Huang, C.C.C.C.HuangChang, I.M.I.M.ChangHuang, J.H.J.H.HuangJEN-CHEN FANChen, Y.F.Y.F.ChenTseng, P.K.P.K.Tseng2018-09-102018-09-101998http://www.scopus.com/inward/record.url?eid=2-s2.0-0042858282&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/341506A study of porous silicon prepared under different HF concentrations by positron annihilationjournal article