Framework materials such as metal–organic frameworks, covalent organic frameworks, and hydrogen–bonded organic frameworks have evolved significantly over the past two decades. Thanks to their highly ...

Platinum was introduced in Europe around 1750. Even before the arrival of Columbus, platinum was well-known to native South Americans. Platinum belongs to the platinum group of metals and it is ...

Platinum remains one of the rarest and most valuable precious metals. Unlike gold and silver, platinum has limited above-ground reserves, meaning most of the metal in circulation comes from mining.

Q: Very simply, what are metals? Rick Vinci: Metals are elements. They are made up of single kinds of atoms. Most of the elements on the Periodic Table are metals, even though we don't think of them ...

For devices that are transparent to x-rays, thermoplastic and carbon-fiber composites provide properties that are competitive with traditional metals. Barry Chadwick and Chris Toto New materials are ...