Negative refraction - Condensed Matter Theory group
... disputed by some. We have seen that negative signs carry certain implications with them and have hidden consequences easy to confuse with inconsistencies. Perhaps the most forthright criticism came in a Physical Review Letter [9] entitled Wave Refraction in NegativeIndex Media: Always Positive and V ...
... disputed by some. We have seen that negative signs carry certain implications with them and have hidden consequences easy to confuse with inconsistencies. Perhaps the most forthright criticism came in a Physical Review Letter [9] entitled Wave Refraction in NegativeIndex Media: Always Positive and V ...
„Thin Film Electroacoustic Devices“
... Klausurtagung in Pappenheim, 16. – 19. Feb. 2004, Vortrag von Matthias Bickermann the only means to extract energy out of the medium is dielectric resonance. ...
... Klausurtagung in Pappenheim, 16. – 19. Feb. 2004, Vortrag von Matthias Bickermann the only means to extract energy out of the medium is dielectric resonance. ...
Reversing Light: Negative Refraction
... the wires, the region of negative ε occurs at frequencies starting just below 10 GHz, while for SRRs the region of negative µ spans a 1 GHz region starting at ~10.3 GHz. The combined medium exhibits a transmission band that would lie in an opaque frequency region for either metamaterial alone. ...
... the wires, the region of negative ε occurs at frequencies starting just below 10 GHz, while for SRRs the region of negative µ spans a 1 GHz region starting at ~10.3 GHz. The combined medium exhibits a transmission band that would lie in an opaque frequency region for either metamaterial alone. ...
A review of metasurfaces: physics and applications
... Optical devices control and manipulate light by altering its amplitude, phase, and polarization states in a desired manner, which result in steering the beam propagation direction, shaping the wavefront (e.g., focusing), and imparting information for applications such as sensing, imaging and communi ...
... Optical devices control and manipulate light by altering its amplitude, phase, and polarization states in a desired manner, which result in steering the beam propagation direction, shaping the wavefront (e.g., focusing), and imparting information for applications such as sensing, imaging and communi ...
Magnetic Head Pulleys
... crushers, grinders, pulverizers, screens and other processing equipment. tion irec It also helps insure product purity by removing rD o y ve lley Con metal contamination from foods, chemicals, Pu tic e n g Ma plastics and other products. And, best of all, a Dings magnetic head pulley costs nothing t ...
... crushers, grinders, pulverizers, screens and other processing equipment. tion irec It also helps insure product purity by removing rD o y ve lley Con metal contamination from foods, chemicals, Pu tic e n g Ma plastics and other products. And, best of all, a Dings magnetic head pulley costs nothing t ...
Switching terahertz waves with gate-controlled active graphene metamaterials LETTERS *
... charge carrier density by simple electric gating. This charge carrier handling capability in graphene is an order of magnitude larger (1013 –1014 cm−2 ; refs 21,22) than that of conventional 2DEG systems16,20 . Furthermore, the small effective mass of charge carriers in graphene makes it possible to ...
... charge carrier density by simple electric gating. This charge carrier handling capability in graphene is an order of magnitude larger (1013 –1014 cm−2 ; refs 21,22) than that of conventional 2DEG systems16,20 . Furthermore, the small effective mass of charge carriers in graphene makes it possible to ...
THz generation by optical rectification of near
... Optical rectification of femtosecond laser pulses in an electro-optic crystal is an often used method for the generation of broadband THz pulses [1]. A high conversion efficiency in this process is crucial for both THz imaging and spectroscopy applications, because it leads to a high signal-to-noise ...
... Optical rectification of femtosecond laser pulses in an electro-optic crystal is an often used method for the generation of broadband THz pulses [1]. A high conversion efficiency in this process is crucial for both THz imaging and spectroscopy applications, because it leads to a high signal-to-noise ...
Poster Session Program
... Polyethylene naphthalate (PEN) is a kind of crystalline engineering polymer that can be used in adverse environments such as those at high temperatures. Its rystallinity is an important factor controlling its material properties. Regarding this, the present work examines the possibility of using ter ...
... Polyethylene naphthalate (PEN) is a kind of crystalline engineering polymer that can be used in adverse environments such as those at high temperatures. Its rystallinity is an important factor controlling its material properties. Regarding this, the present work examines the possibility of using ter ...
lattice of dielectric particles with double negative response
... In this study, a possibility to realize an isotropic material with negative real parts of both ε and µ using a mixture consisting of two sets of resonating dielectric spheres and cylinders with different radii was considered. A corrected effective medium model for the effective permittivity of a mix ...
... In this study, a possibility to realize an isotropic material with negative real parts of both ε and µ using a mixture consisting of two sets of resonating dielectric spheres and cylinders with different radii was considered. A corrected effective medium model for the effective permittivity of a mix ...
Planoconcave lens by negative refraction of stacked subwavelength
... Taking advantage of previous numerical simulations of the structure dispersion diagram, see the inset of Fig. 1 [21], it follows that a first band of the stacked sub-wavelength hole array structure emerges around the EOT frequency and it clearly shows a negative slope, i.e. phase velocity opposite t ...
... Taking advantage of previous numerical simulations of the structure dispersion diagram, see the inset of Fig. 1 [21], it follows that a first band of the stacked sub-wavelength hole array structure emerges around the EOT frequency and it clearly shows a negative slope, i.e. phase velocity opposite t ...
Spoof Surface Plasmon Polariton Modes Propagating Along
... IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, VOL. 14, NO. 6, NOVEMBER/DECEMBER 2008 ...
... IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, VOL. 14, NO. 6, NOVEMBER/DECEMBER 2008 ...
Metamaterials: a new frontier of science and technology Chem. Soc. Rev 40
... metals is always negative below the plasma frequency. On the other hand, naturally existing materials that exhibit magnetic responses with negative permeability are far less common than those that exhibit electric responses. This is particularly true when we move beyond the gigahertz region, where t ...
... metals is always negative below the plasma frequency. On the other hand, naturally existing materials that exhibit magnetic responses with negative permeability are far less common than those that exhibit electric responses. This is particularly true when we move beyond the gigahertz region, where t ...
Metamaterials: a new frontier of science and technology Chem. Soc. Rev 40
... metals is always negative below the plasma frequency. On the other hand, naturally existing materials that exhibit magnetic responses with negative permeability are far less common than those that exhibit electric responses. This is particularly true when we move beyond the gigahertz region, where t ...
... metals is always negative below the plasma frequency. On the other hand, naturally existing materials that exhibit magnetic responses with negative permeability are far less common than those that exhibit electric responses. This is particularly true when we move beyond the gigahertz region, where t ...
1 CHAPTER 12 PROPERTIES OF MAGNETIC MATERIALS 12.1
... matter) is placed in a magnetic field, a current is induced within the atom by electromagnetic induction. That is, the electrons are caused to orbit around the nucleus, and hence to give the atom a magnetic moment, in such a direction as to oppose the increase in the magnetic field that causes it. T ...
... matter) is placed in a magnetic field, a current is induced within the atom by electromagnetic induction. That is, the electrons are caused to orbit around the nucleus, and hence to give the atom a magnetic moment, in such a direction as to oppose the increase in the magnetic field that causes it. T ...
1 CHAPTER 12 PROPERTIES OF MAGNETIC MATERIALS 12.1
... B and H. To define B, we noted that an electric current situated in a magnetic field experiences a force at right angles to the current, the magnitude and direction of this force depending on the direction of the current. We accordingly defined B as being equal to the maximum force per unit length e ...
... B and H. To define B, we noted that an electric current situated in a magnetic field experiences a force at right angles to the current, the magnitude and direction of this force depending on the direction of the current. We accordingly defined B as being equal to the maximum force per unit length e ...
Magnetism
... contains 8 Fe2+ and 16 Fe3+ ions, and that the unit cell edge length is 0.839 nm The saturation magnetization is equal to the product of the number, N’, of Bohr magnetrons per cubic meter of Fe3O4 and the magnetic moment per Bohr magnetron, mB: Ms = N’mB N’ is the number of Bohr magnetrons per unit ...
... contains 8 Fe2+ and 16 Fe3+ ions, and that the unit cell edge length is 0.839 nm The saturation magnetization is equal to the product of the number, N’, of Bohr magnetrons per cubic meter of Fe3O4 and the magnetic moment per Bohr magnetron, mB: Ms = N’mB N’ is the number of Bohr magnetrons per unit ...
Magnetism f08
... contains 8 Fe2+ and 16 Fe3+ ions, and that the unit cell edge length is 0.839 nm The saturation magnetization is equal to the product of the number, N’, of Bohr magnetrons per cubic meter of Fe3O4 and the magnetic moment per Bohr magnetron, mB: Ms = N’mB N’ is the number of Bohr magnetrons per unit ...
... contains 8 Fe2+ and 16 Fe3+ ions, and that the unit cell edge length is 0.839 nm The saturation magnetization is equal to the product of the number, N’, of Bohr magnetrons per cubic meter of Fe3O4 and the magnetic moment per Bohr magnetron, mB: Ms = N’mB N’ is the number of Bohr magnetrons per unit ...
Magnetic-Instability-Induced Giant Magnetoelectric Coupling
... induced by hole/electron doping, temperature, magnetic field, pressure, and/or lattice strain. For the first time we here show that spin-state transitions can also be induced by an electric field in the case of magnetoelectric materials that display magnetic instabilities. Materials with pure ionic ...
... induced by hole/electron doping, temperature, magnetic field, pressure, and/or lattice strain. For the first time we here show that spin-state transitions can also be induced by an electric field in the case of magnetoelectric materials that display magnetic instabilities. Materials with pure ionic ...
Terahertz radar cross section measurements
... such as RCS reduction and stealth. The necessity of operating on massive objects, such as full-size airplanes or ships, can make those measurements complicated, time consuming, and expensive. Also the size of the platforms makes it impractical to iterate the design and testing phases, allowing only ...
... such as RCS reduction and stealth. The necessity of operating on massive objects, such as full-size airplanes or ships, can make those measurements complicated, time consuming, and expensive. Also the size of the platforms makes it impractical to iterate the design and testing phases, allowing only ...
title - U-System - University of Arizona
... In an experiment conducted by Lorenzo Basano and Pasquale Ottonello, two independent laser sources were able to produce fringes for a time of the order of 1ms. This experiment disproves the second part of Dirac’s famous statement that “interference between two different photons never occurs.1” In ad ...
... In an experiment conducted by Lorenzo Basano and Pasquale Ottonello, two independent laser sources were able to produce fringes for a time of the order of 1ms. This experiment disproves the second part of Dirac’s famous statement that “interference between two different photons never occurs.1” In ad ...
The Electromagnetic Spectrum
... The entire range of electromagnetic waves, including all possible frequencies, is called the electromagnetic spectrum. The electromagnetic spectrum includes radio waves, microwaves, infrared light, ultraviolet light, X rays, and gamma rays. Visible light is a small part of the spectrum in between in ...
... The entire range of electromagnetic waves, including all possible frequencies, is called the electromagnetic spectrum. The electromagnetic spectrum includes radio waves, microwaves, infrared light, ultraviolet light, X rays, and gamma rays. Visible light is a small part of the spectrum in between in ...
Sources and detectors in the microwave region
... Microwave radiation is nowadays advantageously exploited for industrial and domestic applications and it frequently plays an important role in basic and applied science [2]. Due to their appropriate energy, they are applied in electron paramagnetic spectroscopy (EPR). The EPR is sensitive to the mat ...
... Microwave radiation is nowadays advantageously exploited for industrial and domestic applications and it frequently plays an important role in basic and applied science [2]. Due to their appropriate energy, they are applied in electron paramagnetic spectroscopy (EPR). The EPR is sensitive to the mat ...
An introduction to medical imaging with coherent terahertz
... Methods have recently been developed that make use of electromagnetic radiation at terahertz (THz) frequencies, the region of the spectrum between millimetre wavelengths and the infrared, for imaging purposes. Radiation at these wavelengths is non-ionizing and subject to far less Rayleigh scatter th ...
... Methods have recently been developed that make use of electromagnetic radiation at terahertz (THz) frequencies, the region of the spectrum between millimetre wavelengths and the infrared, for imaging purposes. Radiation at these wavelengths is non-ionizing and subject to far less Rayleigh scatter th ...
Nonlinear propagation of electromagnetic waves in negative
... 共LHM兲, i.e., artificially produced materials which are characterized by a negative value of both the dielectric permittivity ⑀ and magnetic permeability , in addition to a negative value of the refraction index n = −冑⑀. Although the original theoretical concept of LHM dates back in the seminal wor ...
... 共LHM兲, i.e., artificially produced materials which are characterized by a negative value of both the dielectric permittivity ⑀ and magnetic permeability , in addition to a negative value of the refraction index n = −冑⑀. Although the original theoretical concept of LHM dates back in the seminal wor ...