- Medicine - 08:00 Novartis receives EU approval for new Revolade use as first-in- class therapy for patients with severe aplastic anemia
- Astronomy - 08:00 ESA astronaut Andreas Mogensen launched to Space Station
- Environmental Sciences - 07:01 Rapidly warming ocean a threat to Hawaiian coral reefs
- Arts - 07:00 New insights into historic Indigenous trail »
- Medicine - Sep 2 Do nurses and midwives really need a university degree?
- Environmental Sciences - Sep 1 Explaining crocodiles in Wyoming
- Medicine - Sep 1 Providing HIV treatment shown to be cost- saving for companies
- Medicine - Sep 1 Fed to try out Value- Based Insurance Design
- Medicine - Sep 1 Dialysis device developed by Imperial team step closer to patients
- Physics - Sep 1 Researchers land $20 million grant to explore impact of nanotechnology on the environment
- Medicine - Sep 1 Completely paralyzed man voluntarily moves his legs, UCLA scientists report
- Life Sciences - Sep 1 Scientist shares ideas on ageing at TEDx
- Careers - Sep 1 Summer job makes a difference in classroom learning, Stanford scholar says
- Physics - Sep 1 Made from Solar Concentrate
- Mechanical Engineering - Sep 1 Big data battles small insect - Terabytes of mosquito pictures help enhance mosquito netting
- Astronomy - Sep 1 Latest Galileos closing in on launch
Graphene reveals its magnetic personality
Can organic matter behave like a fridge magnet? Scientists from The University of Manchester have now shown that it can.
In a report published , they used graphene, the world’s thinnest and strongest material, and made it magnetic.
Graphene is a sheet of carbon atoms arranged in a chicken wire structure. In its pristine state, it exhibits no signs of the conventional magnetism usually associated with such materials as iron or nickel.
Demonstrating its remarkable properties won Manchester researchers the Nobel Prize in Physics in 2010.
This latest research led by Irina Grigorieva and Professor Sir Andre Geim (one of the Nobel prize recipients) could prove crucial to the future of graphene in electronics.
The Manchester researchers took nonmagnetic graphene and then either ‘peppered’ it with other nonmagnetic atoms like fluorine or removed some carbon atoms from the chicken wire. The empty spaces, called vacancies, and added atoms all turned out to be magnetic, exactly like atoms of, for example, iron.
“It is like minus multiplied by minus gives you plus”, says Irina Grigorieva.
The researchers found that, to behave as magnetic atoms, defects must be far away from each other and their concentration should be low. If many defects are added to graphene, they reside too close and cancel each other’s magnetism. In the case of vacancies, their high concentration makes graphene disintegrate.
Professor Geim said: “The observed magnetism is tiny, and even the most magnetized graphene samples would not stick to your fridge.
“However, it is important to reach clarity in what is possible for graphene and what is not. The area of magnetism in nonmagnetic materials has previously had many false positives.”
"The most likely use of the found phenomenon is in spintronics. Spintronics devices are pervasive, most notably they can be found in computers’ hard disks. They function due to coupling of magnetism and electric current.
“Adding this new degree of functionality can prove important for potential applications of graphene in electronics”, adds Grigorieva.
Last job offers
- Interdisciplinary - 31.8
Swiss Nanoscience Institute PhD Program: 5 positions open
- Medicine/Pharmacology - 31.8
Postdoc Position in Experimental Pathology
- Physics/Materials Science - 31.8
Biophysiker (M/W) mit Schwerpunkt Optik
- Physics/Materials Science - 31.8
Physiker (M/W) Entwicklung optische 3D Sensoren
- Pedagogy/Education Science - 27.8
Wissenschaftliche/n Mitarbeiter/in 80-100%
- Medicine/Pharmacology - 26.8
Medical Writer / Communications Manager
- Social Sciences - 1.9
Assistant Professor in Sociology (0, 8 fte)
- Life Sciences - 1.9
Associate Professor (structural Biologist / systems Biologist)
- Business/Economics - 13.8
Forschungsprofessur (m/w) Logistikoptimierung
- Social Sciences - 13.7
Universitätsprofessorin / Universitätsprofessor für das Fach Instrumental- und Gesangspädagogik (BV gem....
- Pedagogy/Education Science - 1.9
Professur "Pädagogik und Didaktik bei Beeinträchtigungen der körperlichen und motorischen Entwicklung...
- Pedagogy/Education Science - 31.8
- Literature/Linguistics - 1.9
Chong Hua Professorship of Chinese Development
- Mechanical Engineering - 28.8
Assistant / Associate Professor in Aerospace Engineering (2 posts)
- Mathematics - 1.9
Mathematics - Assistant or Associate Professor (AA13362)
- Chemistry - 1.9