Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Do-it-yourself invisibility with 3-D printing

Abstract:
Seven years ago, Duke University engineers demonstrated the first working invisibility cloak in complex laboratory experiments. Now it appears creating a simple cloak has become a lot simpler.

Do-it-yourself invisibility with 3-D printing

Durham, NC | Posted on May 6th, 2013

"I would argue that essentially anyone who can spend a couple thousand dollars on a non-industry grade 3-D printer can literally make a plastic cloak overnight," said Yaroslav Urzhumov, assistant research professor in electrical and computer engineering at Duke's Pratt School of Engineering.

Three-dimensional printing, technically known as stereolithographic fabrication, has become increasingly popular, not only among industry, but for personal use. It involves a moving nozzle guided by a computer program laying down successive thin layers of a material -- usually a polymer plastic -- until a three-dimensional object is produced.

Urzhumov said that producing a cloak in this fashion is inexpensive and easy. He and his team made a small one at Duke which looks like a Frisbee™ disc made out of Swiss cheese. Algorithms determined the location, size and shape of the holes to deflect microwave beams. The fabrication process takes from three to seven hours.

The results of Urzhumov's experiments were published online in the journal Optics Letters, and the team's research was supported by the U.S. Army Research Office through a Multidisciplinary University Research Initiative grant.

Just like the 2006 cloak, the newer version deflects microwave beams, but researchers feel confident that in the not-so-distant future, the cloak can work for higher wavelengths, including visible light.

"We believe this approach is a way towards optical cloaking, including visible and infrared," Urzhumov said. "And nanotechnology is available to make these cloaks from transparent polymers or glass. The properties of transparent polymers and glasses are not that different from what we have in our polymer at microwave frequencies."

The disk-like cloak has an open area in its center where the researchers placed an opaque object. When microwave beams were aimed at the object through the side of the disk, the cloak made it appear that the object was not there.

"The design of the cloak eliminates the 'shadow' that would be cast, and suppresses the scattering from the object that would be expected," said Urzhumov. "In effect, the bright, highly reflective object, like a metal cylinder, is made invisible. The microwaves are carefully guided by a thin dielectric shell and then re-radiated back into free space on the shadow side of the cloak."

Urzhumov said that theoretically, the technique can be used to create much larger devices.

"Computer simulations make me believe that it is possible to create a similar polymer-based cloaking layer as thin as one inch wrapped around a massive object several meters in diameter," he said. "I have run some simulations that seem to confirm this point."

###

Other members of the team included Duke's Nathan Landy and David R. Smith, as well as Tom Driscoll and Dimitri Basov at the University of California - San Diego.

CITATION: "Thin Low-Loss Dielectric Coatings for Free-Space Cloaking," Y. Urzhumov, et al. Optics Letters. Online May 3, 2013. DOI 10.1364/OL.38.001606.

####

For more information, please click here

Contacts:
This is Yaroslav Urzhumov.



Credit: Duke University Photography

Copyright © Duke University

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 News Press

News and information

'Microcombing' creates stronger, more conductive carbon nanotube films May 5th, 2015

Testing Facility for Graphene Enhanced Composite Pipes May 5th, 2015

Arrowhead Completes Dosing Healthy Volunteers and Initiates Transition to Patients in Phase 1 Study of ARC-AAT May 5th, 2015

Silicon Storage Technology and GLOBALFOUNDRIES Announce Qualification of Automotive Grade 55nm Embedded Flash Memory Technology May 5th, 2015

3D printing

New class of 3D-printed aerogels improve energy storage April 22nd, 2015

Camera chip provides superfine 3-D resolution: New imaging technology fits on a tiny chip and, from a distance, can form a high-resolution 3-dimensional image of an object on the scale of micrometers April 4th, 2015

'Additive manufacturing' could greatly improve diabetes management March 17th, 2015

The George Washington University Opens Science and Engineering Hall, Largest Building of Its Kind in D.C.: Building Represents Significant Investment in Research Programs and Facilities; Commitment to Solve Global Problems, Improve Lives of Millions March 5th, 2015

Discoveries

Improving organic transistors that drive flexible and conformable electronics: UMass Amherst scientists advance understanding of strain effects on performance May 5th, 2015

New chip architecture may provide foundation for quantum computer: Researchers at the Georgia Tech Research Institute have developed a microfabricated ion trap architecture that holds promise for increasing the density of qubits in future quantum computers May 5th, 2015

'Microcombing' creates stronger, more conductive carbon nanotube films May 5th, 2015

Iranian Scientists Present Model to Study Mechanical Vibrations of Structures Containing Nanocomposites May 5th, 2015

Announcements

'Microcombing' creates stronger, more conductive carbon nanotube films May 5th, 2015

Testing Facility for Graphene Enhanced Composite Pipes May 5th, 2015

Arrowhead Completes Dosing Healthy Volunteers and Initiates Transition to Patients in Phase 1 Study of ARC-AAT May 5th, 2015

Silicon Storage Technology and GLOBALFOUNDRIES Announce Qualification of Automotive Grade 55nm Embedded Flash Memory Technology May 5th, 2015

Military

From brittle to plastic in 1 breath: Rice University theorists show environments can alter 2-D materials' basic properties May 4th, 2015

No Hogwarts invitation required: Invisibility cloaks move into the real-life classroom: A new solid-state device can demonstrate the physical principles of invisibility cloaks without special equipment or magic spells April 30th, 2015

Chemists strike nano-gold: 4 new atomic structures for gold nanoparticle clusters: Research builds upon work by Nobel Prize-winning team from Stanford University April 28th, 2015

Two-dimensional semiconductor comes clean April 27th, 2015

Printing/Lithography/Inkjet/Inks

Northwestern scientists develop first liquid nanolaser: Technology could lead to new way of doing 'lab on a chip' medical diagnostics April 25th, 2015

New class of 3D-printed aerogels improve energy storage April 22nd, 2015

Printing Silicon on Paper, with Lasers April 21st, 2015

Advances in molecular electronics: Lights on -- molecule on: Researchers from Dresden and Konstanz succeed in light-controlled molecule switching April 20th, 2015

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