Colloidal crystals model real world
نویسندگان
چکیده
منابع مشابه
Acoustically trapped colloidal crystals that are reconfigurable in real time.
Photonic and phononic crystals are metamaterials with repeating unit cells that result in internal resonances leading to a range of wave guiding and filtering properties and are opening up new applications such as hyperlenses and superabsorbers. Here we show the first, to our knowledge, 3D colloidal phononic crystal that is reconfigurable in real time and demonstrate its ability to rapidly alte...
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The “pressure and material gaps” separating UHV and technical catalytic investigations have been bridged in recent years by combining in a single apparatus the ability to measure kinetics at elevated pressures on single-crystal catalysts with the capabilities to carry out surface analytical measurements. In these high-pressure/surface analytical studies a well-defined, single-crystal plane is u...
متن کاملTaylor instabilities in colloidal crystals
2014 Recently we have developed a Couette viscosimeter for studying the shearing of colloidal crystals. We report here that with increasing shear rate the colloidal crystal melts (for 03C9crit) and above a critical shear rate, 03C9T0, Taylor instabilities develop. After stopping the shearing flow the suspension recrystallizes in a special texture which preserves the pattern of the Taylor rolls....
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We have performed synchrotron small-angle x-ray diffraction experiments on charge-stabilized colloidal crystals. The mean squared displacements, obtained from Debye-Waller factors, decrease with increasing density beyond freezing. Irrespective of the range of the repulsion, our data and previous results lie on a common curve, linearly scaled between the melting and close-packed densities. Surpr...
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ژورنال
عنوان ژورنال: Nature
سال: 1995
ISSN: 0028-0836,1476-4687
DOI: 10.1038/378231a0