October 2017 Research Highlight Ultra-High Thermal ... · Scientific Achievement Re xNi 1-x inverse...

Scientific Achievement Re x Ni 1-x inverse opals with exceptional thermal and optical properties were realized via colloidal crystal templated aqueous electrodeposition (x was controllable from 0 to 0.88). They were stable to at least 1000 ° C and exhibited strong frequency dependent optical reflectivity. Significance and Impact This is a promising approach for forming thermally stable mesostructured materials for high temperature catalyst supports, filters, and actuators. Particularly promising is their potential as high temperature spectrally selective optical absorbers and emitters. Research Details – Re 0.88 Ni 0.12 alloys were the most thermally stable; stability decreased with decreasing Re content – Electrodeposition was performed at room temperature using an aqueous electrolyte – Colloidal templates were formed from polystyrene colloids using conventional self-assembly procedures Ultra-High Thermal Stability Re 0.88 Ni 0.12 Inverse Opals Top left, 3D inverse opal structure. Top right, SEM image of a Re 0.88 Ni 0.12 inverse opal after annealing at 1000 °C for 1 hour. Bottom, reflectance vs. wavelength showing strong reflectance modulation even after heating. Work was performed at the University of Illinois at Urbana-Champaign and Stanford University Runyu Zhang, Joseph Cohen, Shanhui Fan, Paul V. Braun, Nanoscale, 2017, 9, 11187 October 2017 Research Highlight

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Transcript of October 2017 Research Highlight Ultra-High Thermal ... · Scientific Achievement Re xNi 1-x inverse...

Page 1: October 2017 Research Highlight Ultra-High Thermal ... · Scientific Achievement Re xNi 1-x inverse opals with exceptional thermal and optical properties were realized via colloidal

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

OPALS BASICS: An Introduction to the Updated OPALS SysteM · into the OPALS system. In the screenshot are three main areas. The first area (1) contains all of the OPALS navigation

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The rheology and processing of “edge sheared” … · The rheology and processing of “edge sheared” colloidal polymer opals Hon Sum Wong, Malcolm Mackley,a) ... Polymer opals

The rheology and processing of “edge sheared” colloidal polymer opals · The rheology and processing of “edge sheared” colloidal polymer opals By Hon Sum Wong, Malcolm Mackley

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A Fundamental Study of Pt100-xNi

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$Laser diffraction study of inverse opals€¦ · opals in a replication process due to the removal of volatile NSTI-Nanotech 2007, , ISBN 1420063766 Vol. 4, 2007 163. components.$