Dynamics of Concentrated Hard-Sphere Colloids Near a Wall (2009)
Michailidou, V. N., Petekidis, G., Swan, J. W., Brady, J. F.
We investigate the Brownian motion of hard-sphere colloids near a solid wall by Evanescent Wave Dynamic Light Scattering (EWDLS). We carried out measurements for various volume fractions of...
Rheology, Structure and Dynamics of Colloid-Polymer Mixtures: from Liquids to Gels (2008)
Laurati, M., Petekidis, G., Koumakis, N., Cardinaux, F., Schofield, A. B., Brader, J. M., ...
We investigated the viscoelastic properties of colloid-polymer mixtures at intermediate colloid volume fraction and varying polymer concentrations, thereby tuning the attractive interactions. Within...
Slip and flow of hard-sphere colloidal glasses (2008)
Ballesta, P., Besseling, R., Isa, L., Petekidis, G., Poon, W. C. K.
We study the flow of concentrated hard-sphere colloidal suspensions along smooth, non-stick walls using cone-plate rheometry and simultaneous confocal microscopy. In the glass regime, the global flow...
Effects of Shear-Induced Crystallization on the Rheology and Ageing of Hard Sphere Glasses (2008)
Koumakis, N., Schofield, A. B., Petekidis, G.
The rheological properties of highly concentrated suspensions of hard-sphere particles are studied with particular reference to the rheological response of shear induced crystals. Using practically...
Phonons in suspensions of hard sphere colloids: Volume fraction dependence (2004)
Kriegs,H., Petekidis,G., Fytas,G., Penciu,R. S., Economou,E. N., Schofield,A. B.
Phonons in suspensions of hard sphere colloids: Volume fraction dependence (2004)
Kriegs, H., Petekidis, G., Fytas, G., Penciu, R. S., Economou, E. N., Schofield, A. B.
Phonons in colloidal systems (2003)
Penciu,R. S., Kriegs,H., Petekidis,G., Fytas,G., Economou,E. N.
Rich phonon spectra were observed experimentally by Brillouin spectroscopy in liquid, glassy, and crystalline state of colloidal systems of low and high elastic constant contrast. The nature of these...
Phonons in colloidal systems (2003)
Penciu, R. S., Kriegs, H., Petekidis, G., Fytas, G., Economou, E. N.
Rich phonon spectra were observed experimentally by Brillouin spectroscopy in liquid, glassy, and crystalline state of colloidal systems of low and high elastic constant contrast. The nature of these...
On the origin of the heterogeneous orientation dynamics of semiflexible polymers in solutions (2002)
Loppinet,B., Fytas,G., Petekidis,G., Sato,T., Wegner,Gerhard
Collective rotational motion in nondilute isotropic solutions of semirigid chains is sensitively probed by depolarized light scattering over a broad time range. The bit-nodal shape and the peculiar...
On the origin of the heterogeneous orientation dynamics of semiflexible polymers in solutions (2002)
Loppinet, B., Fytas, G., Petekidis, G., Sato, T., Wegner, Gerhard
Collective rotational motion in nondilute isotropic solutions of semirigid chains is sensitively probed by depolarized light scattering over a broad time range. The bit-nodal shape and the peculiar...
Dynamics of Wormlike Polymers in Solution: Self-Diffusion and Zero-Shear Viscosity (2000)
Petekidis, G., Vlassopoulos, D., Fytas, G., Fleischer, G., Wegner, Gerhard
Dynamics of Poly(p-phenylene) Ladder Polymers in Solution (1999)
Petekidis, G., Fytas, G., Scherf, Ullrich, Müllen, Klaus, Fleischer, G.