Smart labels could tell you when to toss food and makeup, as this video shows
Is it safe to eat the leftover cheese in the fridge or put on the eye shadow that has been in your cabinet for several years? A smart label could help. That’s the hope of a team of researchers who have developed a new sensor containing nanostructures that change color when they bind to compounds that indicate spoilage or contamination by bacteria. Whereas currently available sensors use liquid solutions that migrate on channels...