Surface reconstruction of a field electron emitter

Gallyamov

2015

J. Phys.: Conf. Ser.

Abstract. Mathematical modelling and computer simulation is performed for analysis of nanotriode characteristics in static mode. It is shown nanotriode has differential parameters, which significantly (by orders) differ from those characteristics of usual vacuum lamps, which, together with miniaturization significantly expands the possibilities of their use. IntroductionThe goal of this paper is to model characteristics of thin-film vacuum nanotriode (shown in figure 1) [1]. Thin-film vacuum nanotriode with cone-shaped emitters is considered. Each emitter has height 200 nm with 1 nm radius of surface curvature on the top. Current-voltage characteristics was calculated for single cylindrical triode cell (655 nm in diameter) in [1]. It was shown the value of the emission current comes to microamperes, when the voltage is less than 20 V applied on the anode-emitter gap 500 nm. Anode-cathode voltage 16-20 V can generate more than 0.5 mkA emission current flown to the anode when gate-cathode voltage is less than 14 V and gate diameter is 150 nm [1].To achieve the goal of this paper it is necessary to investigate the behaviour of differential parameters when changing the geometric dimensions of the triode structures operating in static mode. Electron transport processes are described using electrostatic approximation and hydrodynamic flow function for finite element solution [2][3][4].

Section: Resultsmentioning

confidence: 99%

Modelling of static mode characteristics of a thin-film vacuum nanotriode

Gallyamov

2015

J. Phys.: Conf. Ser.

“…This approach is less general, but it has that advantage that it allows to test the computation speed of whole software complex and derive properties of the algorithm it's based on without having to study employed third-party libraries, packages and mathematical environments separately. We are creating applied software complexes for mathematical and computer modelling of emission sources described with results of their function in [4]- [14]. This paper focuses on developing methods of practical assessment of confidence complexity for the algorithm itself and the software based on it.…”

Section: Introductionmentioning

confidence: 99%

Confidence complexity of computer algorithms

Kiktenko

Lunkovskiy

2014 2nd 2014 2nd International Conference on Emission Electronics (ICEE)

2014

Self Cite

A statistical research of an algorithm complexity as a random value was carried out via numerical experimentation using parallel computation. For a segment of input data sizes point characteristics for this random value and its confidence interval are obtained. Confidence complexity function value based on gamma-distribution is determined. The following result have been obtained: the used criteria are adequate for predicting the mean execution time and its confidence intervals for given input types.

“…All the results mentioned herein are mostly presented as examples of the work of the software complex. Their detailed discussion as research topics belongs in apart publications [1]- [9] in responding fields. A scheme of an emitter cell corresponding to real-world construction of cathode micro node with a sharp conical cathode is shown on fig.…”

Section: Introductionmentioning

confidence: 99%

Mathematical model and software complex for computer simulation of field emission electron sources

AIP Conference Proceedings

2015

A mathematical model of motion of the heart for use in generating source and attenuation maps for simulating emission imaging Med.Abstract. The software complex developed in MATLAB allows modelling of function of diode and triode structures based on field emission electron sources with complex sub-micron geometry, their volt-ampere characteristics, calculating distribution of electric field for educational and research needs. The goal of this paper is describing the physical-mathematical model, calculation methods and algorithms the software complex is based on, demonstrating the principles of its function and showing results of its work. For getting to know the complex, a demo version with graphical user interface is presented.