Navigation Links
Manufacturing complex 3-D metallic structures at nanoscale made possible
Date:10/25/2012

The fabrication of many objects, machines, and devices around us rely on the controlled deformation of metals by industrial processes such as bending, shearing, and stamping. Is this technology transferrable to nanoscale? Can we build similarly complex devices and machines with very small dimensions?

Scientists from Aalto University in Finland and the University of Washington in the US have just demonstrated this to be possible. By combining ion processing and nanolithography they have managed to create complex three-dimensional structures at nanoscale.

The discovery follows from a quest for understanding the irregular folding of metallic thin films after being processed by reactive ion etching.

We were puzzled by the strong-width-dependent curvatures in the metallic strips. Usually initially-strained bilayer metals do not curl up this way, explains Khattiya Chalapat from Aalto University.

The puzzle began to unravel when Chalapat noticed, together with Dr. Hua Jiang, that the Ti peak was absent from the EDX spectra of folded Ti/Al bilayers.

Further experiments at the O.V. Lounasmaa Laboratory confirmed that the strips bend upward with strong width-dependent curvatures if the bottom layer of the strips is made more reactive to ions than the top surface.

In nature, similar geometrical effects take place in self-organization directly observable to the human eye. When dandelion flowers bloom, one may try cutting the flower stem into small strips; put them in water, and the strips will fold with observable width-dependent curvatures due to differences in the water absorption between the inside and outside parts of the stem.

Our idea was to find a way to adapt these natural processes to nanofabrication. This led us to an incidental finding that a focused ion beam can locally induce bending with nanoscale resolution.

The technology has various applications in the fabrication of nanoscale devices. The structures are surprisingly resilient: the team found them to be quite sturdy and robust under a variety of adverse conditions, such as electrostatic discharge and heating.

Because the structures are so small, the coupling and the magnitude of typical nanoscale forces acting on them would be commensurately small, reminds Docent Sorin Paraoanu, the leader of the Kvantti research group, Aalto University.

As for applications, we have demonstrated so far that these structures can capture and retain particles with dimensions of the order of a micrometer. However, we believe that we are just scratching the tip of the iceberg: a comprehensive theory of ion-assisted self-assembly processes is yet to be reached, notes Paraoanu.


'/>"/>

Contact: Khattiya Chalapat
khattiya.chalapat@aalto.fi
Aalto University
Source:Eurekalert  

Related biology technology :

1. Life Technologies New State-of-the-Art Manufacturing Facility in China Provides Forensics Labs Rapid Access to World-Leading DNA Testing Solutions
2. Marrone Bio Innovations Breaks Ground on Michigan Manufacturing Facility
3. Labcon Attends White House Business Council Forum on American Manufacturing Competitiveness
4. BioLife Solutions Completes Corporate Facilities Expansion, Build-Out of Additional cGMP Clean Room Manufacturing Suite
5. Research paves the way for accurate manufacturing of complex parts for aerospace and car industries
6. Clean Energy Alliance and the Manufacturing Extension Partnership Announce New Collaboration
7. Healthpoint Biotherapeutics To Create State-of-the-Art Cell Sciences Manufacturing Facility
8. Northeastern University Nanomanufacturing Center Director Ahmed Busnaina to Present Webinar on “The Democratization of Manufacturing”
9. TOKU-E Announces Safer and Faster Dissolving, Dust-Free Grade Sodium Dodecyl Sulfate (SDS) for Electrophoresis and Manufacturing Applications
10. EPSRC announces first recipients of Fellowships in Manufacturing
11. Rising Interest of Big Pharma Creates Immense Growth Potential for Contract Manufacturing Organisations, Says Frost & Sullivan
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Manufacturing complex 3-D metallic structures at nanoscale made possible
(Date:1/23/2017)... 2017  Spherix Incorporated (Nasdaq: SPEX ) ... of technology and monetization of intellectual property, today provided ... Anthony Hayes , Chief Executive Officer of ... to communicate with shareholders about the status of existing ... on other patent assets that fit with our current ...
(Date:1/23/2017)... ... January 23, 2017 , ... Calvert Labs, Inc. announced ... and Senior Director, Safety Pharmacology. Dr. Thomas earned his M.Sc. and Ph.D. ... career as an academic and industry preclinical drug developer spans more than three ...
(Date:1/21/2017)... ... January 20, 2017 , ... ... resource to the healthcare industry ( http://www.gandlscientific.com ), has announced the opening of ... of clinical and scientific consultants and contractors. This is the latest step in ...
(Date:1/21/2017)... -- Bioptix, Inc. (Nasdaq: BIOP ... 14, 2017 the Board of Directors of the Company ... certain employees associated with the September 2016 acquisition of ... on January 16, 2017 and terminations are expected to ... severance benefits in certain circumstances of up to one ...
Breaking Biology Technology:
(Date:12/15/2016)... and BADEN-BADEN, Germany , December 15, ... global financial services provider, today announced an agreement with NuData ... biometrics, to join forces. The partnership will enable clients to ... in compliance with local data protection regulation. ... In order to provide ...
(Date:12/15/2016)... Dec. 14, 2016 "Increase in mobile transactions ... The mobile biometrics market is expected to grow from ... by 2022, at a CAGR of 29.3% between 2016 ... as the growing demand for smart devices, government initiatives, ... "Software component is expected to grow at a ...
(Date:12/7/2016)... Israel , December 7, 2016 BioCatch ... the expansion of its patent portfolio, which grew to over 40 granted ... , , ... its recently filed patent entitled " System, Device, and Method ... technology that enables device makers to forego costly hardware components needed to ...
Breaking Biology News(10 mins):