, Ta2O5, V2O5, and WO3. 相似文献
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影响航空图像质量的主要因素分析 总被引:8,自引:1,他引:8
航空图像覆盖范围广,包含巨大的信息量。预先了解影响图像质量的各种原因,有针对性地进行图像质量判别,可以减少信息冗余,提高运算速度。而且,大多数航空图像都没有参考图像,属于绝对图像质量判别范畴。有资料表明,在当前的技术状态下,只有预先了解引起图像降质的原因,对无参考图像进行质量判别才是可行的。本文对影响航空图像的主要因素进行了分析和归纳,并指出了各种因素对图像质量造成的影响,为进行航空图像质量判别提供了方向。 相似文献