Passive ultrasonic temperature measurement through a metal wall. - Bibhu Kar; Thomas Schaechtle; Stefan J. Rupitsch; Ulrike Wallrabe (IEEE SENSORS, 2021)

Acoustically Coupled Passive Wireless Sensor System With Mechanical Resonant Sensor. - Thomas Schaechtle; Bibhu Kar; Georg Fischer 003; Andrea Gabbrielli; Fabian Höflinger; Ulrike Wallrabe; Stefan J. Rupitsch (WiSEE, 2022)