Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Advanced Origami: Nanostructures From Flowers to Boxes

Scanning electron microscopic (SEM) images: a) Self-rolling strips of different widths; b) metallic microflower; c) trapped microparticles of lactose in self-organized metallic structures (scale bar is 4 μm).
Scanning electron microscopic (SEM) images: a) Self-rolling strips of different widths; b) metallic microflower; c) trapped microparticles of lactose in self-organized metallic structures (scale bar is 4 μm).

Abstract:
Self-organising complex 3D structures on the nanometer scale hold tremendous promise in wide-ranging nanotechnological devices with important optical and biological applications. One of the key challenges facing researchers, however, lies in developing a fabrication process with extremely high precision, control, and reproducibility.

Advanced Origami: Nanostructures From Flowers to Boxes

Germany | Posted on October 11th, 2012

A team from the Aalto University in Finland in collaboration with the University of Washington has made an important breakthrough utilising a phenomena that can be commonly observed outside the laboratory in the natural world, from the curling of flowers to the opening of seed capsules in ice plants: deformation through stress-relaxation. As reported in Advanced Materials, the researchers (K. Chalapat, N. Chekurov, H. Jiang, J. Li, B. Parviz and G. S. Paraoanu) from Aalto University have demonstrated how two different techniques, namely, reactive ion etching and focused ion beam, can be used to induce stress at defined locations on very nanometer-sized polycrystalline metal films, ultimately enabling them to manipulate the films into the desired complex 3D geometries.

Reactive ion etching, a technique commonly used for cleaning silicon wafers, involves exposure to a low-pressure plasma, in which high-energy ions collide and react with the substrate. When this technique is applied to thin strips of metal film on silicon wafer, this results in the insertion of adatoms into grain boundaries within the metal matrix. This induces a compressive stress, which, upon relaxing of the film, causes it to bend (see the figure to the left and the video at the bottom of the page). Interestingly, the extent of bending (radius of curvature) was found to be dependent on the width of the metal, thus permitting control over the final 3D geometry. Exploiting this concept, the team demonstrated a functional microscopic metallic flower-like structure (see below), with the capacity to trap microparticles (as a proof-of-concept, lactose particle were employed).

Using the more well-known process for fabricating defined nanometer-sized structures, focused ion beam (FIB), which involves bombarding the substrate with a beam of gallium ions, the researchers found that nanometallic cantilevers bent strongly toward the incident direction of the ion beam, effectively due to the compressive stress that results from atomic displacement. Moreover, a theoretical treatment showed that for a given material, the amount of bending is exclusively determined by the fluence of beam, meaning that by controlling the strength of the ion source, one can manipulate materials on the nanometer scale with extremely high precision and control. A remarkable example of this in practice is the fabrication of a nanobox (see video).The remarkable precision and control afforded by the novel methods reported here represents an important nanoengineering advance with far-reaching and exciting future applications.

####

For more information, please click here

Copyright © Wiley-VCH Materials Science Journals

If 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.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Link to the original paper on Wiley Online Library:

Related News Press

News and information

Iranian Researchers Synthesize Stable Ceramic Nanopowders at Room Temperature September 20th, 2014

Arrowhead to Present at BioCentury's NewsMakers in the Biotech Industry Conference September 19th, 2014

SouthWest NanoTechnologies (SWeNT) Receives NIST Small Business Innovation Research (SBIR) Phase 1 Award to Produce Greater than 99% Semiconducting Single-Wall Carbon Nanotubes September 19th, 2014

Toward optical chips: A promising light source for optoelectronic chips can be tuned to different frequencies September 19th, 2014

Videos/Movies

Next-Gen Luxury RV From Global Caravan Technologies Will Offer MagicView Roof and Windshield Using SPD-SmartGlass Technology From Research Frontiers: Recreational Vehicle Manufacturer Global Caravan Technologies (GCT) Features 28 Square Feet of MagicView™ SPD-SmartGlass September 17th, 2014

Scientists refine formula for nanotube types: Rice University theorists determine factors that give tubes their chiral angles September 17th, 2014

RMIT delivers $30m boost to micro and nano-tech August 26th, 2014

The channel that relaxes DNA: Relaxing DNA strands by using nano-channels: Instructions for use August 20th, 2014

Possible Futures

Air Force’s 30-year plan seeks 'strategic agility' August 1st, 2014

IBM Announces $3 Billion Research Initiative to Tackle Chip Grand Challenges for Cloud and Big Data Systems: Scientists and engineers to push limits of silicon technology to 7 nanometers and below and create post-silicon future July 10th, 2014

Virus structure inspires novel understanding of onion-like carbon nanoparticles April 10th, 2014

Local girl does good March 22nd, 2014

Self Assembly

Big Results Require Big Ambitions: Three young UCSB faculty receive CAREER awards from the National Science Foundation September 18th, 2014

Rice rolls 'neat' nanotube fibers: Rice University researchers' acid-free approach leads to strong conductive carbon threads September 15th, 2014

Molecular self-assembly controls graphene-edge configuration September 10th, 2014

Rice chemist wins rare NSF Special Creativity Award: Grant extension will bolster Zubarev's effort to produce gold nanorods September 8th, 2014

Discoveries

Iranian Scientists Separate Zinc Ion at Low Concentrations September 20th, 2014

Iranian Researchers Synthesize Stable Ceramic Nanopowders at Room Temperature September 20th, 2014

Toward optical chips: A promising light source for optoelectronic chips can be tuned to different frequencies September 19th, 2014

New research points to graphene as a flexible, low-cost touchscreen solution September 19th, 2014

Announcements

Iranian Scientists Separate Zinc Ion at Low Concentrations September 20th, 2014

Arrowhead to Present at BioCentury's NewsMakers in the Biotech Industry Conference September 19th, 2014

SouthWest NanoTechnologies (SWeNT) Receives NIST Small Business Innovation Research (SBIR) Phase 1 Award to Produce Greater than 99% Semiconducting Single-Wall Carbon Nanotubes September 19th, 2014

Toward optical chips: A promising light source for optoelectronic chips can be tuned to different frequencies September 19th, 2014

Research partnerships

Biosensors Get a Boost from Graphene Partnership: $5 Million Investment Supports Dozens of Jobs and Development of 300mm Fabrication Process and Wafer Transfer Facility September 18th, 2014

The Pocket Project will develop a low-cost and accurate point-of-care test to diagnose Tuberculosis: ICN2 holds a follow-up meeting of the Project on September 18th - 19th September 18th, 2014

Recruiting bacteria to be technology innovation partners: September 17th, 2014

Carbon Sciences Developing Breakthrough Technology to Mass-Produce Graphene -- the New Miracle Material: Company Enters Into an Agreement With the University of California, Santa Barbara (UCSB) to Fund the Further Development of a New Graphene Process September 16th, 2014

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More














ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE