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排序方式: 共有200条查询结果,搜索用时 16 毫秒
71.
马建军 《电子工业专用设备》2008,37(4):28-32
简要回顾了光学光刻技术的发展历程,从IC技术节点微细化要求对光刻技术的挑战方面讨论了光学光刻技术的发展趋势及进入32nm技术节点的可能性。 相似文献
72.
Two soft lithographic techniques—topographically directed photolithography (TOP) and near‐field contact‐mode photolithography—have been used to pattern spherical surfaces with features as small as 175 nm. Each technique has the ability to pattern more than a 60° arc of a spherical surface, albeit with distortions at the edge. Use as an optical polarizer demonstrates an application of these types of patterned surface. 相似文献
73.
Cylindrical microfabrication offers the opportunity to fabricate electrical or mechanical devices around the surfaces of cylinders. Standard processes developed for planar substrates such as silicon wafers must be adapted to curved surfaces. This paper focuses on lithography of and connections to cylinders. Results from lithographic testing includes dose exposure curves using laser and electron beam sources as well as the minimal effects of surface curvature on linewidth. Bonding included ultrasonic wedge bonding, silver epoxy, and solder paste. Electrical and mechanical characteristics of these bonding methods are presented. 相似文献
74.
Sandra Gilmour Stephen V. Kershaw Richard A. Pethrick Philip Pantelis Steven Cassidy John N. Sherwood 《Advanced functional materials》1992,1(4):197-201
A wide range of applications which involve organic crystalline materials require the metallisation of low-molecular-weight compounds. Conventional lithographic techniques used in silicon fabrication technology use high-temperature processing methods which are unsuitable for organic materials. Gold/titanium bilayer and shadow-masking techniques were found to provide suitable solutions to the problem of metallisation of these materials and allowed fabrication of a surface acoustic wave (SAW) device with (–)-2-α-methylbenzylamino-5-nitropyridine (MBANP) as substrate. 相似文献
75.
简要论述了集成电路的发展和特大规模集成电路中部份硅生产工艺技术近几年的发展趋势。特大规模集成电路仍然朝着较大直径的硅单片和较小的特征尺寸方向发展。当特大规模集成电路特征尺寸在0.1μm以下时,角度限制散射投影电子束光刻和极紫外线光刻以及离子投影光刻等光刻技术是较佳侯选者。离子注入掺杂技术将向高能量与低量离子注入领域发展。淀积可靠耐用的TiN薄膜阻挡层是下一步溅射工艺的发展目标。集成电路的生产将向自动化方向发展。 相似文献
76.
77.
Rosalba Sortino Marina Cunquero Gustavo Castro-Olvera Ricard Gelabert Miquel Moreno Fabio Riefolo Carlo Matera Noèlia Fernàndez-Castillo Luca Agnetta Michael Decker José M. Lluch Jordi Hernando Pablo Loza-Alvarez Pau Gorostiza 《Angewandte Chemie (International ed. in English)》2023,62(51):e202311181
To interrogate neural circuits and crack their codes, in vivo brain activity imaging must be combined with spatiotemporally precise stimulation in three dimensions using genetic or pharmacological specificity. This challenge requires deep penetration and focusing as provided by infrared light and multiphoton excitation, and has promoted two-photon photopharmacology and optogenetics. However, three-photon brain stimulation in vivo remains to be demonstrated. We report the regulation of neuronal activity in zebrafish larvae by three-photon excitation of a photoswitchable muscarinic agonist at 50 pM, a billion-fold lower concentration than used for uncaging, and with mid-infrared light of 1560 nm, the longest reported photoswitch wavelength. Robust, physiologically relevant photoresponses allow modulating brain activity in wild-type animals with spatiotemporal and pharmacological precision. Computational calculations predict that azobenzene-based ligands have high three-photon absorption cross-section and can be used directly with pulsed infrared light. The expansion of three-photon pharmacology will deeply impact basic neurobiology and neuromodulation phototherapies. 相似文献
78.
Edson J. Carvalho Marco A.R. Alves Lucila Cescato 《Microelectronic Engineering》2010,87(12):2544-2548
We propose and demonstrate a simple and low cost process for the fabrication of large area arrays of nanometric silicon tips, for use as Field Emission Devices (FEDs). The process combines Interference Lithography (IL) with isotropic Reactive Ion Etching (RIE). Si tips with typical curvature radius of 20 nm and height of 900 nm were recorded with a periodicity of 1 μm (density of 106 tips/mm2) covering a Silicon wafer of 2 in. The measurement of the electrical performance of the arrays demonstrates the feasibility of the association of these two techniques for recording Field Emission Tips. 相似文献
79.
80.
Margarete Zoberbier Erwin Hell Kathy Cook Marc Hennemayer Barbara Neubert 《电子工业专用设备》2010,39(10):26-31
目前,3D集成技术的优势正在扩展消费类电子产品的潜在应用进入批量市场。这些新技术也在推进着当前许多生产工艺中的一些封装技术包括光刻和晶圆键合成为可能。其中还需要涂胶,作图和蚀刻结构。探讨一些与三维互连相关的光刻技术的挑战。用于三维封装的晶圆键合技术将结合这些挑战和可用的解决方案及发展趋势一并介绍。此外还介绍了一种新的光刻设备,它可通过图形识别技术的辅助实现低于0.25μm的最终对准精度。对于采用光刻和晶圆级键合技术在三维互连中的挑战,趋势和解决方案及SUSS公司设备平台的整体介绍将根据工艺要求来描述。在这些技术中遇到的工艺问题将集中在晶圆键合和光刻工序方面重点讨论。 相似文献