This diagram maps out atomic motion in separate phonon modes. At left (“LO” represents a longitudinal optical mode), selenium atoms exhibit a clockwise rotation while tungsten atoms stand still. At right (“LA” represents a longitudinal acoustic mode), tungsten atoms exhibit a clockwise rotation while selenium atoms rotate in a counterclockwise direction. Credit: Hanyu Zhu, et al.

Experiments confirm the first chiral phonon that could enable exotic forms of electronics. Berkeley Lab has found the first evidence that a shaking motion in the structure of an atomically thin (2D) material possesses a naturally occurring circular rotation...

Bacteria play a critical role in the development of colon cancer, new research suggests. Credit: Elizabeth Cook

Patients with an inherited form of colon cancer harbor two bacterial species that collaborate to encourage development of the disease, and the same species have been found in people who develop a sporadic form of colon cancer, a study led by a Johns Hopkins Bloomberg~Kimmel Institute for Cancer Immunotherapy research team finds. A second study in mice published concurrently by the same researchers shows a possible mechanism behind how one of these species spurs a specific type of immune response, promoting – instead of inhibiting – the formation of malignant tumors...

Image of the gravitational lens RX J1131-1231 galaxy with the lens galaxy at the center and four lensed background quasars. It is estimated that there are trillions of planets in the center elliptical galaxy in this image. Credit: University of Oklahoma

A University of Oklahoma astrophysics team has discovered for the first time a population of planets beyond the Milky Way galaxy. Using microlensing – an astronomical phenomenon and the only known method capable of discovering planets at truly great distances from the Earth among other detection techniques – OU researchers were able to detect objects in extragalactic galaxies that range from the mass of the Moon to the mass of Jupiter.

Xinyu Dai, professor in the Homer L...

Schematic of the structure and the fabrication process of a spine-like battery. (a) Schematic illustration of bio-inspired design, the vertebrae correspond to thick stacks of electrodes and soft marrow corresponds to unwound part that interconnects all the stacks. (b) the process to fabricate the spine-like battery, multilayers of electrodes were first cut into designed shape, then strips extending out were wound around the backbone to form spine-like structure. Credit: Yuan Yang/Columbia Engineering

Shaped like a spine, new design enables remarkable flexibility, high energy density, and stable voltage no matter how it is flexed or twisted...