Kenneth S. Schweizer
University of Illinois at Urbana–Champaign
ParticlePhysicsStatistical physicsNanoparticleNonlinear systemChemical physicsChemistryMaterials scienceCondensed matter physicsLangevin equationMicroscopic theoryRelaxation (NMR)PolymerColloidVolume fractionClassical mechanicsThermodynamics
409Publications
80H-index
12.1kCitations
Publications 402
Newest
#1Baicheng Mei (UIUC: University of Illinois at Urbana–Champaign)H-Index: 5
#2Yuxing Zhou (UIUC: University of Illinois at Urbana–Champaign)H-Index: 8
Last. Kenneth S. SchweizerH-Index: 80
view all 3 authors...
Source
#1Baicheng Mei (UIUC: University of Illinois at Urbana–Champaign)H-Index: 5
#2Yuxing Zhou (UIUC: University of Illinois at Urbana–Champaign)H-Index: 8
Last. Kenneth S. Schweizer (UIUC: University of Illinois at Urbana–Champaign)H-Index: 80
view all 3 authors...
We establish via an in-depth analysis of experimental data that the dimensionless compressibility (proportional to the dimensionless amplitude of long wavelength thermal density fluctuations) of one-component normal and supercooled liquids of chemically complex nonpolar and weakly polar molecules and polymers follows extremely well a surprisingly simple and general temperature dependence over an exceptionally wide range of pressures and temperatures. A theoretical basis for this behavior is show...
Source
#1Baicheng MeiH-Index: 5
#2Zachary E. DellH-Index: 6
Last. Kenneth S. SchweizerH-Index: 80
view all 3 authors...
Source
#1Baicheng Mei (UIUC: University of Illinois at Urbana–Champaign)H-Index: 5
#2Kenneth S. Schweizer (UIUC: University of Illinois at Urbana–Champaign)H-Index: 80
We generalize the self-consistent cooperative hopping theory for a dilute spherical penetrant or tracer activated dynamics in dense metastable hard sphere fluids and glasses to address the effect of external stress, the consequences of which are systematically established as a function of matrix packing fraction and penetrant-to-matrix size ratio. All relaxation processes speed up under stress, but the difference between the penetrant and matrix hopping (alpha relaxation) times decreases signifi...
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#1Asieh Ghanekarade (USF: University of South Florida)H-Index: 3
#2Anh D. PhanH-Index: 19
Last. David S. Simmons (USF: University of South Florida)H-Index: 20
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Molecular, polymeric, colloidal, and other classes of liquids can exhibit very large, spatially heterogeneous alterations of their dynamics and glass transition temperature when confined to nanoscale domains. Considerable progress has been made in understanding the related problem of near-interface relaxation and diffusion in thick films. However, the origin of "nanoconfinement effects" on the glassy dynamics of thin films, where gradients from different interfaces interact and genuine collectiv...
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#1Benjamin M. Yavitt (SBU: Stony Brook University)H-Index: 9
#2Daniel Salatto (SBU: Stony Brook University)H-Index: 4
Last. Kenneth S. Schweizer (UIUC: University of Illinois at Urbana–Champaign)H-Index: 80
view all 11 authors...
Source
#1Gaurav Chaudhary (Harvard University)H-Index: 6
#2Ashesh Ghosh (Stanford University)H-Index: 4
Last. Kenneth S. SchweizerH-Index: 80
view all 6 authors...
Abstract We present an integrated experimental and theoretical study of the dynamics and rheology of self-crosslinked, slightly charged, temperature responsive soft Poly(N-isopropylacrylamide) (pNIPAM) microgels over a wide range of concentration and temperature spanning the sharp change in particle size and intermolecular interactions across the lower critical solution temperature (LCST). Dramatic, non-monotonic changes in viscoelasticity are observed as a function of temperature, with distinct...
Source
#1Baicheng Mei (UIUC: University of Illinois at Urbana–Champaign)H-Index: 5
#2Yuxing Zhou (UIUC: University of Illinois at Urbana–Champaign)H-Index: 8
Last. Kenneth S. Schweizer (UIUC: University of Illinois at Urbana–Champaign)H-Index: 80
view all 3 authors...
Understanding in a unified manner the generic and chemically specific aspects of activated dynamics in diverse glass-forming liquids over 14 or more decades in time is a grand challenge in condensed matter physics, physical chemistry, and materials science and engineering. Large families of conceptually distinct models have postulated a causal connection with qualitatively different "order parameters" including various measures of structure, free volume, thermodynamic properties, short or interm...
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