Photonic crystal sensors based on porous silicon.
Photonic crystal sensors based on porous silicon.
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DOI：
10.3390/s130404694
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发表时间：
2013-04-09
期刊：
影响因子：
--
通讯作者：
Pacholski C
中科院分区：
文献类型：
--
作者：
Pacholski C
多孔硅已成为危险化学品和生物分子相互作用（例如 DNA 杂交、抗原/抗体结合和酶反应）光学检测的出色传感平台。其多孔性质在小体积内提供了高表面积，可以通过改变孔径来轻松控制。由于蚀刻的多孔硅层的孔隙率以及因此的折射率取决于电化学蚀刻条件，因此可以容易地获得由具有良好分辨率和窄光学反射率特征的多层多孔硅膜组成的光子晶体。与利用基于法布里-珀罗的光学转换的传感器相比，光子晶体的显着光学响应降低了检测极限，因此提高了多孔硅传感器的灵敏度。多孔硅光子晶体传感器的开发允许使用简单的颜色变化通过肉眼检测分析物，或制造具有两种不同光学特征的堆叠多孔硅光子晶体，可用于区分分析物，强调了其高应用潜力。
Porous silicon has been established as an excellent sensing platform for the optical detection of hazardous chemicals and biomolecular interactions such as DNA hybridization, antigen/antibody binding, and enzymatic reactions. Its porous nature provides a high surface area within a small volume, which can be easily controlled by changing the pore sizes. As the porosity and consequently the refractive index of an etched porous silicon layer depends on the electrochemial etching conditions photonic crystals composed of multilayered porous silicon films with well-resolved and narrow optical reflectivity features can easily be obtained. The prominent optical response of the photonic crystal decreases the detection limit and therefore increases the sensitivity of porous silicon sensors in comparison to sensors utilizing Fabry-Pérot based optical transduction. Development of porous silicon photonic crystal sensors which allow for the detection of analytes by the naked eye using a simple color change or the fabrication of stacked porous silicon photonic crystals showing two distinct optical features which can be utilized for the discrimination of analytes emphasize its high application potential.
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影响因子：
7.4
作者：
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通讯作者：
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DOI：
10.1002/pssa.200674379
发表时间：
2007-05-01
影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
Sailor, MJ
DOI：
10.1016/s0921-5107(03)00114-4
发表时间：
2003-07-25
期刊：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
影响因子：
--
作者：
De Stefano, L;Rendina, I;Rossi, AM
通讯作者：
Rossi, AM