Polar vortex on repeat: Frigid temps expected to blast much of US

A chilling polar vortex is set to bring snow and ice to the South and East this week. We show where.
GitHub

nsidc/polarstereo-lonlat-convert-py

Python functions for converting polar stereographic coordinates. This repository contains conversion functions between longitude/latitude and generic x, y (km) coordinates. There are also conversion ...
Nature

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

This review summarizes recent developments in the direct synthesis and ion exchange-based reactions leading to hybrid organic–inorganic and all-inorganic lead halide perovskite nanocrystals. Optical ...
IEEE

Sheet resistivity measurements on rectangular surfaces–general solution for four point probe conversion factors

Abstract: Voltage-current ratios, measured using probes on the surface of a homogeneous conducting sheet, are converted to resistance per square by “conversion factors”. For rectangles, a closed form ...
GitHub

Process math expressions, convert them to machine-readable form, and calculate them.

This package is aimed to help you to work with formulas, parts of equations and other forms of simple math expressions in your projects. This package supports custom variables too. For more details ...
C&EN

Hierarchical Surface Patterns upon Evaporation of a ZnO Nanofluid Droplet: Effect of Particle Morphology

† ‡ † Bristol Centre for Functional Nanomaterials (BCFN), HH Wills Physics Laboratory, and ‡ School of Physics, HH Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, U.K ...
C&EN

Unveiling a New 2D Semiconductor: Biphenylene-Based InN

For rectangular lattices, the key conditions, namely C11 > 0, C66 > 0, and C11C22 > (C12) 2, were fulfilled, confirming the mechanical stability of BPN-InN. BPN-InN exhibits maximum and minimum Young ...