TY  - JOUR
AU  - July, C.
AU  - Lang, P. R.
TI  - Depletion interactions effected by different variants of fd virus
JO  - Langmuir
VL  - 26
SN  - 0743-7463
CY  - Washington, DC
PB  - ACS Publ.
M1  - PreJuSER-13066
SP  - 18647 - 18651
PY  - 2010
N1  - We thank Z. Dogic for the gift of the altered Y21M virus stock, P. Lettinga and K. Selinghoff for their help with the virus preparation. The authors acknowledge financial support from the EU through FP7, project Nanodirect (Grant No. NMP4-SL-2008-213948).
AB  - The depletion interaction between a probe sphere and a flat wall induced by fd virus is investigated by means of total internal reflection microscopy (TIRM). The viruses serve as a model system for monodisperse, rod-like colloids. We find that the experimental potentials are well described by the first-order density approximation up to an fd content of several overlap concentrations. This is in accordance with higher order density theory as confirmed by numerical calculations. Since the first-order analytical description still holds for all measurements, this exemplifies that higher order terms of the theory are unimportant for our system. Comparing the potentials induced by wild-type fd to those induced by a more rigid fd variant, it can be shown that the influence of the virus stiffness is beyond our experimental resolution and plays only a negligible role for the measured depletion potentials.
KW  - Bacteriophage M13: genetics
KW  - Bacteriophage M13: metabolism
KW  - Colloids
KW  - Microscopy
KW  - Mutation
KW  - Colloids (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:21073159
UR  - <Go to ISI:>//WOS:000285217700014
DO  - DOI:10.1021/la104151u
UR  - https://juser.fz-juelich.de/record/13066
ER  -