Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Photonic chip guides single photons, even when there are bends in the road February 16th, 2018

Arrowhead Receives Regulatory Clearance to Begin Phase 1/2 Study of ARO-HBV for Treatment of Hepatitis B February 15th, 2018

Arrowhead Pharmaceuticals Receives Orphan Drug Designation for ARO-AAT February 15th, 2018

European & Korean Project To Demo World’s First 5G Platform During Winter Games February 15th, 2018

Possible Futures

Photonic chip guides single photons, even when there are bends in the road February 16th, 2018

'Living bandages': NUST MISIS scientists develop biocompatible anti-burn nanofibers February 15th, 2018

Rutgers-Led Innovation Could Spur Faster, Cheaper, Nano-Based Manufacturing: Scalable and cost-effective manufacturing of thin film devices February 14th, 2018

Understanding brain functions using upconversion nanoparticles: Researchers can now send light deep into the brain to study neural activities February 14th, 2018

Materials/Metamaterials

Rutgers-Led Innovation Could Spur Faster, Cheaper, Nano-Based Manufacturing: Scalable and cost-effective manufacturing of thin film devices February 14th, 2018

Graphene on toast, anyone? Rice University scientists create patterned graphene onto food, paper, cloth, cardboard February 13th, 2018

Atomic Flaws Create Surprising, High-Efficiency UV LED Materials: Subtle surface defects increase UV light emission in greener, more cost-effective LED and catalyst materials February 8th, 2018

A new radiation detector made from graphene: A new bolometer exploits the thermoelectric properties of graphene February 6th, 2018

Announcements

Photonic chip guides single photons, even when there are bends in the road February 16th, 2018

Arrowhead Receives Regulatory Clearance to Begin Phase 1/2 Study of ARO-HBV for Treatment of Hepatitis B February 15th, 2018

Arrowhead Pharmaceuticals Receives Orphan Drug Designation for ARO-AAT February 15th, 2018

European & Korean Project To Demo World’s First 5G Platform During Winter Games February 15th, 2018

Aerospace/Space

Joseph N. Pelton named 2017 Lifeboat Foundation Guardian Award Winner February 1st, 2018

New research yields super-strong aluminum alloy January 25th, 2018

Nanotube fibers in a jiffy: Rice University lab makes short nanotube samples by hand to dramatically cut production time January 11th, 2018

Teachers in Space, Inc. wins Dream Project contest January 9th, 2018

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