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:10/11/2017)... , ... October 11, 2017 , ... ... (FDA) has granted orphan drug designation to SBT-100, its novel anti-STAT3 (Signal Transducer ... treatment of osteosarcoma. SBT-100 is able to cross the cell membrane and bind ...
(Date:10/10/2017)... , ... October 10, 2017 , ... ... Center’s FirstHand program has won a US2020 STEM Mentoring Award. Representatives of the ... for Excellence in Volunteer Experience from US2020. , US2020’s mission is to change ...
(Date:10/10/2017)... Calif. , Oct. 10, 2017 SomaGenics ... from the NIH to develop RealSeq®-SC (Single Cell), expected ... for profiling small RNAs (including microRNAs) from single cells ... Program highlights the need to accelerate development of approaches ... "New techniques for measuring levels ...
(Date:10/9/2017)... DIEGO , Oct. 9, 2017  BioTech ... biological mechanism by which its ProCell stem cell ... critical limb ischemia.  The Company, demonstrated that treatment ... amount of limbs saved as compared to standard ... the molecule HGF resulted in reduction of therapeutic ...
Breaking Biology Technology:
(Date:3/28/2017)... PUNE, India , March 28, 2017 ... (Analog, IP, Biometrics), Hardware (Camera, Monitors, Servers, Storage Devices), ... Maintenance), Vertical, and Region - Global Forecast to 2022", ... 30.37 Billion in 2016 and is projected to reach ... 15.4% between 2017 and 2022. The base year considered ...
(Date:3/24/2017)... March 24, 2017 The Controller General of Immigration ... Abdulla Algeen have received the prestigious international IAIR Award for ... Continue Reading ... ... Deputy Controller Abdulla Algeen (small picture on the right) have received the ...
(Date:3/23/2017)... The report "Gesture Recognition and Touchless Sensing Market by Technology (Touch-based ... to 2022", published by MarketsandMarkets, the market is expected to be worth USD ... 2022. Continue Reading ... ... ...
Breaking Biology News(10 mins):