Results 111 to 120 of about 248,234 (409)

Rheology of polytetrafluoroethylene [PDF]

Journal of Polymer Science Part A: General Papers, 1963
AbstractThe rheology of polytetrafluoroethylene above its melting point was studied by the technique of stress relaxation. The temperature shift for the maximum relaxation time at various temperatures fits the WLF equation, if the value of Tg is taken to be 110°C. Degradation of the polymer becomes appreciable above 380°C.
Dov Katz, M. Takahashi, Arthur V. Tobolsky   +2 more
openaire   +2 more sources

3D In Vitro Glioma‐Neuron‐Astrocyte Biomimetic Composites Recapitulate Key Molecular Mechanisms Linked to Glioblastoma Multiforme Pathophysiology

Advanced Functional Materials, EarlyView.
Glioblastoma multiforme is the most devastating and incurable brain tumor. To better study this disease, a 3D model is developed using a hyaluronic acid‐based hydrogel combined with a multicellular approach. This model recapitulates in vivo brain stiffness, cell‐extracellular matrix and cell‐cell interactions and the tumor's hijacking function with the
Mateo S. Andrade Mier, Esra Türker, Jessica Faber, Mike Friedrich, Zan Lamberger, Jeannette Weigelt, Panthipa Suwannakot, Benedikt Gantert, Abhinav Singh, Vanessa Moessler, Annemarie Sodmann, Nicoletta Murenu, Joachim Schenk, Natascha Schaefer, Torsten Blunk, Aldo R. Boccaccini, Tessa C. Lühmann, Jörg Tessmar, Jeremy M. Crook, Eva Tomaskovic‐Crook, Paul D. Dalton, Gregor Lang, Robert Blum, Reiner Strick, Silvia Budday, Katrin G. Heinze, Carmen Villmann   +26 more
wiley   +1 more source

Stress Overshoot Analysis in Flow Start-Up Tests: Aging Time Fitting of the Different Gel-Based Drilling Fluids

Gels
Drilling fluids are essential for maintaining cutting suspension during drilling, exhibiting gel-like behavior at rest and liquid-like behavior under shearing. These fluids display shear-thinning behavior, yield stress, and thixotropy.
Luis H. Quitian-Ardila, Raquel S. Schimicoscki, Yamid J. Garcia-Blanco, Eduardo M. Germer, Vladimir Ballesteros-Ballesteros, Oriana Palma Calabokis, Admilson T. Franco   +6 more
doaj   +1 more source

Origin of slow stress relaxation in the cytoskeleton

, 2019
Dynamically crosslinked semiflexible biopolymers such as the actin cytoskeleton govern the mechanical behavior of living cells. Semiflexible biopolymers nonlinearly stiffen in response to mechanical loads, whereas the crosslinker dynamics allow for ...
Koenderink, Gijsje H., MacKintosh, F. C., Mulla, Yuval   +2 more
core   +2 more sources

The Rheology Handbook

, 2019
Official Full-Text Publication: Rheological characterization of gel-in-oil-in-gel type low amplitude oscillatory shear rheology and creep recovery measurements. with the effects of rheology, the science of deformation and flow behavior. Rheology Handbook:
Thomas G. Mezger
semanticscholar   +1 more source

Chiral Engineered Biomaterials: New Frontiers in Cellular Fate Regulation for Regenerative Medicine

Advanced Functional Materials, EarlyView.
Chiral engineered biomaterials can selectively influence cell behaviors in regenerative medicine. This review covers chiral engineered biomaterials in terms of their fabrication methods, cellular response mechanisms, and applications in directing stem cell differentiation and tissue function.
Yuwen Wang, Xin Zhang, Denghui Xie, Chunying Chen, Zhifeng Huang, Zhong Alan Li   +5 more
wiley   +1 more source

Folding Langmuir Monolayers

, 2002
The maximum pressure a two-dimensional surfactant monolayer is able to withstand is limited by the collapse instability towards formation of three-dimensional material.
A. Gopal, Charles M. Knobler, D. Nelson, H. Diamant, H. E. Ries, Jr., H. E. Warriner, J. Israelachvili, J.-G. Hu, L. D. Landau, Michael Dennin, Michael Twardos, Robijn F. Bruinsma, S. T. Milner, Weixing Lu   +13 more
core   +1 more source

Print‐and‐Plate Architected Electrodes for Electrochemical Transformations Under Flow

Advanced Functional Materials, EarlyView.
Typical flow cell electrodes are composed of stochastic porous carbon, limiting understanding of electrode structure‐performance relationships. This work describes an approach, termed “print‐and‐plate,” to prepare porous electrodes by direct ink writing followed by conformal metal coating.
Dylan M. Barber, Sofía Edgar, Michael S. Emanuel, Michael D. Nelwood, Bok Yeop Ahn, Benito Román‐Manso, Thomas Cochard, Justin Platero, Kiana Amini, Chris H. Rycroft, Shmuel Rubinstein, Michael J. Aziz, Jennifer A. Lewis   +12 more
wiley   +1 more source

Analysis of Morphologic and Rheological Properties of Hyaluronic Acid Gel Fillers to Body Contouring and Its Clinical Correlation

Gels
The demand for minimally invasive body contouring procedures, particularly for gluteal augmentation, has grown significantly. This study evaluates the morphologic and rheological properties of four commercially available hyaluronic acid (HA) fillers used
Maria Cláudia Almeida Issa, Renata M. M. Viana, Paulo R. de Souza Mendes, Mônica F. Naccache, Priscila R. Varges, Eliana P. Marín Castaño, Eliandre Palermo   +6 more
doaj   +1 more source

Rheology of Weakly Vibrated Granular Media [PDF]

, 2013
We probe the rheology of weakly vibrated granular flows as function of flow rate, vibration strength and pressure by performing experiments in a vertically vibrated split-bottom shear cell. For slow flows, we establish the existence of a novel vibration dominated granular flow regime, where the driving stresses smoothly vanish as the driving rate is ...
arxiv   +1 more source