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genhunter

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超级老快: 金币+50, 翻译EPI+1, ★★★很有帮助 2016-12-05 09:51:07

金属纳米颗粒在一定频率的光场作用下,内部自由电子随光场振荡并激发出表面等离子体共振,这种共振效应使得金属颗粒周围的局域电磁场显著增强。这种近场增强特性被广泛应用于近场信号的放大,例如表面增强荧光、表面增强拉曼散射、表面增强吸收、透射等,表面等离子体共振技术由于其高灵敏度、高效、简便、快捷的优点,在表面增强光谱仪、光电子器件、化学传感器、生物检测等方面具有广泛的应用前景。

When metal nanoparticles are irradiated with light of certain wavelength, internal free electrons oscillate with the photic field and are excited to generate surface plasmon resonance, which significantly enhances the local electromagnetic field surrounding nanoparticles. The near-field enhancement properties have been widely used to amplify near-field signals, such as surfaces-enhanced fluorescence, surface-enhanced Raman scattering, Surface enhanced absorption, and transmission, etc. Due to its advantages such as high sensitivity, efficiency, simplicity and rapidity, surface plasmon resonance technology has a broad use in surface enhanced spectroscopy, optoelectronic devices, chemical sensors, biological testing, etc.

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