Results 21 to 30 of about 115,031 (307)

Relaxing in Foam [PDF]

open access: yesPhysical Review Letters, 2003
We investigate the mechanical response of an aqueous foam, and its relation to the microscopic rearrangement dynamics of the bubble-packing structure. At rest, even though the foam is coarsening, the rheology is demonstrated to be linear. Under flow, shear-induced rearrangements compete with coarsening-induced rearrangements.
Gopal, A. D., Durian, Douglas J
openaire   +4 more sources

Catalytic chemical vapor deposition synthesis of single- and double-walled carbon nanotubes from α-(Al1−xFex)2O3 powders and self-supported foams [PDF]

open access: yes, 2009
An investigation of the potential interest of α-alumina–hematite foams, as opposed to powders, as starting materials for the synthesis of carbon nanotubes (CNTs) by catalytic chemical vapor deposition method was performed.
Cordier, Anne   +5 more
core   +2 more sources

Modeling polycrystals with regular polyhedra

open access: yesMaterials Research, 2006
Polycrystalline structure is of paramount importance to materials science and engineering. It provides an important example of a space-filling irregular network structure that also occurs in foams as well as in certain biological tissues.
Paulo Rangel Rios, Martin Eden Glicksman
doaj   +1 more source

Microplastics Increase Soil pH and Decrease Microbial Activities as a Function of Microplastic Shape, Polymer Type, and Exposure Time

open access: yesFrontiers in Environmental Science, 2021
Microplastic pollution is a topic of increasing concern, especially since this issue was first addressed in soils. Results have so far been variable in terms of effects, suggesting that there is substantial context-dependency in microplastic effects in ...
Tingting Zhao   +5 more
doaj   +1 more source

Smart Particles as Foam and Liquid Marble Stabilizers

open access: yesKONA Powder and Particle Journal, 2014
Small particles adsorbed to gas-liquid interfaces are widely observed and utilized in many products and various industrial sections, such as flotation, washing, food, water treatment, treatment of radioactive wastes,
Syuji Fujii, Ryo Murakami
doaj   +1 more source

Investigation of shear banding in three-dimensional foams [PDF]

open access: yes, 2010
We study the steady flow properties of different three-dimensional aqueous foams in a wide gap Couette geometry. From local velocity measurements through Magnetic Resonance Imaging techniques and from viscosity bifurcation experiments, we find that these
Cohen-Addad, Sylvie   +2 more
core   +4 more sources

Piezoelectric Polymeric Foams as Flexible Energy Harvesters: A Review

open access: yesAdvanced Energy & Sustainability Research, 2022
Piezoelectric energy harvesters (PEHs) have the potential to power low‐power electronic devices and can advance, self‐powered, autonomous electronics to the next level.
Manauwar Ali Ansari, Patcharapon Somdee
doaj   +1 more source

Operator Spin Foam Models [PDF]

open access: yes, 2010
The goal of this paper is to introduce a systematic approach to spin foams. We define operator spin foams, that is foams labelled by group representations and operators, as the main tool.
Alesci E Bianchi E Magliaro E Perini C   +33 more
core   +2 more sources

IMAGE ANALYSIS CHARACTERIZATION OF HIGHLY ORIENTED FREEZE-DRYING POROUS MATERIALS

open access: yesImage Analysis and Stereology, 2011
Image analysis has been used as a potential tool for the characterization of the texture of ultramacroporous foams prepared by freeze-drying. It has been shown that this technique actually provides valuable information on the structure of this kind of ...
Silvia Blacher   +3 more
doaj   +1 more source

Synergistic Effect of Intumescent Flame Retardant and Organically Modified Montmorillonite on Flame-Retardant and Foaming Properties of High Density Polyethylene/Walnut Shell Powder Biocomposites [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2017
The synergistic effects of organic montmorillonite (OMMT) and ammonium polyphosphate (APP) on flame retardant enhancement of High density polyethylene/walnut shell powder (HDPE/WSP) biocomposite were investigated by using the limiting oxygen index (LOI),
Ebrahim Bahreyni   +3 more
doaj   +1 more source

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