Search academic texts

Information × Registration Number 0223U000503, 0118U002317 , R & D reports Title Development of new dielectric UHF materials for resonators, which will increase the sensitivity of EPR devices, and the creation on their basis mini-EPR analyzer for rapid analysis in medicine and monitoring of the environment. Section 2. Development of a mini-EPR analyzer for express analysis in medicine and environmental monitoring on the basis of UHF resonators with optimized geometry popup.stage_title Head Yukhymchuk Volodymyr O., Доктор фізико-математичних наук Registration Date 09-01-2023 Organization VE Lashkarev Institute of Semiconductor Physics of the National Academy of Sciences of Ukraine popup.description2 The EPR technique for diagnosing various types of functional objects using the development of miniature dielectric resonators has been developed. In accordance with the last year calculations of the improved geometry of the dielectric resonator (DR), suitable for enhancing EPR signals of thin films and coatings, its elements were made in the form of rectangles with dimensions of 5.9x5.5x5.64 mm3 from BaTi4O9+8.5% ZnO (ε≈36) ceramics. Using EPR measurements, elements without EPR signals were experimentally selected. A DR holder is made, which allows rotation around a horizontal axis for precise positioning of the DR in a standard metal ТЕ102 cavity. A DR was formed from two elements with a gap between them of up to 0.5 mm on the manufactured holder. An experimental verification of the DR efficiency was carry out on a SiOx/Si sample with film and substrate thicknesses of 950nm and 300 m, respectively. An approximately 4-fold increase in the EPR signal of the thin film was registered. Product Description popup.authors Vorona Ihor P. Golovina Iryna S. Lemishko Sergiy V. popup.nrat_date 2023-01-09 Close