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Hot electron solar cell

Hot Electrons Could Double Solar Cell Power Efficiency

Nanotechnology / Nanophysics

created Dec 18, 2009 | popularity 4.2 / 5 (13) | comments 2

Scientists have experimentally verified a theory suggesting that hot electrons could double the output of solar cells. The researchers, from Boston College, have built solar cells that successfully use hot ...


Caltech scientists film photons with electrons

Caltech scientists film photons with electrons

Physics / General Physics

created Dec 16, 2009 | popularity 4.9 / 5 (21) | comments 0

(PhysOrg.com) -- Techniques recently invented by researchers at the California Institute of Technology -- which allow the real-time, real-space visualization of fleeting changes in the structure of nanoscale ...


New silicon-germanium nanowires could lead to smaller, more powerful electronic devices

Nanotechnology / Nanophysics

created Dec 09, 2009 | popularity 5 / 5 (5) | comments 0

(PhysOrg.com) -- Microchip manufacturers have long faced challenges miniaturizing transistors, the key active components in nearly every modern electronic device, which are used to amplify or switch electronic signals.


At Stanford, nanotubes + ink + paper = equal instant battery (w/ Video)

At Stanford, nanotubes + ink + paper = equal instant battery (w/ Video)

Nanotechnology / Nanomaterials

created Dec 07, 2009 | popularity 4.9 / 5 (27) | comments 3

(PhysOrg.com) -- Stanford scientists are harnessing nanotechnology to quickly produce ultra-lightweight, bendable batteries and supercapacitors in the form of everyday paper.


Growing Europe's nanowires

Growing Europe's nanowires

Nanotechnology / Nanophysics

created Dec 16, 2009 | popularity 4.5 / 5 (2) | comments 0

(PhysOrg.com) -- European researchers have developed state-of-the-art nanowire 'growing' technology, opening the way for faster, smaller microchips and creating a promising new avenue of research and industrial ...


Nanowire Formation

Nanowires key to future transistors, electronics

Nanotechnology / Nanophysics

created Nov 26, 2009 | popularity 4.6 / 5 (12) | comments 2

(PhysOrg.com) -- A new generation of ultrasmall transistors and more powerful computer chips using tiny structures called semiconducting nanowires are closer to reality after a key discovery by researchers ...


Running electronics using light

Running electronics using light

Nanotechnology / Nanophysics

created Oct 19, 2009 | popularity 4.3 / 5 (19) | comments 1

(PhysOrg.com) -- "If you open up almost any electronic gadget, you will see various elements that operating using electric circuitries," Nader Engheta tells PhysOrg.com. "Many of them have different functi ...


Self-Programming Hybrid Memristor/Transistor Circuit Could Continue Moore's Law

Self-Programming Hybrid Memristor/Transistor Circuit Could Continue Moore's Law

Technology / Engineering

created Feb 26, 2009 | popularity 4.5 / 5 (42) | comments 8

(PhysOrg.com) -- As researchers strive to increase the density and functionality of circuit elements onto computer chips, one newer option they have is a memory resistor (or “memristor”), the fourth passive ...


Scientists See Smallest-Ever Square Nanotube

Scientists See Smallest-Ever Square Nanotube

Nanotechnology / Nanophysics

created Feb 20, 2009 | popularity 4.6 / 5 (14) | comments 1

(PhysOrg.com) -- Scientists have observed the smallest reported nanotube that has a square cross-section. The structure formed spontaneously and unexpectedly when silver nanowires were stretched and is a reminder ...


'Core-Shell' Silicon Nanowires May Improve Lithium-Ion Batteries

'Core-Shell' Silicon Nanowires May Improve Lithium-Ion Batteries

Nanotechnology / Nanophysics

created Jan 20, 2009 | popularity 4 / 5 (12) | comments 9

(PhysOrg.com) -- Researchers have found a way to incorporate silicon into the structure of rechargeable lithium-ion batteries, which are used to power a wide variety of portable electronic devices, including ...


Research is shattering traditioinal notions of laser limits

Research is shattering traditioinal notions of laser limits

Physics / Optics & Photonics

created Dec 07, 2009 | popularity 5 / 5 (2) | comments 1

Air Force Office of Scientific Research and National Science Foundation-funded professor, Dr. Xiang Zhang has demonstrated at the University of California, Berkeley the world's smallest semiconductor laser, ...


High-Temp Superconducting Nanowire System is First of its Kind

High-Temp Superconducting Nanowire System is First of its Kind

Nanotechnology / Nanophysics

created Nov 26, 2008 | popularity 4.1 / 5 (47) | comments 7

(PhysOrg.com) -- Scientists from the California Institute of Technology have, for the first time, created an array of nanowires that are superconducting at relatively high temperatures. This work, published ...


New 'Nanowelding' Technique for Building Electronic Nanostructures

New 'Nanowelding' Technique for Building Electronic Nanostructures

Nanotechnology / Nanophysics

created Dec 29, 2008 | popularity 5 / 5 (7) | comments 0

(PhysOrg.com) -- Scientists have discovered a way to link nanowires and other nanoobjects into complex nanostructures and circuits by fusing them together with tiny amounts of solder. The researchers, from ...


3-D system based on optical fiber could provide new options for photovoltaics

3-D system based on optical fiber could provide new options for photovoltaics

Nanotechnology / Nanomaterials

created Nov 02, 2009 | popularity 4.4 / 5 (10) | comments 0

Converting sunlight to electricity might no longer mean large panels of photovoltaic cells atop flat surfaces like roofs.


First hyperlens for sound waves created

First hyperlens for sound waves created

Physics / General Physics

created Oct 25, 2009 | popularity 4.7 / 5 (18) | comments 4

Ultrasound and underwater sonar devices could "see" a big improvement thanks to development of the world's first acoustic hyperlens. Created by researchers with the U.S. Department of Energy's Lawrence Berkeley ...