Search Results - "Hoy, Robert"

Jamming of Semiflexible Polymers by Hoy, Robert S

“…We study jamming in model freely rotating polymers as a function of chain length N and bond angle θ_{0}. The volume fraction at jamming ϕ_{J}(θ_{0}) is minimal…”
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Unified Analytic Expressions for the Entanglement Length, Tube Diameter, and Plateau Modulus of Polymer Melts by Hoy, Robert S, Kröger, Martin

“…By combining molecular dynamics simulations and topological analyses with scaling arguments, we obtain analytic expressions that quantitatively predict the…”
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Erratum: Ultraslow Settling Kinetics of Frictional Cohesive Powders [Phys. Rev. Lett. 130, 166102 (2023)] by Nan, Kai, Hoy, Robert S

“…This corrects the article DOI: 10.1103/PhysRevLett.130.166102…”
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Ultraslow Settling Kinetics of Frictional Cohesive Powders by Nan, Kai, Hoy, Robert S

“…Using discrete element method simulations, we show that the settling of frictional cohesive grains under ramped-pressure compression exhibits strong history…”
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Unexpected Ductility in Semiflexible Polymer Glasses with Entanglement Length Equal to Their Kuhn Length by Dietz, Joseph D., Nan, Kai, Hoy, Robert S.

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How Does the Character of Glassy-Polymeric Cavitation Depend on Entanglement Density and the Local Poisson Ratio? by Nan, Kai, Abritta, Pedro, Hoy, Robert S

“…Using molecular dynamics simulations of two generic glassy polymers, we distinguish factors promoting cavitation that is followed by unrestrained void growth…”
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Validation and Refinement of Unified Analytic Model for Flexible and Semiflexible Polymer Melt Entanglement by Dietz, Joseph D., Kröger, Martin, Hoy, Robert S.

“…We combine molecular dynamics simulations and topological analyses (TA) to validate and refine a recently proposed unified analytic model [Hoy, R. S.; Kröger,…”
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Leptin signaling and the intervertebral disc: Sex dependent effects of leptin receptor deficiency and Western diet on the spine in a type 2 diabetes mouse model by Natelson, Devorah M, Lai, Alon, Krishnamoorthy, Divya, Hoy, Robert C, Iatridis, James C, Illien-Jünger, Svenja

“…Type 2 diabetes and obesity are associated with back pain in juveniles and adults and are implicated in intervertebral disc (IVD) degeneration. Hypercaloric…”
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Thermalization of plastic flow versus stationarity of thermomechanical equilibrium in SGR theory by Hoy, Robert S.

“… We discuss issues related to thermalization of plastic flow in the context of soft glassy rheology (SGR) theory. An apparent problem with the theory in its…”
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Why is understanding glassy polymer mechanics so difficult by Hoy, Robert S

“…In this Perspective, I describe recent work on systems in which the traditional distinctions between (i) unentangled versus well-entangled systems and (ii)…”
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Multiscale Modeling of Sub-Entanglement-Scale Chain Stretching and Strain Hardening in Deformed Polymeric Glasses by Zou, Weizhong, Moghadam, Soroush, Hoy, Robert S, Larson, Ronald G

“…Using both coarse-grained (CG) and fine-grained (FG) simulations we show how strain hardening in polymeric glasses under uniaxial extension arises from highly…”
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Effect of graded facetectomy on biomechanics of Dynesys dynamic stabilization system by Kiapour, Ali, Ambati, Divya, Hoy, Robert W, Goel, Vijay K

“…Finite element (FE) method was used to compare the biomechanics of L3-S1 lumbar spine with graded facetectomy before and after placement of Dynesys. To…”
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Thermodynamic stability of hard sphere crystals in dimensions 3 through 10 by Charbonneau, Patrick, Gish, Caitlin M., Hoy, Robert S., Morse, Peter K.

“…Although much is known about the metastable liquid branch of hard spheres—from low dimension d up to d → ∞ —its crystal counterpart remains largely unexplored…”
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Controlled fragmentation of multimaterial fibres and films via polymer cold-drawing by Shabahang, Soroush, Tao, Guangming, Kaufman, Joshua J., Qiao, Yangyang, Wei, Lei, Bouchenot, Thomas, Gordon, Ali P., Fink, Yoel, Bai, Yuanli, Hoy, Robert S., Abouraddy, Ayman F.

“…Cold-drawing of multimaterial fibres consisting of a brittle core embedded in a ductile polymer cladding results in controllable fragmentation of the core to…”
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Sex Differences in Rat Intervertebral Disc Structure and Function Following Annular Puncture Injury by Mosley, Grace E., Hoy, Robert C., Nasser, Philip, Kaseta, Timothy, Lai, Alon, Evashwick-Rogler, Thomas W., Lee, Michael, Iatridis, James C.

“…STUDY DESIGN.A rat puncture injury intervertebral disc (IVD) degeneration model with structural, biomechanical, and histological analyses. OBJECTIVE.To…”
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Entanglements in Glassy Polymer Crazing: Cross-Links or Tubes? by Ge, Ting, Tzoumanekas, Christos, Anogiannakis, Stefanos D, Hoy, Robert S, Robbins, Mark O

“…Models of the mechanical response of glassy polymers commonly assume that entanglements inherited from the melt act like chemical cross-links. The predictions…”
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RNA-Binding Protein LIN28a Regulates New Myocyte Formation in the Heart Through Long Noncoding RNA-H19 by Rigaud, Vagner Oliveira Carvalho, Hoy, Robert C., Kurian, Justin, Zarka, Clare, Behanan, Michael, Brosious, Isabella, Pennise, Jennifer, Patel, Tej, Wang, Tao, Johnson, Jaslyn, Kraus, Lindsay M., Mohsin, Sadia, Houser, Steven R., Khan, Mohsin

“…Developmental cardiac tissue holds remarkable capacity to regenerate after injury and consists of regenerative mononuclear diploid cardiomyocytes. On…”
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Strain hardening of polymer glasses: Effect of entanglement density, temperature, and rate by Hoy, Robert S., Robbins, Mark O.

“…The strain hardening behavior of model polymer glasses is studied with simulations over a wide range of entanglement densities, temperatures, strain rates, and…”
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Strain hardening in polymer glasses: limitations of network models by Hoy, Robert S, Robbins, Mark O

“…Simulations are used to examine the microscopic origins of strain hardening in polymer glasses. While traditional entropic network models can be fit to the…”
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Effect of the Ratio l K/p on Glassy-Polymeric Shear Deformation Mechanisms by Nguyen, Hong T, Hoy, Robert S

“…Using molecular dynamics simulations, we study how chain stiffness affects how glassy polymers deform under applied shear. Loosely entangled systems composed…”
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