Chang, C.-K.C.-K.ChangYeh, C.-S.C.-S.YehLee, C.-K.C.-K.LeeLai, M.-W.M.-W.LaiYeh, J.-T.J.-T.YehLiu, J.-M.J.-M.LiuCHIH-KUNG LEE2020-04-282020-04-282009https://scholars.lib.ntu.edu.tw/handle/123456789/486202[SDGs]SDG11Focusing properties of microspheres containing multiconcentric metallic ringsjournal article10.1063/1.32002432-s2.0-68349152547https://www.scopus.com/inward/record.uri?eid=2-s2.0-68349152547&doi=10.1063%2f1.3200243&partnerID=40&md5=8f2b18d638f70e2774dcea7ba315319f