Sensing method based on the reflective property of a thin metallic mesh device in the terahertz region

Author

Tomita, Sakura ; Ogawa, Yuichi ; Suzuki, Tetsuhito ; Kondo, Naoshi ; Kondo, Takashi ; Kanba, Seiji

Author_Institution

Kyoto Univ., Kyoto, Japan

fYear

2011

fDate

16-19 Oct. 2011

Firstpage

292

Lastpage

295

Abstract

We demonstrate a new biosensing method using the reflective property of a metallic mesh device (MMD). The MMD can work as a band-pass filter in the terahertz (THz) region and its sensing mechanism is attributed to localization of the electromagnetic field on the surface of the device due to the periodic structure. The refractive index of a liquid sample can be estimated by calculating the shift in the reflectance spectrum before and after the sample is attached to the device. The results indicate that the reflection measurement method is effective for solution measurement and also MMDs could function as sensors for detecting the affinity of its near-surface property for water.

Keywords

biosensors; reflectivity; refractive index; terahertz waves; MMD; band-pass filter; biosensing method; electromagnetic field; near-surface property; periodic structure; reflectance spectrum; reflection measurement method; reflective property; refractive index; sensing mechanism; terahertz region; thin metallic mesh device; Biosensors; Electromagnetic fields; Optical surface waves; Reflection; Refractive index; Surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena (CEIDP), 2011 Annual Report Conference on

Conference_Location

Cancun

ISSN

0084-9162

Print_ISBN

978-1-4577-0985-2

Type

conf

DOI

10.1109/CEIDP.2011.6232654

Filename

6232654