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相关概念视频

The Antenna Complex01:15

The Antenna Complex

Plants and other photosynthetic organisms comprise pigments capable of absorption of direct sunlight. These pigments are present in the reaction center - the main site of photochemical reactions as well as in the antenna complex. Under average light conditions, the rate at which reaction center pigments absorb light is far below the electron transport chain's capacity. As a result, the reaction center alone cannot provide enough energy to drive photosynthesis. The photosynthetic efficiency can...
Flame Photometry: Overview01:02

Flame Photometry: Overview

Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...

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相关实验视频

Updated: Jun 2, 2026

Optical Trapping of Nanoparticles
13:39

Optical Trapping of Nanoparticles

Published on: January 15, 2013

使用活跃光学天线进行光学检测.

Mark W Knight1, Heidar Sobhani, Peter Nordlander

  • 1Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA.

Science (New York, N.Y.)
|May 10, 2011
PubMed
概括

金属纳米天线现在可以收获光线并检测到它. 这种新的双重功能结构从等离子体衰变中产生光电流,产生紧的,灵敏的光探测器,具有扩展的光谱响应.

科学领域:

  • 光电学是指光电子产品.
  • 塑制剂的使用方法
  • 纳米技术 纳米技术

背景情况:

  • 纳米天线对于收集光线至关重要,而光二极管则使光检测成为可能.
  • 这两个功能传统上是分开的和独立的.
  • 将这些功能整合到一个单一的设备中是一个重大挑战.

研究的目的:

  • 为了展示一个单一的纳米结构,它结合了光收获和光检测.
  • 为了研究这种装置中光电流的产生机制.
  • 为了描述这款新型双功能光探测器的性能.

主要方法:

  • 与半导体集成的金属纳米天线的制造.
  • 将光子合到纳米天线中以激发表面等离子体.
  • 测量因热电子注入潜在屏障而产生的光电流.

主要成果:

  • 在一个纳米天线结构中成功集成光采集和光检测.
  • 从共振等离子体衰变和热电子注入中产生的光电流生成的观察.
  • 一个紧的,波长共振的,极化特定的光探测器的演示.

结论:

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Three-dimensional Optical-resolution Photoacoustic Microscopy
08:31

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

相关实验视频

Last Updated: Jun 2, 2026

Optical Trapping of Nanoparticles
13:39

Optical Trapping of Nanoparticles

Published on: January 15, 2013

Three-dimensional Optical-resolution Photoacoustic Microscopy
08:31

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

  • 开发的双功能纳米天线结构有效地结合了光采集和光检测.
  • 这项技术为制造非常紧和敏感的光学探测器提供了新的途径.
  • 该设备表现出独特的光谱响应特征,延伸到半导体带边缘以下.