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Modified solution-processible fabrication of metallic photonic crystals with template removal

Chinese Optics Letters 2009年第10期7卷 912-914页

作者：刘红梅张新平李景娟宋骄阳 College of Applied Sciences Beijing University of Technology

High-temperature annealing and pre-annealing lift-off procedures are employed to improve the solutionproeessible technique for the fabrication of one- （1D） and two-dimensional （2D） metallic photonic crystals （MPCs） based on colloidal gold nanoparticles. This enables the successful fabrication of gold nanowires or nanocylinder array structures with the photoresist template removed completely, which is crucial for the application of MPCs in biosensors and optoelectronic devices. Microscopic measurements show homogeneous 1D and 2D photonic structures with an area as large as 100 mm2. Plasmonic resonance of the gold nanostructures and its coupling with the resonance mode of the planar waveguide underneath the photonic structures are observed, implying the excellent optical properties of this kind of MPCs based on the improved fabrication technique.

关键词： Biosensors electric wire Fabrication Gold Optical properties Optoelectronic devices Resonance Two dimensional

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Synaptic plasticity effects on FeCl_2-induced post-traumatic epilepsy onset in the rat

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Neural Regeneration Research 2010年第18期5卷 1373-1377页

作者： Yuanxiang Lin Feng Wang Ruxiang Xu Xiaodan Jiang Dezhi Kang Yiquan Ke Mouxuan Du Lishuang Xu Department of Neurosurgery First Affiliated Hospital Fujian Medical University Fuzhou 350005 Fujian Province China Department of Neurosurgery Zhujiang Hospital Southern Medical University Guangzhou 510282 Guangdong Province China

Studies have confirmed that iron induces epilepsy onset, and iron ion-induced epilepsy in anima models closely resembles the clinical situation. Models of post-traumatic epilepsy （PTE） were established by intracortical injection of FeCl2 using stereotactic techniques. Electron microscopy revealed neuronal degeneration, with shrinkage of the neuronal soma, hyperplasia of rough endoplasmic reticulum, ribosomal detachment from the endoplasmic reticulum, and vacuolar degeneration of glial cells in the right frontal lobe of FeCl2-induced PTE rats. With prolonged time injuries became more severe and neuronal apoptosis was observed. Synapses in the hippocampal neuropil significantly increased （primarily type I/excitatory synapses） at day 14 following injury. Type II synapses （inhibitory synapse） were observed in the rat hippocampus at day 30. Cortical neuronal degeneration, apoptosis, glial cell proliferation, and ultrastructural hippocampal changes, in particular changes in type of neuronal synapse, play an important role in PTE onset.

关键词： post-traumatic epilepsy animal model ferrous chloride synapse synaptic plasticity electron microscope electric wire neurodegenerative diseases neural regeneration

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