
Joshua Socolar, Professor of Physics
Prof. Socolar is interested in collective behavior in condensed matter and dynamical systems. His current research interests include:
 Limitperiodic structures, quasicrystals, packing problems, and tiling theory;
 Selfassembly and phases of designed colloidal particles;
 Shear jamming and stickslip behavior in dry granular materials;
 Organization and dynamics of complex networks;
 Topological elasticity of mechanical lattices.
 Contact Info:
 Education:
Ph.D.  University of Pennsylvania  1987 
B.A.  Haverford College  1980 
 Specialties:

Nonlinear dynamics and complex systems
Theoretical condensed matter physics Biological physics
 Research Interests: Theoretical Condensed Matter Physics
Prof. Socolar is interested in the principles that determine
collective behavior in condensed matter and dynamical systems.
His current research interests include:
 Organization and function of complex dynamical networks, especially genetic regulatory networks;.
 The spatial distribution of stresses granular materials (e.g.
bins of sand, coal, pills, or grain) and jamming phenomena;
 Controlling chaos, or understanding feedback mechanisms that can stabilize otherwise unstable ordered behavior in chaotic dynamical systems;
 Quasicrystals, packing problems, and tiling theory.
 Areas of Interest:
Theoretical condensed matter physics Nonlinear dynamics and control theory Statistical mechanics in nonequilibrium systems Complex Boolean networks Genetic regulatory networks Aperiodic Tilings
 Keywords:
Algorithms • Animals • Arrhythmias, Cardiac • Biological Clocks • Biological Evolution • Biophysics • Bone and Bones • Boolean networks • Cell Cycle • Cell Differentiation • Cell Physiological Phenomena • Cell Proliferation • Computational Biology • Computer Graphics • Computer Simulation • Condensed matter • Control theory • CyclinDependent Kinases • Cyclins • Data Interpretation, Statistical • Diffusion • Disease Outbreaks • Electrophysiology • Embryo, Nonmammalian • Embryonic Development • Feedback • Feedback, Physiological • G1 Phase • Gastrula • Gene Expression • Gene Expression Regulation • Gene Expression Regulation, Developmental • Gene Expression Regulation, Fungal • Gene Regulatory Networks • Genetic regulatory networks • Granular materials • Growth • Heart • Humans • Logistic Models • Mathematical Computing • Mathematical Concepts • Membrane Potentials • Mesoderm • Models, Biological • Models, Cardiovascular • Models, Chemical • Models, Genetic • Models, Statistical • Models, Theoretical • Mutation • Myocardium • Neural Networks (Computer) • Nonlinear dynamics • Nonlinear Dynamics • Nuclear Reprogramming • Periodicity • Physical Phenomena • Physics • Plant Development • Politics • Population Dynamics • Probability • Proteome • Public Opinion • S Phase • Saccharomyces cerevisiae • Sensitivity and Specificity • Signal Processing, ComputerAssisted • Signal Transduction • Social Support • Statistics as Topic • Systems Theory • Tiling theory • Time Factors • Transcription Factors • Transcription, Genetic • Variations • Ventricular Fibrillation • Yeasts
 Current Ph.D. Students
(Former Students)
 Postdocs Mentored
 Xianrui Cheng (September 01, 2012  March 01, 2013)
 Volkan Sevim (March, 2008  August, 2010)
 Bjorn Samuelsson (November, 2005  August 31, 2007)
 Recent Publications
(More Publications)
 Kozlowski, R; Zheng, H; Daniels, KE; Socolar, JES, StickSlip Dynamics in a Granular Material With Varying Grain Angularity,
Frontiers in Physics, vol. 10
(July, 2022) [doi] [abs]
 Zhao, Y; Wang, D; Zheng, H; Chakraborty, B; Socolar, JES, Ultrastable ShearJammed Granular Material,
Physical Review X, vol. 12 no. 3
(July, 2022), American Physical Society (APS) [doi] [abs]
 Pugnaloni, LA; Carlevaro, CM; Kozlowski, R; Zheng, H; Kondic, L; Socolar, JES, Universal features of the stickslip dynamics of an intruder moving through a confined granular medium.,
Physical Review. E, vol. 105 no. 4
(April, 2022),
pp. L042902 [doi] [abs]
 Kluge, L; Socolar, JES; SchÃ¶ll, E, Random logic networks: From classical Boolean to quantum dynamics.,
Physical Review. E, vol. 104 no. 61
(December, 2021),
pp. 064308 [2108.10813], [doi] [abs] [author's comments]
[reputed journal]
 Kozlowski, R; Zheng, H; Daniels, KE; Socolar, JES, Stress propagation in locally loaded packings of disks and pentagons.,
Soft Matter, vol. 17 no. 44
(November, 2021),
pp. 1012010127 [doi] [abs]
[reputed journal]
 Selected Invited Lectures
 Autonomous Boolean modeling of gene regulatory networks, May 07, 2012, Mathematical Biosciences Institute, Ohio State U.
 Hierarchical freezing in a limitperiodic structure, October 15, 2011, Princeton Center for Theoretical Science
 Periodicity and chaos in delayed Boolean networks, July 19, 2011, ICIAM Conference, Vancouver, Canada
 Relaxation to a limitperiodic ground state, May 23, 2011, Haverford College, Haverford, PA
 Autonomous Boolean Models, June 28, 2009, Mount Holyoke College, South Hadley, MA
For more information, see
Prof. Socolar's Home Page.
