Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Metal oxide ‘can transform’

An atomic model of the surface of strontium titanate
An atomic model of the surface of strontium titanate

Abstract:
An international team, including Oxford University scientists, has been investigating what happens to the top layer of atoms on the surface of a material.

Metal oxide ‘can transform’

UK | Posted on February 15th, 2010

The material is strontium titanate: a complex metal oxide that many researchers are interested in because of its ability to split water into hydrogen and oxygen with sunlight and its potential for use in electronic devices.

The team used a variety of techniques including scanning tunneling microscopy (STM) to directly ‘see' the arrangement of surface atoms. Their observations, reported in this week's Nature Materials, reveal a series of structures with a surprisingly close and orderly arrangement.

‘In most materials, when you create a surface, the top layer of atoms rearrange to different positions from those in the rest of the material. This rearrangement of atoms is usually locked into a particular configuration that will minimise the surface energy.' said Dr Martin Castell of Oxford University's Department of Materials, an author of the paper. ‘However, this is not the case for the surface of strontium titanate that we have been studying. This surface forms a whole family of different structures. Chemists would call these structures a homologous series - something that is routinely observed in the bulk of crystals, but not until now on the surface.'

These ‘transformations' could prove very important to researchers hoping to use strontium titanate in order to build new kinds of nanoelectronic devices or to grow thin films.

The report also suggests that the techniques developed by the researchers could make it possible to predict the surface structures of other oxides.

'We have needed to use many different sophisticated experimental and theoretical approaches to solve this problem,' said Dr Castell. 'Our aim is to continue to work closely with our collaborators at Northwestern University in the US to solve related materials problems.'

The research was conducted by a team was led by Dr Martin Castell of Oxford University UK and Professor Laurence Marks and Professor Ken Poeppelmeier of Northwestern University, USA.

A report of the research, ‘A homologous series of structures on the surface of SrTiO3 (110)', is published in this week's Nature Materials.


####

About Oxford University
Welcome to the University of Oxford. People from all walks of life and all parts of the world have been visiting us for nine centuries and we are delighted that via this website you are joining that long tradition. Oxford was the first University in the English-speaking world. Our aim is to remain at the forefront of centres of learning, teaching and research.

Oxford’s remarkable global appeal continues to grow. Students from more than a hundred and forty countries and territories make up a student population of over twenty thousand. Over a third comes from outside the United Kingdom.

For more information, please click here

Copyright © Oxford University

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

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

Aculon Hires New Business Development Director December 19th, 2014

Thin films

'Giant' charge density disturbances discovered in nanomaterials: Juelich researchers amplify Friedel oscillations in thin metallic films November 26th, 2014

New way to move atomically thin semiconductors for use in flexible devices November 13th, 2014

Graphene Frontiers Partners with Madico to Accelerate Material Production: Deal to ignite and fulfill demand for industrial scale graphene film that supports energy, consumer electronics, membranes/filtration, solar and other applications November 12th, 2014

New materials for more powerful solar cells: Major breakthrough in solar energy November 11th, 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

Nanoelectronics

Stacking two-dimensional materials may lower cost of semiconductor devices December 11th, 2014

Defects are perfect in laser-induced graphene: Rice University lab discovers simple way to make material for energy storage, electronics December 10th, 2014

Nanoscale resistors for quantum devices: The electrical characteristics of new thin-film chromium oxide resistors that can be tuned by controlling the oxygen content detailed in the 'Journal of Applied Physics' December 9th, 2014

'Giant' charge density disturbances discovered in nanomaterials: Juelich researchers amplify Friedel oscillations in thin metallic films November 26th, 2014

Announcements

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

Aculon Hires New Business Development Director December 19th, 2014

Tools

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

Switching to spintronics: Berkeley Lab reports on electric field switching of ferromagnetism at room temp December 17th, 2014

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

Energy

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

How does enzymatic pretreatment affect the nanostructure and reaction space of lignocellulosic biomass? December 18th, 2014

Iranian Scientists Use Nanotechnology to Increase Power, Energy of Supercapacitors December 18th, 2014

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

Fuel Cells

Toward a low-cost 'artificial leaf' that produces clean hydrogen fuel December 3rd, 2014

Single-atom gold catalysts may offer path to low-cost production of fuel and chemicals November 28th, 2014

National Synchrotron Light Source II Achieves 'First Light' October 23rd, 2014

Unique catalysts for hydrogen fuel cells synthesized in ordinary kitchen microwave oven October 14th, 2014

Alliances/Partnerships/Distributorships

SUNY Poly NanoCollege Faculty Member Selected as American Physical Society Fellow: SUNY Poly Associate Professor of Nanoscience Dr. Vincent LaBella Recognized for Significant Technological Innovations that Enable Interactive Learning December 17th, 2014

New 'electronic skin' for prosthetics, robotics detects pressure from different directions December 10th, 2014

SEMATECH Reports Significant Progress in EUV Resist Outgas Testing: Technologists from SEMATECH and JSR demonstrate outgas test results that further enable EUV lithography for high-volume manufacturing readiness December 3rd, 2014

Toward a low-cost 'artificial leaf' that produces clean hydrogen fuel December 3rd, 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