標題: Optical sensing of square lattice photonic crystal point-shifted nanocavity for protein adsorption detection
作者: Lu, Tsan-Wen
Lin, Pin-Tso
Sio, Kuan-Un
Lee, Po-Tsung
光電工程學系
Department of Photonics
關鍵字: biochemistry;gallium arsenide;III-V semiconductors;indium compounds;optical sensors;photonic crystals;proteins;surface treatment;whispering gallery modes
公開日期: 24-五月-2010
摘要: We propose a point-shifted D(0) nanocavity formed by locally modulating four central air holes in square lattice photonic crystal for optical sensing application. Three defect modes in this nanocavity, including monopole, whispering-gallery, and dipole modes, are identified in experiments. We also apply a chemical treatment on InGaAsP surface to form a 1-octadecanethiol linking monolayer, which enables the following protein adsorption. In experiments, the wavelength shifts of lasing modes in the D(0) nanocavity due to the protein adsorption are observed and agree with the simulation results. This can be a practical tool for label-free molecule detection in biomedical researches. (C) 2010 American Institute of Physics. [doi:10.1063/1.3436550]
URI: http://dx.doi.org/10.1063/1.3436550
http://hdl.handle.net/11536/5388
ISSN: 0003-6951
DOI: 10.1063/1.3436550
期刊: APPLIED PHYSICS LETTERS
Volume: 96
Issue: 21
結束頁: 
顯示於類別:期刊論文


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  1. 000278183200094.pdf