List Calcium-Modified Silk FIlm as a Patch-Type Ultrasound Coupling Medium Author S.-M. Lee†, T. Lee†, H. Kim, Y. Jo, S. Kim, and H. J. Lee* Conference 2022 MRS Spring Meeting & Exhibit, Honolulu, Hawaii Date May 8-13, 2022. Year 2022 Calcium-Modified Silk-based Ultrasound Coupling Medium for Ultrasound Applications