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Last updated on April 18, 2014 at 16:31 EDT
Flat Surface Turned Into Spherical Antenna Using New Device

Flat Surface Turned Into Spherical Antenna Using New Device

By Jason Bardi, American Institute of Physics Broadband transformational optics lens, described in Applied Physics Letters, may lead to antenna dishes that are flat or conform to any surface By depositing an array of tiny, metallic,...

Latest Metamaterial Stories

2014-04-14 12:30:52

Broadband Transformational Optics Lens, Described in "Applied Physics Letters," May Lead to Antenna Dishes that are Flat or Conform to Any Surface WASHINGTON, April 14, 2014 /PRNewswire-USNewswire/ -- By depositing an array of tiny, metallic, U-shaped structures onto a dielectric material, a team of researchers in China has created a new artificial surface that can bend and focus electromagnetic waves the same way an antenna does....

2014-04-07 16:21:31

At St. Paul's Cathedral in London, a section of the dome called the Whispering Gallery makes a whisper audible from the other side of the dome as a result of the way sound waves travel around the curved surface. Researchers at Washington University in St. Louis have used the same phenomenon to build an optical device that may lead to new and more powerful computers that run faster and cooler. Lan Yang, PhD, associate professor of electrical and systems engineering, and her collaborators...

2014-03-10 08:35:27

Kymeta now has working prototypes of its flat-panel metamaterials-based antennas, and will demonstrate the electronic beamsteering capabilities to the audience at the SATELLITE 2014 show in Washington D.C. March 11-14, 2014 REDMOND, Wash., March 10, 2014 /PRNewswire/ -- Kymeta Corporation, the company commercializing innovative metamaterials-based flat-panel antennas for satellite communications, today announced that a working prototype of its antenna will be demonstrated in booth...

World's First Acoustic Field Rotator May Help Improve Imaging Capabilities Of Medical Ultrasound Devices
2014-02-26 15:35:43

American Institute of Physics A Chinese-U.S. research team is exploring the use of metamaterials -- artificial materials engineered to have exotic properties not found in nature -- to create devices that manipulate sound in versatile and unprecedented ways. In the journal Applied Physics Letters, the team reports a simple design for a device, called an acoustic field rotator, which can twist wavefronts inside it so that they appear to be propagating from another direction. "Numerous...

2014-02-25 12:25:36

The World's First Acoustic Field Rotator, Described in Applied Physics Letters, May Help to Improve the Imaging Capabilities of Medical Ultrasound Devices WASHINGTON, Feb. 25, 2014 /PRNewswire-USNewswire/ -- A Chinese-U.S. research team is exploring the use of metamaterials -- artificial materials engineered to have exotic properties not found in nature -- to create devices that manipulate sound in versatile and unprecedented ways....

Each side of each constituent cube of the superlens is set with a long, spiraling copper coil
2014-01-11 05:11:00

redOrbit Staff & Wire Reports - Your Universe Online Researchers from Duke University have come up with a method of wirelessly charging electrical devices using low-frequency magnetic fields, according to a study appearing in Friday’s edition of the journal Nature Scientific Reports. “The ability to wirelessly power electrical devices is becoming of greater urgency as a component of energy conservation and sustainability efforts,” the researchers wrote. However, due to health...

2014-01-07 14:19:57

With the emergence of metamaterials and transformation optics in the past few years, invisibility has become a scientific possibility that has attracted sustainable research interest. Recently, a review paper, entitled "Invisibility cloak from forward design to inverse design", published in SCIENCE CHINA Information Sciences, 2013, Vol. 56, reviewed design methodologies and experimental developments of the invisibility cloak from a practical perspective. The recent transition from a forward...

New Hologram Technology Created Using Tiny Nanoantennas
2013-11-15 10:27:00

Purdue University Researchers have created tiny holograms using a "metasurface" capable of the ultra-efficient control of light, representing a potential new technology for advanced sensors, high-resolution displays and information processing. The metasurface, thousands of V-shaped nanoantennas formed into an ultrathin gold foil, could make possible "planar photonics" devices and optical switches small enough to be integrated into computer chips for information processing, sensing and...

Quest For ‘Invisibility Cloak’ Remains Elusive, It So Appears
2013-11-12 07:43:18

redOrbit Staff & Wire Reports - Your Universe Online Limitations in current cloaking technology allow objects to be temporarily concealed at only narrow wavelengths of light or microwaves, while many newer designs actually make things more visible, experts at the University of Texas acknowledged on Monday. Current cloaking devices, which are made of a variety of materials such as planes of glass, work by bending light around objects to make them temporarily invisible. Scientists...

Wireless Device Turns 'Lost' Energy Into Electric Power
2013-11-07 14:28:49

Duke University Metamaterial cells designed by Duke engineers provide electric power as efficiently as solar panels Using inexpensive materials configured and tuned to capture microwave signals, researchers at Duke University's Pratt School of Engineering have designed a power-harvesting device with efficiency similar to that of modern solar panels. The device wirelessly converts the microwave signal to direct current voltage capable of recharging a cell phone battery or other...