Already have an ACS ID? Log in
Renew your membership, and continue to enjoy these benefits.
Already an ACS Member? Log in here
Choose the membership that is right for you. Discounts will be applied automatically at checkout.
Enjoy these benefits no matter which membership you pick.
Simon Sung, a postdoc at the National University of Singapore, was evaporating toluene under a vacuum when this vortex formed. He and his labmate, Ph.D. candidate Craig Fraser, decided to record a video of the vortex. The brown color comes from a dissolved cobalt complex, which Sung intended to isolate as a solid. The pair works in an organometallic chemistry lab and uses a setup like this—which combines an inert gas and a magnetic stir bar—to prevent their chemicals from reacting with oxygen or moisture. “It is this vigorous stirring, plus some bubbles caused by evaporation, that creates this mesmerizing vortex,” Fraser explains.
Submitted by Craig Fraser
Do science. Take pictures. Win money. Enter our photo contest here.
Related C&EN content:
This article has been sent to the following recipient: