نتایج جستجو برای: colloids

تعداد نتایج: 7055  

Journal: :The Journal of General Physiology 2003
Jacques Loeb

1. When we plot the values of osmotic pressure, swelling, and viscosity of gelatin solutions as ordinates over the pH as abscissae, practically identical curves are obtained for the effect of monobasic acids (HCl, HBr, HNO(3), and acetic acid) on these properties. 2. The curves obtained for the effect of H(2)SO(4) on gelatin are much lower than those obtained for the effect of monobasic acids, ...

Journal: :Scientific American 1913

Journal: :Science Advances 2017

Journal: :Anaesthesia 2005

Journal: :Liquid Crystals Today 2018

Journal: :Soft matter 2016
Aidan T Brown Ioana D Vladescu Angela Dawson Teun Vissers Jana Schwarz-Linek Juho S Lintuvuori Wilson C K Poon

We study catalytic Janus particles and Escherichia coli bacteria swimming in a two-dimensional colloidal crystal. The Janus particles orbit individual colloids and hop between colloids stochastically, with a hopping rate that varies inversely with fuel (hydrogen peroxide) concentration. At high fuel concentration, these orbits are stable for 100s of revolutions, and the orbital speed oscillates...

Journal: :Soft matter 2016
Wei Kang Lim Alan R Denton

Depletion-induced interactions between colloids in colloid-polymer mixtures depend in range and strength on size, shape, and concentration of depletants. Crowding by colloids in turn affects shapes of polymer coils, such as biopolymers in biological cells. By simulating hard-sphere colloids and random-walk polymers, modeled as fluctuating ellipsoids, we compute depletion-induced potentials and ...

Journal: :Journal of the American Chemical Society 2015
Yixin Zhao Nella M Vargas-Barbosa Megan E Strayer Nicholas S McCool Maria-Erini Pandelia Timothy P Saunders John R Swierk Juan F Callejas Lasse Jensen Thomas E Mallouk

Soluble, monomeric Ir(III/IV) complexes strongly affect the photoelectrochemical performance of IrO(x)·nH2O-catalyzed photoanodes for the oxygen evolution reaction (OER). The synthesis of IrO(x)·nH2O colloids by alkaline hydrolysis of Ir(III) or Ir(IV) salts proceeds through monomeric intermediates that were characterized using electrochemical and spectroscopic methods and modeled in TDDFT calc...

Journal: :The Journal of chemical physics 2011
I S Santos de Oliveira A van den Noort J T Padding W K den Otter W J Briels

We investigate the shear-induced structure formation of colloidal particles dissolved in non-Newtonian fluids by means of computer simulations. The two investigated visco-elastic fluids are a semi-dilute polymer solution and a worm-like micellar solution. Both shear-thinning fluids contain long flexible chains whose entanglements appear and disappear continually as a result of Brownian motion a...

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