Modulated Terahertz Transmission through Sub-Wavelength Cu Grating by Liquid Water

作     者：陈华 吴秀梅 杨文星 CHEN Hua;WU Xiu-Mei;YANG Wen-Xing

作者机构：Department of Physics Southeast University Nanjing 210096 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2010年第27卷第1期

页      面：64-66页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 070208[理学-无线电物理] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 0835[工学-软件工程] 081002[工学-信号与信息处理] 0702[理学-物理学] 

主　　题：Chinese climate network complex systems small world community 

摘      要：Submerging the sub-wavelength Cu wire grating in liquid water, we prove that the transmission ration can be changed pronouncedly from 0.1THz to 1.7THz. The modulation of terahertz responses by liquid water is explained by the increasing effective electron mass in the plasmon picture. Due to this response, we extract the index of liquid water, and our results provide a potential application of using metal grating to detect real solvated condition biomaterials in the THz frequency range.