Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > News > Pressure exerted by sunbeams harnessed for energy: Green Futures: Innovative design draws on the pressure light exerts as a driving force

June 22nd, 2011

Pressure exerted by sunbeams harnessed for energy: Green Futures: Innovative design draws on the pressure light exerts as a driving force

Abstract:
Now a team of researchers at the Rochester Institute of Technology in New York has demonstrated another trick light can do. Take a transparent rod, semicircular in cross-section and thinner than a human hair, and direct a beam at it. As the stream of photons flows through it, the pressure they exert first rotates it until it finds equilibrium and then pushes it, not in the direction of the stream but at a particular angle to it. It's not unlike the way the flow of air round an aerofoil creates 'lift'.

Tiny as this effect is, such a 'lightfoil' could have applications not only in the near-vacuum of space but even on Earth. "The advantage of these rods", explains Ortwin Hess, Professor in Physics and Leverhulme Chair in Metamaterials at Imperial College London, "is that you can use a lot of them together." And on the nano scale, he adds, even very small effects can have a gigantic impact.

So what is it good for? The pressure light exerts is minuscule, and so there are only two contexts in which it can be harnessed: in space, where there is a near-total vacuum and therefore almost no resistance to the force it applies; and in nanotechnology, where the things that need moving have a very small mass.

Source:
guardian.co.uk

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

The George Washington University Opens Science and Engineering Hall, Largest Building of Its Kind in D.C.: Building Represents Significant Investment in Research Programs and Facilities; Commitment to Solve Global Problems, Improve Lives of Millions March 5th, 2015

Anousheh Ansari Wins the National Space Society's Space Pioneer Award for "Service to the Space Community" March 5th, 2015

Enhanced Graphene Components for Next Generation Racing Yacht March 5th, 2015

Get ready for NanoDays! March 5th, 2015

Molecular Machines

Monitoring the real-time deformation of carbon nanocoils under axial loading February 18th, 2015

Stomach acid-powered micromotors get their first test in a living animal January 27th, 2015

Nanoshuttle wear and tear: It's the mileage, not the age January 26th, 2015

Mysteries of ‘Molecular Machines’ Revealed: Phenix software uses X-ray diffraction spots to produce 3-D image December 22nd, 2014

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Strength in numbers: Researchers develop the first-ever quantum device that detects and corrects its own errors March 4th, 2015

Energy-generating cloth could replace batteries in wearable devices March 4th, 2015

Experiment and theory unite at last in debate over microbial nanowires: New model and experiments settle debate over metallic-like conductivity of microbial nanowires in bacterium March 4th, 2015

Magnetic vortices in nanodisks reveal information: Researchers from Dresden and Jülich use microwaves to read out information from smallest storage devices March 4th, 2015

Energy

CiQUS researchers obtain high-quality perovskites over large areas by a chemical method March 4th, 2015

UC research partnership explores how to best harness solar power March 2nd, 2015

Learning by eye: Silicon micro-funnels increase the efficiency of solar cells February 25th, 2015

Magnetic nanoparticles enhance performance of solar cells X-ray study points the way to higher energy yields February 25th, 2015

Aerospace/Space

Anousheh Ansari Wins the National Space Society's Space Pioneer Award for "Service to the Space Community" March 5th, 2015

Launch of the Alliance for Space Development March 1st, 2015

National Space Society and Space Frontier Foundation announce the formation of the Alliance for Space Development February 25th, 2015

Rosetta Team Wins the National Space Society's Science and Engineering Space Pioneer Award February 23rd, 2015

Photonics/Optics/Lasers

Black phosphorus is new 'wonder material' for improving optical communication March 3rd, 2015

Breakthrough in OLED technology March 2nd, 2015

International research partnership tricks the light fantastic March 2nd, 2015

Imec Demonstrates Compact Wavelength-Division Multiplexing CMOS Silicon Photonics Transceiver March 1st, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE