Category Archives: APS Physics

Unjammed Emulsions Collapse to Liquids

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

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

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

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

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

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

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Monitoring Volcanic Eruptions Using Lightning

Volcanologist Alexa Van Eaton explains the origins of electrical activity in volcanic ash plumes and why it sometimes leads to detectable lightning. Continue reading

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Some Granular Columns Weigh Too Much

Particles packed inside a cylinder can experience a downward force from the walls, resulting in an apparent weight increase.  Continue reading

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Spin Transport in Nonmagnetic Materials

Interactions between electron spins and acoustic lattice vibrations in a nonmagnetic material could generate a spin current over a long distance.  Continue reading

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Tracking Forces with Sound

Acoustic emission from a ruptured liquid film reveals the forces that drive the liquid’s flow. Continue reading

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