Metamaterials
9/12/2008
“A metamaterial (or meta
material) is a material which gains its properties from its structure rather
than directly from its composition. To distinguish metamaterials from other
composite materials, the metamaterial label is usually used for a
material which has unusual properties. The term was coined in 1999 by Rodger M.
Walser of the University of Texas at Austin. He defined metamaterials as
macroscopic composites having a manmade, three-dimensional, periodic cellular
architecture designed to produce an optimized combination, not available in
nature, of two or more responses to specific excitation.”
Wikipedia:
http://en.wikipedia.org/wiki/Metamaterial (12/6/2008)
“Electromagnetics researchers
often use the term, quite narrowly, for materials which exhibit negative
refraction. W.E. Kock developed the first metamaterials in the late 1940s with
metal-lens antennae and metallic delay lenses.”
Wikipedia:
http://en.wikipedia.org/wiki/Metamaterial (12/6/2008)
Warning: Sometimes the older links no longer work. Go to the US Patent number search page, copy the Patent number into the search box and search. For the articles, use your browser to go the Journal site.
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Notes
“Metamaterials are of particular
importance in electromagnetism (especially optics and photonics). They show
promise for a variety of optical and microwave applications such as new types of
beam steerers, modulators, band-pass filters, lenses, microwave couplers, and
antenna radomes.”
Wikipedia:
http://en.wikipedia.org/wiki/Metamaterial (12/6/2008)
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“A metamaterial affects
electromagnetic waves by having structural features smaller than the wavelength
of the electromagnetic radiation it interacts with. For instance, if a
metamaterial is to behave as a homogeneous material accurately described by an
effective refractive index, its features must be much smaller than the
wavelength. For visible light, which has wavelengths of less than one micrometre
typically (560 nanometres for sunlight), the structures are generally half this
size or smaller; i.e., less than 280 nanometres. For microwave radiation, the
structures need only be on the order of one decimetre. Microwave frequency
metamaterials are almost always artificial, constructed as arrays of
electrically conductive elements (such as loops of wire) which have suitable
inductive and capacitive characteristics.”
Wikipedia:
http://en.wikipedia.org/wiki/Metamaterial (12/6/2008)
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“Metamaterials usually consist of
periodic structures, and thus have many similarities with photonic crystals and
frequency selective surfaces. However, these are usually considered distinct
from metamaterials, as their features are of similar size to the wavelength at
which they function, and thus cannot be approximated as a homogeneous material.”
Wikipedia:
http://en.wikipedia.org/wiki/Metamaterial (12/6/2008)
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Review Articles
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US Patents
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Journal Articles
11/21/2008
Fabrication of negative index materials using dielectric and
metallic composite route
(# 184103)
Applied Physics Letters 93 #18 (2008)
Abstract
A dual-resonant terahertz metamaterial based on single-particle
electric-field-coupled resonators
(# 191110)
Applied Physics Letters 93 #19 (2008)
Abstract
Optical activity in extrinsically chiral metamaterial
(# 191911)
Applied Physics Letters 93 #19 (2008)
Abstract
11/7/2008
Multiple Pass-Band Optical Left-Handed
Metamaterials Based on Random Dendritic Cells
(p 3523-3528)
Advanced Functional Materials 18 #21 (2008)
Abstract
10/31/1008
Tunable transmission and harmonic generation
in nonlinear metamaterials
(# 161903)
Applied Physics Letters 93 #16 (2008)
Abstract
Observation of coupled-cavity structures in metamaterials
(# 121910)
Applied Physics Letters 93 #12 (2008)
Abstract
10/3/2008
Negative index metamaterials based on metal-dielectric nanocomposites for
imaging applications
(# 123117)
Applied Physics Letters 93 #12 (2008)
Abstract
9/26/2008
Electromagnetic induction in metamaterials
(107-110 )
Applied Physics B Lasers and Optics 93 #1 (2008)
9/19/2008
Phase diagram of lossy negative index
metamaterials
(# 101106)
Applied Physics Letters 93 #10 (2008)
Abstract
Low-loss left-handed metamaterials at millimeter waves
(# 083104)
Applied Physics Letters 93 #8 (2008)
Abstract
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Roger D. Corneliussen
Editor
Telephone: 610 883 0055
rcorneliussen@4spe.org
www.maropolymeronline.com
Copyright 2009 by Roger D. Corneliussen