نتایج جستجو برای: colloidal particles
تعداد نتایج: 169710 فیلتر نتایج به سال:
We present here an experimental and theoretical study of the application of two-dimensional exchange nuclear magnetic resonance spectroscopy ~NMR! to the investigation of the rotational diffusion of colloidal particles. The theoretical discussion includes the nature of the NMR frequency time-correlation function where the NMR interaction is represented by the chemical shift anisotropy ~CSA!. Ti...
Blue phase colloidal crystals and dielectric nanoparticle/polymer doped blue phases are demonstrated to combine multiple components with different symmetries in one photonic material, creating a photonic crystal with variable and micro-controllable photonic band structure. In this composite photonic material, one contribution to the band structure is determined by the 3D periodic birefringent o...
Colloidal particles aremicroscopic solid particles suspended in a fluid. Colloids are small enough that thermal energy drives their dynamics and ensures equilibrationwith the suspending fluid; they are also large enough that their positions andmotions can bemeasured precisely using optical methods, such as light scattering and laser-scanning confocal fluorescence microscopy. Colloidal suspensio...
We use three-dimensional confocal microscopy to study the structure of a dense colloidal liquid confined between two parallel glass plates. The colloidal sample is at a volume fraction of 50% and is a binary mixture of 2 μm and 3 μm diameter particles to prevent crystallization. The plate separation ranges from 50 small particle diameters to 3 small particle diameters. While particles form laye...
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