Design of tunable biperiodic graphene metasurfaces
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In this thesis, the electronic structures of low-dimensional carbon allotropes have been studied. In particular, the spatially-resolved photocurrent responses of devices comprising carbon nanostructures were investigated through scanning photocurrent micro ...
A design technique for implementing a low-voltage and low-power quadrature oscillator operating at radio frequencies is proposed. The oscillator utilises a cascade of four stages of capacitive-source amplifiers to generate balanced quadrature signals. The ...
In this thesis we study the properties of optical wire antennas. As experimental method for our investigations we use apertureless near-field optical microscopy. This technique achieves high spatial resolution well beyond the diffraction limit by utilizing ...
The electrodynamics of a high-T(c) superconductor with a network of numerous weak links (the Josephson medium) in the low-field mixed state have been analysed. The AC response to an electromagnetic wave is governed by the motion of vortices of very large s ...
In order to achieve control of HV cables after repair or preventive maintenance measurements should be performed on the installed cables. The authors present numerical studies on the wave reflection in the cable using the EM transients program. They show t ...
The endothermic nuclear reaction between thermal tritons and high-energy protons can represent an important contribution to the total neutron yield in tokamak plasmas heated by radio-frequency waves, as the first JET experiments have demonstrated (see Mant ...
We discuss recent theoretical results on the polariton parametric amplification from semiconductor microcavities in the strong exciton-photon coupling regime. A microscopic treatment of the interacting polariton system leads to a clear description of the p ...
Electromagnetic wave propagation effects can give rise to important limitations for processing uniformity in large area, radio-frequency (rf) capacitive plasma reactors. The electromagnetic wavefield solution is derived for a capacitive, high-frequency, cy ...