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  • 3203 Focus: Video—Tunable Origami
    DOI: 10.1103/Physics.12.44, Author(s): David EhrensteinA folding pattern produces a metamaterial with properties that can be tuned over a wide range.[Physics 12, 44] Published Fri Apr 19, 2019 [David Ehrenstein]
  • 3202 Synopsis: An Airless Test for 2D Superconductors
    Researchers repurpose a scanning tunneling microscope to measure the Meissner effect in 2D films kept under vacuum, allowing for confirmation of superconductivity.[Physics] Published Thu Apr 18, 2019 [anonymous]
  • 3201 Feature: Arts & Culture: Turbulence in The Starry Night
    DOI: 10.1103/Physics.12.45, Researchers analyzing Vincent van Gogh’s The Starry Night show that its swirling structures have turbulent properties matching those observed in the molecular clouds that give birth to stars.[Physics 12, 45] Published Thu Apr 18, 2019 [anonymous]
  • 3200 Synopsis: Drops Bounce Inside Liquids
    Oil drops falling through a layered liquid with ethanol at the top and water at the bottom repeatedly jump inside the fluid.[Physics] Published Wed Apr 17, 2019 [anonymous]
  • 3199 Synopsis: Noise-Induced Transitions in Earth’s Climate
    Calculations show that small fluctuations in solar radiation could cause a transition between a warm Earth and an icy Earth.[Physics] Published Tue Apr 16, 2019 [anonymous]
  • 3198 Synopsis: Quantum Optomechanics in a Liquid
    Quantum optomechanical effects have been observed for the first time using a liquid—superfluid helium—confined in an optical cavity.[Physics] Published Mon Apr 15, 2019 [anonymous]
  • 3197 Focus: More Voltage from Bending Silicone Rubber
    DOI: 10.1103/Physics.12.42, Author(s): Mark BuchananThe voltage generated by bending a flexible material is usually small, but a new trick can dramatically increase the effect.[Physics 12, 42] Published Fri Apr 12, 2019 [Mark Buchanan]
  • 3196 Synopsis: Explaining Light Ion Production in High-Energy Collisions  
    Pions could catalyze reactions between protons and neutrons, allowing the stable production of deuterons in high-energy ion-ion collisions.[Physics] Published Thu Apr 11, 2019 [anonymous]
  • 3195 Viewpoint: Phonons Hum a Magnetochiral Tune
    DOI: 10.1103/Physics.12.40, Author(s): Ivica ŽivkovićA chiral material exposed to a magnetic field allows phonons to travel faster in one direction than another, an effect that might be used to create an acoustic diode.[Physics 12, 40] Published Wed Apr 10, 2019 [Ivica Živković]
  • 3194 Synopsis: Ultrafast Oscilloscope for Ultrashort Electron Beam
    Driving an electron beam into a helical pattern with terahertz electromagnetic pulses allows researchers to measure the beam’s complete shape with femtosecond resolution.[Physics] Published Tue Apr 09, 2019 [anonymous]
  • 3193 Feature: Explaining Bursts of Attention on Social Media
    DOI: 10.1103/Physics.12.41, Network theorists pinpoint the factors that help drive spiky Twitter activity during major events like the discovery of gravitational waves.[Physics 12, 41] Published Mon Apr 08, 2019 [anonymous]
  • 3192 Focus: Seismic Waves Feel the Moon’s Tug
    DOI: 10.1103/Physics.12.39, Author(s): David LindleySeismic measurements reveal the influences of lunar gravitational forces and solar heat on the properties of rocks.[Physics 12, 39] Published Fri Apr 05, 2019 [David Lindley]
  • 3191 Synopsis: Igniting Fusion in the Lab
    Researchers spot the signatures of nuclear fusion in a table-top-sized setup commonly used to study the plasmas found in stars and other astrophysical objects.[Physics] Published Thu Apr 04, 2019 [anonymous]
  • 3190 Synopsis: A New Model for Electrolyte Conductivity
    A reliable and computationally cheap way of calculating the ionic conductivity of a concentrated electrolyte in a battery involves modeling ion clusters.[Physics] Published Wed Apr 03, 2019 [anonymous]
  • 3189 Viewpoint: Dipolar Quantum Gases go Supersolid
    DOI: 10.1103/Physics.12.38, Author(s): Tobias DonnerThree research teams observe that gases of magnetic atoms have the properties of a supersolid—a material whose atoms are crystallized yet flow without friction.[Physics 12, 38] Published Wed Apr 03, 2019 [Tobias Donner]
  • 3188 Synopsis: Record LHC Haul Catches Double Meson Signal  
    A huge dataset recorded at the highest particle collision energy so-far observed resolves a puzzle by revealing two meson excited states.[Physics] Published Tue Apr 02, 2019 [anonymous]
  • 3187 Feature: Seeing into the Moon’s Dark Patches
    DOI: 10.1103/Physics.12.37, A team of graduate students working at NASA revives the technique of “boulder tracking” to explore the Moon’s unlit craters.[Physics 12, 37] Published Mon Apr 01, 2019 [anonymous]
  • 3186 Viewpoint: Zooming in on Ultracold Matter
    DOI: 10.1103/Physics.12.36, Author(s): Stefan KuhrTwo superresolution microscopy methods can image the atomic density of ultracold quantum gases with nanometer resolution.[Physics 12, 36] Published Mon Apr 01, 2019 [Stefan Kuhr]
  • 3185 Focus: Learning Language Requires a Phase Transition
    DOI: 10.1103/Physics.12.35, Author(s): Philip BallThe transition a young child makes in acquiring complex language might be a kind of phase transition.[Physics 12, 35] Published Fri Mar 29, 2019 [Philip Ball]
  • 3184 Synopsis: Inflation Goes Up Against the Clock
    A proposed cosmological signature, called a clock signal, could provide a way to study the first ticks of cosmic time.[Physics] Published Thu Mar 28, 2019 [anonymous]
  • 3183 Feature: Q&A: A Physicist Dressed as a Policy Wonk
    DOI: 10.1103/Physics.12.21, Neutrino physicist Ferenc Dalnoki-Veress advises policy experts on how to rid the world of nuclear weapons.[Physics 12, 21] Published Thu Mar 28, 2019 [anonymous]
  • 3182 Viewpoint: Nanoparticles Get Cool by Light Scattering
    DOI: 10.1103/Physics.12.34, Author(s): Tongcang LiResearchers performed 3D cavity cooling of levitated nanoparticles, reaching record low temperatures by utilizing light that scatters off the particles.[Physics 12, 34] Published Wed Mar 27, 2019 [Tongcang Li]
  • 3181 Synopsis: Face Recognition with Ghost Imaging
    Using a variation of a technique known as ghost imaging, researchers demonstrate a face recognition protocol that works without complex image analysis algorithms.[Physics] Published Tue Mar 26, 2019 [anonymous]
  • 3180 Feature: Living with the New SI
    DOI: 10.1103/Physics.12.33, With new definitions for the SI units going into effect soon, the changes will be felt by those who measure small masses and forces.[Physics 12, 33] Published Mon Mar 25, 2019 [anonymous]
  • 3179 Synopsis: Entangled Photon Source Ticks All Boxes
    A quantum-dot-based device combines all of the attributes necessary for producing a reliable source of entangled photons for quantum information applications. [Physics] Published Fri Mar 22, 2019 [anonymous]
  • 3178 Synopsis: Fluid Dynamics Model for Cancer Patterns
    Computer simulations indicate that friction and viscosity determine the patterns that cancerous cells form on skin tissue.[Physics] Published Thu Mar 21, 2019 [anonymous]
  • 3177 Viewpoint: Powering an Engine with Quantum Coherence
    DOI: 10.1103/Physics.12.32, Author(s): Janet AndersExperiments demonstrate a quantum-coherence-induced power increase for quantum heat engines over their classical counterparts.[Physics 12, 32] Published Wed Mar 20, 2019 [Janet Anders]
  • 3176 Viewpoint: A Quasicrystal for Quantum Simulations
    DOI: 10.1103/Physics.12.31, Author(s): Luis SantosExperimentalists realize a Bose-Einstein condensate on a 2D quasicrystal optical lattice, opening the path for simulations of a variety of quantum many-body phenomena in these fractal structures.[Physics 12, 31] Published Wed Mar 20, 2019 [Luis Santos]
  • 3175 Synopsis: Air Jets Reduce Car Drag
    Wind tunnel experiments show how blasting air from the back of a vehicle can reshape the vehicle’s wake and lower its drag by several percent.[Physics] Published Tue Mar 19, 2019 [anonymous]
  • 3174 Synopsis: The Signature of Magnetic Monopoles
    Calcu­lations uncover the neutron-scattering signature of the magnetic monopoles that propagate through quantum spin ices.[Physics] Published Mon Mar 18, 2019 [anonymous]