ISIS Neutron and Muon Source Data Journal

Microscopic Dynamics in Photorehological Fluids

Abstract: Photorheological (PR) fluids are the fluids with light-tunable rheological properties and are very useful in a variety of applications. Cetyl trimethylammonium bromide (CTAB) micelles and ortho-methoxycinnamic acid (OMCA) based PR fluids have attracted recent attention because they require no special synthesis. It has been shown that in the presence of trans-OMCA, CTAB micelles form long and wormlike micelles, and upon irradiation by UV light, OMCA undergoes a photoisomerization from its trans to its cis form, and the viscosity of the micellar solution is reduced by 4 orders of magnitude. This is feasible mainly due to the alteration of the molecular packing at the micellar interface. Our Aim is to investigate the effect of OMCA on the microscopic dynamics of CTAB micelles using quasielastic neutron scattering and establish a correlation with the observed viscosity.

Principal Investigator: Dr Subhankur Mitra
Experimenter: Dr Veerendra K Sharma
Experimenter: Dr Victoria Garcia Sakai
Experimenter: Mr Harish Srinivasan
Experimenter: Dr Ramaprosad Mukhopadhyay

DOI: 10.5286/ISIS.E.RB1820153

ISIS Experiment Number: RB1820153

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Subhankur Mitra et al; (2018): Microscopic Dynamics in Photorehological Fluids, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1820153

Data is released under the CC-BY-4.0 license.