Navigation Links
Major advance in understanding how nanowires form
Date:3/28/2011

New insights into why and how nanowires take the form they do will have profound implications for the development of future electronic components. PhD student Peter Krogstrup from the Nano-Science Center at the University of Copenhagen is behind the sensational new theoretical model, which is developed in collaboration with researchers from CINAM-CNRS in Marseille.

One of the most important components in future electronic devices will likely be based on nanocrystals, which are smaller than the wavelength of the light our eyes can detect. Nanowires, which are extremely thin nanocrystal wires, are predicted to have a predominant role in these technologies because of their unique electrical and optical properties. Researchers around the world have been working for years to improve the properties of these nanowires. With his research, PhD student Peter Krogstrup at the Niels Bohr Institute, University of Copenhagen has laid the foundations for a greater understanding of nanowires. With that comes the potential for improving their performance, which will bring the research closer to being applied in the development of solar cells and computers. In the latest edition of Physical Review Letters he describes how, under certain conditions, nanowires form a crystal structure that really should not be possible, seen from an energy perspective.

"Crystals will always try to take the form in which their internal energy is as little as possible. It is a basic law of physics and according to it these nanowires should have a cubic crystal structure, but we almost always see that a large part of the structure is hexagonal," explains Peter Krogstrup, who has been working with the theory in recent years.

Catalyst particle shape is the key

In order to explain why and when these crystals become hexagonal, Peter Krogstrup has, as part of his doctoral dissertation, examined the shape of the catalyst particle (a little nano-droplet), which controls the growth of the nanowires. It appears that the shape of the droplet depends on the amount of atoms from group 3 in the periodic system, which make up half of the atoms in the nanowire crystal. The other half, atoms from group 5 in the periodic system, are absorbed by the drop and hence the atoms organize themselves into a lattice, and the nanowire crystal will grow.

"We have shown that it is the shape of the droplet, which determines what kind of crystal structure the nanowires obtain and with this knowledge it will be easier to improve the properties of the nanowires," explains Peter Krogstrup and continues: "The crystal structure has an enormous influence on the electrical and optical properties of the nanowires and you would typically want them to have a certain structure, either cubic or hexagonal. The better nanowires we can make the better electronic components we can make to the benefit of us all," says Peter Krogstrup, whose research is conducted in collaboration with the firm SunFlake A/S, which is located at the Nano-Science Center at the University of Copenhagen. The company is working to develop solar cells of the future based on nanowires.


'/>"/>

Contact: Peter Krogstrup
krogstrup@fys.ku.dk
452-671-5191
University of Copenhagen
Source:Eurekalert

Related biology technology :

1. Tests show LLNL detection instrument can monitor the air for all major terrorist threat substances
2. GlaxoSmithKline and Cellzome Announce Major Strategic Alliance
3. Global Study Shows That Majority of Women with Osteoporosis Do Not Consider Themselves at Higher Risk for Fractures
4. Major Adult Vaccine Clinical Trial for Pneumonia Prevention Begins
5. Water Street Health Care Partners Completes Agreement With Gentiva Health Services to Acquire Majority Ownership of CareCentrix
6. Oridion Signs Agreement With Major US Health Plan Provider for Microstream(R) Capnography
7. Major Independent Study Underscores Utility of deCODE MI(TM) for Better Predicting Risk of Heart Attack, Informing Statin Therapy
8. Promising Clinical Data on Gen-Probes APTIMA(R) HPV Test Presented at Major European Medical Meeting
9. Imaging Diagnostic Systems Exhibits at Major Middle East Health Conference
10. Encorium Group Signs $3.1 Million of New Business Contracts Including an Extension of a Current U.S. Oncology Clinical Trial with a Major Pharmaceutical Company
11. On Third Anniversary, Compendia Bioscience Announces Continued Revenue Growth, Major Long-Term Customer Contracts and Forecasts Profitability
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... , June 27, 2016   Ginkgo Bioworks , ... industrial engineering, was today awarded as one of ... of the world,s most innovative companies. Ginkgo Bioworks ... for the real world in the nutrition, health ... work directly with customers including Fortune 500 companies ...
(Date:6/24/2016)... SAN DIEGO , June 24, 2016 /PRNewswire/ ... that more sensitively detects cancers susceptible to PARP ... individual circulating tumor cells (CTCs). The new test ... of HRD-targeted therapeutics in multiple cancer types. ... therapies targeting DNA damage response pathways, including PARP, ...
(Date:6/24/2016)... ... June 24, 2016 , ... Researchers at the Universita Politecnica ... in people with peritoneal or pleural mesothelioma. Their findings are the subject of a ... , Diagnostic biomarkers are signposts in the blood, lung fluid or tissue of ...
(Date:6/23/2016)... ... June 23, 2016 , ... UAS LifeSciences, one of the ... brand, UP4™ Probiotics, into Target stores nationwide. The company, which has been manufacturing ... to its list of well-respected retailers. This list includes such fine stores as ...
Breaking Biology Technology:
(Date:4/15/2016)...  A new partnership announced today will help ... in a fraction of the time it takes ... life insurance policies to consumers without requiring inconvenient ... Diagnostics, rapid testing (A1C, Cotinine and HIV) and ... weight, pulse, BMI, and activity data) available at ...
(Date:4/14/2016)... BioCatch ™, the global ... the appointment of Eyal Goldwerger as CEO. ... Goldwerger,s leadership appointment comes at a time of significant ... of its platform at several of the world,s largest ... unique cognitive and physiological factors, is a winner of ...
(Date:3/31/2016)... RATON, Florida , March 31, 2016 ... LEGX ) ("LegacyXChange" or the "Company") ... for potential users of its soon to be launched ... video ( https://www.youtube.com/channel/UCyTLBzmZogV1y2D6bDkBX5g ) will also provide ... the use of DNA technology to an industry that ...
Breaking Biology News(10 mins):