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Building a more versatile laser

Building a more versatile laser

Physics / Optics & Photonics

created Nov 16, 2009 | popularity 4.5 / 5 (19) | comments 0 feature

(PhysOrg.com) -- One of the drawbacks associated with using semiconductor lasers is that many of them can only produce a beam of a single wavelength, and can only send that beam in one direction at a time. ...


New Digital 'Electronics' Concept May Continue Moore's Law

New Digital 'Electronics' Concept May Continue Moore's Law

Nanotechnology / Nanophysics

created Nov 05, 2009 | popularity 4.6 / 5 (76) | comments 12 feature

(PhysOrg.com) -- Computers of the future could be operating not on electrons, but on tiny waves traveling through an electron "fluid," if a new proposal is successful. The new circuit design, recently introduced ...


Atomtronic transistor and diode could advance quantum computing

Physics / Quantum Physics

created Oct 09, 2009 | popularity 4.6 / 5 (24) | comments 5 feature

(PhysOrg.com) -- What if atoms could be used to perform the functions currently the province of electronic devices? The goal of atomtronics is to do just that by creating analogues to the common items found in electronic ...


Could a paper transistor offer an alternative to silicon?

Nanotechnology / Nanophysics

created Sep 22, 2009 | popularity 4.5 / 5 (15) | comments 6 feature

(PhysOrg.com) -- As technology advances, scientists look for ways to enhance electronic applications and devices. Indeed, electronics are getting smaller and more diverse. And as this happens, there is an increased requirement ...


Liquid-OLED Offers More Light-Emitting Possibilities

Liquid-OLED Offers More Light-Emitting Possibilities

Physics / General Physics

created Aug 14, 2009 | popularity 4.8 / 5 (17) | comments 1 feature

(PhysOrg.com) -- As organic light-emitting diodes (OLEDs) are poised to go mainstream in the near future, scientists continue to explore new twists on the technology. Recently, researchers have fabricated ...


Digital quantum battery

Digital Quantum Battery Could Boost Energy Density Tenfold

Physics / Quantum Physics

created Dec 22, 2009 | popularity 4.9 / 5 (39) | comments 16 weblog

(PhysOrg.com) -- Physicists theorize that quantum phenomena could provide a major boost to batteries, with the potential to increase energy density up to 10 times that of lithium ion batteries. According to ...


Scientists improve chip memory by stacking cells

Technology / Semiconductors

created Dec 21, 2009 | popularity 4.5 / 5 (17) | comments 3

(PhysOrg.com) -- Scientists at Arizona State University have developed an elegant method for significantly improving the memory capacity of electronic chips.


Graphene

Researcher Uses Graphene Quilts to Keep Things Cool

Nanotechnology / Nanomaterials

created Dec 21, 2009 | popularity 4.8 / 5 (17) | comments 1

(PhysOrg.com) -- University of California, Riverside Professor of Electrical Engineering and Chair of Materials Science and Engineering Alexander Balandin is leading several projects to explore ways to use ...


New techniques make carbon-based integrated circuits more practical

New techniques make carbon-based integrated circuits more practical

Nanotechnology / Nanophysics

created Dec 09, 2009 | popularity 4.9 / 5 (13) | comments 4

(PhysOrg.com) -- Stanford engineers have built what they believe is a chip with the most advanced computing and storage elements made of carbon nanotubes to date by devising a way to root out the stubborn ...


Fine-tuned

Fine-tuned: A wholly new approach to tuning a laser's frequency

Physics / Optics & Photonics

created Dec 04, 2009 | popularity 4.5 / 5 (10) | comments 2

(PhysOrg.com) -- For more than 30 years, scientists have been trying to harness the power of terahertz radiation. Tucked between microwaves and infrared rays on the electromagnetic spectrum, terahertz rays ...


Researchers demonstrate 100-watt-level mid-infrared lasers

Physics / Quantum Physics

created Dec 01, 2009 | popularity 4.7 / 5 (12) | comments 0

Northwestern University researchers have achieved a breakthrough in quantum cascade laser output power, delivering 120 watts from a single device at room temperature.


Innovation puts next-generation solar cells on the horizon

Chemistry / Materials Science

created Dec 01, 2009 | popularity 4.3 / 5 (30) | comments 12

In a world first, a Monash University-led international research team has developed an innovative way to boost the output of the next generation of solar cells.


Spin polarization achieved in room temperature silicon

Spin polarization achieved in room temperature silicon

Physics / General Physics

created Nov 27, 2009 | popularity 4.8 / 5 (21) | comments 0 weblog

(PhysOrg.com) -- A group in The Netherlands has achieved a first: injection of spin-polarized electrons in silicon at room temperature. This has previously been observed only at extremely low temperatures, ...


Bacteria

Plasma produces KO cocktail for MRSA

Physics / General Physics

created Nov 26, 2009 | popularity 4.9 / 5 (16) | comments 3

MRSA (methicillin-resistant Staphylococcus Aureus) and other drug-resistant bacteria could face annihilation as low-temperature plasma prototype devices have been developed to offer safe, quick, easy and un ...


Selling chip makers on optical computing

Selling chip makers on optical computing

Technology / Semiconductors

created Nov 24, 2009 | popularity 4.6 / 5 (11) | comments 1

(PhysOrg.com) -- Computer chips that transmit data with light instead of electricity consume much less power than conventional chips, but so far, they've remained laboratory curiosities. Professors Vladimir ...