Document Detail

Synthesis and characterization of a nanocrystalline diamond aerogel.
MedLine Citation:
PMID:  21555550     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Aerogel materials have myriad scientific and technological applications due to their large intrinsic surface areas and ultralow densities. However, creating a nanodiamond aerogel matrix has remained an outstanding and intriguing challenge. Here we report the high-pressure, high-temperature synthesis of a diamond aerogel from an amorphous carbon aerogel precursor using a laser-heated diamond anvil cell. Neon is used as a chemically inert, near-hydrostatic pressure medium that prevents collapse of the aerogel under pressure by conformally filling the aerogel's void volume. Electron and X-ray spectromicroscopy confirm the aerogel morphology and composition of the nanodiamond matrix. Time-resolved photoluminescence measurements of recovered material reveal the formation of both nitrogen- and silicon- vacancy point-defects, suggesting a broad range of applications for this nanocrystalline diamond aerogel.
Peter J Pauzauskie; Jonathan C Crowhurst; Marcus A Worsley; Ted A Laurence; A L David Kilcoyne; Yinmin Wang; Trevor M Willey; Kenneth S Visbeck; Sirine C Fakra; William J Evans; Joseph M Zaug; Joe H Satcher
Publication Detail:
Type:  Journal Article     Date:  2011-05-09
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  108     ISSN:  1091-6490     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-05-25     Completed Date:  2011-10-07     Revised Date:  2011-12-21    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  8550-3     Citation Subset:  -    
Lawrence Livermore National Laboratory, Livermore, CA 94551, USA.
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