ResearchersdevelopopticaldiskmemorywithpetabitcapacityinChina_GuangmingOnlineResearchersperformanexperimentatalaboratoryintheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciencesineastChina'sShanghai,Feb.29,2024.Athree-dimensionalnanoscaleopticaldiskmemorywithpetabitcapacityhasbeendevelopedattheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciences,accordingtoanarticlepublishedonFeb.22inNature.Theresearchteammanagedtoincreasethecapacityofopticaldatastoragetothepetabitlevelbyextendingtheplanarrecordingarchitecturetothreedimensionswithhundredsoflayers,whilealsobreakingtheopticaldiffractionlimitbarrieroftherecordedspots.Theminimumspotsizeandlateraltrackpitchare54nmand70nm,respectively.Theteamdevelopedanopticalrecordingmediumbasedonaphotoresistfilmdopedwithaggregation-inducedemissiondye,whichcanbeopticallystimulatedbyfemtosecondlaserbeams.Thenewtechnologymarkstheworld'sfirstachievementofapetabit-levelcapacityopticaldisk.(Xinhua/JinLiwang)ResearcherZhaoMiaodebugsexperimentequipmentatalaboratoryintheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciencesineastChina'sShanghai,Feb.29,2024.(Xinhua/JinLiwang)ResearchersperformanexperimentatalaboratoryintheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciencesineastChina'sShanghai,Feb.29,2024.(Xinhua/JinLiwang)ResearcherZhaoMiaodebugsexperimentequipmentatalaboratoryintheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciencesineastChina'sShanghai,Feb.29,2024.(Xinhua/FangZhe)ResearcherZhaoMiaoshowsathree-dimensionalnanoscaleopticaldiskmemorywithpetabitcapacityatalaboratoryintheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciencesineastChina'sShanghai,Feb.29,2024.(Xinhua/FangZhe)ResearchersperformanexperimentatalaboratoryintheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciencesineastChina'sShanghai,Feb.29,2024.(Xinhua/FangZhe)ResearcherRuanHaoworksatalaboratoryintheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciencesineastChina'sShanghai,Feb.29,2024.(Xinhua/JinLiwang)ThisphototakenonFeb.29,2024showsexperimentmaterialsintheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciencesineastChina'sShanghai.(Xinhua/JinLiwang)ResearcherZhaoMiaoobservesexperimentmaterialsatalaboratoryintheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciencesineastChina'sShanghai,Feb.29,2024.(Xinhua/JinLiwang)ReseacherswearmasksatalaboratoryintheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciencesineastChina'sShanghai,Feb.29,2024.(Xinhua/FangZhe)ResearcherZhaoMiaoshowsathree-dimensionalnanoscaleopticaldiskmemorywithpetabitcapacityintheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciencesineastChina'sShanghai,Feb.29,2024.(Xinhua/JinLiwang)ResearcherZhaoMiaoobservesexperimentmaterialsviaamicroscopeatalaboratoryintheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciencesineastChina'sShanghai,Feb.29,2024.(Xinhua/FangZhe)ResearchersperformanexperimentatalaboratoryintheShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciencesineastChina'sShanghai,Feb.29,2024.(Xinhua/FangZhe)Editor:DisclaimerTheviewsandopinionsexpressedinthisarticlearethoseoftheauthor's,GMW.cnmakesnorepresentationsastoaccuracy,suitability,orvalidityofanyinformationonthissiteandwillnotbeliableforanyerrors,omissions,ordelaysinthisinformation.