Detection of ultra-low refractive index variations with colloidal nanoprobes

Detection of ultra-low refractive index variations with colloidal nanoprobes
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使用胶体纳米探针检测超低折射率变化

DOI:
10.1016/j.snb.2012.04.053
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发表时间:
2012
期刊:
Chemical
影响因子:
--
通讯作者:
Andreakou P
Andreakou P
中科院分区:
--
文献类型:
--
作者:
Andreakou P

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我们实现了一种简单快速的技术来检测由于周围介质折射率变化而引起的金纳米粒子光散射光谱位移。光谱位移检测使用光谱平衡光子计数从胶体金纳米粒子的散射光谱。我们演示了使用这种技术来检测低至0.1M的乙醇浓度。
We implement a simple and fast technique to detect spectral shifts in the light scattering of gold nanoparticles due to refractive index changes of the surrounding medium. Spectral shifts are detected using spectrally balanced photon counting from the scattering spectrum of colloidal gold nanoparticles. We demonstrate the use of this technique for sensing ethanol concentration down to 0.1M.
DOI: 10.1021/jp8111155
发表时间: 2009-02-12
期刊: The journal of physical chemistry. C, Nanomaterials and interfaces
影响因子: --
作者:
Lee J;Hasan W;Odom TW
通讯作者: Odom TW