bluuebunny/crossref_metadata_2025_split huggingface dataset:
Non-Huygens invisible metasurfaces
Authors: Shamkhi Hadi K. , Baryshnikova Kseniia V. , Sayanskiy Andrey , Terekhov Pavel D. , Gurvitz Egor A. , Valero Adria Canos , Karabchevsky Alina , Kapitanova Polina , Evlyukhin Andrey B. , Belov Pavel , Kivshar Yuri , Shalin Alexander S. 
Published: April 2020

Abstract
All-dielectric nanophotonics attracts more and more attention nowadays due to the possibility to control and configure light scattering on high-index semiconductor nanoparticles. It opens a room of opportunities for the designing novel types of nanoscale elements and devices, and paves a way to advanced technologies of light energy manipulation. One of the most perspective and interesting effects is directive light scattering provided by the so-called Kerker and anti-Kerker effects giving a possibility to realize Huygens source of light, fully transparent metasurfaces, different types of nanoatennae etc. Another one corresponds to the realization of so-called “anapole states” providing near-zero scattering accompanied with strong near-fields. Here we briefly review some new results on the induced invisibility regarding fully transparent metasurfaces based on the simultaneous cancellation of the forward and backward scattering via particular optical responses of multipoles (similar to Kerker effect), and invisible objects and structures governed by the novel type of anapoles – hybrid anapole states.
Microwave-Assisted Synthesis Of Cerium Doped Zno Nanostructures And Its Optical Properties
Authors: Shulga A. , Butusov L.A. , Chudinova G.K. , Sheshko T.F. 
Published: April 2020

Abstract
In this research we attempted to synthesize zinc oxide nanostructures doped with REE cerium by microwave-assisted method. The article presents the results obtained with different pH values of the processed solutions, the time of exposure to microwave irradiation, as well as the results of the application of cyclic irradiation exposure. Samples studied by fluorescence spectroscopy and scanning electron microscopy.
Hybrid silicon/phase-change metasurfaces and nanoantennas for active nanophotonics
Authors: Sinev I. , Ruiz de Galarreta C. , Trofimov P. , Alexeev A. , Bertolotti J. , Wright C. D. 
Published: April 2020

Abstract
All-dielectric metasurfaces and nanoantennas offer unprecedented flexibility and efficiency of manipulation of light at the nanoscale. Still, the functionality of conventional dielectric-based devices is fixed-by-design, i.e. the response is locked-in at the fabrication stage. To address the challenges offered by modern nanophotonics, active, dynamic and reconfigurable control of such structures is required. Here, we demonstrate active all-dielectric devices enabled by embedding subwavelength chalcogenide phase-change material inclusions in the volume of main silicon nanoresonators. We validate the concept via the design and development of a metasurface for active spectral filtering in the near infrared and a subwavelength nanoantenna providing complete switching of surface plasmon-polariton directivity pattern.
Applications of dielectric pads, novel materials and resonators in 1.5T and 3T MRI
Authors: Slobozhanyuk A. , Zivkovic I. , Shchelokova A. , Mikhailovskaya A. , Sushkov I. , Nenasheva E. , Melchakova I. , Belov P. , Webb A. 
Published: April 2020

Abstract
In order to boost the performance of magnetic resonance imaging without increasing the static magnetic field, it is necessary to increase its intrinsic sensitivity. This allows a reduction in the scanning time, increased spatial resolution, and can enable low-field strength systems (which are much cheaper and can be used to scan patients with metallic implants) to have a higher signal-to-noise ratio (SNR) so that they are comparable to more expensive higher field strength systems. In this contribution, we demonstrate radiofrequency field enhancing and shaping devices based on novel materials, such as high permittivity dielectric structures and metamaterials. These materials can substantially enhance SNR, thus potentially increasing image resolution or allowing faster examinations.
High directivity of the dielectric spherical antennas in 0.2-0.35 THz range
Authors: Storozhenko D V , Deev A V 
Published: April 2020

Abstract
The article presents the results of numerical simulation by the finite element method of a spherical dielectric resonator with a dipole antenna placed inside. The directional properties of this type of antenna in the 2–4 GHz and 0.2–0.35 THz bands are calculated. It is shown that in a narrow band due to high order Mie resonances, the peak directivity of the antenna can reach values of 12.5 dBi with radiation efficiency of 0.9 and a sphere size of the order of 1.2 λ. A variant of the antenna for the 0.2–0.35 THz range with its placement on a dielectric substrate is proposed, and the dimensional ratios of the structural elements for the narrow-band mode with maximum gain are presented.
Effect of Cu and Sn concentration on the performance of all-sprayed CZTS solar cell
Authors: Rajeshmon V.G , Vijayakumar K.P. , Sudha Kartha C. 
Published: April 2020

Abstract
Cu2ZnSnS4/In2S3 thin film solar cell was prepared using chemical spray pyrolysis. Influence of variation in copper concentration in precursor solution on the properties of CZTS thin films was monitored. Concentration of copper was found to have essential role in adjusting composition and crystallinity of CZTS thin films. Junction was fabricated using CZTS as absorber layer and spray pyrolysed In2S3 as buffer layer. Two sets of devices were prepared, one by varying copper concentration and the other by varying tin concentration in the precursor solution for the deposition of CZTS thin films. For both sets, In2S3 thin films were deposited as buffer layer and Ag electrodes were used for taking contacts. All the performance parameters were found to have dependence on the concentration of Cu and Sn. For getting maximum conversion efficiency, the sprayed CZTS absorber layer should have elemental ratio of Cu:Zn:Sn:S=2.5:1:0.7:12 in the precursor solution. Maximum efficiency obtained was 1.85 %.
Multipolar analysis of second-harmonic generation in (111) Gallium Arsenide nanoparticles
Authors: Volkovskaya I , Smirnova D , Xu L , Sautter J , Miroshnichenko A , Lysevych M , Camacho-Morales R , Kamali K Z , Karouta F , Vora K , Tan H H , Kauranen M , Staude I , Jagadish C , Neshev D , Rahmani M 
Published: April 2020

Abstract
We perform multipolar analysis of second-harmonic generation (SHG) from (111)-grown gallium arsenide (GaAs) nanoantennas and discuss its specifics. It was experimentally demonstrated that the conversion efficiency in axially-symmetric (111) GaAs nanoparticles remains constant under the polarization rotation of normally incident radiation in a wide range of particle sizes, while the SHG radiation pattern changes. We apply the analytical method based on the Lorentz lemma to explain this behaviour. The induced nonlinear current is decomposed into two rotating contributions, which are shown to generate multipoles of different parities. Thus, the total SHG intensity in the far-field is proved to be independent of the in-plane rotation of the pump polarization. Nevertheless, due to the threefold symmetry of the crystal with regard to the (111) direction, the SHG radiation pattern rotates around the polar axis repeating its shape every 60°.
Capabilities of ADDA code for nanophotonics
Authors: Yurkin M A , Smunev D A , Akhmetyanova A E , Glukhova S A 
Published: April 2020

Abstract
The open-source code ADDA is based on the discrete dipole approximation (DDA) – a numerically exact method derived from the frequency-domain volume-integral Maxwell equation. It can simulate interaction of electromagnetic fields (scattering and absorption) with finite 3D objects of arbitrary shape and composition. Besides standard sequential execution on CPU or GPU, ADDA can run on a multiprocessor distributed-memory system, parallelizing a single DDA calculation. This together with almost linear scaling of computational complexity with number of dipoles (discretization voxels) allows large system sizes and/or fine discretization levels. ADDA is written in C99 and is highly portable. It provides full control over the scattering geometry (particle morphology and orientation, incident beam) and allows one to calculate a wide variety of integral and angle-resolved quantities, including those related to point-dipole excitation. Moreover, ADDA can rigorously and efficiently account for plane homogeneous substrate near the particle, and employ rectangular-cuboid voxels. It also incorporates a range of state-of-the-art DDA improvements, increasing both the accuracy and computational speed of the method. At the conference we will describe the main features of current version of ADDA with special emphasis on nanoparticles and present several simulation examples.
High-value chemicals from marine diatoms: a biorefinery approach
Authors: Bayu A , Rachman A , Noerdjito D R , Putra M Y , Widayatno W B 
Published: April 2020

AbstractNowadays, we are going a step forward into the new era for the sustainable production of industrial commodity products such as energy, fine-chemicals, active compounds and materials from renewable biomass. Marine diatoms offer great potential as an untapped living factory for the generation of valuable commodity chemicals. As a photosynthetic microorganism, diatoms contain pigments, which have a high market value in the cosmetic, pharmaceutical and food colorant industries. Their unique metabolism to utilize the soluble silicate in seawater for their porous silica cell wall (frustule) opens an opportunity for the nano-porous material industry. Diatom’s lipids consist fatty acids, which could be catalytically upgraded into high-quality fuels like fatty acid alkyl esters (biodiesel) or hydrocarbons (green diesel). In the analysis reported here, we present the potential of biorefinery pathways of valuable components in marine diatoms. Understanding the biochemistry of them and the application of their valuable chemicals are discussed to gain insights for the opportunities and the key barriers in the development of marine diatoms-based biorefinery.
Utilization of various encapsulation methods in proteolytic bacteria to maintain biomass cells during storage
Authors: Sundari U Y , Noor E , Haditjaroko L , Permatasari I D , Rohadian A R 
Published: April 2020

Abstract
Bacterial isolates used are proteolytic bacteria. Bacterial cell encapsulation aimed to protect cells from some external environmental factors that can interfere with the metabolism of the cell, so as to maintain the viability of bacteria, extending the shelf life and facilitate the distribution and utilization. In this study, the encapsulation of the bacteria was carried out by nanoencapsulation method using a spray dyer and electrospun nanofibers. Encapsulation in nanosize has advantages such as immobilization efficiency because of the increased surface area and volume, providing protection due to the increased flexibility of the encapsulation material. Nanoencapsulation the proteolytic bacteria was using the coating material in the form of skim milk and maltodextrin. Electrospun nanofiber for proteolytic bacteria was using polyvinyl alcohol (PVA) and skim milk as a coating material. The results of the viability of proteolytic nanoencapsulation were higher when encapsulated using skim milk at a concentration of 15% was 44.07%. Results of encapsulation of bacteria using electrospun nanofiber method showed three parameters that affected the process of electrospun nanofiber: the coating material parameters (concentration, viscosity and mixing ratio), the process parameters (voltage, flow rate, and the distance between the collector and needle), and environmental parameters (relative humidity and temperature).
Target tracking based on neural network depth feature and texture fusion
Authors: Cao Yongzhan , Liu Meiju , Yang Shanykui , Yang Guodong , Chen Peng , Zhu Shuyun , Ge Zhuang , Liu Yuwang 
Published: April 2020

Abstract
This paper presents a method of target tracking based on convolution neural network and texture feature fusion. The lower layer of the convolutional neural network can extract some spatial structure, shape and other features of the target. High-level level can extract relatively abstract semantic information. In this paper, vgg-m convolutional neural network is adopted to realize tracking by adaptive fusion of the extracted depth features of Conv2 and Conv5 with the texture features extracted by two-dimensional Gabor filtering. In this paper, the experimental analysis of this method is carried out on the OTB2013 data set, and the results show that this method can achieve more accurate positioning of the target and has a strong timeliness.
The technology of picking up the first break of surface microseismic based on constraint
Authors: Liu Liting , Kang Liang , Tan Xing , Tang Yong , Liao Jihao 
Published: April 2020

Abstract
In this paper, a constraint based first break acquisition technique for surface monitoring is proposed. This method enables users to automatically pick up the starting point and the ending point of the first arrival position after simply observing the starting point and the ending point of the first arrival position and determining the position. Secondly, because the first break automatic picking method mentioned in this paper will analyze the data characteristics of each channel carefully to find the first break time point in each channel accurately, so that the accuracy of first break picking is significantly improved.
Depth of Moho surface in the central Sichuan region revealed by deep earthquake exploration
Authors: Chen Yu , Yang Zhichao , Liu Wei 
Published: April 2020

Abstract
Deep seismic reflection technology has been recognized by the international geosciences as an effective technical means to detect the fine structure of the lithosphere and solve the deep geological problems. Since the 1970s, a large number of deep seismic reflection profiles have been collected in the Sichuan Basin and the periphery, providing a basis for deep research and seismic acquisition techniques for crustal structure research in the region. Because the deep reflection seismic method has the characteristics of large detection depth, high resolution, accuracy and reliability, deep reflection seismic technology is still the main means of deep crust fine structure research in the future. In this paper, the ultra-deep seismic data is collected to reveal the geological characteristics of the Moho surface in the Sichuan Basin in the Sichuan Basin, which is stable and shallow and has a depth of about 45 km.
Calculation of Beam Hardening in Industrial X-ray Computed Tomography and its Correction using Filtration and Linearization Methods
Authors: Ahmed O. M. H. , Song YuShou , Xie Zhaoyang , Ayoub ANUOR A.T. 
Published: April 2020

Abstract
X-ray computed tomography is becoming an instrument for quality assurance as nondestructive testing for product inspection in industrial applications. However, the systematic error in the XCT image resulting from the physical processes of image reconstruction must be corrected. Beam hardening is one of the major artefacts that come due to an extensive range of photon energies in common x-ray sources in computed tomography instrument so-known polychromatic X-rays. The polychromatic can cause a nonlinear relationship between the attenuation and the thickness. As a result, the reconstructed image seems to have some darkness in the centre, which is considered a significant decreasing of the image quality. In this work the calculations of beam hardening and its correction using filtration and linearization methods were described. The calculations were done in four stages: the GEANT4 code was used for spectrum simulation; an optimum filter materials and thickness was chosen by a mean energy ratio method; the attenuation of aluminium material was numerically calculated using the basic polychromatic attenuation formulas, and the beam hardening was corrected using linearization and compared with the filtration method. The calculated polychromatic attenuations results of aluminium were found to be in good agreement with the existing literature. The linearization correction offers better beam hardening correction which gave a good linearity estimation without changing SNR when compared with the pre-filtration method.
The Factors Affecting Intention to Internal Whistleblowing: An Idea of Free Cheating Environment
Authors: Hardi  , Wiguna Meilda , Mela Nanda Fito 
Published: April 2020

Abstract
The main problems of this study are as follows: Does locus of control affect the intention to perform internal whistleblowing? Does the degree of seriousness of fraud affect the intention to conduct internal whistleblowing? Does Reward affect the intention to do internal whistleblowing? The data obtained in this study by distributing questionnaires to the respondents, i.e., staff/employees of OPD District Siak, Rokan Hilir and Kuantan Singingi regency with the total of 337 respondents. Data analysis with multiple linear regressions is used to obtain a comprehensive picture of the effect of independent variables namely locus of control, seriousness of fraud, and reward to the dependent variable is intense to conduct internal whistleblowing. The results showed that: locus of control effect on internal whistleblowing. The higher a person's locus of control level the higher they are to perform internal whistleblowing. The degree of seriousness fraud affects internal whistleblowing. The higher the level of fraud that occurs in the agency where staff/employees work the higher they are to conduct internal whistleblowing. The reward also influences internal whistleblowing. The higher the reward will be received by the whistle-blower the higher they are to do the internal whistleblowing.
The Impact of Government Policies towards the Economy and Education of Fishermen’s Children in Padang City
Authors: Eriyanti Fitri , Engkizar  , Alhadi Zikri , Moeis Isnarmi , Murniyetti  , Yulastri Asmar , Syafril Syafrimen 
Published: April 2020

AbstractThis study aimed at analyzing the impact of government policies towards the economy and education of fishermen's children of Minangkabau and Nias ethnics in Padang City. This study used the qualitative method with a case study approach. The main data sources were gathered from structured interview to eight fisherman families and were analyzed thematically using NVivo 10 software as the qualitative analysis instrument. The result of the study discussed four essential themes namely; first, the government policies towards the fisherman had been capable of improving their economy both Minangkabau and Nias ethnics. Second, the economic improvement for Minangkabau ethnics had an impact towards their life proven by the increasing quality of their children's education from the primary level until the higher education level. Third, the economic improvement for Nias ethnics, on the other hand, had no impact at all towards their children's education quality. Fourth, the impact differences regarding the children's education of both ethnics were caused by culture, parents' mindset, and children's' interest in education. According to parents and fishermen’s children of Minangkabau ethnic, education matters a lot for the sake of pursuing a brighter future, while according to parents and fishermen’s children of Nias ethnic, education does not really matter.
The Concept of Unen-Unen and Free Corruption Environment: An Anti-corruption Lesson from Javanese Heritage
Authors: Sariningsih Melinda , Widhyasmaramurti  
Published: April 2020

Abstract
Corruption is generally attached to one’s position to obtain personal gain and create disharmony in the community. The corruption in Indonesia somehow transforms into a detrimental problem nowadays. Therefore, this study aims at proposing an alternative concept of anticorruption from a Javanese cultural heritage which passed down from generation to generation. This anti-corruption concept formed into a variety or expression which is called unen-unen. It well known delivered from trans-generation by understanding the meaning of Unen-unen. This study record and explores Unen-unen from the book 1001 Pitutur Luhur Budaya Jawa (Ari, W. and Gunawan, W. 2014). The selection of Unen-unen was found contains the concept of anticorruption. It then analyzed using a qualitative approach using the Triangle Theory of Meanings of Odgen and Ricahrds (1952), and the Kohlberg (1995) Moral Development Theory. The analysis of this study reveals Unen-Unen has a unique concept of anti-corruption that can be used to teach a moral lesson from the early age to adults. It somehow ranges from phases pra-conventional to post-conventional as efforts to prevent the corruption.
The Affect of The Internet and Social Media: Mathematics Learning Environment Context
Authors: Hidayatullah Achmad , Suprapti Endang 
Published: April 2020

Abstract
Mathematics as one of the lessons in school has quite complex problems, it is often labelled as a difficult subject, poor in innovation and bored. Various methods has been used to make mathematics easier to learn. While on the other hand, the development of the communication industry revolution has changed community's thinking style, learning style, and lifestyle. More specifically, the development of social media, which has an impact on mathematics learning. Students who are classified as millennial, learn more about mathematics using audio visuals such as on YouTube or Instagram. The existence of social media has raised a new form of teacher relations with students. This article discussed and described about how social media has an impact on mathematics learning. The existence of internet social media made the task of the teacher lighter. However, learning mathematics in this era of social media has challenges, advantages, and disadvantages. In this literature study, it will also be explored how social media distorts the role of teachers as educators.
Integrating Islamic Education Based Value: Response to Global Challenges and Socio-Environment
Authors: Subakir Ahmad 
Published: April 2020

Abstract
Difficult problems from time to time are increasingly complex. Today's millennial generation faces various problems, ranging from the issue of moral decline, to the increasing number of liberal and even radical understandings, to the abuse of social media. All of this cannot be denied due to the inability of Islamic education to instill moral values in religious language, as well as the values of national character. At least that is the concentration of Islamic thinkers. That is why this article will discuss about the face of global challenges, it is necessary to seek value-based integrative Islamic education. This short article was written using a qualitative type library research approach. As a godly country, Indonesia places religious education, including Islamic education into the curriculum at every level of education. However, this shows the very strategic role of Islamic education, which should also be accompanied by moderate contextual understanding. The emergence of Amin Abdullah's concept of scientific integration is more or less capable of being an alternative in solving today's millennial problems. Coupled with the existence of value-based Islamic scholarly treasures, it has increasingly spurred efforts to deliver the nation's next generation to be able to compete in this information era. Of course the effort to integrate value-based Islamic education requires support and correction from various parties so that they are truly able to be solutions to global problems and challenges that are always dynamic.