DocumentCode :
2973471
Title :
Pulsed THz sensing of dielectric thin films using cascaded filter arrays
Author :
Wood, C. ; Cunningham, J. ; Davies, A.G. ; Hunter, I.C. ; Tosch, P. ; Evans, D.A. ; Linfield, E.H. ; Missous, M.
Author_Institution :
Sch. of Electron. & Electr. Eng., Leeds UNiv., UK
Volume :
2
fYear :
2005
fDate :
19-23 Sept. 2005
Firstpage :
586
Abstract :
The on-chip detection of nanolitre volumes of dielectric material is demonstrated using terahertz (THz) pulses. Simultaneous analysis at different frequencies on separate, lithographically defined locations is shown to be possible using THz band-stop filter elements connected by a microstrip line. Integrated thin film low-temperature-grown GaAs photoconductive switches are used for THz pulse generation within the microstrip interconnect. This technique is expected to be useful in sensing organic films such as DNA, and other biomolecular materials, in an on-chip environment.
Keywords :
band-stop filters; biosensors; dielectric thin films; gallium arsenide; infrared detectors; macromolecules; microstrip lines; millimetre wave detectors; optical switches; submillimetre wave imaging; DNA; GaAs; GaAs photoconductive switches; THz band-stop filter element; biomolecular materials; cascaded filter array; dielectric thin film; microstrip interconnect; microstrip line; nanolitre volume; on-chip detection; organic film sensing; pulse generation; pulsed THz sensing; terahertz pulse; DNA; Dielectric materials; Dielectric thin films; Frequency; Gallium arsenide; Microstrip filters; Photoconductivity; Pulse generation; Submillimeter wave filters; Switches;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005. The Joint 30th International Conference on
Print_ISBN :
0-7803-9348-1
Type :
conf
DOI :
10.1109/ICIMW.2005.1572677
Filename :
1572677
Link To Document :
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