ISIS Data Journal

The archive for ISIS research data


Investigation title: Confinement and Liquid Crystal Films.

Release date: Sat Mar 21 08:44:59 GMT 2015

Creator: Professor Rob Richardson
Creator: Dr Laura Mears
Creator: Professor Terence Cosgrove
Creator: Dr Wiebe De Vos
Creator: Dr Stuart Prescott
Creator: Mr Alex Malins

DOI: 10.5286/ISIS.E.24088649

Date of Experiment: Thu Mar 15 16:22:12 GMT 2012

Publisher: STFC ISIS Facility

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:
Professor Rob Richardson et al; (2012): 1210220, STFC ISIS Facility, doi:10.5286/ISIS.E.24088649


Liquid crystals (LCs) are known to act as good lubricants, however, the reason for this remains unclear. One contributing factor is thought to be the formation of ordered layers at the surface which grow out into the bulk, known as smectic wetting. We have recently developed a surface force style apparatus which combines neutron reflection with confinement of a thin LC film between a silicon surface and an inflated flexible membrane. By confining three different cyanobiphenyls (6, 8 and 10CB) which have a deuterated biphenyl core we will track the onset of smectic wetting with increasing confinement. The different CBs have various amounts of intrinsic tendency to form smectic layers and the measurements will be taken just above the bulk transition temperature in order to determine the effect of confinement. Therefore we will increase understanding of this fundamental LC property.

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