Extremely high fluorescence enhancement in quenching-free nanostructures

无猝灭纳米结构中极高的荧光增强

• 批准号: 23310064
• 负责人: HAYASHI Shinji
• 金额: $ 11.81万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23310064/
• 关键词: ナノ構造; 微粒子; 蛍光増強; 有機分子; 近接場; 光散乱

We could achieve the quenching-free fluorescence based on nonmetallic particles. Calculations based on the Mie theory suggested high enhancement factors for GaP and Si particles. Experiments performed with GaP particles and dye molecules indeed demonstrated the fluorescence enhancement with an enhancement factor as high as 140. A high enhancement was observed even when the molecules are located within 10 nm away from the particle surfaces, demonstrating that the fluorescence is quenching free. We also theoretically examined the high electric field enhancement in planar dielectric multilayer systems. The dielectric waveguide is expected to be very much suited to the quenching free fluorescence enhancement.

我们可以实现基于非金属粒子的非淬灭荧光。基于Mie理论的计算表明，GaP和Si粒子具有较高的增强因子。用GaP颗粒和染料分子进行的实验确实证明了荧光增强，其增强因子高达140。即使当分子位于距离粒子表面10 nm以内时，也观察到高度增强，这表明荧光不会猝灭。我们还从理论上考察了平面介质多层体系的强电场增强。介质波导被认为非常适合于猝灭自由荧光增强。

项目成果

Enhanced spectroscopy based on near-field enhancement in nonmetallic nanostructures

基于非金属纳米结构近场增强的增强光谱

• 发表时间: 2012
• 作者: T. Miyazaki;R. Sumii;H. Umemoto;H. Okimoto;Y. Ito;T. Sugai;H. Shinohara,T. Zaima;H. Yagi;S.Hino;Shinji Hayashi
• 通讯作者: Shinji Hayashi

Handbook of Enhanced Spectroscopies

增强光谱手册

• 发表时间: 2014
• 作者: 大場貴史;越智杏奈;坂井浩平;松本謙一郎;柘植丈治;田口精一;Shinji Hayashi
• 通讯作者: Shinji Hayashi

Plasmonic Effects on the Optical Properties of Metal-Insulator-Metal Structures

等离激元效应对金属-绝缘体-金属结构光学性质的影响

• 发表时间: 2012
• 作者: 西村裕志;小澤佑;岡村英保;佐々木碧;片平正人;渡辺隆司;海山剛史,大橋竜太郎,井田朋智,水野元博;Shinji Hayashi
• 通讯作者: Shinji Hayashi

Immobilization of polyynes adsorbed on Ag nanoparticle aggregates into poly(vinyl alcohol) films

将吸附在银纳米粒子聚集体上的多炔固定到聚乙烯醇膜中

• DOI: 10.1016/j.carbon.2011.06.074
• 发表时间: 2011
• 期刊: Carbon
• 影响因子: 10.9
• 作者: Shu Okada;Minoru Fujii;and Shinji Hayashi
• 通讯作者: and Shinji Hayashi

Excitation of antisymmetric SPP modes in metal-insulator-metal structures by embedded dye molecules

通过嵌入染料分子激发金属-绝缘体-金属结构中的反对称 SPP 模式

• 发表时间: 2012
• 作者: T.Watanabe;and T. Mitani;酒井明;Shinji Hayashi
• 通讯作者: Shinji Hayashi