Search results for tunnel diode

General Physics Feb 4, 2014

Controlling the emission of light? Size matters

In daily life light is often generated by spontaneous emission, for instance, in lighting, in LCD displays, and in DVD players. In this process, an excited quantum emitter, such as an atom, a molecule, or a quantum dot emits ...

General Physics Feb 3, 2014

Researchers develop first single-molecule LED

The ultimate challenge in the race to miniaturize light emitting diodes (LED) has now been met: a team led by the Institut de Physique et de Chimie des Matériaux de Strasbourg has developed the first ever single-molecule ...

Nanophysics Jan 28, 2014

Researchers move an atom inside a crystal and investigate its function

Nanotechnology is a thriving science. Parts for computers for example are becoming smaller and more precise by the minute. One of the most efficient computers would be the so-called quantum computer. Up to now, its existence ...

General Physics Nov 1, 2013

Designing an acoustic diode

Most people know about ultrasound through its role in prenatal imaging: those grainy, grey outlines of junior constructed from reflected sound waves. A new technology called an "acoustic diode," envisioned by researchers ...

Optics & Photonics Oct 3, 2013

Naked jets of water make a better pollutant detector

When you shine ultraviolet light (UV) through water polluted with certain organic chemicals and bacteria, the contaminants measurably absorb the UV light and then re-emit it as visible light. Many of today's more advanced ...

Materials Science Sep 29, 2013

Wagon-wheel pasta shape for better LED: 'Rotelle' molecules depolarize light more efficiently than 'spaghetti'

One problem in developing more efficient organic LED light bulbs and displays for TVs and phones is that much of the light is polarized in one direction and thus trapped within the light-emitting diode, or LED. University ...

General Physics Sep 4, 2013

Electronics advance moves closer to a world beyond silicon

(Phys.org) —Researchers in the College of Engineering at Oregon State University have made a significant advance in the function of metal-insulator-metal, or MIM diodes, a technology premised on the assumption that the ...

Polymers Aug 9, 2013

New insights into the polymer mystique for conducting charges

For most of us, a modern lifestyle without polymers is unthinkable… if only we knew what they were. The ordinary hardware-store terms we use for them include "plastics, polyethylene, epoxy resins, paints, adhesives, rubber"—without ...

Nanophysics Feb 27, 2013

New patented fabrication technique key to new solar power technology

A novel fabrication technique developed by a University of Connecticut engineering professor could provide the breakthrough technology scientists have been looking for to vastly improve the efficiency of today's solar energy ...

Nanophysics Feb 5, 2013

Patented technique key to new solar power technology

(Phys.org)—A novel fabrication technique developed by UConn engineering professor Brian Willis could provide the breakthrough technology scientists have been looking for to vastly improve today's solar energy systems.

page 11 from 16