Resonance wavelength-dependent signal of absorptive particles in surface plasmon resonance-based detection.
Resonance wavelength-dependent signal of absorptive particles in surface plasmon resonance-based detection.
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基于表面等离子体共振的检测中吸收粒子的共振波长相关信号。
DOI：
10.1016/j.snb.2006.09.059
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Yager,Paul
中科院分区：
文献类型：
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作者：
Fu,Elain;Ramsey,StephenA;Chen,Jingyi;Chinowsky,TimothyM;Wiley,Benjamin;Xia,Younan;Yager,Paul
我们使用建模和实验结果描述了基于表面等离子共振（SPR）的检测中吸收粒子的共振波长相关信号。这些颗粒（金纳米笼）在近红外 (NIR) 区域具有显着的吸收截面，从而通过 SPR 测量得出与波长相关的折射率。纳米笼产生的 SPR 信号在 650 nm 至 950 nm 的共振波长范围内变化四倍。最大的 SPR 信号出现在最长的共振波长处；其大小是由于SPR对金的敏感性随着波长的增加和纳米笼的光学吸收特性而固有增加。
We describe the resonance wavelength-dependent signal of absorptive particles in surface plasmon resonance (SPR)-based detection using both modeling and experimental results. The particles, gold nanocages, have a significant absorption cross-section in the near-infrared (NIR), resulting in a wavelength-dependent refractive index as measured by SPR. The SPR signal due to the nanocages varies by four-fold over resonance wavelengths from 650nm to 950nm. The greatest SPR signal occurs at the longest resonance wavelengths; its magnitude is due to the inherent increase in sensitivity of SPR on gold with increasing wavelength and the optical absorption properties of the nanocages.