Search academic texts

Information × Registration Number 0221U106590, 0120U104106 , R & D reports Title Flexible Printable Humidity Sensing Elements on Lyotropic Chromonic Liquid Crystals. popup.stage_title Head Nazarenko Vassili G., Доктор фізико-математичних наук Registration Date 14-12-2021 Organization Institute of Physics of National Academy of Sciences of Ukraine popup.description2 Preserving structural integrity of organic materials in manufacturing and exploitation of electronic devices on flexible large-area substrates was the primary target of the current proposal. We proposed lyotropic chromonic liquid crystals (LCLCs) as ideally suited for printing over flexible substrates, because their aligned structure is shaped by weak noncovalent forces. In result of the project it was determined how to control the aggregation and self-organization of lyotropic chromonic liquid crystal (LHRC) molecules in solutions, single-layer and multilayer films as well as to adapt macroscopic semiconductor properties for use in humidity sensors. Flexible humidity sensors with a response time of electric current to high humidity less than 100 ms have been developed; recovery time is about 10 s, current fluctuations exceed three orders of magnitude within 40% -90% humidity change. A feature of the proposed approach is that the sensitive element can be printed on a flexible substrate. Such sensor devices have numerous technological advantages, such as ease of production / integration, as well as a corresponding reduction in costs. Product Description popup.authors Buluy Oleksandr Grygorovych Vakhnin Olexandr Yurievych Kadashchuk Andrey Konstantynovych Kurioz Yuriy Ivanovych Marchenko Oleksandr Anatolievych Nazarenko Vassili Gennadievych Perhamenschyk Victor Mykhailovych Sеnenko Anton Ihorovych Tereshchenko Oleksandr Grygorovych Cherepanov Vsevolod V popup.nrat_date 2021-12-14 Close