A5025095877- Atmospheric and Environmental Gas Dynamics
- Material Dynamics and Properties
- Polymer crystallization and properties
- Atmospheric chemistry and aerosols
- Force Microscopy Techniques and Applications
- Rheology and Fluid Dynamics Studies
- Theoretical and Computational Physics
- Protein Structure and Dynamics
- Dendrimers and Hyperbranched Polymers
- Polymer Nanocomposites and Properties
- Electrostatics and Colloid Interactions
- Geometric and Algebraic Topology
- Phase Equilibria and Thermodynamics
- Atmospheric Ozone and Climate
- Advanced Polymer Synthesis and Characterization
- Hydrocarbon exploration and reservoir analysis
- Surface and Thin Film Phenomena
- Nanopore and Nanochannel Transport Studies
- Advanced Chemical Physics Studies
- DNA and Nucleic Acid Chemistry
- Advanced Physical and Chemical Molecular Interactions
- Molecular spectroscopy and chirality
- Polymer Surface Interaction Studies
- Mechanical and Optical Resonators
- Adsorption, diffusion, and thermodynamic properties of materials
Utah State University
2014-2024
Binghamton University
2017-2024
Stevens Institute of Technology
2002-2013
National Institute of Standards and Technology
2007-2008
Universidad Politécnica de Madrid
2008
Michigan Molecular Institute (United States)
1988-2000
Cavendish Hospital
1991
University of Cambridge
1989-1990
University of Maryland, College Park
1988
Dartmouth College
1980-1983
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMonte Carlo studies of dendrimer macromoleculesMarc L. Mansfield and Leonid I. KlushinCite this: Macromolecules 1993, 26, 16, 4262–4268Publication Date (Print):August 1, 1993Publication History Published online1 May 2002Published inissue 1 August 1993https://pubs.acs.org/doi/10.1021/ma00068a029https://doi.org/10.1021/ma00068a029research-articleACS PublicationsRequest reuse permissionsArticle Views548Altmetric-Citations259LEARN ABOUT THESE...
Hydrogen-bonded multilayers of a neutral polymer (poly(N-vinylpyrrolidone), PVPON) with poly(methacrylic acid) (PMAA) were used as templates to introduce cross-links between PMAA layers using carbodiimide chemistry and ethylenediamine cross-linking agent. Upon exposure high pH, PVPON is completely released from the hydrogel matrix, producing surface-attached hydrogels. When such hydrogels are deposited at surface silica particles, particle core subsequently dissolved, hollow one-component...
Abstract Conformational energy calculations are used to investigate molecular motions in polyethylene crystals. From these a model is derived for the motion that accomplishes net rotation translation believed underlie nuclear magnetic resonance (NMR) and dielectric α processes polyethylenes paraffins (and their dipole decorated derivatives). The resulting found incorporate features of number previous models but differs significantly from all them. accomplished by means twisted (by 180°)...
The problem of calculating the electric polarizability tensor alpha(e) objects arbitrary shape has been reformulated in terms path integration and implemented computationally. method simultaneously yields electrostatic capacity C equilibrium charge density. These functionals particle are important many materials science applications, including conductivity viscosity filled suspensions. validated through comparison with exact results (for sphere, circular disk, touching spheres, tori), it...
A theoretical study of the (111) surfaces face-centred cubic transition and noble metals iridium, platinum gold is reported. The surface stress tensor energy unreconstructed each these materials has been calculated using pseudopotential total method. In case tensile, with for being smallest. implications results stability are discussed.
The Northern Wasatch Front area is one of ~ 50 metropolitan regions in the U.S. that do not meet 2015 O3 standard. To better understand causes high days this region we conducted Salt Lake regional Smoke, Ozone and Aerosol Study (SAMOZA) summer 2022. primary goals SAMOZA were:
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntrinsic viscosity of model Starburst dendrimersMarc L. Mansfield and I. KlushinCite this: J. Phys. Chem. 1992, 96, 10, 3994–3998Publication Date (Print):May 1, 1992Publication History Published online1 May 2002Published inissue 1 1992https://pubs.acs.org/doi/10.1021/j100189a016https://doi.org/10.1021/j100189a016research-articleACS PublicationsRequest reuse permissionsArticle Views327Altmetric-Citations83LEARN ABOUT THESE METRICSArticle Views are...
A Monte Carlo procedure for studying polymer chains in concentrated solution or the melt is described. The generates new configurations by breaking and reforming chains. used to examine dependence of rms end-to-end distance on chain length a simple cubic three-dimensional lattice with every site filled. Chains as many 512 segments were examined. proportional (N−1)ν N number ν range 0.51–0.52, rather than expected value 1/2. However, data seem indicate continuing decrease increasing so 1/2...
This paper describes research addressing the question of whether microscopic hydrogels can be created from poly(ethylene glycol) [PEG 6800] and oxide) [PEO 200K] using spatially resolved radiation a scanning electron microscope with an approach similar to that used in electron-beam patterning polymeric photoresists. We demonstrate that, indeed, PEG micrometer submicrometer feature sizes by this approach, we call these microhydrogels. Using solvent-free 6800 PEO 200K films ∼50−100-nm thick,...
First-principles calculations of the surface energy and stress tensor Pb (111) (110) surfaces are presented. The energies found to be almost same, in contrast results other calculations, which do not include three-dimensional character charge density a self-consistent manner. A very large inward relaxation outermost atomic layer is predicted, agreement with recent experimental results. origin understood terms spillout electronic at surface. jellium model provide rather poor description...
The transport properties of rodlike particles have been interest since the origins polymer science. Indeed, Staudinger initially believed that polymers had exclusively this structure, although Onsager soon discounted possibility through direct computation slender (ellipsoidal) and comparison with early solution measurements. History is apparently repeating itself in study carbon nanotubes, which are also often assumed to be generally rodlike. Computations rods such structures could described...
It is often difficult in practice to discriminate between equilibrium and non-equilibrium nanoparticle or colloidal-particle clusters that form through aggregation gas solution phases. Scattering studies permit the determination of an apparent fractal dimension, but both three dimensions frequently have near 2, so it not possible on basis this geometrical property. A survey anisotropy a wide variety polymeric structures (linear ring random self-avoiding walks, percolation clusters, lattice...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKnots in Hamilton CyclesMarc L. MansfieldCite this: Macromolecules 1994, 27, 20, 5924–5926Publication Date (Print):September 1, 1994Publication History Published online1 May 2002Published inissue 1 September 1994https://pubs.acs.org/doi/10.1021/ma00098a057https://doi.org/10.1021/ma00098a057research-articleACS PublicationsRequest reuse permissionsArticle Views202Altmetric-Citations58LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant...
The authors apply the Frenkel-Kontorova model to case of surfaces where natural bond-length within surface layer is different from substrate bond-length. A reconstruction may occur in which density atoms either less than or greater bulk density. stability unreconstructed controlled by ratio two parameters have simple physical interpretations. They discuss real metallic terms values these parameters, with particular reference (111) gold, platinum, iridium and aluminium.
By identifying the maximally random jammed state of freely jointed chains tangent hard spheres we are able to determine distinct scaling regimes characterizing dependence chain dimensions and topology on volume fraction. Calculated distributions (i) contour length primitive paths (ii) number entanglements per agree remarkably well with recent theoretical predictions in all regimes. Furthermore, our simulations reveal a hitherto unsuspected connection between purely intramolecular (knots)...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMonte Carlo study of chain folding in melt-crystallized polymersMarc L. MansfieldCite this: Macromolecules 1983, 16, 6, 914–920Publication Date (Print):June 1, 1983Publication History Published online1 May 2002Published inissue 1 June 1983https://pubs.acs.org/doi/10.1021/ma00240a017https://doi.org/10.1021/ma00240a017research-articleACS PublicationsRequest reuse permissionsArticle Views148Altmetric-Citations50LEARN ABOUT THESE METRICSArticle Views...
In previous work, we have established that the intrinsic viscosity $[\ensuremath{\eta}]$ of an object is nearly proportional to average electrical polarizability tensor $⟨{\mathbf{\ensuremath{\alpha}}}_{\mathbit{e}}⟩=\mathrm{tr}({\mathbf{\ensuremath{\alpha}}}_{\mathbit{e}})∕3$ a conducting having same shape, or equivalently, conductivity $[\ensuremath{\sigma}]=⟨{\mathbf{\ensuremath{\alpha}}}_{\mathbit{e}}⟩∕V$, which characterizes dilute mixture randomly oriented objects ($V$ being volume...