The full list of my publications are recorded on the Edinburgh Research Explorer.  Some highlights are featured here:

Colloid Nematic Composite

A colloid-nematic composite (50%) is very stiff in the nematic phase (A) yet fluid in the isotropic phase (B)

Composites of colloids in nematic liquid crystals

When colloidal particles are dispersed in a nematic liquid crystal medium the composite exhibits very interesting behaviour.  At volume fractions above 20% it becomes very stiff and, together with rheological data, simulations indicate that a colloidal gel is held together by defect lines percolating through the sample.  These composites could find applications in sensor technologies.  This novel behaviour was published in the top international journal Science in 2011.

(ICMCS, University of Edinburgh, 2011)

Self assembly of colloids with planar anchoring in a nematic (top row) and a cholesteric (bottom row)

Self-assembly of colloids in liquid crystals

When colloids are dispersed in a liquid crystal molecules will either align parallel or perpendicular to the colloid surface.  For the case of planar anchoring colloids dispersed in a nematic liquid crystal form chains.  Our research demonstrated that colloids dispersed in a cholesteric phase form plate-like structures to minimise distortion of the cholesteric helix.   This research has interesting implications for the topic of self-assembling systems.

(ICMCS, University of Edinburgh, 2010)

A polymer particle can adopt a surface charge by preferentially absorbing positively or negatively charged micelles.

Electrostatic charging of non-polar colloids by reverse micelles

We studied the charging of non-polar colloids when surfactants were added that formed reverse micelles in the solution.  We showed that particle charging is  generated by the competitive adsorption of both positive and negative micelles.

(Paul Bartlett’s group, University of Bristol, 2008)

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s