TY  - JOUR
AU  - Rogers, S.A.
AU  - Lisicki, M.
AU  - Cichocki, B.
AU  - Dhont, J.K.G.
AU  - Lang, P.R.
TI  - Rotational Diffusion of Spherical Colloids Close to a Wall
JO  - Physical review letters
VL  - 109
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-22839
SP  - 098305
PY  - 2012
N1  - The authors acknowledge financial support from the EU through FP7, project Nanodirect (Grant No. NMP4-SL-2008-213948). M. L. acknowledges support by the Foundation for Polish Science, which is co-financed by the European Union (EU)-European Regional Development Fund. B. C. acknowledges financial support from the Deutsche Forschungsgemeinschaft Grant No. SFB-TR6, "Physics of Colloidal Dispersions in External Fields," Project A1.
AB  - There is currently no experimental technique available to probe spatially resolved rotational diffusion of nanoparticles in the vicinity of a wall. We present the first experimental study of rotational diffusion of small spherical colloids, using dynamic evanescent wave scattering. A setup is used where the wave vector components parallel and perpendicular to the wall can be varied independently, and an expression is derived for the first cumulant of the intensity correlation function in VH evanescent wave geometry for optically anisotropic spheres. The experimental results are in agreement with theoretical predictions that take particle-wall hydrodynamic interactions into account.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000308134400018
DO  - DOI:10.1103/PhysRevLett.109.098305
UR  - https://juser.fz-juelich.de/record/22839
ER  -