Ranko Richert
Ranko Richert received his Ph.D. degree from the University of Marburg, Germany, in 1985, and the Habilitation degree in physical chemistry in 1991. He worked as a Postdoctoral Fellow at Tel Aviv University, Israel, in 1993, and as a Senior Research Associate at the Max Planck Institute for Polymer Research in Mainz, Germany, from 1993 to 1999. In 1994, he was a Lecturer at the Department of Physical Chemistry at the University of Mainz before joining the Arizona State University Faculty in 1999. He is currently an Associate Professor of chemistry and biochemistry at Arizona State University. The experimental research in this group adresses the physical chemistry of soft condensed matter by optical spectroscopy (triplet state solvation dynamics) and by linear and nonlinear dielectric relaxation experiments. This research is aimed at understanding the relaxation and transport phenomena in disordered materials and how they relate to the structure, length scale, dynamics, and interactions. The research topics cover the phenomena associated with glass transitions, interfacial effects, geometric confinement, relaxation and retardation processes, details of the molecular dynamics, spatial heterogeneities, nanoscopic heatflow, and the relation between macroscopic and microscopic properties.
Biography Updated on 16 March 2008
Personal Home Page
http://www.public.asu.edu/~ranko
Articles in Scholarly Journals [Incomplete List]
- Solvation Dynamics and Electric Field Relaxation in an Imidazolium-PF6 Ionic Liquid: from Room Temperature to the Glass Transition
Journal of Physical Chemistry B, vol. 111, no. 18, pp. 5016–5022, 2007 - Glass Transition Dynamics and Boiling Temperatures of Molecular Liquids and Their Isomers
Journal of Physical Chemistry B, vol. 111, no. 12, pp. 3201–3207, 2007 - Comparing calorimetric and dielectric polarization modes in viscous 2-ethyl-1-hexanol
The Journal of Chemical Physics, vol. 126, no. 10, p. 104503, 2007 - Wide frequency range capacitive detection of loss in a metallic cantilever using resonance and relaxation modes
Review of Scientific Instruments, vol. 78, no. 5, p. 053901, 2007 - Nonlinear features in the dielectric behavior of propylene glycol
Physical Review B, vol. 75, no. 6, 2007 - Enhanced diffusivity in supercooled liquids
New Journal of Physics, vol. 9, no. 2, pp. 36–36, 2007 - Measuring the Configurational Heat Capacity of Liquids
Physical Review Letters, vol. 99, no. 18, 2007 - Probing heterogeneous thermal relaxation by nonlinear dielectric spectroscopy
Journal of Physics: Condensed Matter, vol. 19, no. 20, p. 205128, 2007 - Primary and secondary relaxation time dispersions in fragile supercooled liquids
Physical Review B, vol. 76, no. 6, 2007 - Nonlinear Dielectric Response and Thermodynamic Heterogeneity in Liquids
Physical Review Letters, vol. 97, no. 9, 2006 - Solvation dynamics in viscous polymer solution: Propylene carbonate confined by poly(methylmethacrylate)
Physical Review B, vol. 74, no. 1, 2006 - Fragility and thermodynamics in nonpolymeric glass-forming liquids
The Journal of Chemical Physics, vol. 125, no. 7, p. 074505, 2006 - Enhanced translational diffusion of rubrene in sucrose benzoate
The Journal of Chemical Physics, vol. 124, no. 1, p. 014510, 2006 - Dynamics of glass-forming liquids. XI. Fluctuating environments by dielectric spectroscopy
The Journal of Chemical Physics, vol. 124, no. 16, p. 164510, 2006 - Response to “Comment on ‘On the dielectric susceptibility spectra of supercooled o-terphenyl’” [J. Chem. Phys. 123, 154502 (2005)]
The Journal of Chemical Physics, vol. 124, no. 18, p. 187102, 2006 - Solvent response and dielectric relaxation in supercooled butyronitrile
The Journal of Chemical Physics, vol. 125, no. 2, p. 024504, 2006 - Relaxational features of supercooled and glassy m-toluidine
Journal of Non-Crystalline Solids, vol. 352, no. 42-49, pp. 4729–4734, 2006 - From heterogeneous probe rotation to the hydrodynamic limit
Journal of Non-Crystalline Solids, vol. 352, no. 42-49, pp. 4704–4709, 2006 - The Journal of Physical Chemistry B, vol. 110, no. 9, pp. 4371–4377, 2006
- The Journal of Physical Chemistry B, vol. 109, no. 49, pp. 23255–23262, 2005
- The Journal of Physical Chemistry B, vol. 109, no. 18, pp. 8767–8773, 2005
- Dielectric responses in disordered systems: From molecules to materials
Journal of Non-Crystalline Solids, vol. 351, no. 33-36, pp. 2716–2722, 2005 - Dynamics of glass-forming liquids. X. Dielectric relaxation of 3-bromopentane as molecular probes in 3-methylpentane
The Journal of Chemical Physics, vol. 123, no. 16, p. 164504, 2005 - The Journal of Physical Chemistry B, vol. 109, no. 22, pp. 11091–11094, 2005
- Identification of dielectric and structural relaxations in glass-forming secondary amides
The Journal of Chemical Physics, vol. 123, no. 5, p. 054516, 2005 - Heterogeneous thermal excitation and relaxation in supercooled liquids
The Journal of Chemical Physics, vol. 123, no. 22, p. 224506, 2005 - Triplet excitation transfer in glassy systems: Spatial and spectral diffusion
The Journal of Chemical Physics, vol. 122, no. 23, p. 234508, 2005 - Effect of dispersion on the relaxation-retardation time scale ratio
The Journal of Chemical Physics, vol. 123, no. 10, p. 106101, 2005 - Dynamics of glassy and liquid m-toluidine investigated by high-resolution dielectric spectroscopy
The Journal of Chemical Physics, vol. 122, no. 8, p. 084508, 2005 - Dynamics of supercooled liquids in the vicinity of soft and hard interfaces
Physical Review B, vol. 71, no. 14, 2005 - On the dielectric susceptibility spectra of supercooled o-terphenyl
The Journal of Chemical Physics, vol. 123, no. 15, p. 154502, 2005 - Dielectric Studies Deny Existence of Ultraviscous Fragile Water
Physical Review Letters, vol. 93, no. 21, 2004 - Intramicellar Glass Transition and Liquid Dynamics in Soft Confinement
Physical Review Letters, vol. 92, no. 9, 2004 - Dynamics of glass-forming liquids. IX. Structural versus dielectric relaxation in monohydroxy alcohols
The Journal of Chemical Physics, vol. 121, no. 22, p. 11170, 2004 - The Journal of Physical Chemistry B, vol. 108, no. 29, pp. 10451–10456, 2004
- The Journal of Physical Chemistry B, vol. 108, no. 51, pp. 19825–19830, 2004
- Exponential probe rotation in glass-forming liquids
The Journal of Chemical Physics, vol. 120, no. 23, p. 11082, 2004 - Dynamics of glass-forming liquids. VIII. Dielectric signature of probe rotation and bulk dynamics in branched alkanes
The Journal of Chemical Physics, vol. 121, no. 18, p. 8960, 2004 - Dielectric hole burning in the high frequency wing of supercooled glycerol
The Journal of Chemical Physics, vol. 118, no. 3, p. 1356, 2003 - Dynamics of glass-forming liquids. VII. Dielectric relaxation of supercooled tris-naphthylbenzene, squalane, and decahydroisoquinoline
The Journal of Chemical Physics, vol. 118, no. 4, p. 1828, 2003 - The Journal of Physical Chemistry B, vol. 107, no. 4, pp. 895–898, 2003
- Dielectric hole burning in an electrical circuit analog of a dynamically heterogeneous system
Physica A: Statistical Mechanics and its Applications, vol. 322, pp. 143–154, 2003 - Dielectric hole burning: Signature of dielectric and thermal relaxation time heterogeneity
The Journal of Chemical Physics, vol. 119, no. 12, p. 6150, 2003 - Solvation dynamics of molecular glass-forming liquids in confinement
Journal of Physics: Condensed Matter, vol. 15, no. 11, pp. S1041–S1050, 2003 - Solvation dynamics in the plastic crystal and supercooled liquid state of ethanol
Journal of Physics: Condensed Matter, vol. 15, no. 32, pp. 5429–5438, 2003 - Heterogeneous dynamics in liquids: fluctuations in space and time
Journal of Physics: Condensed Matter, vol. 14, no. 23, pp. R703–R738, 2002 - Dynamics of glass-forming liquids. VI. Dielectric relaxation study of neat decahydro-naphthalene
The Journal of Chemical Physics, vol. 117, no. 9, p. 4414, 2002 - Solvation dynamics and probe rotation in glass-forming liquids
Chemical Physics, vol. 284, no. 1-2, pp. 103–114, 2002 - Heterogeneous solvent dynamics and time-resolved optical linewidths
Journal of Non-Crystalline Solids, vol. 307-310, pp. 50–56, 2002 - Observation of heterogeneity in the nanosecond dynamics of a liquid
The Journal of Chemical Physics, vol. 115, no. 6, p. 2676, 2001 - Theory of time dependent optical linewidths in supercooled liquids
The Journal of Chemical Physics, vol. 114, no. 17, p. 7471, 2001 - Spectral diffusion in liquids with fluctuating solvent responses: Dynamical heterogeneity and rate exchange
The Journal of Chemical Physics, vol. 115, no. 3, p. 1429, 2001 - Spectral selectivity in the slow β-relaxation of a molecular glass
Europhysics Letters (EPL), vol. 54, no. 6, pp. 767–773, 2001 - Heterogeneous relaxation patterns in supercooled liquids studied by solvation dynamics
Physical Review E, vol. 61, no. 2, pp. 1722–1728, 2000 - Capacitive scanning dilatometry and frequency-dependent thermal expansion of polymer films
Physical Review E, vol. 61, no. 2, pp. 1755–1764, 2000 - Triplet state solvation dynamics: Basics and applications
The Journal of Chemical Physics, vol. 113, no. 19, p. 8404, 2000 - Scaling vs. Vogel–Fulcher-type structural relaxation in deeply supercooled materials
Physica A: Statistical Mechanics and its Applications, vol. 287, no. 1-2, pp. 26–36, 2000 - Dynamic thermal expansivity near the glass transition
Journal of Non-Crystalline Solids, vol. 262, no. 1-3, pp. 276–281, 2000 - Macromolecules, vol. 32, no. 25, pp. 8551–8559, 1999
- Heterogeneous and Homogeneous Diffusivity in an Ion-Conducting Glass
Physical Review Letters, vol. 83, no. 21, pp. 4337–4340, 1999 - Measurement and analysis of time-domain electric field relaxation: The vitreous ionic conductor 0.4?Ca(NO[sub 3])[sub 2]–0.6?KNO[sub 3]
Journal of Applied Physics, vol. 85, no. 3, p. 1750, 1999 - The Journal of Physical Chemistry A, vol. 102, no. 29, pp. 5775–5781, 1998
- Dynamics of glass-forming liquids. IV. True activated behavior above 2 GHz in the dielectric a-relaxation of organic liquids
The Journal of Chemical Physics, vol. 108, no. 15, p. 6408, 1998 - Spatial uniformity of the ß-relaxation in ?-sorbitol
Journal of Non-Crystalline Solids, vol. 242, no. 1, pp. 19–24, 1998 - Dynamics of glass-forming liquids. V. On the link between molecular dynamics and configurational entropy
The Journal of Chemical Physics, vol. 108, no. 21, p. 9016, 1998 - The dielectric modulus: relaxation versus retardation
Solid State Ionics, vol. 105, no. 1-4, pp. 167–173, 1998 - Nature of the non-exponential primary relaxation in structural glass-formers probed by dynamically selective experiments
Journal of Non-Crystalline Solids, vol. 235-237, pp. 1–9, 1998 - Molecular dynamics analyzed in terms of continuous measures of dynamic heterogeneity
Journal of Non-Crystalline Solids, vol. 235-237, pp. 41–47, 1998 - Dynamic heterogeneity, spatially distributed stretched-exponential patterns, and transient dispersions in solvation dynamics
Physical Review E, vol. 58, no. 1, pp. 779–784, 1998 - Journal of Physics: Condensed Matter, vol. 9, no. 44, pp. 9661–9671, 1997
- Dielectric relaxation of the electric field in poly(vinyl acetate): a time domain study in the range 10-3–106 s
Polymer, vol. 38, no. 2, pp. 255–261, 1997 - Dielectric loss spectra of organic glass formers and Chamberlin cluster model
Journal of Non-Crystalline Solids, vol. 215, no. 2-3, pp. 293–300, 1997 - Thermally stimulated modulus relaxation in polymers: method and interpretation
Polymer, vol. 38, no. 23, pp. 5801–5806, 1997 - The Journal of Physical Chemistry B, vol. 101, no. 33, pp. 6323–6326, 1997
- Macromolecules, vol. 30, no. 14, pp. 4038–4041, 1997
- Dynamics of glass-forming liquids. III. Comparing the dielectric a- and ß-relaxation of 1-propanol and o-terphenyl
The Journal of Chemical Physics, vol. 107, no. 4, p. 1086, 1997 - A simple current-to-voltage interface for dielectric relaxation measurements in the range 10-3 to 107 Hz
Review of Scientific Instruments, vol. 67, no. 9, p. 3217, 1996 - Geometrical confinement and cooperativity in supercooled liquids studied by solvation dynamics
Physical Review B, vol. 54, no. 22, pp. 15762–15766, 1996 - Donor/acceptor-substituted phenylenevinylenes
Advanced Materials, vol. 8, no. 11, pp. 932–935, 1996 - Macromolecules, vol. 29, no. 4, pp. 1266–1268, 1996
- Journal of Physics: Condensed Matter, vol. 8, no. 34, pp. 6185–6190, 1996
- Dynamics of solvation in supercooled liquids confined to the pores of sol-gel glasses
Physical Review B, vol. 53, no. 9, pp. 5341–5347, 1996 - Macromolecules, vol. 28, no. 7, pp. 2429–2438, 1995
- Journal of Physical Chemistry, vol. 99, no. 47, pp. 17265–17268, 1995
- Journal of Physical Chemistry, vol. 99, no. 27, pp. 10948–10951, 1995
- Transient polarization four-photon “non-Condon” spectroscopy of electronic transitions in complex molecules
Journal of Luminescence, vol. 60-61, pp. 709–712, 1994 - Homogeneous dispersion of dielectric responses in a simple glass
Journal of Non-Crystalline Solids, vol. 172-174, pp. 209–213, 1994 - Macromolecules, vol. 27, no. 15, pp. 4318–4326, 1994
- Journal of Physical Chemistry, vol. 97, no. 13, pp. 3146–3150, 1993
- Progress towards processible materials for light-emitting devices using poly(p-phenylphenylenevinylene)
Advanced Materials, vol. 4, no. 10, pp. 661–662, 1992 - Poole-Frenkel behavior of charge transport in organic solids with off-diagonal disorder studied by Monte Carlo simulation
Synthetic Metals, vol. 37, no. 1-3, pp. 271–281, 1990 - Frustrated energy relaxation in an organic glass
Philosophical Magazine Letters, vol. 59, no. 2, pp. 95–102, 1989 - Hopping in a Gaussian distribution of energy states: Transition from dispersive to non-dispersive transport
Philosophical Magazine Letters, vol. 59, no. 6, pp. 325–331, 1989