Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Study of behaviour of semiconductor crystals of size less than 100 nanometres

Abstract:
The PhD thesis by Carlos Echeverrķa Arrondo, Doctor in Physics from the Public University of Navarre and entitled "On doped semiconductor quantum dots and magnetic nanowires", studied the behaviour and properties of nanometric-scale semiconductor crystals.

Study of behaviour of semiconductor crystals of size less than 100 nanometres

Spain | Posted on October 29th, 2010

The thesis explains in a theoretical manner, the properties of doped quantum points (with the presence of impurities) and of magnetic nanowires. Notable amongst the main conclusions was that the electronic properties of the nanocrystals with magnetic impurities depend on where they are located. It is possible that the magnetic properties of the quantum points change drastically in terms of size i.e. reducing their size while light is also capable of modifying the magnetism of the nanocrystals doped with manganese. So far, unknown crystalline geometry was also discovered which has low nanowires dimensions.

"The study of the nanometric structures is important in their physical behaviour which , differ from macroscopic solids to which we are accustomed", pointed out the researcher. Given their low dimensionality, the properties of nanocrystals and nanowires are often surprising and, at the same time, promising. This is true in respect to the development of new devices for example, nanomagnetism and optoelectronics. These two fields are dealt with in this PhD thesis". The theoretical study of nanostructures acts, on the one hand, to explain phenomena already observed experimentally and, on the other, to provide clues to the experimental physics involved with the new properties which will be of great interest to study as well as in regard to the results anticipated".

In respect to the possibility of manipulating the spin of a quantum point using light, "this result shows us, for example, that these nanocrystals will act as bits of information or devices carrying out logical operations or for systems for high-capacity storage. These nanoparticles could even operate for quantum computation, anticipating fantastic calculation speeds, unimaginable today".

The interest aroused by nanoscience and nanotechnology spurred Dr Echeverrķa was to study the behaviour of semiconductor crystals when their size is reduced to less than one hundred nanometres (a nanometre is a millionth part of a millimetre). "The possibilities of nanoscience and nanotechnology are wide ranging", he pointed out. "Magnetic properties at these dimensions can change drastically when the size of the particles is reduced and, in our investigation, we have shown that light is also capable of modifying the magnetism of nanocrystals".

He explained, "when quantum points or nanoparticles are involved, we are talking about nanocrystals of "zero" dimensions, while those of one dimension are known as nanowires. Thus, the properties of quantum points and nanowires not only depend on nanometric size but also on their shape and the presence of impurities".

For more information: www.basqueresearch.com/berria_irakurri.asp?Berri_Kod=2946&hizk=I

####

For more information, please click here

Contacts:
Amaia Portugal
Elhuyar Foundation
Zelai Haundi 3, Osinalde Industrialdea
20170 Usurbil
Spain

Tel: +34 943 363040
Fax: +34 943 363144

Copyright © CORDIS

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

Nanoparticles present sustainable way to grow food crops May 1st, 2016

Searching for a nanotech self-organizing principle May 1st, 2016

Clay nanotube-biopolymer composite scaffolds for tissue engineering May 1st, 2016

Cooling graphene-based film close to pilot-scale production April 30th, 2016

Possible Futures

Clay nanotube-biopolymer composite scaffolds for tissue engineering May 1st, 2016

Cooling graphene-based film close to pilot-scale production April 30th, 2016

Personal cooling units on the horizon April 29th, 2016

Exploring phosphorene, a promising new material April 29th, 2016

Academic/Education

JPK reports on the use of a NanoWizard AFM system at the University of Kaiserslautern to study the interaction of bacteria with microstructured surfaces April 28th, 2016

The Ottawa Hospital Research Institute uses the ZetaView from Particle Metrix to study membrane microparticles as potential biomarkers for underlying diseases April 12th, 2016

FEI Partners with Five Pharmaceutical Companies, the Medical Research Council and the University of Cambridge to form Cryo-EM Research Consortium April 5th, 2016

SUNY Poly, in Collaboration with the George Washington School of Medicine and Health Sciences and Stony Brook University, Demonstrates Pioneering Method to Visualize and Identify Engineered Nanoparticles in Tissue March 25th, 2016

Nanoelectronics

Cooling graphene-based film close to pilot-scale production April 30th, 2016

Exploring phosphorene, a promising new material April 29th, 2016

With simple process, UW-Madison engineers fabricate fastest flexible silicon transistor April 21st, 2016

All powered up: UCI chemists create battery technology with off-the-charts charging capacity April 21st, 2016

Announcements

Nanoparticles present sustainable way to grow food crops May 1st, 2016

Clay nanotube-biopolymer composite scaffolds for tissue engineering May 1st, 2016

Cooling graphene-based film close to pilot-scale production April 30th, 2016

Personal cooling units on the horizon April 29th, 2016

Quantum Dots/Rods

Superfast light source made from artificial atom April 28th, 2016

Quantum dots enhance light-to-current conversion in layered semiconductors: Research demonstrates promise of a new approach for improving solar cells, photocatalysts, light sensors, and other optoelectronic devices April 11th, 2016

Revealing the ion transport at nanoscale March 30th, 2016

Sweet 'quantum dots' light the way for new HIV and Ebola treatment March 15th, 2016

Photonics/Optics/Lasers

Exploring phosphorene, a promising new material April 29th, 2016

Researchers create a first frequency comb of time-bin entangled qubits: Discovery is a significant step toward multi-channel quantum communication and higher capacity quantum computers April 28th, 2016

Hybrid nanoantennas -- next-generation platform for ultradense data recording April 28th, 2016

NREL theory establishes a path to high-performance 2-D semiconductor devices April 27th, 2016

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







Car Brands
Buy website traffic