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Physical Review Letters, ISSN 0031-9007, 2016, Volume 117, Issue 21, p. 217802
When sheared, most elastic solids including metals, rubbers, and polymer gels dilate perpendicularly to the shear plane. This behavior, known as the Poynting... 
Journal Article | SHEAR | PHYSICS, MULTIDISCIPLINARY | SEMIFLEXIBLE BIOPOLYMER NETWORKS | FLUCTUATIONS | NEGATIVE NORMAL STRESS | DEFORMATION | NONLINEAR ELASTICITY | MODULI | FIBRIN | Stresses | Fibrin | Pore size | Shear | Gels | Polymer gels | Porosity | Biopolymers
Journal Article
Soft matter, ISSN 1744-683X, 02/2019, Volume 15, Issue 7, pp. 1666 - 1675
Hydrogels of semiflexible biopolymers such as collagen have been shown to contract axially under shear strain, in contrast to the axial dilation observed for... 
POLYMER SCIENCE | FORCE DISTRIBUTIONS | PHYSICS, MULTIDISCIPLINARY | RIGIDITY PERCOLATION | MATERIALS SCIENCE, MULTIDISCIPLINARY | CHEMISTRY, PHYSICAL | NEGATIVE NORMAL STRESS | NONLINEAR ELASTICITY
Journal Article
Soft matter, ISSN 1744-683X, 02/2019, Volume 15, Issue 7, pp. 1666 - 1675
Hydrogels of semiflexible biopolymers such as collagen have been shown to contract axially under shear strain, in contrast to the axial dilation observed for... 
Journal Article
Journal of Polymer Science Part B: Polymer Physics, ISSN 0887-6266, 09/2016, Volume 54, Issue 17, pp. 1767 - 1775
ABSTRACT Alginate hydrogels are polysaccharide biopolymer networks widely useful in biomedical and food applications. Here, we report nonlinear mechanical... 
negative normal stress | strain‐stiffening | hydrogels | rheology | polysaccharide | strain-stiffening | CELLS | POLYMER SCIENCE | GELS | BEHAVIOR | NETWORKS | NONLINEAR ELASTICITY | VISCOELASTICITY | CHAIN | STIFFNESS | EXTRACELLULAR-MATRIX | SCATTERING | Polysaccharides
Journal Article
Macromolecules, ISSN 0024-9297, 07/2017, Volume 50, Issue 13, pp. 5208 - 5213
We use the two-fluid model to theoretically predict the relaxation dynamics of the normal stress of a gel, which is twisted by a rotational rheometer in the... 
POLYMER SCIENCE | NEGATIVE NORMAL STRESS | DEFORMATION | NONLINEAR ELASTICITY
Journal Article
Physical Review E, ISSN 1539-3755, 2013, Volume 88, Issue 5, pp. 052601 - 1/9
When loaded in simple shear deformation, polymeric materials may develop so-called normal stresses: stresses perpendicular to the direction of the applied... 
Research Support, Non-U.S. Gov't | Journal Article | CONCENTRATED SUSPENSIONS | INSTABILITY | GELS | PARTICLES | PHYSICS, FLUIDS & PLASMAS | BEHAVIOR | NEWTONIAN FLUIDS | NEGATIVE NORMAL STRESS | PHYSICS, MATHEMATICAL | NONLINEAR ELASTICITY | FLOW
Journal Article
Mechanical Systems and Signal Processing, ISSN 0888-3270, 05/2019, Volume 123, pp. 244 - 263
A new magnetic negative stiffness isolator based on Maxwell normal stress is proposed to improve the low-frequency vibration isolation performance of a system... 
Magnetic negative stiffness | Vibration isolation | Maxwell magnetic normal stress | Active-passive hybrid control | SYSTEM | DESIGN | QUASI-ZERO-STIFFNESS | ENGINEERING, MECHANICAL | Computer simulation | Static electricity | Hybrid control | Weight reduction | Hybrid systems | Vibration control | Stiffness | Active control | Magnetic circuits | Vibration analysis
Journal Article
by Chen, P
EPL, ISSN 0295-5075, 02/2014, Volume 105, Issue 3, pp. 38003 - p1-38003-p4
Cross-linked biopolymer filament networks that constitute the cytoskeleton in living cells show rich mechanical response including large strain stiffening and... 
GELS | PHYSICS, MULTIDISCIPLINARY | NEGATIVE NORMAL STRESS | Stresses | Networks | Filaments | Shear stress | Crosslinking | Springs | Density | Biopolymers
Journal Article
RSC Advances, ISSN 2046-2069, 2014, Volume 4, Issue 3, pp. 1246 - 1255
We have investigated the role that representative nonequilibrium carbon nanotube (CNT) network structures play in the flow-induced property changes of... 
CRYSTALLIZATION | SHEAR | POLYSTYRENE | SHEET/BISMALEIMIDE NANOCOMPOSITES | ELECTRICAL-CONDUCTIVITY | RHEOLOGY | POLYMER NANOCOMPOSITES | COMPOSITES | NEGATIVE NORMAL STRESS | CHEMISTRY, MULTIDISCIPLINARY | POLYETHYLENE | Stresses | Networks | High aspect ratio | Polypropylenes | Carbon nanotubes | Extrusion | Nanostructure | Isotactic
Journal Article
Journal of Rheology, ISSN 0148-6055, 11/2010, Volume 54, Issue 6, pp. 1243 - 1266
Journal Article
Journal Article
Macromolecules, ISSN 0024-9297, 01/2011, Volume 44, Issue 1, pp. 140 - 146
Networks and gels are part of our everyday experience starting from automotive tires and rubber bands to biological tissues and cells. Biological and polymeric... 
DYNAMICS | SEMIFLEXIBLE POLYMERS | POLYMER SCIENCE | NEGATIVE NORMAL STRESS | DNA | MOLECULES
Journal Article
Nuclear medicine communications, 09/2016, Volume 37, Issue 9, p. 899
Normal stress myocardial single photon emission computed tomography (SPECT) usually indicates good physiologic function of all coronary lesions, and also... 
Coronary Stenosis - diagnostic imaging | Tomography, Emission-Computed, Single-Photon - methods | Prognosis | Humans | Middle Aged | Kaplan-Meier Estimate | False Negative Reactions | Male | Coronary Angiography | Coronary Stenosis - pathology | Exercise Test | Female | Aged
Journal Article
Reviews of Modern Physics, ISSN 0034-6861, 2014, Volume 86, Issue 3, pp. 995 - 1036
This is an overview of theoretical approaches to semiflexible polymers and their networks. Such semiflexible polymers have large bending rigidities that can... 
MICROSCOPIC VISCOELASTICITY | PHYSICS, MULTIDISCIPLINARY | FORCE PROPAGATION | ELASTIC NETWORKS | THERMAL FLUCTUATIONS | CONCENTRATED ISOTROPIC SOLUTIONS | NEGATIVE NORMAL STRESS | CONSTITUTIVE MODEL | MECHANICAL-PROPERTIES | NONLINEAR ELASTICITY | DISORDERED SOLIDS | Biological research | Mechanical properties | Usage | Polymers | Biology, Experimental
Journal Article
European Neuropsychopharmacology, ISSN 0924-977X, 2009, Volume 19, Issue 4, pp. 283 - 295
Abstract Background In light of clinical reports suggesting that early benzodiazepine administration interferes with long-term recovery from traumatic stress,... 
Internal Medicine | Psychiatry | Extreme behavioral response | Animal model | Corticosterone | Minimal behavioral response | Post-traumatic stress disorder | Early drug intervention | Secondary prevention | Benzodiazepines | INDUCED ACTIVATION | MENTAL-HEALTH PROBLEMS | PSYCHIATRY | PREDATOR STRESS | NEUROSCIENCES | CLINICAL NEUROLOGY | CORTICOTROPIN-RELEASING-FACTOR | BEHAVIORAL-RESPONSES | CARDIAC-SURGERY | SEPTIC SHOCK | PHARMACOLOGY & PHARMACY | QUALITY-OF-LIFE | PITUITARY-ADRENAL AXIS | TRIAZOLOBENZODIAZEPINE ALPRAZOLAM | Anti-Anxiety Agents - administration & dosage | Severity of Illness Index | Rats | Male | Maze Learning - drug effects | Freezing Reaction, Cataleptic - drug effects | Rats, Sprague-Dawley | Dose-Response Relationship, Drug | Stress Disorders, Post-Traumatic - blood | Animals | Analysis of Variance | Time Factors | Stress Disorders, Post-Traumatic - drug therapy | Alprazolam - administration & dosage | Reaction Time - drug effects | Acoustic Stimulation - adverse effects | Reflex, Startle - drug effects | Behavior, Animal - drug effects | Corticosterone - blood | Disease Models, Animal | Alprazolam | Psychotropic drugs | Analysis | Models | Psychiatric services | PTSD | Neuroendocrinology | Longitudinal Study | Neuroendocrine Testing | Effects | Negative Therapeutic Reaction | Animal Models | Startle Reflex
Journal Article