Radiowave technology of resonant gas-sensor microwave telemetry by M. S. Kostin, A. D. Yarlykov

“…It is noted that the use of chemically active sputtering, for example, on the basis of zeolites having a high selective gas adsorbent kinetics in terms of speed, makes it possible to create radiosensor materials capable of changing the dielectric constant in the process of absorbing gases, as well as of sublimated vapors of solid and liquid phases of various compounds. …”
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