Navigation Links
New metamaterial allows transmission gain while retaining negative refraction property
Date:11/9/2011

TUCSON, Ariz. -- A new type of active metamaterial that incorporates semiconductor devices into conventional metamaterial structures is demonstrating an ability to have power gain while retaining its negative refraction property, a first in the world of metamaterials research.

"Our simulation and experimental results show that the addition of the battery powered semiconductor diodes not only provided gain, but also maintained the negative index of this kind of metamaterial," said Dr. Hao Xin of the Department of Electrical and Computer Engineering at the University of Arizona. "It is demonstrated, to our knowledge for the first time, that negative index can be obtained with net gain."

Xin says this type of active metamaterial will be very useful not only in designing and achieving new and high performance microwave circuits and antennas, but can also shed light on metamaterial applications at other spectra including optical frequencies.

Documentation of Xin's research, Manuscript LF12974, titled "Active microwave negative-index metamaterial transmission line with gain," by Tao Jiang, Kihun Chang, Li-Ming Si, et al., has been accepted for publication as a letter in Physical Review Letters, a journal of the American Physical Society. Considered one of the foremost physics letters journals, Physical Review Letters provides rapid publication of short reports of significant fundamental research in all fields of physics.

Metamaterials are engineered composite materials designed to provide unique properties that do not exist naturally in materials, such as negative index of refraction, or the ability to bend and redirect light rather than reflect it. Studies of the engineering and processes of these materials may lead to many new phenomena and exciting applications, including advancing the development of near unlimited or "perfect" lenses and new improved types of microwave antennas and circuits for next level wireless communication and sensing.

Dissipated loss has been a major limitation to these applications becoming reality. Xin notes that the results of this research demonstrate that loss in metamaterial can be compensated, an important step towards practical experimental metamaterial with gain in the microwave domain. These data may also shed light on optical gain systems, Xin said.


'/>"/>
Contact: Steve Delgado
520-621-2815
University of Arizona College of Engineering
Source:Eurekalert

Related biology technology :

1. Team develops new metamaterial device
2. £4.9 million to develop metamaterials for invisibility cloaks and perfect lenses
3. Metamaterials could reduce friction in nanomachines
4. Novel metamaterial vastly improves quality of ultrasound imaging
5. Nano squid skin: DOD awards $6M for metamaterials research
6. Strange new twist: Berkeley researchers discover Möbius symmetry in metamaterials
7. Grove School professor leads new metamaterials center
8. A whole new light on graphene metamaterials
9. Optical Materials Express focus issue: Nanoplasmonics and metamaterials
10. New Dual Wavelength X-ray Diffractometer From Oxford Diffraction, Now a Part of Varian, Inc., Allows Increased Throughput for Challenging Single Crystal Analyses
11. New technique allows simultaneous tracking of gene expression and movement
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/20/2017)... ... ... Biologist Dawn Maslar MS has found a biomarker that she claims verifies ... The Neuroscience of Meeting, Dating, Losing Your Mind, and Finding True Love, Maslar found ... step, in my estimation, was to scientifically track the evidence of commitment in men,” ...
(Date:6/20/2017)... ... June 20, 2017 , ... ... of antibody therapeutics from millions-diverse immune repertoires, announces launch of its new ... California. Dave Johnson, PhD, CEO of GigaGen, will present on Surge at the ...
(Date:6/16/2017)... ... June 16, 2017 , ... Cognition Corporation , ... two more sessions of its “From the Helm” Webinar Series. , The ... online templates for design control exercises. Led by David Cronin, Cognition’s CEO, the ...
(Date:6/15/2017)... ... June 15, 2017 , ... The newest ... artist’s journey through creative experimentation and interdisciplinary collaboration. Feature Creep, a solo exhibition ... An opening reception will be held at EKG, located at 3600 Market Street ...
Breaking Biology Technology:
(Date:4/4/2017)... YORK , April 4, 2017   EyeLock ... today announced that the United States Patent and Trademark ... patent broadly covers the linking of an iris image ... same transaction) and represents the company,s 45 th ... latest patent is very timely given the multi-modal biometric ...
(Date:3/30/2017)... March 30, 2017 Trends, opportunities and forecast ... behavioral), by technology (fingerprint, AFIS, iris recognition, facial recognition, ... others), by end use industry (government and law enforcement, ... and banking, and others), and by region ( ... Asia Pacific , and the Rest ...
(Date:3/24/2017)... March 24, 2017 The Controller General of Immigration ... Abdulla Algeen have received the prestigious international IAIR Award for ... Continue Reading ... ... Deputy Controller Abdulla Algeen (small picture on the right) have received the ...
Breaking Biology News(10 mins):