NDLI: The optical characteristics of the sample based liquid crystal for using radiation detector

Content Provider	IEEE Xplore Digital Library
Author	Min-seok Yun Young-bin Kim Min-woo Kim Suk-hee Jung Gi-won Jang Sang-hee Nam
Copyright Year	2009
Description	Author affiliation: Korea Institute for accreditation Medical Image, Korea (Gi-won Jang) \|\| Department of Medical Image Science, Inje University Gimhae, Korea (Young-bin Kim; Suk-hee Jung) \|\| Department of Biomedical Engineering, Inje University Gimhae, Korea (Min-seok Yun; Min-woo Kim; Sang-hee Nam)
Abstract	The digital radiation detectors are used clinically by diagnostic apparatus. However the digital radiation detector has some problem like high operating voltage, light blurring, low conversion efficiency and low fill factor. Thus we propose a new radiation detector that the photoconductor layer and liquid crystal layer are coupled in sandwich structure. X-ray absorption in the photoconductor layer controls the state of the liquid crystal via creation of charge carrier and the light modulation of liquid make image formation. The advantages of the new radiation detector are that high resolution image is acquired and the signal amplification is possible by external visible light source. In this study, we study the optical properties and electrical properties of the new radiation detector to irradiate X-ray. The HgI was used by photoconductor material, and the aluminum is used by reflective layer. The thickness of HgI is about 200um and the operating voltage of the liquid crystal is from 1.5V to 5V. The electrical properties of HgI were measured, and the transmission efficiency of liquid crystal was measured by modulation potential.
Starting Page	2456
Ending Page	2459
File Size	208869
Page Count	4
File Format	PDF
ISBN	9781424439614
ISSN	10957863
DOI	10.1109/NSSMIC.2009.5402110
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Liquid crystals Radiation detectors Photoconductivity X-ray imaging Optical modulation Photoconducting materials Electric variables measurement Thickness measurement Low voltage Sandwich structures photoconductor radiation detector liquid crystal
Content Type	Text
Resource Type	Article

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