lASER FORCE SPECTROSCOPY OF SINGLE NANO-ASSEMBLIES

单个纳米组件的激光光谱

基本信息

  • 批准号:
    13450024
  • 负责人:
  • 金额:
    $ 9.54万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
  • 财政年份:
    2001
  • 资助国家:
    日本
  • 起止时间:
    2001 至 2002
  • 项目状态:
    已结题

项目摘要

A novel method of dynamic absorption spectroscopy with using laser radiation pressure has been developed for analyzing photophysical phenomena of single nano-assemblies with high sensitivity and high precision. This method is based on a fact that the radiation pressure induced by irradiation of laser light depends on the refractive index and the absorption coefficient (complex refractive index) of the assembly. That is an original idea that absorption is measured through conversion into an optical force, instead of the change in the transmission light intensity. Thus, there is no influence of scattering and stray lights, and high sensitivity can be obtained for linear absorption measurement, those are advantages to the conventional spectroscopy techniques. In the method, our original technique that makes it possible to directly measure an extremely weak force exerted on a Brownian nano-assembly by statistical mechanics is used. This technique can realize femto-Newton order force observation so that assemblies with absorption cross sections of square Angstrom could be analyzed. We have developed a laser force spectroscopy system with a laser-diode-pumped Nd : YAG laser and originally designed microscope optics. Theoretical analyses and experimental date obtained for dye-doped polymer latexes demonstrated the effectiveness of the method, and we discussed on the expectation of sensitivity and precision in the present technique.
提出了一种基于激光辐射压力的动态吸收光谱分析方法,用于分析单纳米组件的光物理现象,具有高灵敏度和高精度。这种方法是基于这样一个事实,即激光照射引起的辐射压力取决于组件的折射率和吸收系数(复折射率)。这是一个最初的想法,吸收是通过转换成光力来测量的,而不是通过透射光强的变化来测量的。线性吸收测量不受散射和杂散光的影响,灵敏度高,是传统光谱技术所无法比拟的优点。在该方法中,使用了我们的原始技术,该技术可以通过统计力学直接测量施加在布朗纳米组件上的极弱力。该技术可以实现飞牛顿级力的观测,从而对吸收截面为方埃的组件进行分析。我们用激光二极管泵浦Nd: YAG激光器和原始设计的显微镜光学系统开发了激光力谱系统。对染料掺杂聚合物乳液的理论分析和实验数据证明了该方法的有效性,并对该方法的灵敏度和精密度进行了讨论。

项目成果

期刊论文数量(40)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
H.Fujiwara: "Observation of the discrete transition of optically trapped particle position in the vicinity of an interface"Appl.Phys.Lett.. 84, 1. 13-15 (2004)
H.Fujiwara:“界面附近光学捕获粒子位置离散转变的观察”Appl.Phys.Lett.. 84, 1. 13-15 (2004)
  • DOI:
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  • 影响因子:
    0
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  • 通讯作者:
K.Sasaki: "Single Organic Nanoparticles, Chap. 9 : Force measurement for a single nanoparticle, (Eds.; H.Masuhara, H.Nakanishi, K.Sasaki"Springer. 109-120 (2003)
K.Sasaki:“单一有机纳米粒子,第 9 章:单个纳米粒子的力测量,(编辑;H.Masuhara、H.Nakanishi、K.Sasaki”Springer. 109-120 (2003)
  • DOI:
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    0
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  • 通讯作者:
Y.Matsuo: "Time-resolved Laser Scattering Spectroscopy of a Single Metallic Nanoparticle"Jpn.J.Appl.Phys.. 40. 6143-6147 (2001)
Y.Matsuo:“单一金属纳米颗粒的时间分辨激光散射光谱”Jpn.J.Appl.Phys.. 40. 6143-6147 (2001)
  • DOI:
  • 发表时间:
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  • 影响因子:
    0
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K.Wada: "Electric charge measurement on a single microparticle using thermodynamic analysis of electrostatic forces"Appl. Phys. Lett.. 81, 10. 1768-1770 (2002)
K.Wada:“利用静电力热力学分析对单个微粒进行电荷测量”Appl。
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    0
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K.Tsujino: "A detailed analysis of the fidelity of quantum teleportation using photons : Considering real experimental parameters"Physical Review A. 66. 042314-1-042314-6 (2002)
K.Tsujino:“使用光子的量子隐形传态保真度的详细分析:考虑真实的实验参数”物理评论 A. 66. 042314-1-042314-6 (2002)
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    0
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SASAKI Keiji其他文献

SASAKI Keiji的其他文献

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{{ truncateString('SASAKI Keiji', 18)}}的其他基金

Optically-driven dynamic-mode AFM using Fano resonances
使用 Fano 共振的光驱动动态模式 AFM
  • 批准号:
    26600037
  • 财政年份:
    2014
  • 资助金额:
    $ 9.54万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Radiation Pressure Cooling With Localized Surface Plasmon
使用局域表面等离子体激元的辐射压力冷却
  • 批准号:
    23656039
  • 财政年份:
    2011
  • 资助金额:
    $ 9.54万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Highly-efficient two-photon reaction processes using entanglement of localized plasmons
利用局域等离子体激元纠缠的高效双光子反应过程
  • 批准号:
    23246016
  • 财政年份:
    2011
  • 资助金额:
    $ 9.54万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Development of non-destructive photon detection method using radiation pressure
开发利用辐射压力的无损光子探测方法
  • 批准号:
    18206008
  • 财政年份:
    2006
  • 资助金额:
    $ 9.54万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Analysis of molecular elastic response using radiation pressure induced capillary wave
利用辐射压力诱导毛细波分析分子弹性响应
  • 批准号:
    15206007
  • 财政年份:
    2003
  • 资助金额:
    $ 9.54万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Microspherical upconversion laser for near field microscopy
用于近场显微镜的微球形上转换激光器
  • 批准号:
    11555009
  • 财政年份:
    1999
  • 资助金额:
    $ 9.54万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Development of Optical Resonance Dynamic Spectroscopy for Single Microparticles
单微粒光学共振动态光谱学的发展
  • 批准号:
    10305007
  • 财政年份:
    1998
  • 资助金额:
    $ 9.54万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A).

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    2443052
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    2020
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Development of ultrasonic probe evaluation system using change in liquid surface shape due to acoustic radiation pressure
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