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:6/23/2016)... -- A person commits a crime, and the detective uses ... criminal down. An outbreak of foodborne illness makes ... uses DNA evidence to track down the bacteria that caused ... not. The FDA has increasingly used a complex, cutting-edge technology ... Put as simply as possible, whole genome sequencing is a ...
(Date:6/23/2016)... -- The Biodesign Challenge (BDC), a university competition that asks ... systems and biotechnology, announced its winning teams at the ... York City . The teams, chosen ... MoMA,s Celeste Bartos Theater during the daylong summit. Keynote ... of architecture and design, and Suzanne Lee , ...
(Date:6/23/2016)... ... 23, 2016 , ... In a new case report published today in STEM ... who developed lymphedema after being treated for breast cancer benefitted from an injection of ... dealing with this debilitating, frequent side effect of cancer treatment. , Lymphedema ...
(Date:6/23/2016)... On Wednesday, June 22, 2016, the NASDAQ Composite ... Jones Industrial Average edged 0.27% lower to finish at 17,780.83; ... has initiated coverage on the following equities: Infinity Pharmaceuticals Inc. ... NKTR ), Aralez Pharmaceuticals Inc. (NASDAQ: ARLZ ), ... more about these stocks by accessing their free trade alerts ...
Breaking Biology Technology:
(Date:6/16/2016)... June 16, 2016 The ... expected to reach USD 1.83 billion by 2024, ... Research, Inc. Technological proliferation and increasing demand in ... expected to drive the market growth. ... The development of advanced multimodal techniques for ...
(Date:6/9/2016)... -- Perkotek an innovation leader in attendance control systems is proud to announce the introduction ... to make sure the right employees are actually signing in, and to even control ... ... ... ...
(Date:6/7/2016)... June 7, 2016  Syngrafii Inc. and San ... relationship that includes integrating Syngrafii,s patented LongPen™ eSignature ... This collaboration will result in greater convenience for ... union, while maintaining existing document workflow and compliance ... ...
Breaking Biology News(10 mins):