<i>In Situ</i> Microwave Sensors and Switching Circuit for Oil Slick Thickness Measurement

The measurement of oil slick thickness, although at an early stage, has immense applications in determining the extent and quantity crude accidentally discharged oceans. In this work, we present design, development sensors switching circuit that were integrated to form a novel microwave spill sensor for determination thickness. We used four ultra-wideband polydimethylsiloxane encapsulated antenna-sensors cuboid configuration connected customised RF comprising two single pole double throw (SPDT) switches. Each SPDT switches antennas port vector network analyser (VNA). developed android application on smartphone select each thickness measurements. operated radiating near-field regions. Crude lower density compared salted seawater, therefore, it floats surface. This enabled four-sensor antenna array establish using radio frequency. simulated measured transmission coefficients showed capability determine contact-based situ approach.