Scientific AchievementRexNi1-x inverseopalswithexceptionalthermalandopticalpropertieswererealizedviacolloidalcrystaltemplatedaqueouselectrodeposition(xwascontrollablefrom0to0.88).Theywerestabletoatleast1000°Candexhibitedstrongfrequencydependentopticalreflectivity.
Significance and ImpactThisisapromisingapproachforformingthermallystablemesostructuredmaterialsforhightemperaturecatalystsupports,filters,andactuators.Particularlypromisingistheirpotentialashightemperaturespectrallyselectiveopticalabsorbersandemitters.
Research Details– Re0.88Ni0.12 alloyswerethemostthermallystable;stabilitydecreasedwithdecreasingRecontent
– Electrodepositionwasperformedatroomtemperatureusinganaqueous electrolyte
– Colloidaltemplateswereformedfrompolystyrenecolloidsusingconventionalself-assemblyprocedures
Ultra-High Thermal Stability Re0.88Ni0.12 Inverse Opals
Topleft,3Dinverseopalstructure.Topright,SEMimageofaRe0.88Ni0.12 inverseopalafterannealingat1000°Cfor1hour.Bottom,reflectancevs.wavelengthshowingstrongreflectancemodulationevenafterheating.WorkwasperformedattheUniversityofIllinoisatUrbana-ChampaignandStanfordUniversity
RunyuZhang,JosephCohen,ShanhuiFan,PaulV.Braun,Nanoscale,2017,9,11187
October2017ResearchHighlight