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We demonstrate a novel chemical-free water-based technique to synthesize various forms of cuprous oxide nanostructures at room temperature. The self-assemblies of these nanostructures are formed by the anodic oxidation of Cu in deionized (DI) water. Direct growth of these nanostructures on SiO2/Si (100) substrate has been successfully achieved by tuning the bias voltage and the growth duration. A variety of nanostructures from one-dimensional nanowires to different complex two- and three-dimensional structures are successfully grown by this method. We show that the morphological evolution in the self-assembly of the structures strongly depends on the spatial electric field distribution on the substrate. Furthermore, the electrical devices made from these nanowire networks exhibit promising photon sensing characteristics under white lig...
The protein-synthesizing machinery of the cell, the ribosome, is made up of two subunits, which in bacteria are held together by 12 molecular bridges. Understanding the mechanism and timeline of bridge formation is crucial to understanding the mechanism of bacterial translation initiation. To study the timeline of bridge formation, we developed microfluidic devices that mix two interacting components, spray the mixture onto an electron microscopy grid, and flash freeze the grid for a minimum reaction time of 9.4 ms. This study shows for the first time to the authors' knowledge that eight of the 12 bridges form within 9.4 ms, whereas the remaining four bridges take longer than 43 ms to form.
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