bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of the lasing characteristics of InGaAs/GaAs WGM microlasers
Authors: Kryzhanovskaya N V , Moiseev E I , Zhukov A E , Zubov F I , Kalyuzhnyy N A , Mintairov S A , Guseva Yu A , Tikhomirov V G , Kulagina M M , Kadinskaya S A , Vinogradov A Yu , Maximov M V 
Published: December 2020

Abstract
We present an analysis of spectral and threshold characteristics of InGaAs/GaAs quantum well-dot microdisk laser operated under cw current injection at room temperature without external cooling. The experimental values of the threshold current for the disk and ring microlasers are compared. We observe that the threshold current can be significantly decreased in devices with large diameters (more than 30 μm) by using the ring geometry.
Raman spectroscopy of strained GaP nanowires
Authors: Sharov V A , Bolshakov A D , Fedorov V V , Mukhin I S 
Published: December 2020

Abstract
Strain-induced effects on the optical properties of GaP nanowires (NWs) were investigated with micro-Raman mapping and numerical calculations. Various techniques for achieving high mechanical strains in NWs were studied including NW fixation with metallic contacts created with optical lithography and AFM-based nanomanipulations. Polarization-dependent micro-Raman mapping of highly-strained GaP NW was carried out. The impact of tension and compression strains on the Raman signal of bent NW was separated. Numerical model describing strain-induced behavior of TO Raman mode was introduced.
Silicon nitride Mach-Zehnder interferometer for on-chip quantum random number generation
Authors: Prokhodtsov A , Kovalyuk V , An P , Golikov A , Shakhovoy R , Sharoglazova V , Udaltsov A , Kurochkin Y , Goltsman G 
Published: December 2020

Abstract
In this work, we experimentally studied silicon nitride Mach-Zehnder interferometer (MZI) with two directional couplers and 400 ps optical delay line for telecom wavelength 1550 nm. We achieved the extinction ratio in a range of 0.76-13.86 dB and system coupling losses of 28-44 dB, depending on the parameters of directional couplers. The developed interferometer is promising for the use in a compact random number generator for the needs of a fully integrated quantum cryptography system, where compact design, as well as high generation speed, are needed.
Development of Control Method For An Optimal Quantum Receiver
Authors: Elezov M S , Shcherbatenko M L , Sych D V , Goltsman G N 
Published: December 2020

Abstract
We propose a method for optimal displacement controlling of an optimal quantum receiver for registrations a binary coherent signal. An optimal receiver is able to distinguish between two phase-modulated states of a coherent signal. The optimal receiver controlling method can be used later in practice in various physical implementations of the optimal receiver.
About compensation of radiation - induced losses in optical fibers
Authors: Dmitrieva D S , Pilipova V M , Davydov V V , Valiullin L R 
Published: December 2020

Abstract
In article the necessity of developing a method of the compensation of radiation-inducted losses in the fiber optic communication lines is substantiated. Reasons of appearance of radiation color centers in the optical fibers are considered. A method of increasing the velocity of the relaxation processes after finishing the γ-radiation influence on the fiber optic communication line is developed. The received results are presented.
Optical densitometry method for liver function assessment using indocyanine green
Authors: Kolokolnikov I , Lavrenyuk I , Savchenko E , Nepomnyashchaya E 
Published: December 2020

Abstract
Indocyanine green is a tricarbocyanine dye, that is stable in human blood plasma and can be completely eliminated by liver in several days. Due to its properties it can be used to assess the metabolic liver function. We present optical densitometry device and theory for taking measurements of concentration of indocyanine green in patient’s blood in vivo.
Optimal fiber optic scheme for sub-SQL quantum receiver realization
Authors: Shcherbatenko M , Elezov M , Sych D , Goltsman G N 
Published: December 2020

Abstract
Practical implementation of high-precision quantum measurements is an important problem in modern science. One of the main parts of the quantum receiver is the optical scheme. We developed and tested several optical circuits based on different types of interferometers, namely Sagnac-based scheme, Mach-Zehnder-based scheme, and Michelson-based scheme. All these schemes are assembled with optical fibers and fiber-optic components, since the fiber-optic implementation is closest to application in practical devices. Schemes were evaluated according to two main criteria: extinction and interference stability. On the basis of the obtained data, it can be concluded that the most suitable is the scheme based on the Mach-Zehnder interferometer. In continuous mode, we were able to obtain an interference extinction about 30 dB with acceptable temporal stability.
Nuclear magnetic spectrometer of differential type for determining the longitudinal relaxation time in turbulent fluid flows
Authors: Myazin N S , Davydov V V , Sviatkina V I , Yushkova V V 
Published: December 2020

Abstract
The article substantiates the necessity of measuring the longitudinal relaxation time T

1
of the flowing liquid to control its state. For such measurements, a new method for measuring T

1
in a flowing fluid is proposed. This method allows to measure relaxation time in a wide range of a flow rate (more than two orders of magnitude).
Resonant activation of resistive switching in ZrO2(Y) based memristors
Authors: Baranova V N , Filatov D O , Antonov D A , Antonov I N , Gorshkov O N 
Published: December 2020

Abstract
We report on a comparative study of resistive switching in the memristors based on ZrO2(Y) films and on ZrO2(Y)/Ta2O5 bilayer stacks by triangle voltage pulses with superimposed high-frequency sinusoidal signal. The dependencies of the current difference in the low resistance state and in the high resistance one on the sinusoidal signal frequency for the ZrO2(Y)-based memristor and for the ZrO2(Y)/Ta2O5-stack based one manifested one and two maxima, respectively attributed to the resonant activation of the migration of the oxygen ions via the oxygen vacancies by the alternating external electric field in ZrO2(Y) and in Ta2O5.
An improved design of a seesaw-type MEMS switch for increased contact force
Authors: Marukhin N V , Uvarov I V 
Published: December 2020

Abstract
Microelectromechanical systems (MEMS) switches have a wide range of possible applications due to their promising working characteristics, but commercial success of these devices is limited by low reliability. In contrast with macroscopic electromechanical relays, MEMS switches typically develop a small contact force, which results in unstable and high contact resistance. In this paper we propose the design that ensures several times higher contact force in comparison with previously used structure. Enhancement of the force is achieved without increasing the footprint and operating voltage of the switch. The analytical calculation and finite element simulation of the working characteristics are performed. At the driving voltage of 100 V the modified switch provides the contact force as high as 130 µN, which is an order of magnitude higher than the force developed by the basic device.
Design and simulation of RF MEMS switch for use in the millimetre wavelength range and SPDT RF MEMS switch
Authors: Lysenko I E , Tkachenko A V , Ezhova O A , Shafrostova S I 
Published: December 2020

Abstract
This article describes in detail the design of a shunt capacitive RF MEMS switch for Ka-frequency band, as well as the design of a single-pole-double-directional RF MEMS switch made on its basis. An electrostatic and electromagnetic analysis was performed using the MATLAB and ANSYS HFSS software package. The switch uses a 1.52 V actuation voltage and 1.3 μs of switching time to move the membrane from the up state to the down state. The operating frequency range of this switch is between 24-34 GHz with isolation of -53 dB at 29 GHz and reflection loss of -0.25 dB for this frequency range. The design of the switch is made on a GaAs substrate with a thickness of 525 μm with a double-sided insulating layer of silicon oxide with a thickness of 2 μm.
Simulation of the action of a three-dimensional nonlinear spiral phase plate in the near diffraction zone
Authors: Khorin PA , Ustinov AV 
Published: December 2020

Abstract
The report investigates the action of a nonlinear spiral phase plate in the near diffraction zone, taking into account the three-dimensional structure of the optical element. Simulation of the diffraction of a Gaussian beam with linear polarization is performed on the basis of the finite difference in the time domain method. Numerical comparison of the action of linear and nonlinear phase plates showed a difference in their action at distancing from the optical element.
Investigation of the influence of the geometric parameters of AFM cantilevers on the resonant frequency of their oscillations
Authors: Panchenko I V , Shandyba N A , Ballouk A , Rodrigues D , Kolomiytsev A S , Ageev O A 
Published: December 2020

Abstract
This paper presents the results of theoretical and experimental studies aimed at studying the influence of the basic geometric parameters of micromechanical cantilevers on the resonant frequency of their oscillations. The dependences of the oscillation frequency on the length of the cantilever beam, obtained based on mathematical modeling are theoretically investigated by the finite element method. In experimental studies that used AFM cantilever beams, the beams were shortened stepwise by the method of local ion beam etching by focused ion beam (FIB) Ga+. After each step, the change in the resonant frequency of oscillations was monitored. It was found that the application of the FIB method allows you to accurately change the geometric parameters of the probe beams, which, in turn, allows you to change the resonant frequency of cantilever oscillations with high accuracy. During the analysis of the obtained dependences of the resonant frequency of oscillations on the geometric parameters of the beams, it was found that a decrease in the length of the cantilever from 110 to 80 μm leads to an approximately twofold increase in the resonant frequency of oscillations of the cantilever from 320 to 620 kHz. The obtained graphs of the theoretical and experimental dependencies are compared, which showed a good correlation of the results.
Research of the mechanical parameters of silicon membranes for acoustic sensors
Authors: Malokhatko S V , Gusev E Yu , Rassolov E A , Khannanov A M , Ageev O A 
Published: December 2020

Abstract
This paper presents the results of modeling and fabrication of silicon membranes for acoustic sensors with resonant frequency from 2 kHz to 60 kHz and pressures from 0.1 to 14 Pa. An analysis of the constructive and mechanical parameters of monocrystalline silicon membranes is performed. The range of membrane edge length (6-20 mm) at a fixed thickness of 50 μm determined. The etching process of a silicon wafer by anisotropic wet etching was studied. A process flow for manufacturing silicon membranes is proposed. The results of experimental studies of amplitude-frequency characteristic of membranes are obtained.
Improving the mechanical resistance of the glass surface for optoelectronic devices by electron beam processing
Authors: Avdeev S P , Gusev E Yu , Ryabova D I 
Published: December 2020

Abstract
The paper considers the issues of hardening the surface of phosphate glasses for optoelectronic devices. The effect of electron-beam processing on the physical-mechanical properties of the glass surface is investigated. It was found that the processing of phosphate glass “SZS23” increases the surface microhardness by 24% owing to removing the damaged layer and changing the elemental composition of the glass surface.
Characteristics of an all-solid-state lithium-ion battery prototype
Authors: Fedorov I S , Mazaletskiy L A , Mironenko A A , Naumov V V , Rudy A S , Tortseva J S 
Published: December 2020

AbstractThe results of the study of the charge-discharge characteristics and impedance of a solid-state lithium-ion battery of the electrochemical system LiV2O5-LiPON-(Si-O-Al) are presented. It is shown that the features of the charge-discharge curevs are associated with a change in the Fermi level of electrode materials due to a change in the lithium concentration. The results of impedance spectroscopy in the ranges of high, medium and low frequencies are presented and equivalent circuits are proposed.
Modelling of normal domain evolution after single-photon absorption of a superconducting strip of micron width
Authors: Dryazgov M , Semenov A , Manova N , Korneeva Yu , Korneev A 
Published: December 2020

Abstract
The present paper describes a modelling of normal domain evolution in superconducting strip of micron width using solving differential equations describing the temperature and current changes. The solving results are compared with experimental data. This comparison demonstrates the high accuracy of the model. In future, it is possible to employ this model for improvement of single photon detector based on micron-scale superconducting strips.
Substrate-dependent degradation of thin TMDC layers in ambient conditions
Authors: Borodin B R , Benimetskiy F A , Alekseev P A 
Published: December 2020

Abstract
In this work, substrate-dependent degradation of thin layers of transition metal dichalcogenides (TMDC) is demonstrated. The energy barrier heights of the MoSe2/Au and MoSe2/Ni heterojunctions were studied using Kelvin probe force microscopy. The effect of the barrier height on the photodegradation process is shown. The results show that the Ni-covered substrate promotes the photodegradation process in the few-layer MoSe2 flake. While the Au-covered substrate depresses it. The results of this work show the importance of choosing a substrate for the stability of devices based on thin MoSe2 layers and might be useful for creating devices based on thin TMDC layers.
Microscopic simulation of e-beam induced PMMA chain scissions with temperature effect
Authors: Sidorov F A , Rogozhin A E 
Published: December 2020

Abstract
This study presents microscopic quantitative model of e-beam induced poly-methylmethacrylate (PMMA) main-chain scissions. Scission processes are supposed to be caused by ester side group elimination, competing with hydrogen abstraction processes. Experimental values of PMMA radiation scission yield at different temperatures were obtained using direct Monte-Carlo algorithm for the simulation of e-beam scattering in PMMA/Si structure and detailed PMMA layer model for the simulation of exposed PMMA molecular weight distribution. The radiation scission yield increase at higher temperatures is associated by the increase of probability of remote PMMA main-chain scission, which follows the ester side group elimination. Temperature dependence of remote scission probability for the temperature range 20-180 °C is determined.
Quantum (matrix) geometry and quasi-coherent states
Authors: Steinacker Harold C 
Published: December 2020

Abstract
A general framework is described which associates geometrical structures to any set of D finite-dimensional Hermitian matrices X

a
, a = 1, …, D. This framework generalizes and systematizes the well-known examples of fuzzy spaces, and allows to extract the underlying classical space without requiring the limit of large matrices or representation theory. The approach is based on the previously introduced concept of quasi-coherent states. In particular, a concept of quantum Kähler geometry arises naturally, which includes the well-known quantized coadjoint orbits such as the fuzzy sphere

S

N

2

and fuzzy

C

P

N

n

. A quantization map for quantum Kähler geometries is established. Some examples of quantum geometries which are not Kähler are identified, including the minimal fuzzy torus.
Efficient energy resolved quantum master equation for transport calculations in large strongly correlated systems
Authors: Dorn Gerhard , Arrigoni Enrico , von der Linden Wolfgang 
Published: December 2020

Abstract
We introduce a systematic approximation for an efficient evaluation of Born–Markov master equations for steady state transport studies in open quantum systems out of equilibrium: the energy resolved master equation approach. The master equation is formulated in the eigenbasis of the open quantum system and build successively by including eigenstates with increasing grandcanonical energies. In order to quantify convergence of the approximate scheme we introduce quality factors to check preservation of trace, positivity and hermiticity. Furthermore, we discuss different types of master equations that go beyond the commonly used secular approximation in order to resolve coherences between quasi-degenerate states. For the discussion of complete positivity we introduce a canonical Redfield–Bloch master equation and compare it to a previously derived master equations in Lindblad form with and without using the secular approximation. The approximate scheme is benchmarked for a six orbital quantum system which shows destructive quantum interference under the application of a bias voltage. The energy resolved master equation approach presented here makes quantum transport calculations in many-body quantum systems numerically accessible also beyond six orbitals with a full Hilbert space of the order of ∼106.
Simulation Analysis of Voltage Distribution of 500kV Degraded Magnetic Insulator String
Authors: Xueming Zhou , Danhui Hu , Zhiqiang Feng , Ding Zhou , Xiaopo Mao 
Published: December 2020

Abstract
Insulators are important power grid equipment and key components to ensure electrical insulation performance. Porcelain insulators with reduced insulation performance are generally low or zero, and are broken down under lightning overvoltage or even normal operating voltage. The thermal effect generated by the strong power frequency fault current flowing through the porcelain insulator will often cause deterioration of the porcelain insulator. The iron cap exploded, causing serious accidents such as stringing of insulators and grounding of wires. If there are continuous multiple pieces of zero-value insulators in the insulator string, the voltage of the insulators around the zero-value insulators will increase compared to normal conditions, and the normal insulators farther from the zero-value insulators will be less affected. If there are multiple consecutive zero-value insulators at different positions in the insulator string, if the number of zero-value insulators in the insulator string is large enough, and the distribution positions are more diffuse, the voltage of the entire string of insulators in the insulator string will be biased as a whole high.
Design Sling Bag Using Kansei Engineering Method
Authors: Fajri Hasibuan Chalis 
Published: December 2020

Abstract
The rapid development of the bag craft business has led to tighter competition. Companies must be able to produce products on the market. Facing business competition. The conditions that occurred in the Sabina collection business showed that in the sale of sling bag models in July 2019 there was still a decline of 12% of total sales. In developing a sling bag product, it is necessary to research the consumer’s desire by using the engineering is a method as a bridge to the desires of consumers towards the desired product design, by defining consumer desires (images) identified through the words Kansei into product design. Then the conjoint analysis is used to get the value of the relationship between the design elements and Kansei word. The results of this study are from the Kansei word questionnaire obtained 7 pairs of Kansei words that represent the right words taking into account the products offered. The results of conjoint analysis based on categories that are closely related to each Kansei word are the design concepts of fabric, rectangular shape, medium size, and color variants.
Comparison and Integration of Axiomatic Design with Quality Function Deployment as a Design Method: a Literature Review
Authors: Fauzi Malik Alfin , Napitupulu Humala L , Ginting Rosnani 
Published: December 2020

Abstract
This paper focus on certain design methods: Axiomatic Design (AD) and its comparisons with Quality Function Deployment (QFD). While there are other methods such as QFD is more suitable for problem identification, AD is more suitable for decision making of product development with high quality needs. The general observations on the similarities and differences among the two design methods based on steps are discussed, contrasting the basic performances of the design method. We can conclude that Axiomatic Design is more suitable for the decision stage on planning phase while QFD is more suitable as a tool of problem inquisition.
Product Development with Quality Function Deployment (QFD) : A Literature Review
Authors: Ginting Rosnani , Ishak Aulia , Fauzi Malik Alfin , Satrio M Riski 
Published: December 2020

AbstractQuality Function Deployment (QFD) is one method for developing customer-oriented products. QFD is a planning process that helps the organization plan to implement various technical support tools effectively and complement each other to prioritize each problem. House of Quality (HOQ) is a tool from QFD that is used to determine design boundaries, shows the relationship between respondent needs and the matrix to satisfy the needs of respondents and illustrates the focus of the design team to produce quality products. The paper’s purpose is to review the QFD literature based on references that have been collected about the history of the development of the QFD method and the application of QFD in product design and development. Planning for process quality is a very important technique for managing the quality of the product during the product development process. Done to expand processes and adequate process capabilities aimed at producing products. Since Japanese academics and industry began 3 decades more than have passed to formalize QFD techniques in 1960 and 1970. Because of the effectiveness in quality management and product expend, QFD applications have been widely used.
Product Design of Total Dissolved Solid
Authors: Lodewijk Napitupulu Humala , Ginting Rosnani , Kemala Bellina Diah Sri 
Published: December 2020

Abstract
Development of measuring devices total dissolved solid microcontroller-based with several variations of the conductivity sensor has been carried out. In the process of making this TDS product design the technique is first used brainstorming to determine the characteristics of the product to be made, then draw conclusions from the results of brainstorming that has been collected. Then the technique is done sampling by distributing open and closed questionnaires to determine the type of product. After the open and closed questionnaires are finished distributing, then conducted survey is market using a technique sampling, as well as determining the validity and reliability of the main products with products of competitors I, competitors II and competitors III. The steps problem to the sub problems are determined in order to classify the objectives that will be made in the design of the TDS product. Sub problem to sub solutions are carried out to determine the Quality Function Deployment (QFD) Product. The step sub-solution to the solution is determined to generate and evaluate alternatives by the sum of the paired matrices between attributes. Product design uses the nigel cross approach.