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Polymeric Nanoneedle Arrays
In article number 2104828, Yaping Chen, Nicolas H. Voelcker, Roey Elnathan, and co‐workers demonstrate the fabrication of relatively low‐cost and high throughput polymeric nanoneedles from cell culture polystyrene. The nanoneedles with precise geometry are imprinted directly on polystyrene from the cell culture petri dish via nanoimprint lithography. The nanoneedles arrays...
Tunable vertically aligned nanostructures, usually fabricated using inorganic materials, are powerful nanoscale tools for advanced cellular manipulation. However, nanoscale precision typically requires advanced nanofabrication machinery and involves high manufacturing costs. By contrast, polymeric nanoneedles (NNs) of precise geometry can be produced by replica molding or nanoimprint lithography—rapid,...
In article number 2004695, Dougal McCulloch and co‐workers report the synthesis of nanocrystalline diamond from a compressed graphitic precursor at room temperature in a diamond anvil cell. Diamond is one of the most important materials for 21st century technology, but there is much that is still not understood about how it forms. This article shows how the presence of shear at high pressures leads...
Diamond is an attractive material due to its extreme hardness, high thermal conductivity, quantum optical, and biomedical applications. There is still much that is not understood about how diamonds form, particularly at room temperature and without catalysts. In this work, a new route for the formation of nanocrystalline diamond and the diamond‐like phase lonsdaleite is presented. Both diamond phases...
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