相关实验视频

Updated: Jun 17, 2026

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Published on: January 3, 2016

调整多极微粒散射在介电覆盖镜上的多极微粒散射

Kan Yao^1,2, Jie Fang², Taizhi Jiang^2,3

¹Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States.

|June 14, 2024

概括

研究人员使用带介电覆盖的镜子增强了微球的光学性能. 这种方法控制了纳米光子学的光物质相互作用,并使敏感的分子检测成为可能.

科学领域:

纳米光子学纳米光子学
材料科学材料科学材料科学

背景情况:

光学共振粒子对于光学天线和超表面等纳米光子设备至关重要.
这些共振器的光学特性决定了设备的功能,使得扩展响应非常可取.
使用不对称介电环境的现有方法对粒子光学特性提供有限的控制.

研究的目的:

研究有效修改微球多极散射的方法.
探讨使用带电介质覆盖的镜子来调整Mie共振和基板模式之间的合.
为了证明对光-物质相互作用的增强控制,用于先进的纳米光子应用.

主要方法:

将微球放置在被介电覆盖的镜子基板上.
分析微球Mie共振与基板静止/波导模式之间的合.
单粒子中红外光谱学用于分子指纹检测的实验演示.
对粒子悬浮的光学排斥力进行计算模拟.

主要成果:

证明了有效修改微球多极散射的方法.
实现了选择性激发,增强,抑制和消除多极共振.
扩展了微球的散射波长.
通过单粒子光谱学成功检测出分子指纹.
模拟强大的光学排斥力,能够将颗粒从基板上升.

结论:

一个被介电覆盖的镜子提供了一个强大的平台来调整微球的光学特性.
这种可调性为控制轻物质相互作用提供了变革性的机会.
开发的技术使敏感分子检测和潜在的非接触粒子操纵成为可能.

关键词:

更多的共振.红外光谱学红外光谱学纳米光子学纳米光子学光学力量是指光学力量.光学散射器是一种光学散射器.波导是一种波导.

更多相关视频

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

Scattering And Absorption of Light in Planetary Regoliths

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

相关概念视频

Preparation of Samples for Electron Microscopy

Preparation of Samples for Electron Microscopy

To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...