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Quantum microscope sees tiny changes in atoms

05.05.2022

Physicists at the University of California, Irvine have demonstrated the use of a hydrogen molecule as a quantum sensor in a scanning tunneling microscope (STM) equipped with a terahertz laser that can measure the chemical properties of materials with unprecedented resolution.

This new technique could also be applied to the analysis of XNUMXD materials that could potentially play a role in advanced energy systems, electronics and quantum computers.

Researchers from the Department of Physics and Astronomy and the Department of Chemistry at UCI described how they placed two bonded hydrogen atoms between an STM silver tip and a sample consisting of a flat copper surface with small islands of copper nitride.

Using laser pulses of trillionths of a second in duration, scientists were able to excite a hydrogen molecule and detect changes in its quantum states at cryogenic temperatures and in the ultra-high vacuum of the instrument, creating images of an atom-scale sample.

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Random news from the Archive

Lightning strikes the sky 14.06.2002

During a tropical thunderstorm on the coast of Puerto Rico managed to photograph the "inverted" lightning. She hit from the cloud not into the ground, but into the sky, to a height of up to 70 kilometers. At its core, it was a powerful electrical breakdown between the clouds and the ionosphere.

The researchers suggest that such discharges occur quite often, they just cannot always be registered. "Inverted" lightning can play an important role in the overall energy balance of the planet.

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