Silicon is a material well suited for refractive lenses operating at high X-ray energies (>50 keV), particularly if implemented in a single-crystal form to minimize small-angle scattering. A single-crystal silicon saw-tooth refractive lens, fabricated by a dicing process using a thin diamond wheel, was tested with 115 keV X-rays, giving an ideal 17 microm line focus width in a long focal length...

The study aims to analyze the spatial relationship between critical infrastructure and socioeconomic regions in Texas cities, identify areas at risk, develop effective emergency response strategies. It also focuses on analyzing connectivity of Combined Statistical Areas (CSAs) different census through various modes transportation, that require upgrades, inform policy decisions aimed improving t...

A surface acoustic wave (SAW) formaldehyde gas sensor was fabricated on a 42° 75? ST-cut quartz substrate, with composite sensing layer of zeolitic imidazolate framework (ZIF)-8 polyethyleneimine (PEI)/bacterial cellulose (BC) nanofilms. The addition snowflake-like ZIF-8 structure the PEI/BC sensitive film significantly improves hydrophobicity SAW and increases its sensitivity to gas. It also r...

We introduce and characterize a new class of polygons that models wood, stone, glass, and ceramic shapes that can be cut with a table saw, lapidary trim saw, or other circular saw. In this model, a circular saw is a line segment (in projection) that can move freely in empty space, but can only cut straight into a portion of material. Once a region of material is separated from the rest, it can ...