TY - JOUR T1 - Non-contact measurement of the thickness of a surface film using a superimposed ultrasonic standing wave JO - Ultrasonics PY - 2021/02/01 AU - Kanja J AU - Mills R AU - Li X AU - Brunskill H AU - Hunter AK AU - Dwyer-Joyce RS ED - DO - DOI: 10.1016/j.ultras.2020.106291 PB - Elsevier BV VL - 110 SP - 106291 EP - 106291 Y2 - 2025/04/09 ER -