TY - RPRT TI - Multi-frequency tapping-mode atomic force microscopy beyond three eigenmodes in ambient air AU - Solares, Santiago D. AU - An, Sangmin AU - Long, Christian J. PY - 2014 DO - 10.3762/bjnano.5.175 UR - https://www.osti.gov/biblio/1628611 ID - 1628611 ER -