检索结果-南通市图书馆

design and Characterization of a Top Cladding for Silicon-on-Insulator Grating Coupler

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2012年第11期29卷 105-107页

作者： Nemkova Anastasia XIAO Xi YANG Biao CHU Tao yu Jin-Zhong yu yu-de State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083

An effective top cladding for silicon-on-insulator grating coupler is designed and the validity of the design is confirmed *** proposed double-layer silicon oxide/silicon nitride(SiO_(2)/Si_(3)N_(4))cladding demonstrates antireflection properties and affects a coupling strength of the grating structure.A coupling efficiency of 65%is obtained after cladding layer deposition.

关键词： cladding coupling fir

High Efficiency Grating Coupler for Coupling between Single-Mode Fiber and SOI Waveguides

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2013年第1期30卷 99-102页

作者： ZHANG Can SUN Jing-Hua XIAO Xi SUN Wei-Min ZHANG Xiao-Jun CHU Tao yu Jin-Zhong yu yu-de College of Science Harbin Engineering UniversityHarbin 150001 State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083

A high efficiency grating coupler between single-mode fiber and silicon-on-insulator waveguide is designed by a formula *** 78.5%coupling efficiency(>-1.05 dB)with 3 dB bandwidth about 50 nm for one grating coupler is obtained experimentally and this result is the highest one as far as we *** grating coupler is CMOS compatible which needs only one etch-step and is designed for a standard SOI chip without any Bragg reflector or bottom reflector.

关键词： SOI waveguide Efficiency

A Compact and Highly Efficient Silicon-Based Asymmetric Mach–Zehnder Modulator with Broadband Spectral Operation

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2011年第7期28卷 122-125页

作者： ZHOU Liang LI Zhi-Yong XIAO Xi XU Hai-Hua FAN Zhong-Chao HAN Wei-Hua yu yu-de yu Jin-Zhong State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083 Engineering Research Center for Semiconductor Integrated Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083

An asymmetric Mach–Zehnder electro-optic modulator is demonstrated by using a silicon-based p-i-n diode embedded in compact 200µm long phase *** measured figure of merit VπL=0.23 V⋅mm shows highly efficient modulation by the device,and an open eye−diagram at 3.2 Gbit/s confirmed its fast electro-optic *** with the grating coupler,the device exhibits a broad operational wavelength range of 70 nm with a uniform 18 dB extinction ratio covering the C−band and part L-band of optical communication.

关键词： modulator Highly Compact

Attenuation of myocardial apoptosis by alpha-lipoic acid through suppression of mitochondrial oxidative stress to reduce diabetic cardiomyopathy

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Medical Journal 2009年第21期122卷 2580-2586页

作者： LI Chun-jun ZHANG Qiu-mei LI Ming-zhen ZHANG Jing-yun yu Pei yu de-min The Ministry of Health Key Laboratory of Hormone and development Department of Endocrinology Metabolic Disease Hospital of Tianjin Medical University Tianjin 300070 China

Background Cardiac failure is a leading cause of the mortality of diabetic patients. In part this is due to a specific cardiomyopathy, referred to as diabetic cardiomyopathy. Oxidative stress is widely considered to be one of the major factors underlying the pathogenesis of the disease. This study aimed to test whether the antioxidant α-lipoic acid （α-LA） could attenuate mitochondrion-dependent myocardial apoptosis through suppression of mitochondrial oxidative stress to reduce diabetic cardiomyopathy. Methods A rat model of diabetes was induced by a single tail intravenous injection of streptozotocin （STZ） 45 mg/kg. Experimental animals were randomly assigned to 3 groups： normal control （NC）, diabetes （DM） and DM treated with α-LA （α-LA）. The latter group was administered with a-LA （100 mg/kg ip per day）, the remainder received the same volume vehicle. At weeks 4, 8, and 12 after the onset of diabetes, cardiac apoptosis was examined by TUNEL assay. Cardiomyopathy was evaluated by assessment of cardiac structure and function. Oxidative damage was evaluated by the content of malondialdehyde （MDA）, reduced glutathione （GSH） and the activity of manganese superoxide diamutase （Mn-SOD） in the myocardial mitochondria. Expression of caspase-9 and caspase-3 proteins was determined by immunohistochemistry and mitochondrial cytochrome c release was detected by Western blotting Results At 4, 8, and 12 weeks after the onset of diabetes, significant reductions in TUNEL-positive cells, caspase-9,-3 expression, and mitochondrial cytochrome c release were observed in the α-LA group compared to the DM group. In the DM group, the content of MDA in the myocardial mitochondria was significantly increased, and there was a decrease in both the mitochondrial GSH content and the activities of Mn-SOD. They were significantly improved by α-LA treatment. HE staining displayed structural abnormalities in diabetic hearts, while α-LA reversed this structural derangement. The index of cardiac fun

关键词： alpha-lipoic acid myocardial apoptosis mitochondrial oxidative stress diabetic cardiomyopathy

在线全文

学校读者我要写书评

暂无评论

硅基光子集成研究进展

物理学报 2014年第10期63卷 1-8页

作者：周培基李智勇俞育德余金中中国科学院半导体研究所集成光电子学国家重点实验室北京100083

报道了国际上关于硅基光子集成的最新研究进展和本课题组在该领域的研究成果,包括对一些光收发模块、III-V族/硅基激光器等集成器件的结构改进和工艺的探索,展示了兼容互补金属氧化物半导体工艺的硅基光子集成在信息技术领域中的巨大前... 详细信息

报道了国际上关于硅基光子集成的最新研究进展和本课题组在该领域的研究成果,包括对一些光收发模块、III-V族/硅基激光器等集成器件的结构改进和工艺的探索,展示了兼容互补金属氧化物半导体工艺的硅基光子集成在信息技术领域中的巨大前景.可以预见,硅基光子集成已成为硅光子学的主要研究内容,硅光子学及硅基光子集成的发展目标是趋向更高速率、更低功耗及更大集成密度.

关键词：硅光子学光子集成光子集成回路光电子集成

一种基于光学集成芯片的紧凑型结构光产生系统

在线全文

学校读者我要写书评

暂无评论

红外与毫米波学报 2020年第3期39卷 273-278页

作者：王辰俞育德李芳李智勇中国科学院大学材料科学与光电技术学院北京100049 中国科学院半导体研究所集成光电子学国家重点实验室北京100083

过去的几十年中,结构光照明在三维立体成像和计算机视觉有着重要的应用。然而,传统结构光产生系统结构复杂、体积庞大,这严重限制了它的潜在应用价值。提出了一种用于产生结构光的紧凑型的光电集成芯片,这种芯片基于绝缘体上的硅(SOI)... 详细信息

过去的几十年中,结构光照明在三维立体成像和计算机视觉有着重要的应用。然而,传统结构光产生系统结构复杂、体积庞大,这严重限制了它的潜在应用价值。提出了一种用于产生结构光的紧凑型的光电集成芯片,这种芯片基于绝缘体上的硅(SOI)材料。该方法具有结构简单、输出稳定、设计灵活等优势。不同于传统的结构光发生系统,该方法中,光束的强度及相位调制以及光束间的相互干涉都是由片上系统操控的。这有效避免了外界扰动对光斑质量的影响,同时提升了系统的便携性。实现了全片上调控的红外结构光产生系统。该结构光芯片大小仅为0.5×0.5 mm,可以产生约200×200μm的结构光照明区域。芯片照明区域的大小和结构光的单元结构周期与光栅的结构设计和光源波长相关。此外,通过设计合理地设计芯片上的元件布局,我们可以得到多种不同结构的照明图样。

关键词：集成光学结构光片上光栅

在线全文

学校读者我要写书评

暂无评论

硅基光栅耦合器的研究进展

物理学报 2013年第18期62卷 254-260页

作者：杨彪李智勇肖希 Nemkova Anastasia 余金中俞育德中国科学院半导体研究所集成光电子学国家重点实验室北京100083

硅基光子集成芯片的研究近年来发展迅速,已成为信息技术领域中最热门的研究方向之一,光通信、光互连、光传感等相关研发应用机构高度关注其发展,并积极介入.硅基光子集成芯片中,光栅耦合器作为光信号的输入和输出装置受到极大重视,尤其... 详细信息

硅基光子集成芯片的研究近年来发展迅速,已成为信息技术领域中最热门的研究方向之一,光通信、光互连、光传感等相关研发应用机构高度关注其发展,并积极介入.硅基光子集成芯片中,光栅耦合器作为光信号的输入和输出装置受到极大重视,尤其在封装和测试等环节体现出极具价值的技术优势.本文主要分析了光栅耦合器的工作原理、基本特性及国内外的发展现状和趋势,同时也概括了本课题组近期在该方向上的研究成果.

关键词：光栅耦合器耦合效率绝缘体上硅光子集成

Nanostructured ZnO/BiVO_(4)I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 488-497页

作者： Yiling Li Xiaoyao yu Yingjie Zhou Yao Lin Ying Wu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Materials ScienceZhejiang Normal UniversityJinhua 321004China

BiVO_(4)porous spheres modified by ZnO were designed and synthesized using a facile two-step *** resulting ZnO/BiVO_(4)composite catalysts have shown remarkable efficiency as piezoelectric catalysts for degrading Rhodamine B(RhB)unde mechanical vibrations,they exhibit superior activity compared to pure *** 40wt%ZnO/BiVO_(4)heterojunction composite displayed the highest activity,along with good stability and *** enhanced piezoelectric catalytic activity can be attributed to the form ation of an I-scheme heterojunction structure,which can effectively inhibit the electron-hole ***,hole(h+)and superoxide radical(·O_(2)^(-))are proved to be the primary active ***,ZnO/BiVO_(4)stands as an efficient and stable piezoelectric catalyst with broad potential application in the field of environmental water pollution treatment.

关键词： piezoelectric catalytic heterojunction dye degradation ultrasonic vibration

在线全文

学校读者我要写书评

暂无评论

一种基于SU8聚合物的基因测序芯片

物理学报 2013年第14期62卷 496-503页

作者：韩伟静魏清泉李运涛周晓光俞育德中国科学院半导体研究所集成光电子学国家重点实验室北京100083 中国科学院半导体研究所中国科学院北京基因组研究所生物信息获取与传感技术联合实验室北京100083

基因测序技术极大地推动了生物学和医学研究的发展.结合了焦磷酸测序原理及阵列式微反应池芯片的高通量测序仪在从头测序和宏基因组测序方面有着不可替代的作用.本文首次提出并研制了一种基于SU8聚合物的基因测序芯片.选择了高传输效率... 详细信息

基因测序技术极大地推动了生物学和医学研究的发展.结合了焦磷酸测序原理及阵列式微反应池芯片的高通量测序仪在从头测序和宏基因组测序方面有着不可替代的作用.本文首次提出并研制了一种基于SU8聚合物的基因测序芯片.选择了高传输效率、低耦合损耗的光纤面板作为基片,通过改善SU8均匀性及释放应力,在光纤面板上成功制备出百万数量级阵列式微反应池;设计并制作侧壁镀膜装置,实现了SU8阵列式微反应池侧壁选择性光学薄膜蒸镀,有效地提高了微反应池的光学隔离度,将相邻微反应池之间的光串扰率平均值从25%降低到了1%,满足了高通量焦磷酸测序对测序芯片独立并行传输弱光信号的要求.基于SU8聚合物的基因测序芯片制备工艺简单、成本低廉,具有良好的应用前景.

关键词： DNA测序 SU8 微反应池光纤面板