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Dynamically Tunable Perfect Absorbers Utilizing Hexagonal Aluminum Nano-Disk Array Cooperated with Vanadium Dioxide

Chinese Physics Letters 2019年第1期36卷 19-23页

作者：周鹏郑改革陈云云咸冯林徐林华 Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean School of Physics and Optoelectronic Engineering Nanjing University of Information Science & Technology Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology Nanjing University of Information Science & Technology

A tunable perfect absorber composed of hexagonal-arranged aluminum nano-disk array embedded in the vanadium dioxide(VO_2) film is proposed. The aim is to achieve the tunability of resonance absorption peak in the visible and near-infrared regimes. Numerical results reveal that the absorption peak achieves a large tunability of 76.6% while VO_2 undergoes a structural transition from insulator phase to metallic phase. By optimizing the structural parameters, an average absorption of 95% is achieved from 1242 to 1815 nm at the metallic phase state. In addition, the near unity absorption can be fulfilled in a wide range of incident angle(0°–60°) and under all polarization conditions. The method and results presented here would be beneficial for the design of active optoelectronic devices.

关键词： Vanadium Dioxide Hexagonal aluminum nanodisc array absorbent

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Talin and kindlin： the one-two punch in integrin activation

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Frontiers of Medicine 2014年第1期8卷 6-16页

作者： Feng Ye Adam K. Snider Mark H. Ginsberg Department of Medicine University of California San Diego La Jolla CA 92093 USA

Proper cell-cell and cell-matrix contacts mediated by integrin adhesion receptors are important for development, immune response, hemostasis and wound healing. Integrins pass trans-membrane signals bidirectionally through their regulated affinities for extracellular ligands and intracellular signaling molecules. Such bidirectional signaling by integrins is enabled by the conformational changes that are often linked among extracellular, transmembrane and cytoplasmic domains. Here, we review how talin-integrin and kindlin-integrin interactions, in cooperation with talin-lipid and kindlin-lipid interactions, regulate integrin affinities and how the progress in these areas helps us understand integrin-related diseases.

关键词： signal transduction transmembrane domain nanodisc integrin talin kindling cell adhesion

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