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Showing 1 to 20 of 1035 for “"colloidal"”.
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Colloidal Electronics
… them unique electronic functions. The resulting colloidal electronic 'cells', comprised of microscopic circuits connecting artificial 'organelles' (e.g., generators, sensors, logic gates, etc.), combine the modularity of modern electronics with the characteristic mobility found in dispersive …
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Colloidal phoretic motion
… of particles in the final dried structure. A colloidal hydrodynamic model valid up to near close-packing, is derived and solved numerically to model diffusion, excluded volume diffusiophoresis, hard sphere and Derjaguin–Landau–Verwey–Overbeek (DLVO) interactions in a drying film. Excluded …
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Colloidal interactions of thorium
… to determine the interactions of thorium with colloidal humic acid and colloidal silica under various aqueous conditions and organic carbon from Blue point, Muddy, and Rogers Springs. A colloidal distribution study was done in spiked Lake Tahoe and Mono Lake samples. Plutonium was studied as an …
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Thermophoresis in Colloidal Suspensions
… theory of non-equilibrium thermodynamics. The colloidal flux is split up into an interfacial single-colloid contribution and a bulk contribution, followed by a determination of transport coefficients based on Onsager’s reciprocal relations. It is further shown how the phenomenological …
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Hybrid optoelectronics with colloidal nanocrystals
… spectroscopic studies of the exciton dynamics in colloidal spherical cadmium sulfide CdS nanocrystals (NC) in the vicinity of a single indium gallium nitride InGaN quantum well (QW) in dependence of temperature. QWs of the alloy material InGaN exhibit a dependence of the exciton dimensionality on …
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Ultrasound propagation in colloidal dispersions
… them to measurements of ultrasonic parameters in colloidal dispersions. A brief description of the properties and uses of ultrasound propagation in dispersions is followed by an extensive review of theories which relate the particulate properties of the dispersions to the measurable ultrasonic …
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Colloidal structures with novel functions
… interfaces are proposed. For the development of colloidal systems showing novel functionality we have designed various experimental systems for imaging the adsorption of surfactant at the interface between a nematic liquid crystal (LC) and water, self.propelling stimuli - responsive hydrogels and …
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Click chemistry for colloidal assembly
… (CuAAC) to develop an approach for directed colloidal assembly. Colloidal crystals are used here as an ideal model system for studying directed self assembly. This study develops a modular approach towards colloidal assembly in which click chemistry is employed as an assisting agent via a …
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Microfluidic synthesis of colloidal nanomaterials
… for synthesis and surface-engineering of colloidal particles. Bottom-up assembly through colloidal nucleation and growth is a popular route to the controlled synthesis of nanomaterials. Standard bench-scale synthetic chemistry techniques often involve non-uniform spatial and temporal …
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Motion-reversal in colloidal walkers
In this research, the manipulation of colloidal systems composed of superparamagnetic particles in water is studied by a simulation method. In response to an external magnetic field, the dipoles drive the beads to self-assemble into chains, which rotate and consequently move across a nearby …
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The kinetics of colloidal aggregation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1985.
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Hybrid light emitting diodes based on solution processed polymers, colloidal quantum dots, and colloidal metal nanoparticles
… system and mono-polymer device. Secondly, PbS colloidal quantum dot are introduced to form hybrid device with polymer and to migrate the device emission into near-IR range. As we show, the dithiol molecules used to cross-link quantum dots determine the optical and electrical property of the …
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Physical modelling of colloidal slurry flows
… at the rheology and pipeline flow properties of colloidal suspensions dispersed in electrolytes of different concentration and type. Fuso silica spheres (0.8pm) form the dispersed phase of the suspension, and KN03, KCI electrolytes the continuous phase. The strength of the particle-particle …
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The Colloidal Glass Transition Under Confinement
… accepted theoretical description. Here, we use colloidal particles as hard-sphere models and experimentally study particle dynamics of colloidal suspensions under different confinements near the glass transition. In three dimension (3D), we design a colloidal system, where particles are confined …
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Continuous dielectrophoretic separation of colloidal particles
Dielectrophoresis (DEP) is a technique that can be used to separate particle at microscale. It is of particular interest because it is a non-invasive, non-destructive and non-contact technique, which ensures that sample composition remains the same with only the particles being separated. On the …
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PHYSICAL CHEMISTRY OF COLLOIDAL-NANOPARTICLE INTERACTIONS
… by merging the advantageous of inorganic colloidal particles (fixed shape, hard matter) with organic biopolymers (flexible shape, soft matter).In the current dissertation, nanostructured silica suspensions with tunable rheological characteristics were designed via steric and electrostatic …
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Confined Flow of Attractive Colloidal Suspensions
… dynamics, and flow properties of attractive colloidal suspensions can be controllably tuned from fluid-like to solid-like by varying the interparticle attractions and the particle size dispersity.
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Colloidal microgels: synthesis, characterisation and applications
Four sets of NIPAM and non-NIPAM based colloidal microgels have been synthesized by a surfactant-free emulsion polymerisation (SFEP) technique, which are: (i) poly (NIPAM) based homo-polymer, (ii) poly (NIPAM) based co-polymer, (iii) hydrophobically modified homo-polymer and (iv) hydrophobically …
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