Mechanisms of two-step yielding in attractive colloidal glasses

2020 ◽  
Vol 64 (5) ◽  
pp. 1209-1225 ◽  
Author(s):  
Esmaeel Moghimi ◽  
George Petekidis
Keyword(s):  
Colloidal Glasses

scholarly journals A thermodynamic description of colloidal glasses

2013 ◽  
Vol 103 (4) ◽  
pp. 46005 ◽  
Author(s):  
Mauro Sellitto ◽  
Francesco Zamponi
Keyword(s):  
Thermodynamic Description ◽  
Colloidal Glasses

Ion-Induced Formation of Nanocrystalline Cellulose Colloidal Glasses Containing Nematic Domains

Langmuir ◽  
2019 ◽  
Vol 35 (11) ◽  
pp. 4117-4124 ◽  
Author(s):  
Pascal Bertsch ◽  
Antoni Sánchez-Ferrer ◽  
Massimo Bagnani ◽  
Stéphane Isabettini ◽  
Joachim Kohlbrecher ◽  
...  
Keyword(s):  
Nanocrystalline Cellulose ◽  
Colloidal Glasses

scholarly journals Resolving structural modifications of colloidal glasses by combining x-ray scattering and rheology

2013 ◽  
Vol 3 (1) ◽  
Author(s):  
D. Denisov ◽  
M. T. Dang ◽  
B. Struth ◽  
G. Wegdam ◽  
P. Schall
Keyword(s):  
X Ray ◽  
Structural Modifications ◽  
X Ray Scattering ◽  
Colloidal Glasses ◽  
Ray Scattering

A high-frequency piezoelectric rheometer with validation of the loss angle measuring loop: application to polymer melts and colloidal glasses

2019 ◽  
Vol 58 (9) ◽  
pp. 619-637 ◽  
Author(s):  
Thanasis Athanasiou ◽  
Gunter K. Auernhammer ◽  
Dimitris Vlassopoulos ◽  
George Petekidis
Keyword(s):  
High Frequency ◽  
Polymer Melts ◽  
Loss Angle ◽  
Angle Measuring ◽  
Colloidal Glasses

Ageing and yield behaviour in model soft colloidal glasses

2009 ◽  
Vol 367 (1909) ◽  
pp. 5051-5071 ◽  
Author(s):  
C. Christopoulou ◽  
G. Petekidis ◽  
B. Erwin ◽  
M. Cloitre ◽  
D. Vlassopoulos
Keyword(s):  
Glassy State ◽  
High Stress ◽  
Elastic Solid ◽  
Elastic Response ◽  
Slow Step ◽  
Recoverable Strain ◽  
Highly Nonlinear ◽  
Yield Behaviour ◽  
Colloidal Glasses ◽  
Stress Dependent

We use multi-arm star polymers as model soft colloids with tuneable interactions and explore their behaviour in the glassy state. In particular, we perform a systematic rheological study with a well-defined protocol and address aspects of ageing and shear melting of star glasses. Ageing proceeds in two distinct steps: a fast step of O (10 3  s) and a slow step of O (10 4  s). We focus on creep and recovery tests, which reveal a rich, albeit complex response. Although the waiting time, the time between pre-shear (rejuvenation) of the glassy sample and measurement, affects the material’s response, it does not play the same role as in other soft glasses. For stresses below the yield value, the creep curve is divided into three regimes with increasing time: viscoplastic, intermediate steady flow (associated with the first ageing step) and long-time evolving elastic solid. This behaviour reflects the interplay between ageing and shear rejuvenation. The yield behaviour, as investigated with the stress-dependent recoverable strain, indicates a highly nonlinear elastic response intermediate between a low-stress Hookean solid and a high-stress viscoelastic liquid, and exemplifies the distinct characteristics of this class of hairy colloids. It appears that a phenomenological classification of different colloidal glasses based on yielding performance may be possible.

scholarly journals Strain-accelerated dynamics of soft colloidal glasses

2011 ◽  
Vol 83 (4) ◽  
Author(s):  
Praveen Agarwal ◽  
Lynden A. Archer
Keyword(s):  
Colloidal Glasses

Shear banding phenomena in ultrasoft colloidal glasses

2004 ◽  
Vol 48 (5) ◽  
pp. 1085-1102 ◽  
Author(s):  
William M. Holmes ◽  
Paul T. Callaghan ◽  
Dimitris Vlassopoulos ◽  
Jacques Roovers
Keyword(s):  
Shear Banding ◽  
Colloidal Glasses

scholarly journals Connecting short and long time dynamics in hard-sphere-like colloidal glasses

Soft Matter ◽  
2015 ◽  
Vol 11 (3) ◽  
pp. 622-626 ◽  
Author(s):  
Raffaele Pastore ◽  
Massimo Pica Ciamarra ◽  
Giuseppe Pesce ◽  
Antonio Sasso
Keyword(s):  
Single Particle ◽  
Particle Motion ◽  
Hard Sphere ◽  
Time Dynamics ◽  
Long Time ◽  
Colloidal Glasses ◽  
Long Time Dynamics ◽  
Single Particle Motion

We connect the intermittent single particle motion and the macroscopic dynamics in experiments on colloidal glasses.

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