Clark University Digital Commons I Faculty Works I Physics | Faculty Works by Department and/or School | Clark University

Physics

 

Our faculty collaborate with colleagues across the world and conduct experimental and theoretical research funded by sources including the National Science Foundation, the Department of Energy, and the Petroleum Research Fund.

Recent research awards include:
  • Professor Charles Agosta: National Science Foundation grant titled “Inhomogeneity and Charge Modulation in Unconventional Superconductors” Professor Michael Boyer: National Science Foundation grant titled “The Nanoscale Effects of Intrinsic and Externally-Applied Strain on Charge Density Wave States”
  • Professor Arshad Kudrolli: National Science Foundation grant titled “Intruder dynamics in fluid saturated granular medium”
  • Professor Alexander Petroff: American Chemical Society Petroleum Research Fund (ACS-PRF) grant titled “Experimental Investigations of Oxygen Dynamics in Natural Sediment”

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Submissions from 2012

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Experimental and semiempirical method to determine the Pauli-limiting field in quasi-two-dimensional superconductors as applied to κ-(BEDT-TTF) 2Cu(NCS) 2: Strong evidence of a FFLO state, C. C. Agosta, Jing Jin, W. A. Coniglio, B. E. Smith, K. Cho, I. Stroe, C. Martin, S. W. Tozer, T. P. Murphy, E. C. Palm, J. A. Schlueter, and M. Kurmoo

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Shape and dynamics of seepage erosion in a horizontal granular bed, Michael Berhanu, Alexander Petroff, Olivier Devauchelle, Arshad Kudrolli, and Daniel H. Rothman

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Flow-induced channelization in a porous medium, A. Mahadevan, A. V. Orpe, A. Kudrolli, and L. Mahadevan

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Nucleation and crystal growth in sheared granular sphere packings, Andreea Panaitescu, K. Anki Reddy, and Arshad Kudrolli

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Four remarks on the growth of channel networks, Alexander P. Petroff, Olivier Devauchelle, Arshad Kudrolli, and Daniel H. Rothman

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Diffusion of granular rods on a rough vibrated substrate, V. Yadava and A. Kudrolli

Submissions from 2011

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Anisotropic upper critical field and possible Fulde-Ferrel-Larkin- Ovchinnikov state in the stoichiometric pnictide superconductor LiFeAs, K. Cho, H. Kim, M. A. Tanatar, Y. J. Song, Y. S. Kwon, W. A. Coniglio, C. C. Agosta, A. Gurevich, and R. Prozorov

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Building designed granular towers one drop at a time, Julien Chopin and Arshad Kudrolli

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Superconducting phase diagram and FFLO signature in λ-(BETS) 2GaCl4 from rf penetration depth measurements, William A. Coniglio, Laurel E. Winter, Kyuil Cho, C. C. Agosta, B. Fravel, and L. K. Montgomery

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Aggregation of frictional particles due to capillary attraction, Marie Julie Dalbe, Darija Cosic, Michael Berhanu, and Arshad Kudrolli

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Mechanics of membrane bulging during cell-wall disruption in Gram-negative bacteria, Kristopher E. Daly, Kerwyn Casey Huang, Ned S. Wingreen, and Ranjan Mukhopadhyay

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Protein-coat dynamics and cluster phases in intracellular trafficking, Greg Huber, Hui Wang, and Ranjan Mukhopadhyay

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Geometry of valley growth, A. P. Petroff, O. Devauchelle, D. M. Abrams, A. E. Lobkovsky, A. Kudrolli, and D. H. Rothman

Submissions from 2010

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Maximum and minimum stable random packings of Platonic solids, Jessica Baker and Arshad Kudrolli

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Heterogeneous structure of granular aggregates with capillary interactions, Michael Berhanu and Arshad Kudrolli

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Bulk two-dimensional Pauli-limited superconductor, T. Coffey, C. Martin, C. C. Agosta, T. Kinoshota, and M. Tokumoto

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Concentration dependent diffusion of self-propelled rods, Arshad Kudrolli

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Shear induced diffusion in dense granular flows, Ashish V. Orpe, Chris H. Rycroft, and Arshad A. Kudrolli

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Experimental investigation of cyclically sheared granular particles with direct particle tracking, Andreea Panaitescu and Arshad Kudrolli

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Spatial distribution functions of random packed granular spheres obtained by direct particle imaging, Andreea Panaitescu and Arshad Kudrolli

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Tumbling dynamics of passive flexible wings, Daniel Tam, John W.M. Bush, Michael Robitaille, and Arshad Kudrolli

Submissions from 2009

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Upper critical field in the organic superconductor β″ - (H2 CF2 SO3: Possibility of Fulde-Ferrell-Larkin-Ovchinnikov state, K. Cho, B. E. Smith, W. A. Coniglio, L. E. Winter, C. C. Agosta, and J. A. Schlueter

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Red Blood Cell Shapes and Shape Transformations: Newtonian Mechanics of a Composite Membrane, Gerald Lim H. W., Michael Wortis, and Ranjan Mukhopadhyay

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Curvature and shape determination of growing bacteria, Ranjan Mukhopadhyay and Ned S. Wingreen

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Physical test of a particle simulation model in a sheared granular system, Chris H. Rycroft, Ashish V. Orpe, and Arshad Kudrolli

Submissions from 2008

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Cell shape and cell-wall organization in Gram-negative bacteria, Kerwyn Casey Huang, Ranjan Mukhopadhyay, Bingni Wen, Zemer Gitai, and Ned S. Wingreen

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Exponential sensitivity of noise-driven switching in genetic networks, Pankaj Mehta, Ranjan Mukhopadhyay, and Ned S. Wingreen

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Lipid localization in bacterial cells through curvature-mediated microphase separation, Ranjan Mukhopadhyay, Kerwyn Casey Huang, and Ned S. Wingreen

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Self-organized periodicity of protein clusters in growing bacteria, Hui Wang, Ned S. Wingreen, and Ranjan Mukhopadhyay

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Particle-hole symmetry and the dirty boson problem, Peter B. Weichman and Ranjan Mukhopadhyay

Submissions from 2007

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Critical dynamics of the dirty boson problem: Revisiting the equality z=d, Peter B. Weichman and Ranjan Mukhopadhyay

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Semisoft nematic elastomers and nematics in crossed electric and magnetic fields, Fangfu Ye, Ranjan Mukhopadhyay, Olaf Stenull, and T. C. Lubensky

Submissions from 2006

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Penetration depth studies of organic and heavy fermion superconductors in the Pauli paramagnetic limit, C. C. Agosta, C. Martin, H. A. Radovan, E. C. Palm, T. P. Murphy, S. W. Tozer, J. C. Cooley, J. A. Schlueter, and C. Petrovic

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A curvature-mediated mechanism for localization of lipids to bacterial poles, Kerwyn Casey Huang, Ranjan Mukhopadhyay, and Ned S. Wingreen

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New results for superconductivity in κ-(BEDT-TTF) 2 Cu(NCS) 2 when an applied magnetic field is aligned parallel to the conducting planes, C. Martin, K. Cho, I. Mihut, T. Coffey, C. C. Agosta, S. W. Tozer, H. A. Radovan, E. C. Palm, T. P. Murphy, and J. A. Schlueter

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Incoherent Bragg reflection and Fermi-surface hot spots in a quasi-two-dimensional metal, I. Mihut, C. C. Agosta, C. Martin, C. H. Mielke, T. Coffey, M. Tokumoto, M. Kurmoo, J. A. Schlueter, P. Goddard, and N. Harrison

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Abrikosov-to-Josephson vortex lattice crossover in heavy fermion CeCoIn5, H. A. Radovan, T. P. Murphy, E. C. Palm, S. W. Tozer, J. C. Cooley, I. Mihut, and C. C. Agosta

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Fulde-Ferrell-Larkin-Ovchinnikov superconductivity in heavy fermion CeCoIn5, H. A. Radovan, S. W. Tozer, T. P. Murphy, E. C. Palm, N. A. Fortune, S. T. Hannahs, C. C. Agosta, C. Martin, J. L. Sarrao, and J. C. Cooley

Submissions from 2005

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Geometry of crumpled paper, Daniel L. Blair and Arshad Kudrolli

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Magnetized Granular Materials, Daniel L. Blair and Arshad Kudrolli

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Critical field and Shubnikov-de Haas oscillations of κ-(BEDT-TTF)2Cu(NCS)2 under pressure, C. Martin, C. C. Agosta, S. W. Tozer, H. A. Radovan, T. Kinoshota, and M. Tokumoto

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Evidence for the Fulde-Ferrell-Larkin-Ovchinnikov state in CeCoIn 5 from penetration depth measurements, C. Martin, C. C. Agosta, S. W. Tozer, H. A. Radovan, E. C. Palm, T. P. Murphy, and J. L. Sarrao

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Optimal path to epigenetic switching, David Marin Roma, Ruadhan A. O'Flanagan, Andrei E. Ruckenstein, Anirvan M. Sengupta, and Ranjan Mukhopadhyay

Submissions from 2004

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Anisotropy-driven dynamics in vibrated granular rods, Dmitri Volfson, Arshad Kudrolli, and Lev S. Tsimring

Submissions from 2003

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Clustering transitions in vibrofluidized magnetized granular materials, Daniel L. Blair and A. Kudrolli

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Collision statistics of driven granular materials, Daniel L. Blair and A. Kudrolli

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Vortices in vibrated granular rods, Daniel L. Blair, T. Neicu, and A. Kudrolli

Submissions from 2002

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Resistivity and penetration depth measurements of organic superconductors in high magnetic fields using a tunnel diode oscillator, C. C. Agosta, T. Coffey, Z. Bayindir, I. Mihut, C. Martin, and M. Tokumoto

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The study of the magnetic breakdown effect as a function of angle in the organic conductor K-(BEDT-TTF)2Cu(NCS)2 in high magnetic fields, I. Mihut, C. C. Agosta, C. H. Mielke, and M. Tokomoto

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Clustering, jamming and segregation in cohesive granular materials, Azadeh Samadani, Daniel L. Blair, and A. Kudrolli

Submissions from 2001

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Radio frequency measurements of the superconducting transition in κ-(ET)2Cu(NCS)2 using a tunnel diode oscillator in pulsed magnetic fields, Z. Bayindir, C. Martin, I. Minut, L. DeViveiros, T. Coffey, C. C. Agosta, and M. Tokumoto

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Velocity correlations in dense granular gases, Daniel L. Blair and A. Kudrolli

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Swarming ring patterns in bacterial colonies exposed to ultraviolet radiation, Anna M. Delprato, Azadeh Samadani, A. Kudrolli, and L. S. Tsimring

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Superconducting properties and fermi-surface topology of the quasi-two-dimensional organic superconductor λ-(BETS)2GaCl4 (BETS ≡ bis(ethylene-dithio)tetraselenafulvalene), Charles Mielke, John Singleton, Moon Sun Nam, Neil Harrison, C. C. Agosta, B. Fravel, and L. K. Montgomery

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Spectral properties of a mixed system using an acoustical resonator, T. Neicu, K. Schaadt, and A. Kudrolli

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Angle of repose and segregation in cohesive granular matter, Azadeh Samadani and A. Kudrolli

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First-row transition metal complexes of 3-phenyl-4-hydroxycyclobut-3-ene-1,2-dione (phenylsquarate), Avril Williams, Bert D. Alleyne, Hazel Ann Hosein, Hema Jaggernauth, Lincoln A. Hall, Bruce M. Foxman, Laurence K. Thompson, and Charles Agosta

Submissions from 2000

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Measuring radio frequency properties of materials in pulsed magnetic fields with a tunnel diode oscillator, T. Coffey, Z. Bayindir, J. F. DeCarolis, M. Bennett, G. Esper, and C. C. Agosta

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Segregation transitions in wet granular matter, Azadeh Samadani and A. Kudrolli

Submissions from 1999

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Anomalous superconducting phase diagram of (BEDO-TTF)2ReO4·H2O, C. C. Agosta, S. Ivanov, Z. Bayindir, T. Coffey, N. D. Kushch, E. B. Yagubskii, T. Burgin, and L. K. Montgomery

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Size segregation of granular matter in silo discharges, Azadeh Samadani, A. Pradhan, and A. Kudrolli

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Experimental investigation of universal parametric correlators using a vibrating plate, K. Schaadt and A. Kudrolli

Submissions from 1997

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Studies of the organic superconductor (BEDO)2ReO4H2O at high pressures and high magnetic fields, S. Ivanov, T. Coffey, C. C. Agosta, S. T. Hannahs, C. Immer, N. D. Kushch, and E. B. Yagubskii

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Electronic-transport studies of the organic metals α-(BET Hg(SCsand α-(BET KHg(SCsin high magnetic fields, where BETS is bis(ethylenedithio)tetraselenafulvalene, S. Ivanov, C. Mielke, T. Coffey, D. Howe, C. Agosta, B. Fravel, and L. Montgomery

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Synthesis and preliminary characterization of new conducting salts derived from bis(ethylenedithio)tetraselenafulvalene (BETS), L. K. Montgomery, B. W. Fravel, J. C. Huffman, C. C. Agosta, and S. A. Ivanov

Submissions from 1996

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Experimental techniques for pulsed magnetic fields, Fritz Herlach, Charles C. Agosta, Ria Bogaerts, Willy Boon, Igne Deckers, Alain De Keyser, Neil Harrison, Alexander Lagutin, Liang Li, Lieven Trappeniers, Johan Vanacken, Luc Van Bockstal, and Ann Van Esch

Submissions from 1995

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Pressure effects on the electronic structure and low-temperature states in the -(BEDT-TTF)2MHg(SCN)4 organic-conductor family (M=K, Rb, Tl, NH4), J. S. Brooks, X. Chen, S. J. Klepper, S. Valfells, G. J. Athas, Y. Tanaka, T. Kinoshita, N. Kinoshita, M. Tokumoto, H. Anzai, and C. C. Agosta

Submissions from 1994

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New structure in the angular and field dependencies of the magnetoresistance of (BEDT-TTF)2TlHg(SCN)4, C. C. Agosta, S. A. Ivanov, C. H. Mielke, D. A. Howe, M. A. Antia, F. M. Morgan, V. N. Laukhin, and N. D. Kushch

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Magnetoresistance and SdH Oscillation of α-(BEDT-TTF)2RbHg(SCN)4 at low temperatures and high pressures, X. Chen, S. J. Klepper, J. S. Brooks, I. Bradaric, M. Tokumoto, N. Kinoshita, Y. Tanaka, and C. C. Agosta

Submissions from 1993

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Magneto-oscillatory behavior and magnetism in quasi-two-dimensional organic conductors, J. S. Brooks, S. J. Klepper, C. C. Agosta, M. Tokumoto, N. Kinoshita, Y. Tanaka, S. Uji, H. Aoki, G. J. Athas, X. Chen, and H. Anzai

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Fermi surface and magnetic properties of low-dimensional organic conductors, J. S. Brooks, S. J. Klepper, C. C. Agosta, M. Tokumoto, N. Kinoshita, Y. Tanaka, S. Uji, H. Aoki, A. S. Perel, G. J. Athas, X. Chen, D. A. Howe, and H. Anzai

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Pressure-induced nesting in the low-dimensional organic superconductor α-(BEDT-TTF)2NH4Hg(SCN)4, S. J. Klepper, J. S. Brooks, X. Chen, I. Bradaric, M. Tokumoto, N. Kinoshita, Y. Tanaka, and C. C. Agosta

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Magnetic quantum oscillations in low-dimensional organic conductors (BEDT-TTF)2X, M. Tokumoto, A. G. Swanson, J. S. Brooks, C. C. Agosta, S. T. Hannahs, N. Kinoshita, H. Anzai, M. Tamura, H. Tajima, H. Kuroda, A. Ugawa, and K. Yakushi

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Magnetic breakdown in the organic conductor (BEDT-TTF)2KHg(SCN)4, S. Uji, H. Aoki, J. S. Brooks, A. S. Perel, G. J. Athas, S. J. Klepper, C. C. Agosta, D. A. Howe, M. Tokumoto, N. Kinoshita, Y. Tanaka, and H. Anzai