Best of Last Week – A way to measure variations in the speed of light, a slower universe and plucking hair
Absence of gravitational-wave signal extends limit on knowable universe
Imagine an instrument that can measure motions a billion times smaller than an atom that last a millionth of a second. Fermilab's Holometer is currently the only machine with the ability to take these very ...
New understanding of electromagnetism could enable 'antennas on a chip'
A team of researchers from the University of Cambridge have unravelled one of the mysteries of electromagnetism, which could enable the design of antennas small enough to be integrated into an electronic ...
Unraveling the origin of the pseudogap in a charge density wave compound
The pseudogap, a state characterized by a partial gap and loss of coherence in the electronic excitations, has been associated with many unusual physical phenomena in a variety of materials ranging from cold ...
In situ production of biofunctionalised few-layer defect-free microsheets of graphene
A new method addresses the exfoliation of low-cost graphite using ultrasonic waves in synergy with a surface-active and self-assembling protein extracted from an edible fungus.
Device extracts rare tumor cells using sound
A simple blood test may one day replace invasive biopsies thanks to a new device that uses sound waves to separate blood-borne cancer cells from white blood cells.
Camera chip provides superfine 3-D resolution
Imagine you need to have an almost exact copy of an object. Now imagine that you can just pull your smartphone out of your pocket, take a snapshot with its integrated 3-D imager, send it to your 3-D printer, ...
Researchers study sounds from colliding football helmets as alternative to understanding forces
When football helmets collide, they produce an unmistakable sound. With concerns rising over concussion risks, some parents and others are increasingly concerned about each pop they hear.
Revisiting the mechanics of the action potential
The action potential is widely understood as an electrical phenomenon. However, a long experimental history has documented the existence of co-propagating mechanical signatures.
Light-powered gyroscope is world's smallest: Promises powerful spin on navigation
A pair of light waves - one zipping clockwise the other counterclockwise around a microscopic track - may hold the key to creating the world's smallest gyroscope: one a fraction of the width of a human hair. ...
Tsunami warning issued for parts of Pacific after earthquake
A powerful earthquake rattled the South Pacific nation of Papua New Guinea on Monday, prompting officials to issue a tsunami warning for vast swathes of the Pacific and as far north as Russia.
New insights found in black hole collisions
New research provides revelations about the most energetic event in the universe—the merging of two spinning, orbiting black holes into a much larger black hole.