Concentration dependent phase behavior and collapse dynamics of PNIPAM microgel by dielectric relaxation

2017 ◽  
Vol 19 (23) ◽  
pp. 15433-15443 ◽  
Author(s):  
Man Yang ◽  
Chunyan Liu ◽  
Kongshuang Zhao
Keyword(s):  
Phase Transition ◽  
Phase Separation ◽  
Dielectric Relaxation ◽  
Phase Behavior ◽  
Colloidal Crystal ◽  
P Concentration ◽  
Dense System ◽  
Dilute System

Concentration dependent phase behavior of microgel: the dense system underwent a phase transition from colloidal crystal to liquid and to phase separation (above); the dilute system only underwent a transition from liquid to phase separation (below).

Temperature-dependent Reentrant Phase Transition of RNA-polycation Mixtures

Soft Matter ◽  
2022 ◽  
Author(s):  
Paul Pullara ◽  
Ibraheem Alshareedah ◽  
Priya Banerjee
Keyword(s):  
Phase Transition ◽  
Phase Separation ◽  
Liquid Phase ◽  
Phase Behavior ◽  
Soft Matter ◽  
Biological Systems ◽  
Liquid Phase Separation ◽  
Temperature Dependent ◽  
Liquid Liquid Phase Separation

Liquid-liquid phase separation (LLPS) of multivalent biopolymers is a ubiquitous process in biological systems and is of importance in bio-mimetic soft matter design. The phase behavior of biomolecules, such as...

Volume phase transition of electron beam cross-linked thermo-responsive PVME nanogels in the presence and absence of nanoparticles: with a view toward rheology and interactions

RSC Advances ◽  
2016 ◽  
Vol 6 (12) ◽  
pp. 9693-9708 ◽  
Author(s):  
Ashkan Shoja Chaykar ◽  
Fatemeh Goharpey ◽  
Jafar Khademzadeh Yeganeh
Keyword(s):  
Phase Transition ◽  
Electron Beam ◽  
Phase Separation ◽  
Radiation Dose ◽  
Phase Behavior ◽  
Separation Mechanism ◽  
Volume Phase Transition ◽  
Volume Phase ◽  
Presence And Absence ◽  
Phase Separation Mechanism

We investigate the effect of nanoparticles and radiation dose on interactions in the PVME-based nanogel system and its phase behavior (swelling/deswelling behavior and phase separation mechanism) by rheological and FTIR measurements.

scholarly journals Optical tracking of relaxation dynamics in semi-dilute hydroxypropylcellulose solutions as a precise phase transition probe

Soft Matter ◽  
2017 ◽  
Vol 13 (39) ◽  
pp. 7161-7171 ◽  
Author(s):  
Hernan Garate ◽  
King-Wo Li ◽  
Denis Bouyer ◽  
Patrick Guenoun
Keyword(s):  
Phase Transition ◽  
Phase Separation ◽  
Optical Tracking ◽  
Relaxation Dynamics ◽  
Responsive Polymers ◽  
Complex Process

Phase separation of thermo-responsive polymers in solution is a complex process, whose understanding is improved by following the dynamical modes as the transition is approached.

scholarly journals Mixed-order phase transition in a colloidal crystal

2017 ◽  
Vol 114 (49) ◽  
pp. 12906-12909 ◽  
Author(s):  
Ricard Alert ◽  
Pietro Tierno ◽  
Jaume Casademunt
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Colloidal Particles ◽  
Colloidal Crystal ◽  
Equilibrium Phase ◽  
Mean Field ◽  
Critical Dimension ◽  
Colloidal System ◽  
Test Bed ◽  
Mixed Order

Mixed-order phase transitions display a discontinuity in the order parameter like first-order transitions yet feature critical behavior like second-order transitions. Such transitions have been predicted for a broad range of equilibrium and nonequilibrium systems, but their experimental observation has remained elusive. Here, we analytically predict and experimentally realize a mixed-order equilibrium phase transition. Specifically, a discontinuous solid–solid transition in a 2D crystal of paramagnetic colloidal particles is induced by a magnetic field H. At the transition field Hs, the energy landscape of the system becomes completely flat, which causes diverging fluctuations and correlation length ξ∝|H2−Hs2|−1/2. Mean-field critical exponents are predicted, since the upper critical dimension of the transition is du=2. Our colloidal system provides an experimental test bed to probe the unconventional properties of mixed-order phase transitions.

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