Abstract: Ultrasound computed tomography (USCT) using ring array technology has shown great potential in breast diagnosis. This study addresses the problems of low imaging resolution and long ...

A new roll-based printing method could help turn fragile nanowire forests into dense, aligned, flexible electronic layers for wearable sensors, UV photodetectors, and next-generation device platforms.

Abstract: Nanoscale metasurfaces have become an area of growing interest in recent years with the promise of new functionalities. One area that has received a lot of attention is sub-diffraction limit ...

There's a class of problems that looks impossible to solve efficiently at first glance. "Find the longest substring with at most k distinct characters." "Find the minimum window containing all ...

We are providing an unedited version of this manuscript to give early access to its findings. Before final publication, the manuscript will undergo further editing. Please note there may be errors ...

This is why indexing is O(1): it is a single multiplication and addition, independent of array length. A string is, in most languages, a specialized sequence of characters with language-specific ...