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1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｂｅｃａｕｓｅｏｆｔｈｅｃｏｍｂｉｎａｔｉｏｎｏｆａｎｕｍｂｅｒｏｆｆａｖｏｒａｂｌｅｐｒｏｐｅｒｔｉｅｓ,ｓｕｃｈａｓｈｉｇｈｈａｒｄｎｅｓｓ,ｈｉｇｈｃａｒｒｉｅｒｍｏｂｉｌｉｔｙａｎｄｂｒｅａｋｄｏｗｎｖｏｌｔａｇｅ,ｌａｒｇｅｂａｎｄｇａｐ ,ｌｏｗｄｉｅｌｅｃｔｒｉｃｃｏｎｓｔａｎｔ,ａｎｄｔｒａｎｓｐａｒｅｎｃｙｔｏｖｉｓｉｂｌｅｌｉｇｈｔ,ＩＲｌｉｇｈｔａｎｄｍｉｃｒｏｗａｖｅｓ,ｅｔｃ.[1] ,ｄｉａｍｏｎｄｆｉｌｍｈａｓｂｅｅｎｃｏｎｓｉｄｅｒ ａｂｌｙｐｒｏｍ… 相似文献
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INTRODUCTION Monocrystalline SBN (Strontium barium nio-bium, SrxBa1?xNb2O6, denoted SBNx?100, where 0.25≤x≤0.75) solid solution, is currently being inves-tigated as potential material for many micro-device applications, such as piezoelectric infrared detectors, piezoelectric, electro-optic modulators, and holo-graphic storage (Koch et al., 1998), because SBN has one of the largest known linear electro-optic coeffi-cients (r33=1300 pm/V for SBN75), two orders of magnitude larger th… 相似文献
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研究了利用RFCVD技术,在铝片等基体表面沉积类金刚石膜。对膜的硬度、电阻率、附着力进行分析发现,在合适的气体流量比和射频功率密度下,这些性能可显著提高。 相似文献
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Xia A-gen Ye Jian-ting Ye Quan-lin Tao Xiang-ming Jin Jin-sheng Ye Gao-xiang 《浙江大学学报(A卷英文版)》2001,2(4):379-383
A new aluminum thin film percolation system, deposited on glass and silicon wafer surfaces by a vapor deposition method, was
investigated. By using the expansive and mobile behaviors of the silicone oil, the Al films are quenched gradually by the
silicone oil during the deposition process. TheR-I behavior of the film system was studied, and the anomalous conductivity indicated that, at very low current, the hopping
and tunneling effects in the films are much stronger than those of the normal film systems.
Project supported by NSFC (Grant No. 19874016) and the Special Fund of Zhejiang Provincial Natural Science Foundation for
Young Scientists (Grant No. 1997-RC9603). 相似文献
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采用溶胶凝胶(sol-gel)法,在普通载玻片上成功制备ZnO薄膜,对于不同退火温度样品采用X射线衍射仪(XRD)、原子力显微镜(AFM)、紫外可见分光光度计(UVS)及光致荧光光谱(PL)对样品的结构、形貌和光学特性进行表征.XRD谱表明在300℃、400℃、500℃退火处理的样品都有较好的c轴择优取向,而且随着退火温度的升高择优取向明显改善.透射谱中能观察到明显的ZnO吸收边.用AFM观察到的样品表面形貌表明,退火温度提高使样品表面更加平整,同时粒径变大.PL谱中在380nm附近可观察到明显发光峰. 相似文献
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Low-Temperature Plasma Induced Grafting of 2-Methacryloyloxyethyl Phosphorylcholine onto Poly（tetrafluoroethylene） Films 总被引：1，自引：0，他引：1
Modification of poly(tetrafluoroethylene) (PTFE) films with 2-methacryloyloxyethyl phosphorylcholine (MPC) was performed by
low-temperature plasma treatment and grafting polymerization. Surface properties of PTFE were characterized by attenuated
total reflectance Fourier transform infrared (ATR-FTIR) spectra, X-ray photoelectron spectroscopy (XPS), and static contact
angle. The results show that MPC has been grafted onto PTFE film surface successfully. Contact angle for the modified PTFE
films in the water decreased from 108° to 58.25°, while surface energy increased from 17.52 mN/m to 45.47 mN/m. The effects
of plasma treatment time, monomer concentration and grafting time on degree of grafting were determined. In the meanwhile,
blood compatibility of the PTFE films was studied by checking thrombogenic time of blood plasma. 相似文献
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ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｍｉｃｒｏｓｔｒｕｃｔｕｒｅｏｆｔｈｉｎｆｉｌｍｓｐｌａｙｓａｃｒｕ ｃｉａｌｒｏｌｅｉｎａｗｉｄｅｖａｒｉｅｔｙｏｆｐｈｙｓｉｃａｌｐｒｏｃｅｓｓｅｓ.Ｔｈｅｒｅａｒｅｃｌｅａｒｅｖｉｄｅｎｃｅｓｔｈａｔｍａｎｙｐｈｙｓｉｃａｌｐｒｏｐｅｒｔｉｅｓｏｆａｔｈｉｎｆｉｌｍｖａｒｙｄｒａｍａｔｉｃａｌｌｙａｓｉｔｓｍｉｃｒｏｓｔｒｕｃｔｕｒｅｃｈａｎｇｅｓ (Ｈａｕｓｅｔａｌ.,1 987) .Ｆｏｒｉｎｓｔａｎｃｅ,ｒｏｕｇｈｓｕｂｓｔｒａｔｅｓｃａｎｂｅｕｓｅｄｔｏｆａｂｒｉｃ… 相似文献
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Low valence vanadium oxide（VO2-x） thin films were prepared on SiO2/Si substrates at room temperature by direct current facing targets reactive magnetron sputtering, and then processed through rapid thermal annealing. The effects of the annealing on the structure and phase transition property of VO2 were discussed. X-ray photoelectron spectroscopy, X-ray diffraction technique and Fourier transform infrared spectroscopy were employed to study the phase composition and structure of the thin films. The resistance-temperature property was measured. The results show that VO2 thin film is obtained after annealed at 320℃ for 3 h, its phase transition temperature is 56 ℃, and the resistance changes by more than 2 orders. The vanadium oxide thin films are applicable in thermochromic smart windows, and the deposition and annealing process is compatible with micro electromechanical system process. 相似文献
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In的掺杂对化学水浴沉积SnS薄膜电阻率的影响 总被引：1，自引：0，他引：1
SnS and SnS：In films were deposited onto glass substrates by chemical bath technique. The structure and surface morphology of the SnS：In films were studied by X-ray diffraction （XRD） and scanning electron microscope （SEM） respectively. Energy dispersive spectroscopy （EDS） showed the existence of In in the films. The undoped SnS film exhibited a rather high resistivity and InCl3 could reduce the resistivity of these films by two orders approximately. The band gaps of the SnS and SnS：In films were evaluated from the optical transmission spectra. 相似文献
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ＳｗｉｔｃｈｉｎｇＰｈｅｎｏｍｅｎａｏｆＣｕＴＣＮＱＩｎｄｕｃｅｄＭａｉｎｌｙｂｙｔｈｅＩｎｔｅｒａｃｔｉｏｎａｍｏｎｇＭｉｃｒｏｃｒｙｓｔａｌｉｎｅＧｒａｉｎｓＧｕＮｉｎｇａ１（顾宁）ＳｈｅｎｇＨａｏｙｉｎｇｂ（沈浩瀛）ＬｕＷｕａ１（鲁武）Ｐａｎ... 相似文献
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采用等离子体增强化学气相沉积技术制备了硼掺杂氢化非晶硅薄膜,然后经过不同温度的热退火处理,获得硼掺杂纳米硅薄膜．结果表明,退火温度为700℃时,样品中开始有纳米晶形成,随着退火温度的增加,在1000℃时,薄膜的晶化率达到77％,晶粒大小为3．9nm．退火温度低于600℃时,光学带隙随着退火温度的升高而变窄,高于600℃... 相似文献
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在0.3mol/L草酸中采用阳极氧化法制备了多孔氧化铝纳米材料,原子力显微镜观测孔径约为55nm.利用物理吸附,在纳米孔中填入有机荧光分子Rh6G,与溶液中的发光现象相比,Rh6G的光谱发生了蓝移,表明有机分子填入高度有序的AAO纳米孔中时,有机分子的聚集形式发生改变,纳米孔中Rh6G的发光接近于单分子发光行为. 相似文献
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显微镜自动载物台及图像采集自动化研究 总被引：1，自引：0，他引：1
在普通光学显微镜上加装电动载物台，利用PC机与单片机通信来控制载物台的三维运动。以基于VFW的USB摄像头图像采集系统，构造了低成本的显微镜电动载物台改造方案，实现自动聚焦。图像的自动采集。 相似文献
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王万录 《重庆大学学报(英文版)》2003,2(2)
1. Introduction Recently, carbon nanotubes have attracted a lot of interest because of their outstanding electrical properties and their potential application as a possible material for fabrication of cold cathodes [1-3]. It was found that the field enhancement from carbon nano-tubes exhibited large local field enhancement and considerable field emission currents at relatively low applied voltage. Carbon nanotube-based field emission displays have been fabricated using well-aligned nano-tubes … 相似文献
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用凝胶溶胶（sol—gel）法在普通截玻片和si上生长了稀土La掺杂ZnO薄膜,稀土La^3＋离子和Zn^2＋浓度摩尔比分别为1％,2％,3％．通过X射线衍射仪（XRD）、紫外可见分光光度计（UVS）、原子力显微镜（AFM）、光致发光（PL）等对薄膜的结构、光学特性、形貌进行表征,结果显示不同浓度La掺杂的ZnO薄膜均为六角纤锌矿结构,薄膜表面颗粒均匀平整,随着掺杂浓度的提高,La掺杂ZnO薄膜的紫外发光峰出现蓝移现象． 相似文献
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纯镁及AZ61镁合金在磷酸盐中形成转化膜后,分别在水、碱溶液及钒盐溶液中进行封闭处理.采用点滴腐蚀试验、孔隙率测试和模拟海水浸泡法对封闭后的膜层的耐腐蚀性能进行研究,用显微镜对腐蚀前后的微观形貌进行了观察,讨论了腐蚀机理.试验表明,在水中封闭的膜层的耐蚀性最好,膜层的孔隙率最低;纯镁的表面转化膜层的耐海水腐蚀性能比镁合金AZ61的表面转化膜层耐海水腐蚀性能好. 相似文献
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lintroductionDiamondisawide-band-semiconductorwithauniquealldextraordinalycombinationofelectronicpropelties(highbreakdownvoltagel"'l,electron/holemobilityl']andcall.iel'saturationvelocityl#]),mechanicalpropelties(highhardnessandstrength)andotherproperties… 相似文献