TY - RPRT TI - Multi-Level Information Storage Using Engineered Electromechanical Resonances of Piezoelectric Wafers: A Concept Piezoelectric Quick Response (PQR) Code AU - Hakoda, Christopher AU - Davis, Eric S. AU - Pantea, Cristian AU - Chillara, Vamshi Krishna (ORCID:0000000309600187) PY - 2020 DO - 10.3390/s20216344 UR - https://www.osti.gov/biblio/2396008 ID - 2396008 ER -