Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > News > Nanosculptors banish brittleness in smart alloys

February 9th, 2010

Nanosculptors banish brittleness in smart alloys

Abstract:
Microscopic pillars carved out of brittle metal alloys could make future spacecraft parts less prone to snap under high tension.

The alloys, known as metallic glasses, behave much like ceramics: they keep their shape under high loads - in other words, they have a high tensile strength - but snap at lower tensile limits than metals. They are also comparatively light, making them attractive as structural materials, says Julia Greer at the California Institute of Technology in Pasadena, whose team nanosculpted the metallic glasses.

Changing the ratio of surface area to volume can dramatically alter a material's physical properties, so Greer and her colleague Dongchan Jang wondered if metallic glasses would behave more like metals - strong but ductile - at the nanoscale.

To find out, Jang used a focused ion beam to carve an amorphous alloy of the metal zirconium into barbell-shaped pillars 100 nanometres across the shaft.

The beam bombarded the alloy with heavy gallium ions to cut away its structure. "It's very difficult to do," says Greer. "The pillars can topple over if they are too thin, and simply annihilating the pillar with the beam accidentally is possible, too."

Source:
newscientist.com

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Professor J.R.Greer

Related News Press

News and information

Harris & Harris Group to Host Conference Call on Second-Quarter 2014 Financial Results on August 15, 2014 July 23rd, 2014

UCF Nanotech Spinout Developing Revolutionary Battery Technology: Power the Next Generation of Electronics with Carbon July 23rd, 2014

Deadline Announced for Registration in 7th Int'l Nanotechnology Festival in Iran July 23rd, 2014

A Crystal Wedding in the Nanocosmos July 23rd, 2014

Possible Futures

IBM Announces $3 Billion Research Initiative to Tackle Chip Grand Challenges for Cloud and Big Data Systems: Scientists and engineers to push limits of silicon technology to 7 nanometers and below and create post-silicon future July 10th, 2014

Virus structure inspires novel understanding of onion-like carbon nanoparticles April 10th, 2014

Local girl does good March 22nd, 2014

Surface Characteristics Influence Cellular Growth on Semiconductor Material March 12th, 2014

Materials/Metamaterials

Penn Study: Understanding Graphene’s Electrical Properties on an Atomic Level July 22nd, 2014

NUS scientists use low cost technique to improve properties and functions of nanomaterials: By 'drawing' micropatterns on nanomaterials using a focused laser beam, scientists could modify properties of nanomaterials for effective applications in photonic and optoelectric applicat July 22nd, 2014

Steam from the sun: New spongelike structure converts solar energy into steam July 21st, 2014

Carbyne morphs when stretched: Rice University calculations show carbon-atom chain would go metal to semiconductor July 21st, 2014

Announcements

Harris & Harris Group to Host Conference Call on Second-Quarter 2014 Financial Results on August 15, 2014 July 23rd, 2014

UCF Nanotech Spinout Developing Revolutionary Battery Technology: Power the Next Generation of Electronics with Carbon July 23rd, 2014

Deadline Announced for Registration in 7th Int'l Nanotechnology Festival in Iran July 23rd, 2014

A Crystal Wedding in the Nanocosmos July 23rd, 2014

Aerospace/Space

National Space Society Calls For Less US Dependence On Russian Space Technology July 15th, 2014

Motorized Miniature Screw-Actuator Provides 20 nm Resolution, Based on Piezo Effect July 8th, 2014

NSS Pays Tribute to Space Pioneer Frederick I. Ordway III July 7th, 2014

Up in Flames: Evidence Confirms Combustion Theory: Berkeley Lab and University of Hawaii research outlines the story of soot, with implications for cleaner-burning fuels July 1st, 2014

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 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE