{"title":"A Passive Method for Monitoring Non-Ionizing Radiation","authors":"G. Fanslow, D. Stephenson","doi":"10.1109/MWSYM.1977.1124397","DOIUrl":null,"url":null,"abstract":"The temperature-dependent light scattering properties of cholesteric liquid crystals are used as both the sensing and indicating mechanism in a calorimetric radiation monitor. The liquid crystals are arranged on two dielectric disks; one is a plain dielectric and the other is metal coated. While both disks will respond to general changes in ambient conditions, the metallized disk will also have a temperature change due to absorbed radiation. Thus, the difference between the temperatures of the two disks, as indicated by the liquid crystals, is a measure of radiation. Experimental models are described and the results of tests at 2.45 GHz for power densities of from 1 to 15 mW/cm/sup 2/ are presented.","PeriodicalId":299607,"journal":{"name":"1977 IEEE MTT-S International Microwave Symposium Digest","volume":"24 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1977-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"1977 IEEE MTT-S International Microwave Symposium Digest","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MWSYM.1977.1124397","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The temperature-dependent light scattering properties of cholesteric liquid crystals are used as both the sensing and indicating mechanism in a calorimetric radiation monitor. The liquid crystals are arranged on two dielectric disks; one is a plain dielectric and the other is metal coated. While both disks will respond to general changes in ambient conditions, the metallized disk will also have a temperature change due to absorbed radiation. Thus, the difference between the temperatures of the two disks, as indicated by the liquid crystals, is a measure of radiation. Experimental models are described and the results of tests at 2.45 GHz for power densities of from 1 to 15 mW/cm/sup 2/ are presented.
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