概括
研究人员开发了获殊荣的量子点. 这些半导体纳米粒子以鲜的颜色发光,具体颜色取决于它们的尺寸.
科学领域:
- 材料科学
- 纳米技术
- 量子物理
背景情况:
- 量子点是半导体纳米粒子,其光学和电子特性与较大的粒子不同.
- 量子点的可调节光学特性使得它们具有各种应用的吸引力.
相关概念视频
01:14Photoluminescence: Applications
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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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01:35Light as Energy
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The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
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