中国物理学会期刊网
海外物理新闻

 
Black Hole as Extreme Particle Accelerator

2018-12-14 18:00:00.0

Author(s): Meredith Fore

Large-scale simulations suggest a mechanism by which supermassive black holes could accelerate particles to ultrahigh energies.


[Physics 11, 130] Published Fri Dec 14, 2018

doi:10.1103/Physics.11.130
 
 
How Walkers Avoid Collisions

2018-12-14 18:00:00.0

Observations of large numbers of pedestrians in two new studies offer insights into how humans avoid bumping into each other. ?


[Physics] Published Fri Dec 14, 2018

 
 
Turning Round Drops Square

2018-12-13 18:00:00.0

Researchers can change the shape of a liquid drop by placing it between two stretched elastic films, allowing the drop to be used as a tiny adjustable lens.


[Physics] Published Thu Dec 13, 2018

 
 
A Quantum Defect Sees its Charged Surroundings

2018-12-12 18:00:00.0

Author(s): Ania Bleszynski Jayich

Nitrogen-vacancy centers in diamond are found to be more affected by local charge than expected, which has implications for the use of the defects as quantum sensors.


[Physics 11, 126] Published Wed Dec 12, 2018

doi:10.1103/Physics.11.126
 
 
Arts & Culture: A Journal for the Polymath

2018-12-12 18:00:00.0

Celebrating its 50th anniversary, the internationally recognized journal Leonardo has been—and continues to be—a place for articles that bridge the gap between art and science.


[Physics 11, 128] Published Wed Dec 12, 2018

doi:10.1103/Physics.11.128
 
 
Ripples and Fireworks in Bose-Einstein Condensates

2018-12-11 18:00:00.0

By switching a magnetic field’s direction up and down, researchers interfered matter waves to produce density ripples that led to firework-like jets.


[Physics] Published Tue Dec 11, 2018

 
 
Black Hole Evolution Traced Out with Loop Quantum Gravity

2018-12-10 18:00:00.0

Author(s): Carlo Rovelli

Loop quantum gravity—a theory that extends general relativity by quantizing spacetime—predicts that black holes evolve into white holes.


[Physics 11, 127] Published Mon Dec 10, 2018

doi:10.1103/Physics.11.127
 
 
Twisted Light in a Photonic Chip

2018-12-07 18:00:00.0

Author(s): Philip Ball

Light waves capable of storing quantum information can propagate through a photonic chip waveguide and potentially be used for on-chip computation.


[Physics 11, 125] Published Fri Dec 07, 2018

doi:10.1103/Physics.11.125
 
 
Revamping the Skyrmion Model

2018-12-06 18:00:00.0

Theorists extend a nearly six-decades-old model for the atomic nucleus and use it to predict shape effects that the traditional model misses.


[Physics] Published Thu Dec 06, 2018

 
 
Uneven Turbine Placement Improves Wind Farms

2018-12-05 18:00:00.0

Wind-tunnel experiments show that uneven positioning of the turbines in a wind farm can improve its power output.


[Physics] Published Wed Dec 05, 2018

 
 
Satellite Mishap Provides Chance for Relativity Test

2018-12-04 18:00:00.0

Two satellites erroneously placed in elliptical orbits have been used to test general relativity with unprecedented precision.


[Physics] Published Tue Dec 04, 2018

 
 
A Ranking Scheme for Mass-Transport Predictions

2018-12-03 18:00:00.0

Author(s): Danny Perez

A new theory provides a way to compare the accuracy of different mass-transport calculations, which are widely used to evaluate the performance of materials.


[Physics 11, 123] Published Mon Dec 03, 2018

doi:10.1103/Physics.11.123
 
 
Computing with Wi-Fi Waves

2018-11-30 18:00:00.0

Author(s): Michael Schirber

Experiments demonstrate that a room in a house or office building could act as an analog computer processing the microwaves used for Wi-Fi.


[Physics 11, 124] Published Fri Nov 30, 2018

doi:10.1103/Physics.11.124
 
 
Quantum Entanglement With 10 Billion Atoms

2018-11-29 18:00:00.0

Researchers have experimentally demonstrated two cornerstones of quantum physics—entanglement and Bell inequality violations—with two macroscopic mechanical resonators.


[Physics] Published Thu Nov 29, 2018

 
 
Pinning Down Superheavy Masses

2018-11-28 18:00:00.0

A new measurement technique directly determines the masses of two superheavy isotopes, providing confirmation that previous indirect measurements were correct.


[Physics] Published Wed Nov 28, 2018

 
 
Laser Light Cools Propagating Sound Waves

2018-11-27 18:00:00.0

An optomechanical scheme selectively dampens sound waves traveling in a centimeter-long optical waveguide.


[Physics] Published Tue Nov 27, 2018

 
 
The Plot Thickens for a Fourth Neutrino

2018-11-26 18:00:00.0

Author(s): Joachim Kopp

Confirming previous controversial results, the MiniBooNE experiment detects a signal that is incompatible with neutrino oscillations involving just the three known flavors of neutrinos.


[Physics 11, 122] Published Mon Nov 26, 2018

doi:10.1103/Physics.11.122
 
 
Low Efficiency Spotted in a Molecular Motor

2018-11-21 18:00:00.0

Author(s): Adam G. Hendricks

A detailed study of kinesin—a molecular motor responsible for transporting cellular cargo—shows that it loses 80% of input energy to heat.


[Physics 11, 120] Published Wed Nov 21, 2018

doi:10.1103/Physics.11.120
 
 
Award-Winning Fluid Videos

2018-11-21 18:00:00.0

Videos of shaking blue drops, oscillating flames, and dripping fluids win the top prize of the APS Division of Fluid Dynamics.


[Physics 11, 121] Published Wed Nov 21, 2018

doi:10.1103/Physics.11.121
 
 
Making Mixtures of Magnetic Condensates

2018-11-21 18:00:00.0

A condensate mixing two species of strongly magnetic atoms provides a new experimental window into many-body phenomena.


[Physics] Published Wed Nov 21, 2018

 
 
One-Way Transfer of Magnetic Fields

2018-11-20 18:00:00.0

Researchers have created a material that acts as a magnetic diode, transferring magnetism from one object to another but not the other way around. ?


[Physics] Published Tue Nov 20, 2018

 
 
Dissecting the Mass of the Proton

2018-11-19 18:00:00.0

Author(s): André Walker-Loud

A calculation determines four distinct contributions to the proton mass, more than 90% of which arises entirely from the dynamics of quarks and gluons.


[Physics 11, 118] Published Mon Nov 19, 2018

doi:10.1103/Physics.11.118
 
 
Finding the Ideal Noise-Reducing Network

2018-11-16 18:00:00.0

Author(s): Philip Ball

The structure of a network, such as an electricity grid, can be optimized to reduce the effects of fluctuations in the network’s inputs.


[Physics 11, 119] Published Fri Nov 16, 2018

doi:10.1103/Physics.11.119
 
 
Kilogram Untethered from Earthly Objects

2018-11-16 18:00:00.0

Weighing stuff just got more thrilling, as the world metrological community has now redefined the kilogram—and other quantities—to be based on physical constants.


[Physics 11, 117] Published Fri Nov 16, 2018

doi:10.1103/Physics.11.117
 
 
The International Space Station Turns 20 ?

2018-11-15 18:00:00.0

The ultimate space lab has hosted more than 1500 experiments. Here are five we thought you’d like to know about.


[Physics 11, 116] Published Thu Nov 15, 2018

doi:10.1103/Physics.11.116
 
 
A Laser Steers Electrons Inside Graphene

2018-11-14 18:00:00.0

Orthogonally polarized laser pulses produce a controllable, variable current whose direction can be reversed in less than a femtosecond.


[Physics] Published Wed Nov 14, 2018

 
 
Throwing Dust at Planet Formation

2018-11-13 18:00:00.0

Astrophysicists dropped beads onto clumps of dust to better understand how planets coalesce from particulates.


[Physics] Published Tue Nov 13, 2018

 
 
Cloud Drops Stick Together

2018-11-12 18:00:00.0

Author(s): Rudie P. J. Kunnen

An imaging probe on an airplane observes the clustering of water droplets in clouds, confirming a predicted effect that is correlated with rainfall.


[Physics 11, 114] Published Mon Nov 12, 2018

doi:10.1103/Physics.11.114
 
 
How to Locate a Nanoparticle with Sub-angstrom Precision

2018-11-09 18:00:00.0

Author(s): Phil Dooley

Laser tricks allow nanoparticle position measurements with a record 0.6-angstrom uncertainty, which will be useful in future nanotech devices.


[Physics 11, 115] Published Fri Nov 09, 2018

doi:10.1103/Physics.11.115
 
 
Ion Suppresses Rydberg Creation

2018-11-08 18:00:00.0

Forming an ion in an ultracold atomic cloud delays the subsequent creation of a Rydberg atom until the ion wanders away.


[Physics] Published Thu Nov 08, 2018

 
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