- About Us
- Career Center
- Nano-Social Network
- Nano Consulting
- My Account
The PhD thesis by Carlos Echeverría 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.
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 Echeverría 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
Zelai Haundi 3, Osinalde Industrialdea
Tel: +34 943 363040
Fax: +34 943 363144
Copyright © CORDISIf 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.
|Related News Press|
News and information
Deep Space Industries and SFL selected to provide satellites for HawkEye 360’s Pathfinder mission: The privately-funded space-based global wireless signal monitoring system will be developed by Deep Space Industries and UTIAS Space Flight Laboratory May 26th, 2016
Revealing the nature of magnetic interactions in manganese oxide: New technique for probing local magnetic interactions confirms 'superexchange' model that explains how the material gets its long-range magnetic order May 25th, 2016
Graphene: Progress, not quantum leaps May 23rd, 2016
Albertan Science Lab Opens in India May 7th, 2016
Researchers demonstrate size quantization of Dirac fermions in graphene: Characterization of high-quality material reveals important details relevant to next generation nanoelectronic devices May 20th, 2016
New type of graphene-based transistor will increase the clock speed of processors: Scientists have developed a new type of graphene-based transistor and using modeling they have demonstrated that it has ultralow power consumption compared with other similar transistor devices May 19th, 2016
First single-enzyme method to produce quantum dots revealed: Biological manufacturing process, pioneered by three Lehigh University engineers, produces equivalent quantum dots to those made chemically--but in a much greener, cheaper way May 9th, 2016
Superfast light source made from artificial atom April 28th, 2016
Attosecond physics: A switch for light-wave electronics May 24th, 2016
We’ll Leave the Lights On For You: Photonics advances allow us to be seen across the universe, with major implications for the search for extraterrestrial intelligence, says UC Santa Barbara physicist Philip Lubin - See more at: http://www.news.ucsb.edu/2016/016805/we-ll-leave-li May 17th, 2016