Olivier Cayre

PhD, Physical Chemistry & Colloid Science, 2005
University of Hull, Hull, UK

M.S., Physical Chemistry, 2001
University Paul Sabatier, Toulouse, France

B.S., Physical Chemistry, 1999
University Paul Sabatier, Toulouse, France

Curriculum Vitae

Research Focus: Induced Motion in Modified Colloidal Suspensions

The on-going collaboration between the Surfactant & Colloid group from the University of Hull and Dr. Velev’s group, here, at NCSU has given me the opportunity to work in Raleigh from December 2005 to December 2006. My previous research in Hull was concerned with the preparation of anisotropic latex particles. Some of the materials prepared then will be used for the project I will be working on at NCSU.

Figure 1: Images of anisotropic particles with (clockwise from top left) flying saucer shape, partial coating, ellipsoidal shape, and Janus anisotropies.

My research in Dr. Velev’s group is concerned with the use of such anisotropic systems for smart materials applications. We will focus on developing colloidal systems that are able of auto-motion or directed motion under the influence of an external force. In this project we will be using electric field forces as well as high frequency wave energy to induce and control the motion of modified particles. Latex and silica particle surfaces will be chemically or physically modified in order to prepare colloids highly responsive to external stimuli.


Cayre, O. J.; Chang, S. T.; Velev, O. D. Polyelectrolyte diode: Nonlinear current response of a junction between aqueous ionic gels. Journal of the American Chemical Society 2007, 129, 10801–10806.

Gangwal, S.; Cayre, O. J.; Bazant, M. Z.; Velev, O. D. Physical Review Letters 2008, 100, 058302.

Gangwal, S.; Cayre, O. J.; Velev, O. D. Dielectrophoretic assembly of metallodielectric Janus particles in AC electric fields. Langmuir 2008, 24, 13312–13320.