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Alumina Photonic Crystals with Defect Modes for Sensor Application
Peng Yan1,2,3, Guang-Tao Fei*4, Hui Li1,5, Guo-liang Shang4, Bing Wu4, Li-de Zhang4
1.Department of Physics, University of Science and Technology of China, Hefei 230026, China;2.Binzhou Medical University, Yantai 264300, China;3.Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanostructures, Institute of Sol;4.Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanostructures, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China;5.Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanostructures, Institute of Solid State Physics, Hefei Institutes of Physical Sci
Abstract:
One-dimensional alumina photonic crystals with defect modes were successfully fabricated through inserting a constant voltage waveform into the periodic voltage signals. The trans-mission spectra show that the thickness of defects plays a key role in determining the trans-mittance of defect modes. When the thickness was ?180 nm, an obvious defect mode with the high transmittance of 55% and a narrow full width at half maximum of 18 nm was observed in the original photonic band gaps. The defect mode shifted linearly with the increasing of refractive index of the analytes infiltrated into pores, indicating its potential application in chemical sensing or bio-sensing.
Key words:  Nanomaterial, Porous material, Alumina, Photonic crystal, Sensor
FundProject:
具有缺陷模的氧化铝光子晶体的光学传感性能
闫鹏,费广涛*,李惠,商国亮,吴兵,张立德
1.中国科学技术大学物理系, 合肥230026;2.滨州医学院, 烟台264300;3.中国科学院合肥物质科学研究院固体物理研究所,中国科学院材料物理重点实验室,安徽省纳米材料与纳米技术重点实验室,合肥230031
摘要:
采用在周期性氧化电压信号中插入恒压波形的方法成功制备了具有缺陷模的一维氧化铝光子晶体. 这种晶体的透射光谱研究表明,缺陷的厚度对缺陷模的透过率具有显著影响,当缺陷厚度在180 nm时,光子禁带内部出现透过率为55%、半峰宽约为18 nm的缺陷模. 该缺陷模能够对进入到氧化铝孔道内部的液体物质做出响应,其位置与液体的折射率线性相关.
关键词:  纳米材料,多孔材料,氧化铝,光子晶体,传感器
DOI:10.1063/1674-0068/27/01/121-124
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