Lin, H.-I.H.-I.LinYadav, K.K.YadavChang, T.-J.T.-J.ChangKataria, M.M.KatariaShalaginov, M.Y.M.Y.ShalaginovShen, K.-C.K.-C.ShenWang, C.-C.C.-C.WangYIT-TSONG CHENYANG-FANG CHEN2021-07-282021-07-282020https://www.scopus.com/inward/record.url?eid=2-s2.0-85095415821&partnerID=40&md5=ababf3a03c98f62e93ac82491e30299fhttps://scholars.lib.ntu.edu.tw/handle/123456789/574976Tailoring of Effective Refractive Indices: A New Paradigm towards Ultralow Excitation Power of Upconversion Nanoparticlesconference paper10.1364/CLEO_SI.2020.STh4F.72-s2.0-85095415821