Navigation Links
New nanoscale parameter by Aalto University resolves dilemmas on silicon property
Date:8/24/2011

The new discovery by Aalto University can have major impact on future nanoscale device design, such as ultraviolet photo detectors and drug delivery.

In bulk size, many materials like silicon are as brittle as glass. In nanoparticle size, the same material can be compressed into half their size without breaking them. The new discovery was made by an international research group led by Professor Roman Nowak.

Atom by atom, the researchers followed the rearrangements resulting from squeezing tiny spheres of silicon. They found that the response of the material varied depending on the degree of deconfinement that contrasts the wellknown "size effect". Shrinking the size of material volumes drives unexpected deformation mechanisms under mechanically induced shape changes.

In its bulk form, silicon is known to display plasticity characterised by phase transformations. However, the research found that progression from a state of relative constraint of the bulk to a less constrained state of the nanoparticle leads to a shift in silicon's mechanical response.

Not a mere peculiarity, the study provides a basis for understanding the onset of incipient plasticity in nanovolumes thus a repeatable vehicle for generating crystal imperfections that dramatically impact functional properties and biocompatibility. The succinct explanation of this topic affects future nano-devices such as ultraviolet photo detectors, lasers on a chip, drug delivery, and biological markers.

The introduction of the "nanoscale confinement" parameter has never explicitly been taken into account so far for size dependent phenomena. The finding resolves dilemmas noted by the earlier studies and offers avenues to a broad range of nananoscale device design. The results resolve a controversy noted in previous studies and the insight will benefit the processing of future nanostructures in a large scale.


'/>"/>

Contact: Professor Roman Nowak
rnowak@cc.hut.fi
358-947-022-667
Aalto University
Source:Eurekalert

Page: 1

Related biology technology :

1. Engineers discover nanoscale balancing act that mirrors forces at work in living systems
2. The nanoscale secret to stronger alloys
3. Berkeley scientists pioneer nanoscale nuclear materials testing capability
4. Nanoscale in the everyday life
5. Penn researchers break light-matter coupling strength limit in nanoscale semiconductors
6. Nanoscale waveguide for future photonics
7. Exotic behavior when mechanical devices reach the nanoscale
8. Pairing quantum dots with fullerenes for nanoscale photovoltaics
9. Scientists engineer nanoscale vaults to encapsulate nanodisks for drug delivery
10. Next-generation chemical mapping on the nanoscale
11. Nanoscale whiskers from sea creatures could grow human muscle tissue
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2016)... ... June 23, 2016 , ... In a new case report published ... how a patient who developed lymphedema after being treated for breast cancer benefitted from ... the paradigm for dealing with this debilitating, frequent side effect of cancer treatment. ...
(Date:6/23/2016)... Andrew D Zelenetz ... Published recently in Oncology ... touchONCOLOGY, Andrew D Zelenetz , discusses the ... is placing an increasing burden on healthcare systems ... With the patents on many biologics expiring, interest ...
(Date:6/23/2016)... Pleasant Prairie, WI (PRWEB) , ... June 23, ... ... sciences consultancy focused on quality, regulatory and technical consulting, provides a free ... webinar is presented on July 13, 2016 at 12pm CT at no charge. ...
(Date:6/23/2016)... , June 23, 2016 ... market research report to its pharmaceuticals section with ... product details and much more. Complete ... across 151 pages, profiling 15 companies and supported ... at http://www.reportsnreports.com/reports/601420-global-cell-culture-media-industry-2016-market-research-report.html . The ...
Breaking Biology Technology:
(Date:5/20/2016)... 2016  VoiceIt is excited to announce its ... By working together, VoiceIt and VoicePass will ... VoicePass take slightly different approaches to voice biometrics, ... and usability. ... partnership. "This marketing and technology partnership ...
(Date:5/12/2016)... WearablesResearch.com , a brand of Troubadour ... from the Q1 wave of its quarterly wearables survey. ... receptivity to a program where they would receive discounts ... company. "We were surprised to see that ... LaColla , CEO of Troubadour Research, "primarily because there ...
(Date:5/3/2016)... Lithuania , May 3, 2016  Neurotechnology, ... released the MegaMatcher Automated Biometric Identification System ... of large-scale multi-biometric projects. MegaMatcher ABIS can process ... accuracy using any combination of fingerprint, face or ... MegaMatcher SDK and MegaMatcher Accelerator ...
Breaking Biology News(10 mins):