In this article, the diocotron modes developing in a coaxial diode and resonant magnetron forming six-vane A6 relativistic both fed by split cathode are studied Particle-in-Cell simulations. The is novel type of which sustains column longitudinally oscillating electrons (smooth bore) or over non-emitting axial conductor. connection between longitudinal oscillatory dynamics mode development, as ...

A frequency agile triple band microstrip antenna using defected ground structure for WLAN/WiMAX application is presented, in which frequency agility is electronically achieved by changing the bias voltage of varactor diode. A defected ground structure rectangular patch with dual inverted L-shaped fed with a cross shaped strip line is used to achieve multiple bands. Simulated results are validat...

We introduce and report recent developments on a novel five port optoelectronic voltage controlled oscillator consisting of a resonant tunneling diode (RTD) optical-waveguide integrated with a laser diode. The RTD-based optoelectronic oscillator (OEO) has both optical and electrical input and output ports, with the fifth port allowing voltage control. The RTD-OEO locks to reference radio-freque...

Background and Aim: Bleaching can improve the color of restorative materials and resolve problems related to discoloration or color mismatch. This study evaluated the effect of in-office bleaching method in conjunction with two different laser wavelengths on color change of two types of glass-ionomer restorative materials (light-cure and self-cure). Materials and Methods: In this experimenta...

We propose a wave analysis method of a probe-fed Radial Line Planar Antennas (RLPA’s) for uniform aperture field distribution. The probe-fed RLPA’s [1]-[4] have an advantage of high efficiency, because the excitation probes of the radiating elements can be fed by a standing wave in the radial line with a short-circuited termination of its end. The authors proposed an analysis method [4] of aper...

Fiber-fed etalons are widely employed in advanced interferometric instruments such as gravitational-wave detectors, ultrastable lasers and calibration reference for high-precision spectrographs. We demonstrate that variation near-field distribution of the feeding fiber would deteriorate spectrum precision fiber-fed Fabry-Perot etalon, especially when at order 3 * 10-10 or higher is required. Th...

Earlobe piercing is a common office room procedure done by a plastic surgeon. Various methods of ear piercing have been described. In this article, we describe a novel method of laser ear piercing using the diode laser. An 18-year-old female patient underwent an ear piercing using a diode laser with a power of 2.0 W in continuous mode after topical local anaesthetic and pre-cooling. The diode l...

We report an alignment-free gallium oxide (Ga2O3) heterojunction barrier Schottky (HJBS) power diode, which utilizes the self-assembled Ni nanostructures as in situ masks for trench etching of Ga2O3 and subsequent selective-area filling p-type NiO. By increasing depth to 200 nm, relevant HJBS diode exhibits improved reverse blocking capabilities including reduced leakage current density 10−8 A/...

We propose a platform for observing the Josephson diode effect: Andreev molecule. This nonlocal electronic state is hosted in circuits made of two closely spaced junctions, through hybridization states. The effect occurs at level one individual junction while other generates required time-reversal and spatial-inversion symmetry breaking. present microscopic description this phenomenon based on ...