Document Detail


Modulating Physical Properties of Isolated and Self-Assembled Nanocrystals Through Change in Nanocrystallinity.
MedLine Citation:
PMID:  23272764     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
For self-assembled nanocrystals in 3D superlattices, called supracrystals, the crystalline structure of the metal nanocrystals (either single domain or polycrystallines) or nanocrystallinity, is likely to induce significant changes in the physical properties. Previous studies demonstrated that spontaneous nanocrystallinity segregation takes place in colloidal solution upon self-assembling of 5 nm dodecanethiol-passivated Au nanocrystals. This segregation allows the exclusive selection of single domain and polycrystalline nanoparticles and consequently producing supracrystals with these building blocks. Here, we investigate the influence of nanocrystallinity on different properties of nanocrystals with either single domain or polycrystalline structure. In particular, the influence of nanocrystallinity on the localized surface plasmon resonance of individual nanocrystals dispersed in the same dielectric media is reported. Moreover, the frequencies of the radial breathing mode of single domain and polycrystalline nanoparticles are measured. Finally, orientational ordering of single domain nanocrystals markedly changes the supracrystal elastic moduli compared to supracrystals of polycrystalline nanocrystals.
Authors:
Nicolas Goubet; Cong Yan; Dario Polli; Hervé Portalès; Imad Arfaoui; Giulio Cerullo; Marie-Paule Pileni
Related Documents :
22002354 - Angle-resolved reflectance and surface plasmonics of the max phases.
22974234 - Structural and nanomechanical properties of paperboard composite coatings studied by pe...
21919464 - Facile preparation of plate-like structured tungsten oxide thin film electrodes with hi...
23420044 - Properties of water in the region between a tubulin dimer and a single motor head of ki...
15943024 - Development of engineered stationary phases for the separation of carotenoid isomers.
15638604 - Surface solvation for an ion in a water cluster.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-31
Journal Detail:
Title:  Nano letters     Volume:  -     ISSN:  1530-6992     ISO Abbreviation:  Nano Lett.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088070     Medline TA:  Nano Lett     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  2011 Annual Report of the American Association of Poison Control Centers' National Poison Data Syste...
Next Document:  Synthesis of Fused Bromofurans via Mg Mediated Dibromocyclopropanation of Cycloalkanone Derived Chal...