Subwavelength plastic wire terahertz time-domain spectroscopy

被引：12

作者：

You, Borwen ^{[1
,2
]}

Lu, Ja-Yu ^{[1
,2
]}

Liu, Tze-An ^{[3
]}

Peng, Jin-Long ^{[3
]}

Pan, Ci-Ling ^{[4
,5
]}

机构：

[1] Natl Cheng Kung Univ, Inst Electroopt Sci & Engn, Tainan 70101, Taiwan

[2] Natl Cheng Kung Univ, Adv Optoelect Technol Ctr, Tainan 70101, Taiwan

[3] Ind Technol Res Inst, Ctr Measurement Stand, Hsinchu 30011, Taiwan

[4] Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan

[5] Natl Tsing Hua Univ, Inst Photon Technol, Hsinchu 30013, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 05期

关键词：

biosensors; lab-on-a-chip; molecular biophysics; polymers; powders; terahertz spectroscopy; terahertz wave devices; waveguides; wires; FIBER; COUPLER;

D O I：

10.1063/1.3279154

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This work demonstrates the feasibility of a terahertz time-domain spectrometer based on a subwavelength-diameter plastic wire (SPW) for sensing applications. The dispersion property of the SPW is experimentally and theoretically studied. The SPW exhibits a low and controllable waveguide dispersion, which can be engineered by changing the core diameter, the core index, and the cladding index of the wire. Two white powders, tryptophan and polyethylene, deposited on the bottom of the wire can be successfully distinguished based on the waveguide dispersion of SPW. The SPW would be a promising candidate for combination with biochips for sensing minute molecules.

引用

页数：3

共 16 条

[1] Identification of a resonant imaging process in apertureless near-field microscopy [J].