Category Archives: APS Physics

Coldest Electrons Ever from Photocathodes

Posted on August 6, 2020 by rberkowitz

Researchers have generated the coldest electrons to date from solid-state photocathodes, an achievement that could improve electron sources for particle accelerators and ultrafast electron microscopy applications.  Continue reading →

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Real-Time Measurements of Earth’s Spin and Tilt

Posted on July 17, 2020 by rberkowitz

An array of ring lasers provides the first continuous measurement of Earth’s motion from a single location.  Continue reading →

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Building Novel Carbon Allotropes

Posted on July 2, 2020 by rberkowitz

Calculations indicate that a form of carbon synthesized from pentagonal hydrocarbon molecules could have unusual electrical and mechanical properties.  Continue reading →

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Ion Recoil from Photon Beam Observed

Posted on June 22, 2020 by rberkowitz

Experiments confirm that photonionized molecules get a backward kick, as predicted by theory.  Continue reading →

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Unjammed Emulsions Collapse to Liquids

Posted on May 27, 2020 by rberkowitz

An emulsion’s rigidity disappears when the droplets’ random thermal motion overcomes the confining pressure that binds them.  Continue reading →

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Efficient Detection of Microwave Photons

Posted on May 18, 2020 by rberkowitz

A new single-photon detector minimizes false positives by ensuring that a qubit switches to its excited state if and only if a photon enters a microwave resonator.  Continue reading →

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Novel Coronavirus Prompts Computer Sharing

Posted on April 24, 2020 by rberkowitz

A consortium of high-performance computing centers helps fast-track COVID-19 vaccine, drug, and epidemiology calculations.  Continue reading →

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Excited Molecules Escape Their Trap

Posted on April 24, 2020 by rberkowitz

The loss of ultracold molecules from an optical trap comes from optical excitation of the complexes that form when two of the molecules collide.  Continue reading →

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Three Helium-Ammonia Compounds Found for Icy Planets

Posted on April 10, 2020 by rberkowitz

Stable compounds made from helium and ammonia are predicted to form at the extreme pressures found inside Neptune and Uranus.  Continue reading →

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Untangling Neurons with Scattered Light

Posted on April 3, 2020 by rberkowitz

Light-scattering measurements and high-performance computing enable mapping of complex nerve fiber organizations in the brain.  Continue reading →

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