Chem Chronicles
Chem Chronicles: A Look Back on 80 years of Thin-Film Evaporation
Eighty years ago, in 1944, Dr. Hans Müller from Winterthur, Switzerland filed a patent application for a device designed to process liquid substances at the Swiss Federal Institute of Intellectual Property in Bern. Liquids prone to fouling on heated surfaces,…
Chem Chronicles: The first patent holder in the U.S. was a ‘Pott Ash Maker’
Robert Fulton, Eli Whitney, Thomas Edison, Henry Ford — these are some of the larger-than-life figures who spring to mind when reflecting on the history of innovation and invention in the U.S. But the first person in American history to…
Chem Chronicles: Discovery and Re-discovery of Mechanochemistry
A reclusive expert of 19th-century photography laid the foundation for mechanochemistry, a once-ignored field that is re-emerging in ‘green chemistry’ applications For decades in the late 1800s, Carey Lea had been fascinated by the chemistry of photography, and had studied…
ChemChronicles: ‘Eye it Before You Buy It,’ The Invention of Cellophane
Transparent polymer film started with an accident . . . and spurred a packaging revolution One night in Paris, in 1900, Swiss chemist Jacques Brandenberger was enjoying dinner in a restaurant when he noticed that a fellow patron had spilled…