Logarithmic rate dependence of force networks in sheared granular materials

Article Abstract:

Several models of slow, dense granular flows make the assumption that the stresses occurring internally are autonomous of the shearing rate. In comparison, logarithmic rate dependence is extant in solid-on-solid friction, geological settings and elsewhere.

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Upper limits to submillimetre-range forces from extra space-time dimensions

Article Abstract:

The approach showing the most promise to the long-pursued unified description of the four forces of nature and the elementary particles is string theory. However, there is no direct evidence supporting it.

Space and time, Spacetime

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Three-dimensional binary superlattices of magnetic nanocrystals and semiconductor quantum dots

Article Abstract:

Research has been conducted on semiconductor quantum dots and magnetic nanocrystals. The authors describe the self-assembly of these materials into the ordered three-dimensional superlattices.

United States, All Other Miscellaneous Nonmetallic Mineral Product Manufacturing, Crystals, Usage, Composition, Nanotechnology, Chemistry, Physical and theoretical, Physical chemistry, Magnetic properties, Properties, Semiconductors (Materials), Structure, Applied mathematics

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