引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 618次   下载 490 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Fabricating Nanogaps between Nanoelectrodes using Dielectrophoresis Technique for Molecular Fluorescence Enhancement
Qiu-shi Meng,Hong-bing Cai,Ke Lin,San-e Zhu,Yuan Liao,Yang Zhang,Xiao-ping Wang,Zhen-chao Dong
Author NameAffiliationE-mail
Qiu-shi Meng   
Hong-bing Cai 
Hefei National Laboratory for Physical Sciences at the Microscale
, and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
 
 
Ke Lin 
Hefei National Laboratory for Physical Sciences at the Microscale
, and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
 
 
San-e Zhu 
Hefei National Laboratory for Physical Sciences at the Microscale
, and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
 
 
Yuan Liao 
Hefei National Laboratory for Physical Sciences at the Microscale
, and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
 
 
Yang Zhang 
Hefei National Laboratory for Physical Sciences at the Microscale
, and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
 
zhyangnano@ustc.edu.cn 
Xiao-ping Wang 
Hefei National Laboratory for Physical Sciences at the Microscale
, and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
 
 
Zhen-chao Dong 
Hefei National Laboratory for Physical Sciences at the Microscale
, and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
 
Dongzcdong@ustc.edu.cn 
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 uorescent molecules-covered electrodes in a controllable way using dielectrophoretic trapping, forming nanogaps sandwiched between nanoparticle and nanoelectrodes. Preliminary photoluminescence measurements show that enhanced molecular uorescence could be detected from the uorescent molecules inside the nanogaps. These results pave the way for realizing electrically driven molecular uorescence based on nanogap electrodes.
Key words:  Nanogap  Nanoelectrode  Dielectrophoresis  Coreshell nanoparticle  Fluorescence enhancement
FundProject:This work is supported by the National Basic Research Program of China, the National Natural Science Foundation of China, and Chinese Academy of Sciences.
介电泳技术制备具有分子荧光增强效应的电极间纳米间隙结构
孟秋实,蔡洪冰,林珂,朱三娥,廖源,张杨,王晓平,董振超
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.
关键词:  纳米间隙  纳米电极  介电泳  核壳结构纳米颗粒  荧光增强
DOI:10.1063/1674-0068/29/cjcp1510223
分类号: