SCIENCE INITIATIVE HARIPAD KERALA INDIA

First photo of shadow of single atom

In an international scientific breakthrough, a Griffith University research team has been able to photograph the shadow of a single atom for the first time. "We have reached the extreme limit of microscopy; you can not see anything smaller than an atom using visible light," Professor Dave Kielpinski of Griffith University's Centre for Quantum Dynamics in Brisbane, Australia. "We wanted to investigate how few atoms are required to cast a shadow and we proved it takes just one," Professor Kielpinski said. Published this week in Nature Communications, "Absorption imaging of a single atom "is the result of work over the last 5 years by the Kielpinski/Streed research team. At the heart of this Griffith University achievement is a super high-resolution microscope, which makes the shadow dark enough to see. Holding an atom still long enough to take its photo, while remarkable in itself, is not new technology; the atom is isolated within a chamber and held in free space by electrical forces.Read More...

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