| Literature DB >> 21599108 |
Raghav K Chhetri1, Krystian A Kozek, Aaron C Johnston-Peck, Joseph B Tracy, Amy L Oldenburg.
Abstract
We demonstrate depth-resolved viscosity measurements within a single object using polarized optical scattering from ensembles of freely tumbling plasmon resonant gold nanorods (GNRs) monitored with polarization-sensitive optical coherence tomography. The rotational diffusion coefficient of the GNRs is shown to correlate with viscosity in molecular fluids according to the Stokes-Einstein relation. The plasmon resonant and highly anisotropic properties of GNRs are favorable for microrheological studies of nanoscale properties. ©2011 American Physical SocietyEntities:
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Year: 2011 PMID: 21599108 PMCID: PMC3116207 DOI: 10.1103/PhysRevE.83.040903
Source DB: PubMed Journal: Phys Rev E Stat Nonlin Soft Matter Phys ISSN: 1539-3755