Search Results - "Chandran, Sivasurender"
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Processing Pathways Decide Polymer Properties at the Molecular Level
Published in Macromolecules (08-10-2019)“…Conditions of rapid processing often drive polymers to adopt nonequilibrium molecular conformations, which, in turn, can give rise to structural, dynamical,…”
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2
Controlling Polymer Crystallization Kinetics by Sample History
Published in Macromolecular chemistry and physics (01-02-2018)“…In this paper systematic changes in the isothermal crystallization kinetics (at Tc = 200 °C) of nonequilibrated isotactic polystyrene films, generated through…”
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3
Electric Field Driven Reversible Spinodal Dewetting of Thin Liquid Films on Slippery Surfaces
Published in Advanced materials interfaces (01-03-2023)“…The stability of thin liquid films on a surface depends on the excess free energy of the system involving various short‐range and long‐range interactions. When…”
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Time Allowed for Equilibration Quantifies the Preparation Induced Nonequilibrium Behavior of Polymer Films
Published in ACS macro letters (21-11-2017)“…Performance and properties of materials may strongly depend on processing conditions. This is particularly so for polymers, which often have relaxation times…”
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Pattern Formation in Evaporating Polymer SolutionsInterplay between Dewetting and Decomposition
Published in ACS polymers Au (14-08-2024)“…Pattern formation during solution evaporation is common in several industrial settings and involves a complex interplay of multiple processes, including…”
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Deciphering the influence of NaCl on social behaviour of Bacillus subtilis
Published in Royal Society open science (01-09-2024)“…Various environmental signals, such as temperature, pH, nutrient levels, salt content and the presence of other microorganisms, can influence biofilm's…”
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Harnessing Polar Interactions Tunes the Stability of Ultrathin Polymer Solution Films
Published in Langmuir (20-08-2024)“…The stability of ultrathin (<100 nm) polymer films is essential in applications like protective coatings. On the contrary, their instability may actually be…”
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Fast Processing Affects the Relaxation of Polymers: The Slow Arrhenius Process Can Probe Stress at the Molecular Level
Published in The journal of physical chemistry letters (09-05-2024)“…Polymer materials are commonly processed at rates higher than those at which their molecules spontaneously reach equilibrium conditions. The resulting…”
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Transient Cooperative Processes in Dewetting Polymer Melts
Published in Physical review letters (26-02-2016)“…We compare the high velocity dewetting behavior, at elevated temperatures, of atactic polystyrene (aPS) and isotactic polystyrene (iPS) films, with the zero…”
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Microscopic Dynamics of Liquid-Liquid Phase Separation and Domain Coarsening in a Protein Solution Revealed by X-Ray Photon Correlation Spectroscopy
Published in Physical review letters (02-04-2021)“…While the interplay between liquid-liquid phase separation (LLPS) and glass formation in biological systems is highly relevant for their structure formation…”
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11
Segmental Rearrangements Relax Stresses in Nonequilibrated Polymer Films
Published in ACS macro letters (18-06-2019)“…We probed the relaxation of preparation-induced residual stresses in nonequilibrated polymer films through dewetting experiments. While we observed fast…”
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Kinetics of Network Formation and Heterogeneous Dynamics of an Egg White Gel Revealed by Coherent X-Ray Scattering
Published in Physical review letters (05-03-2021)“…The kinetics of heat-induced gelation and the microscopic dynamics of a hen egg white gel are probed using x-ray photon correlation spectroscopy along with…”
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13
Formation of Needle-like Poly(3-hexylthiophene) Crystals from Metastable Solutions
Published in Macromolecules (13-10-2020)“…We investigated the formation of crystalline structures of conjugated poly(3-hexylthiophene) (P3HT) from supersaturated solutions. To this end, we induced…”
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14
Confinement enhances dispersion in nanoparticle–polymer blend films
Published in Nature communications (08-05-2014)“…Polymer nanocomposites constitute an important class of materials whose properties depend on the state of dispersion of the nanoparticles in the polymer…”
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15
Primary Nucleation in Metastable Solutions of Poly(3-hexylthiophene)
Published in Macromolecules (26-04-2022)“…Because of its smallness and low probability of formation, the determination of the size of the critical primary nucleus represents a great challenge in…”
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16
Formation of Periodically Modulated Polymer Crystals
Published in Macromolecules (14-08-2018)“…We report novel morphologies with periodic height modulations of isotactic polystyrene (iPS) crystals, resulting from alternating stacks of correlated…”
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17
Harnessing density to control the duration of intermittent Lévy walks in bacterial turbulence
Published in Physical review. E (01-07-2024)“…Dense bacterial suspensions display collective motion exhibiting coherent flow structures reminiscent of turbulent flows. However, in contrast to inertial…”
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Anomalous Viscosity Reduction and Hydrodynamic Interactions of Polymeric Nanocolloids in Polymers
Published in Macromolecules (22-09-2015)Get full text
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Dewetting Rheology for Determining Viscoelastic Properties of Nonequilibrated Thin Polymer Films
Published in Macromolecules (22-10-2019)“…We performed systematic dewetting experiments on isotactic poly(para-methylstyrene) (iPpMS) films to explore the temperature dependence of the viscoelastic…”
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Coherent X-ray scattering reveals nature of dynamical transitions in nanoparticle–polymer suspensions
Published in Polymer (Guilford) (22-11-2016)“…We report the microrheological behavior and dynamics of the suspensions of polystyrene-grafted gold nanoparticles (PGNPs) mixed with linear polystyrene (PS) as…”
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