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

Scientists reveal breakthrough in optical fiber communications December 21st, 2014

Atom-thick CCD could capture images: Rice University scientists develop two-dimensional, light-sensitive material December 20th, 2014

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Instant-start computers possible with new breakthrough December 19th, 2014

Possible Futures

A novel method for identifying the body’s ‘noisiest’ networks November 19th, 2014

Researchers discern the shapes of high-order Brownian motions November 17th, 2014

VDMA Electronics Production Equipment: Growth track for 2014 and 2015 confirmed: Business climate survey shows robust industry sector November 14th, 2014

Open Materials Development Will Be Key for HP's Success in 3D Printing: HP can make a big splash in 3D printing, but it needs to shore up technology claims and avoid the temptation of the razor/razor blade business model in order to flourish November 11th, 2014

Materials/Metamaterials

Aculon Hires New Business Development Director December 19th, 2014

ORNL microscopy pencils patterns in polymers at the nanoscale December 17th, 2014

Pb islands in a sea of graphene magnetise the material of the future December 16th, 2014

Graphene Applied in Production of Recyclable Electrodes December 13th, 2014

Announcements

Scientists reveal breakthrough in optical fiber communications December 21st, 2014

Atom-thick CCD could capture images: Rice University scientists develop two-dimensional, light-sensitive material December 20th, 2014

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Instant-start computers possible with new breakthrough December 19th, 2014

Aerospace/Space

Lifeboat Foundation gives 2014 Guardian Award to Elon Musk December 16th, 2014

NEI introduces NANOMYTE® SuperAi, a Durable Anti-ice Coating December 4th, 2014

Atmospheric carbon dioxide used for energy storage products December 2nd, 2014

Deep Space Industries and Solid Prototype Announce a Strategic Partnership: Solid Prototype Inc integrates with DSI’s spacecraft design process, helping reduce costs and decrease turnaround time December 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