We examine the application of Josephson radiation emitters to spectral calibration of singlephoton-resolving detectors. Josephson junctions were patterned in a YBCO film on a bi-crystal sapphire substrate and were voltage controlled to generate radiation in the frequency range of 0.051 THz. The detector used in this work consisted of a gate-defined quantum dot photon-to-charge transducer couple...

This paper discusses the trade-off between surge-current capability on the one hand and reverse-recovery charge, ruggedness and softness of high-voltage diodes on the other hand. Diodes with a CIBH (Controlled Injection of Backside Holes) structure in front of the cathode and a highly doped p-region combine high surge-current capability with reverse-recovery ruggedness and softness. This can be...

This paper reports the preliminary development of a microand nano-fabricated carbon nanotube (CNT) –based electron source intended for micro-propulsion applications. The paper proposes a device that implements a trade-off between microfabrication complexity and performance using a 3D packaging technology to minimize interception and decouple the process flows of the grid and the emitter array. ...

The Field emitter display (FED) is a very promising type of flat panel display. It possesses the potential to combine the performance of the Cathode Ray Tube with the compactness of the Liquid Crystal Display, while offering the additional advantage of low power consumption. The performance and reliability of the FED depend strongly upon the geometry of the deposited emitter cones. The formatio...

Due to the increasing complexity of electromagnetic signals, there exists a significant challenge for recognizing radar emitter signals. In this paper, a hybrid recognition approach is presented that classifies radar emitter signals by exploiting the different separability of samples. The proposed approach comprises two steps, namely the primary signal recognition and the advanced signal recogn...

We demonstrate by 3D numerical calculations that the interaction of a single quantum emitter with the electromagnetic field is both enhanced and directed by a nano-optical Yagi-Uda antenna. The single emitter is coupled in the near field to the resonant plasmon mode of the feed element, enhancing both excitation and emission rates. The angular emission of the coupled system is highly directed a...

A field emission from a lateral emitter made by a multiwalled carbon nanotube (MWCNT) yarn was investigated. The lateral emitter showed an excellent field emission performance with a low turn-on electric field of 1.13 V/μm at an emission current of 1 μA, high emission current of 0.2 mA at an applied voltage of 700 V, and longtime emission stability for over 20 h without any significant current ...

We present a terahertz THz system based on a poled electro-optic EO polymer emitter-sensor pair for the generation and detection of broadband electromagnetic pulses free of spectral gaps. The gap-free THz spectrum obtained from the system is attributed to the amorphous form of the EO polymer films. Using 50-fs laser pulses centered at 800 nm, a 100m thick emitter, and a 180m thick sensor, the o...

We investigate the conditions yielding plasmon-exciton strong coupling at the single emitter level in the gap between two metal nanoparticles. Inspired by transformation optics ideas, a quasianalytical approach is developed that makes possible a thorough exploration of this hybrid system incorporating the full richness of its plasmonic spectrum. This allows us to reveal that by placing the emit...

abstract this study was conducted to determine the impacts of different drip irrigation method and amount of water on yield and water use efficiency of tomato in varamin agricultural research center, iran. the study was done during two years. experimental design was randomized complete blocks design (rcbd) in split plot with three replications. three different drip irrigation method; surface dr...