【摘要】 将单个核壳结构纳米颗粒放置在金属纳米电极之间制备了纳米尺度间隙结构.利用介电泳技术,本文可控地将蛋白质层包裹的SiO₂@Au核壳结构纳米颗粒定位放置在被荧光分子覆盖的纳米电极之间,从而得到了夹在纳米颗粒和金属纳米电极之间的纳米间隙结构.初步的光致发光测量表明,制备的纳米间隙结构可以有效地增强间隙中分子的荧光信号.这一结果为后续实现基于纳米间隙电极的电致分子荧光奠定了基础.更多还原

【Abstract】 Here we demonstrate the fabrication of nanometer-sized gaps by assembling single coreshell nanoparticles between metallic nanoelectrodes.Protein coated SiO₂@Au coreshell nanoparticles are synthesized and positioned between fluorescent molecules-covered electrodes in a controllable way using dielectrophoretic trapping,forming nanogaps sandwiched between nanoparticle and nanoelectrodes.Preliminary photoluminescence measurements show that enhanced molecular fluorescence could be detected from the fluorescent molecules inside the nanogaps.These results pave the way for realizing electrically driven molecular fluorescence based on nanogap electrodes.更多还原