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相关概念视频

Photoelectric Effect02:26

Photoelectric Effect

When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...

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相关实验视频

Updated: Jun 28, 2026

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
11:26

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light

Published on: September 12, 2014

一个可调节的光传感器.

Yan-Li Zhao1, Liangbing Hu, George Grüner

  • 1Department of Chemistry and Biochemistry, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, California 90095, USA.

Journal of the American Chemical Society
|November 15, 2008
PubMed
概括
此摘要是机器生成的。

一个新的烯基环氧德克斯装饰的单壁碳纳米管场效应晶体管作为可调节的光传感器. 该设备展示了用于光检测应用的可逆光响应.

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Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light

Published on: September 12, 2014

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors
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Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors

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Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
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Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 传感器技术 传感器技术

背景情况:

  • 单壁碳纳米管 (SWNTs) 为设备应用提供独特的电子特性.
  • β-cyclodextrins是用于分子识别的多功能宿主分子.
  • 场效应晶体管 (FET) 是一种敏感的电子设备.

研究的目的:

  • 制造一个可调节的光传感器,使用装饰着pyrenecyclodextrin的SWNTs.
  • 为了研究光传感器对光和特定Ru复合物的反应.
  • 探索可调光检测的潜力.

主要方法:

  • 制造一个pyrenecyclodextrin-SWNT混合材料.
  • 一个SWNT场效应晶体管 (FET) 装置的构造.
  • 在不同的光照条件下以及在存在亚达曼改性Ru复合物 (ADA-Ru) 的情况下,对设备的光响应的描述.

主要成果:

  • 这种pyrenecyclodextrin-SWNT/FET装置表现出可调节的光响应.
  • 在照明 (280 nm) 时,负门电压转移和增加的板电阻表明电荷从pyrenecyclodextrins转移到SWNTs.
  • 在ADA-Ru和照明 (490nm) 的存在下,正面门电压转移和降低板电阻表明从混合动力到ADA-Ru的电荷转移.
  • 观察到的光响应在光线被移除后是可逆的.

结论:

  • 这种pyrenecyclodextrin-SWNT/FET装置作为可调节的光传感器.
  • 该装置在光刺激时显示出不同的电荷转移机制,这取决于分析物.
  • 这种可调节的光传感器对光检测中的应用非常有希望.