World's smallest "refrigerator" has a volume of one cubic micrometer

By putting a new spin on decades-old thermoelectric technology, scientists at the University of California, Los Angeles (UCLA) have developed a tiny microscopic cooling device they describe as the "world’s smallest refrigerator." It’s hardly the place to keep leftovers from spoiling or your beers cold on a summer’s day, but the team hopes this nanoscale device can act as a springboard for advanced systems that cool things almost instantaneously.