教授 博士生导师 硕士生导师
主要任职: 医学部党委书记兼常务副部长
性别: 男
毕业院校: 复旦大学
学位: 博士
所在单位: 生物医学工程学院
学科: 生物医学工程
电子邮箱: krqin@dlut.edu.cn
开通时间: ..
最后更新时间: ..
点击次数:
论文类型: 会议论文
发表时间: 2012-11-05
收录刊物: EI、CPCI-S、Scopus
卷号: 8561
关键字: Photonic Crystal; Cavity; Microfluidic channel; biosensor
摘要: In this work, we present the optical characterization of a two-dimensional (2D) L3 photonic crystal (PhC) cavity biosensor in visible region by using 3D Finite Difference Time Domain (FDTD) method. The sensor is based on GaN material and integrated with a microfluidic channel. Sensing is performed by measuring the wavelength shift of the PhC cavity resonant peak, whose spectral position is sensitive to refractive index changes of dielectric material inside microfluidic channel. We simulate the PhC cavity with water (n=1.33) and two immersion oils (n=1.48 and n=1.518) overlaid. Spectral peak width was found to be 9.8nm around 650nm. A spectral shift of peak wavelength with index change of 35nm/RIU was observed. Measured peak shift (Delta lambda = 6.5nm) corresponds to a detectable index change Delta n = 0.188.