From Left Handed Materials to Invisible Cloak: Recent Advances
نویسندگان
چکیده
منابع مشابه
Losses in left-handed materials.
Interest in negative refractive index, or left-handed (LH) materials, has escalated rapidly over the last few years and it now appears that useful LH materials may be realizable in the microwave region. However there is also considerable interest in LH materials for infrared and visible applications. The purpose of this paper is to explore the limitations of LH materials at short wavelengths du...
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Based on the difference between negative refraction and negative refractive index, the phase compensating effect was proposed to distinguish negative refraction in left-handed materials (LHMs) and photonic crystals (PCs). With this effect, perfect lens (PL) of LHM in which both propagating and evanescent waves contribute to the image could be well understood, which is differed from superlens ma...
متن کاملNegative refractive index in left-handed materials.
The real part of the refractive index n(omega) of a nearly transparent and passive medium is usually taken to have only positive values. Through an analysis of a current source radiating into a 1D "left-handed" material (LHM)-where the permittivity and permeability are simultaneously less than zero-we determine the analytic structure of n(omega), demonstrating frequency regions where the sign o...
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In this thesis, Cerenkov radiation of a moving charged particle inside a Left-Handed material (LHM) is studied through both theory and numerical simulations. A LHM is a material whose permittivity and permeability have negative real parts. In the analysis of this thesis, the general theory of Cerenkov radiation was first studied for the unbounded regions filled with LHM. The physical meanings o...
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The development of gun propellants from 2010 to 2016 has been a broad endeavor. Researchers worldwide have examined every facet of energetic materials involved with gun propulsion in efforts to improve both safety and performance. They have looked at individual molecules to maximize energy content, as well as revisiting past molecules and improving upon their original properties. A great deal o...
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ژورنال
عنوان ژورنال: Himalayan Physics
سال: 2013
ISSN: 2542-2545
DOI: 10.3126/hj.v4i0.9420