Wen, Y.-C.Y.-C.WenGuol, S.-H.S.-H.GuolChen, H.-P.H.-P.ChenSheu, J.-K.J.-K.SheuCHI-KUANG SUN2018-09-102018-09-102011http://www.scopus.com/inward/record.url?eid=2-s2.0-80051599177&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/364824Femtosecond ultrasonic spectroscopy using a piezoelectric nanolayer: Hypersound attenuation in vitreous silica filmsjournal article10.1063/1.3620879