Document Detail

Super-resolution imaging of interactions between molecules and plasmonic nanostructures.
MedLine Citation:
PMID:  23321954     Owner:  NLM     Status:  Publisher    
Super-resolution far-field imaging has recently emerged as a novel strategy for imaging interactions between plasmonic nanostructures and single molecules with spatial resolution <5 nm. In these experiments, the emission centroid of a diffraction-limited spot is modeled as a two-dimensional Gaussian, allowing the position of an emitter to be determined with nanoscale precision. In this perspective, we describe the principles of super-resolution far-field imaging and then highlight its application to several different problems in plasmonics, including surface-enhanced fluorescence of ligands bound to nanoparticle surfaces, nanoparticle-mediated catalysis, and mapping electromagnetic hot spots. In all cases, the complex coupling between molecular emission and plasmon modes of the underlying nanostructure must be considered. While this complicates the interpretation of super-resolution images of plasmonic systems, the coupling also opens new doors for understanding the fundamental interactions between molecules and plasmonic nanostructures.
Katherine A Willets
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-16
Journal Detail:
Title:  Physical chemistry chemical physics : PCCP     Volume:  -     ISSN:  1463-9084     ISO Abbreviation:  Phys Chem Chem Phys     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100888160     Medline TA:  Phys Chem Chem Phys     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Chemistry and Biochemistry, The University of Texas at Austin, Welch Hall 2.204, 105 E. 24th St. STOP A5300, Austin, Texas 78712-1224, USA.
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