Browse Physics

A new technique for powering medical implants wirelessly could allow them to shrink to sub-millimeter sizes in the future, according to theory and simulations.

Combining two spin-dependent effects generates a microwave signal that can be easily read to study the magnetization dynamics in a device with novel geometry.

Time-reversing the signals generated by a nonlinear element could form the basis of a new secure communications protocol in the midst of chaotic waves.

Nanoscale engineering of multiferroic thin films enables electric control of a device’s interface magnetism, thus offering a promising prospective for ultralow power spintronics.

Microwave signals in an entangled state can be generated and then spatially separated on a single chip, enabling quantum communication with microwave technology.

Experimental data in combination with calculations show why some organic semiconductors have intrinsically different mobilities for electrons and holes.

New experiments on an organic ferroelectric verify that its electric polarization is driven primarily by an electron shift, rather than the ion shift that characterizes most other ferroelectrics.

Specially designed waveguides act like conduits for high-frequency displacement currents.

Researchers propose a way to transfer quantum information between ions and electronic circuits, opening up new options for quantum computation.

An electronic circuit provides a simple analog for a special class of quantum mechanical Hamiltonians.

Improvements in a new device suggest that electron spins could be harnessed to make a better clock for silicon chips.

A quantum mechanical effect seems to explain amplification in a component that might replace transistors in nanoscale circuits.

A proposed ‘thermal rectifier’ would conduct heat preferentially in one direction.

A single-atom bridge proves that the irreducible unit of current between two superconductors can be many times the charge of the electron.

A new theory will help researchers understand and harness a new low-cost technique for getting electrons to leave a surface. An improved flat panel display may be the result.

By ‘writing’ and ‘erasing’ molecule-sized bits of a thin organic film, physicists have demonstrated its potential to become the next high-density storage medium.