|[November 15, 2012]
Invisible Man Achieved with Fractal Invisibility Cloak
WALTHAM, Mass. --(Business Wire)--
Fractal Antenna Systems, Inc. today disclosed that it has successfully
rendered a man invisible. The firm's new invisibility cloak hid a
subject named Peter at microwaves over a wide bandwidth at high
fidelity. This is the first time any large object has been rendered
invisible and the first time a person has disappeared from view using
invisibility cloak technology.
Subject Peter about to be cloaked at microwaves, the first time a person has been rendered invisible (C) 2012 Fractal Antenna Systems, Inc. Source (News - Alert): Fractal Antenna Systems, Inc.
Invisibility cloaks differ from other types of stealth or camouflage by
diverting waves around an object. The opposing side is visible but the
object is not. They are unpowered and passively convey that view. A
short video of the human invisibility cloak is available at: http://www.youtube.com/watch v=Z_bj5NTnd_0
while additional explanatory video can be found at : http://www.youtube.com/watch v=2BrVxpPYMiA
In August 2012, the firm completed and demonstrated the human-sized
design to coincide with the issuance of the world's first patent (USP
8,253,639) for an invisibility cloak, invented by the firm's CEO, Nathan
Cohen. Only the Cohen invisibility cloak has been recognized by the U.S.
patent office as being new and novel and an actual device that can be
Cohen is an expert in optics and imaging, with a Ph.D. in astrophysics
from Cornell University. He holds 28 U.S. patents, including basic
technologies in fractal antennas and fractal applications in
electronics, real time debluring in ultrasound, and a variety of other
imaging related technologies.
The heart of the invisibility cloak is a close-spaced resonator
arrangement made from almost 10,000 fractal shapes. Such shapes are
built from simple patterns that are scaled. The human-sized cloak was
configured as a large hollow cylinder with the cloak surrounding it as a
thin shell. Subject Peter hunkered down inside to become hidden from
microwave view, and thus realized a dream of countless generations--the
quest to be invisible.
The human invisibility cloak technology was created with modest
resources. "Hundreds of researchers worldwide, and likely close to a
billion dollars, have been spent pursuing this scientific prize,
otherwise unsuccessfully," said Cohen. "With my team, we worked with a
wealth of unique fractal-based knowledge, experience, and American
innovation know-how. We got Jetson's technology on a Flintstones'
Boffin Beginnings And Other Cloaks
The general scientific concept of invisibility cloaks harps back to a
theoretical study by British scientists Ward and Pendry in 1996.
However, neither that study nor later follow ups presented a practical
way to make invisibility cloaks. In 2009, Fractal Antenna Systems was
the first and only research team to achieve cloaking at wide bandwidth
at high fidelity, rendering true invisibility possible. The new human
invisibility cloak hides far bigger objects, is three-dimensional, and
has high fidelity over a large bandwidth. The device is not limited to
working solely in one direction.
These attributes make it a unique and compelling example of a practical
invisibility cloak realized, and the first of its kind.
A recent-diamond shaped 'perfect cloak' reported by other researchers
has failed to achieve the results of the patented invisibility cloak.
Commented Cohen: "If other approaches had been 'perfected' as claimed,
then other researchers would have already cloaked a person. We are 200
times greater in bandwidth; a scaled factor of 10 thinner; and enclose
at least 40,000 times bigger volume. There is no huge mirror contraption
forming the outside. It's like comparing a toy miniature Ferrari
attached to a picture frame, to a real Ferrari."
"The world's top expert on radar has described the fractal invisibility
cloak abilities as 'an impressive first' in the art of cloaking.
Ultimately, fractals are why we succeeded and others failed. It is a
testament to our 'years ahead' proprietary technology in fractal
antennas that make such related, and difficult, problems solvable,"
Uses and Demonstrations
Cohen stresses that the invisibility cloak technology was not designed
specifically for stealth purposes. Cohen also believes infrared
invisibility cloaks in large sizes are presently practical but large
visible light versions will take more time. "Oddly, no one has yet to
present a compelling reason to make a large visible light invisibility
cloak, beyond the fact that it's a nifty thing to do."
Cohen's team has already tested a thin, body-worn invisibility 'vest'
successfully. Such a garment can be used to deflect dangerous waves,
akin to the 'deflector shields' of science fiction.
In order to relax doubts about such an astonishing result, the firm has
been presenting live invisibility cloak demonstrations since August,
including ones at the Boxboro ARRL Convention (August 25), multiple
IEEE (News - Alert)-Boston meetings (October 25), and ones at the Radio Club of America
(November 16), and Yale University (November 20). In addition, a
peer-reviewed scholarly technical article has been accepted in the
journal FRACTALS, and will be published in the coming weeks.
"Seeing is believing," states Cohen.
About Fractal Antenna Systems
Fractal Antenna Systems, Inc. ( http://www.fractenna.com
) supplies products for the world's most demanding wireless, and
electromagnetic applications. Backed by over three dozen U.S., and
international patents, plus dozens of patents pending, Fractal Antenna
Systems is the recognized pioneer in fractal technology, with extensive
research and field experience over 18 years in business. The company is
a privately held and headquartered in Waltham, Massachusetts, USA.
Photos/Multimedia Gallery Available: http://www.businesswire.com/multimedia/home/20121115006634/en/
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