bluuebunny/crossref_metadata_2025_split huggingface dataset:
Wafer-scale fabrication of isolated luminescent silicon quantum dots using standard CMOS technology
Authors: Jingjian Zhou , Pevere Federico , Gatty Hithesh K , Linnros Jan , Sychugov Ilya 
Published: September 2020

Abstract
A wafer-scale fabrication method for isolated silicon quantum dots (Si QDs) using standard CMOS technology is presented. Reactive ion etching was performed on the device layer of a silicon-on-insulator wafer, creating nano-sized silicon islands. Subsequently, the wafer was annealed at 1100 °C for 1 h in an atmosphere of 5% H2 in Ar, forming a thin oxide passivating layer due to trace amounts of oxygen. Isolated Si QDs covering large areas (∼mm2) were revealed by photoluminescence (PL) measurements. The emission energies of such Si QDs can span over a broad range, from 1.3 to 2.0 eV and each dot is typically characterized by a single emission line at low temperatures. Most of the Si QDs exhibited a high degree of linear polarization along Si crystallographic directions [

110

] and [

1
ˉ

10

]. In addition, system resolution-limited (250 μeV) PL linewidths (full width at half maximum) were measured for several Si QDs at 10 K, with no clear correlation between emission energy and polarization. The initial part of PL decays was measured at room temperature for such oxide-embedded Si QDs, approximately several microseconds long. By providing direct access to a broad size range of isolated Si QDs on a wafer, this technique paves the way for the future fabrication of photonic structures with Si QDs, which can potentially be used as single-photon sources with a long coherence length.
Paclitaxel-loaded lignin particle encapsulated into electrospun PVA/PVP composite nanofiber for effective cervical cancer cell inhibition
Authors: Li Baoe , Xia Xiaomei , Chen Jiatian , Xia Dan , Xu Ruodan , Zou Xianrui , Wang Hongshui , Liang Chunyong 
Published: September 2020

Abstract
Electrospun composite nanofibrous scaffolds have been regarded as a potential carrier for local drug delivery to prevent tumor recurrence. Herein, a model drug (paclitaxel) was creatively loaded into lignin nanoparticles (PLNPs) and then encapsulated into the polymer of poly (vinyl alcohol)/polyvinyl pyrrolidone which has been fabricated into a composite nanofibrous membrane (PVA/PVP-PLNPs) for use as a drug carrier using the electrospinning technique. The fabricated PVA/PVP-PLNPs membranes exhibited good particle distribution, mechanical properties, thermal stability and biocompatibility. In vitro experiments showed that combining lignin nanoparticles by electrospinning not only improved the drug release profile, but also enhanced the hydrophilicity of nanofibrous membranes which was beneficial to cell adhesion and proliferation. Cellular experiments demonstrated that PVA/PVP-2%PLNPs membrane showed good cell inhibition ability, and the cell survival rate was only 21% at day 7. It indicates that the as-prepared PVA/PVP-PLNPs composite nanofibers are promising candidates for local anticancer therapy.
Investigating biological effects of multidimensional carboxylated carbon-based nanomaterials on human lung A549 cells revealed via non-targeted metabolomics approach
Authors: Zhang Dingkun , Zhang Lu , Zheng Wen , Wu Fanzi , Cheng Jingqiu , Yang Hao , Gong Meng 
Published: September 2020

Abstract
The biological responses of multidimensional carboxylated carbon-based nanomaterials (c-CBNs), including carboxylated graphene, carbon nanotube, and fullerene, on human lung A549 cells were investigated by using metabolomics technology. The structure and components of c-CBNs were characterized, and their biological effects were evaluated through cell apoptosis and viability analysis. Additionally, the metabolomics analysis of the nanomaterial-cell interaction system was performed using the established platform combining liquid chromatography-mass spectrometry (LC-MS) with the bioinformatics system. Results revealed that all tested c-CBNs demonstrated some biological effects in our cell model. However, significant metabolomic alterations induced by c-CBNs were also observed mainly in amino acids, organic acids, glycerophospholipids, and glycerolipids. Further, under the tested concentrations, the multiple dimensions of c-CBNs played a major role in determining the metabolic process in various interaction modes. This study provides an advanced alternative for evaluating metabolic effects of multidimensional nanomaterials through metabolomics technology considering the association between dimension and metabolic characteristics.
Planar nonlinear metasurface optics and their applications
Authors: Huang Tianye , Zhao Xiang , Zeng Shuwen , Crunteanu Aurelian , Shum Perry Ping , Yu Nanfang 
Published: September 2020

Abstract
Metasurfaces are artificial two-dimensional (2D) planar surfaces that consist of subwavelength ‘meta-atoms’ (i.e. metallic or dielectric nanostructures). They are known for their capability to achieve better and more efficient light control in comparison to their traditional optical counterparts. Abrupt and sharp changes in the electromagnetic properties can be induced by the metasurfaces rather than the conventional gradual accumulation that requires greater propagation distances. Based on this feature, planar optical components like mirrors, lenses, waveplates, isolators and even holograms with ultrasmall thicknesses have been developed. Most of the current metasurface studies have focused on tailoring the linear optical effects for applications such as cloaking, lens imaging and 3D holography. Recently, the use of metasurfaces to enhance nonlinear optical effects has attracted significant attention from the research community. Benefiting from the resulting efficient nonlinear optical processes, the fabrication of integrated all-optical nano-devices with peculiar functionalities including broadband frequency conversions and ultrafast optical switching will become achievable. Plasmonic excitation is one of the most effective approaches to increase nonlinear optical responses due to its induced strong local electromagnetic field enhancement. For instance, continuous phase control on the effective nonlinear polarizability of plasmonic metasurfaces has been demonstrated through spin-rotation light coupling. The phase of the nonlinear polarization can be continuously tuned by spatially changing the meta-atoms’ orientations during second and third harmonic generation processes, while the nonlinear metasurfaces also exhibit homogeneous linear properties. In addition, an ultrahigh second-order nonlinear susceptibility of up to 104 pm V−1 has recently been reported by coupling the plasmonic modes of patterned metallic arrays with intersubband transition of multi-quantum-well layered substrate. In order to develop ultra-planar nonlinear plasmonic metasurfaces, 2D materials such as graphene and transition metal dichalcogenides (TMDCs) have been extensively studied based on their unique nonlinear optical properties. The third-order nonlinear coefficient of graphene is five times that of gold substrate, while TMDC materials also exhibit a strong second-order magnetic susceptibility. In this review, we first focus on the main principles of planar nonlinear plasmonics based on metasurfaces and 2D nonlinear materials. The advantages and challenges of incorporating 2D nonlinear materials into metasurfaces are discussed, followed by their potential applications including orbital angular momentum manipulating and quantum optics.
Measurement of the phase structure of elliptically polarized undulator radiation
Authors: Taira Yoshitaka , Fujimoto Masaki , Ri Shien , Hosaka Masahito , Katoh Masahiro 
Published: September 2020

Abstract
This study theoretically and experimentally investigates the phase structure of radiation emitted from an elliptically polarized undulator. Analytic expressions for the emitted electromagnetic fields are fully derived and the radiation’s phase structure is found to change according to polarization. When the polarization is circular, a helical structure is observed; however, when the polarization changes from circular to elliptical, a phase structure comprising several orbital angular momentum modes is observed. Herein, phase gradients of the undulator’s radiation are measured using a double-slit interferometer. A sampling moiré method is used to accurately extract the phase difference on the transverse plane from the observed interference fringe. The measured phase gradients of the first and second harmonics reveal a similar change to the calculated results. However, under circular polarization, the change exhibited by the third harmonic is smaller than the calculated value. This phase gradient reduction is due to the split in phase singularities and is attributed to both the fluctuation in the undulator’s peak magnetic fields and the radiation emitted from the entrance and exit of those magnetic fields.
Quasi-nondegenerate pump–probe magnetooptical experiment in GaAs/AlGaAs heterostructure based on spectral filtration
Authors: Surýnek M , Nádvorník L , Schmoranzerová E , Němec P 
Published: September 2020

Abstract
We report on a quasi-nondegenerate pump–probe technique that is based on spectral-filtration of femtosecond laser pulses by a pair of mutually-spectrally-disjunctive commercially available interference filters. The described technique enables to obtain pump and probe pulses with wavelengths that are spectrally close but distinct. These contradictory requirements, which are dictated, for example, by a suppression of stray pump photons from the probe beam in spin-sensitive magneto-optical experiments in non-magnetic semiconductors, can be fulfilled at very low cost and basically no requirement on space. Especially the second feature is important in pump–probe microscopy where collinear propagation of pump and probe pulses is dictated by utilization of a microscopic objective and where the setups are typically quite complex but suffer from a limited size of optical breadboards. Importantly, this spectral-filtration of 100 fs long laser pulses does not affect considerably the resulting time-resolution, which remains well below 500 fs. We demonstrate the practical applicability of this technique by performing spin-sensitive magnetooptical Kerr effect (MOKE) experiment in GaAs/AlGaAs heterostructure, where a high-mobility spin system is formed after optical injection of electrons at wavelengths close to the MOKE resonance. In particular, we studied the time- and spatial-evolutions of spin-related (MOKE) and charge-related (reflectivity) signals. We revealed that they evolve in a similar but not exactly the same way which we attributed to interplay of several electron many-body effects in GaAs.
A Highly Reliable Strong Physical Unclonable Function Design Based on FPGA
Authors: Zhang Yi , Zhu Min , Yang Bohan , Liu Leibo 
Published: September 2020

Abstract
Physical unclonable function (PUF) generates unique secret keys from unavoidable IC manufacturing variations, which can eliminate high computation expense and additional key storage. The inherent flexibility and lower time-to-market have made field programmable gate array (FPGA) the platform of choice for faster implementation. However, logic elements on FPGA are predefined while some types of PUFs need strictly mirrored symmetric routing. This paper presents a robust and FPGA friendly PUF based on oscillator collapse (OC-PUF) with million number of challenge-response pairs (CRPs). Mirrored routes are obtained with a novel delay cell design and a signal path configuration technique. In the meanwhile, the response bias issues on FPGA is effectively resolved. Measured on Altera DE2-115, the average interchip hamming distance (inter-chip HD) of the proposed OC-PUF is 46.7%. After applying dynamic threshold with a value 255, intra-chip hamming distance (intra-chip HD) dropped to 5.46E-06 at nominal conditions.
A Novel Transformer Winding Fault Diagnosis Method Based on Damped Oscillation Wave
Authors: Jin Zhuorui , Sun Jian , Yang Qing , Su Peiyu 
Published: September 2020

Abstract
Winding status is an important part of transformer fault diagnosis. In this paper, the diagnosis test platform includes a reduced-scale transformer with the connection group model of Ynyn0, and its voltage ratio is 10 kV/0.4 kV. The voltage response of single-phase windings of three-winding transformers with varying degrees of short-circuit faults is measured under a damped oscillation wave with an amplitude of 4 kV and an equivalent frequency of 20 kHz. The transfer function of high-voltage phase and its corresponding low-voltage phase in the normal and fault condition is calculated. Three characteristic criterion of the transfer function are analysed in order to diagnose short-circuit faults in single-phase windings of three-winding transformers.
APP Design for Xinjiang Traditional Handicrafts
Authors: Li Siyu , Zhang Yingfang , Wang Yiyu 
Published: September 2020

Abstract
Xinjiang’s handicrafts have a deep historical tradition and a strong rustic atmosphere, and have very strong local characteristics and national styles. However, due to the development of modern scientific and technological civilization, and changes in consumption and lifestyle, practitioners have gradually decreased, fewer and fewer craftsmen, and some complex production techniques are in danger of being lost. Using computer digital technology, Apps on smart mobile devices can effectively expand the reach of the audience, and promote the excellent handicrafts in Xinjiang, which can not only stimulate the vitality of the inheritance of intangible cultural heritage, but also help cultural precision poverty alleviation, give full play to the role of intangible cultural heritage and handicrafts to promote poverty alleviation, promote the employment of nearby people and achieve stable poverty alleviation. In this paper, through the dynamic display of Xinjiang handicraft craftsmanship and appreciation of famous products, the public can get a more detailed understanding of ethnic handicrafts, stimulate people’s interest in them, and promote the protection and development of traditional ethnic handicrafts in Xinjiang.
Design and Production of Digital Interactive Installation for the Cultural Theme of the Belt and Road Initiative
Authors: Yuan Yang , Keda Xu , Yueqi Ning , Xiangyu Zheng 
Published: September 2020

Abstract
Chinese traditional culture provides an endless source of ideas for the digital creative cultural industry. Nowadays, in the cultural industry chain, IP contains a huge potential value. The combination of digital interactive technology and cultural content as well as industry is one of the paths of cultural innovation. This paper takes the Dunhuang caisson patterns under the cultural theme of the Belt and Road Initiative as the subject of expression. By integrating the pattern elements into digital animation and digital interaction, its design and production with the digital interactive installation display form finally show the historical and cultural connotation of the traditional silk road. Through the performance of the interactive installation in the form of digital art display and the application analysis in the design fusion of digital media, this paper explains the construction and implementation of the digital visualization and digital interactive installation of Dunhuang art, aiming to raise awareness. It also hopes to enhance the viewer’s sense of integration and participation with interactive technology of digital media, thus helping the protection and inheritance, dissemination and promotion of traditional culture.
A Multi-Constraint Strategy Algorithm for Stereo Matching
Authors: Li Yingjiang , Zhong Yuzhong , He Libo , Tan Shuqiu 
Published: September 2020

Abstract
An improved multi-constraint stereo matching strategy is proposed herein. First, the original reference images are downsampled to reduce the matching scale. Absolute difference and rank transform are used as the matching cost. We establish the associated disparity map and the matching cost matrix to constrain the matching process. We use the associated disparity map to apply a smoothing constraint on disparity values. We then apply a uniqueness constraint using the associated disparity map and the matching cost matrix. We also apply a continuity constraint to improve the efficiency of the algorithm. Second, for the downsampled disparity map, the disparity map of the original image is obtained by interpolation and filling. Lastly, the final disparity map is obtained using a sub-pixel refinement strategy. The experimental results demonstrate that the algorithm is obviously superior to the traditional method. In addition, a multi-constraint matching process may be extracted as a framework for combination with other algorithms. Compared with the original algorithms, the fusion algorithm improved matching accuracy by 3% on average.
Improving the Quality of Sound Recovered Using the Visual Microphone with Frame-wise Image Denoising Preprocessing
Authors: Choong Ren-Jun , Yap Wun-She , Chai Hum Yan , Kai Tee Yee 
Published: September 2020

Abstract
The visual microphone is a passive remote sound recovery technique by analysing subtle vibrations in a video of an object vibrating due to sound. Multiple research endeavours have been done in improving the quality of the recovered sound, but so far none has been done on investigating the effect of denoising the videos frame by frame prior to the sound recovery using the visual microphone. This work fills in that gap, and evaluates the quality of the recovered sound based on human intelligibility metrics and simple signal-to-noise ratio metrics. Our best results indicated performing image denoising before sound recovery can reduce the noise power by up to 47.16 %, increase the intelligibility by 9.11 % and signal-to-noise ratio by 17.97 %. It is important to perform image denoising before sound recovery when the recorded videos are very noisy.
Interaction of the state and business in the development of the Northern sea route
Authors: Podberezkina O , Vorotnikov A , Doronin N 
Published: September 2020

Abstract
The article presents the concept of sustainable development of the Arctic zone of the Russian Federation through the sustainable development of the Northern Sea Route. A concept has been developed for the effective development of the Northern Sea Route and Arctic projects, and mechanisms are envisaged for their sustainable financing. The Russian programmes for the development of the Arctic region, the Transport Strategy of the Russian Federation, the Sustainable Development Goals of the United Nations, projects of state corporations were considered. The approach of sustainable development of the Northern Sea Route for sustainable development of the Arctic zone of the Russian Federation is proposed.
Arctic Offshore Fields Development: New Challenges & Opportunities at the Current Post-Pandemic Situation
Authors: Fadeev A , Larichkin F , Afanasyev M 
Published: September 2020

Abstract
The situation associated with the spread of the coronavirus COVID-19 in the world has had a significant impact on all sectors of the global economy. The development of the Arctic shelf, as the most capital-intensive direction of the oil and gas complex, was also affected by macroeconomic circumstances that objectively arose during the post-pandemic. At the same time, hydrocarbon production on the shelf of the Arctic implies intensive development of infrastructure, transport, loading of related industries, which allow generating significant multiplicative and complex-forming effects. The development of offshore projects in the Arctic can become a driver, a locomotive of economic development not only in coastal regions, but also in the state as a whole.
Digital transformation prospects for the offshore project supply chain in the Russian Arctic
Authors: Gafurov A R , Skotarenko O V , Nikitin Y A , Plotnikov V A 
Published: September 2020

Abstract
The article provides a comparative digital maturity assessment of two leading petroleum companies licensed for Arctic offshore exploration and production (PAO Gazprom Neft and PAO Rosneft) in a ‘hardware-software-hardware’ succession as well as a comparative analysis with leading practices in offshore project logistics. It identifies approximate cost-cutting limits of digital transformation in Arctic projects and factors limiting cost efficiency of offshore projects in the Russian Arctic. The goal of the study is to identify a potential increase in digital maturity and scope of digital transformation in the Arctic project supply chain in Russia. The study is based on modern approaches to sustainable supply chain management in oil industry and supply chain streamlining for offshore projects. The article identifies a group of factors limiting cost efficiency of Arctic projects, specific to the Russian Arctic. Conclusions and recommendations: the study has shown that the main factor limiting digital transformation of offshore projects in the Russian Arctic is the increasing technological underperformance of oil service companies. To build capacity in digital maturity of the offshore project supply chain, it is necessary to focus on disruptive technologies that could significantly lower the cost of oil production in the Arctic area.
Effect of bamboo waste replacing cottonseed husk on cultivation of Pleurotus geesteranus
Authors: Guan Qin-Lan , Gong Ming-Fu , Lin Tian-Xing , Xu Chen-Hao 
Published: September 2020

Abstract
Bamboo debris are rich in nutrients and suitable for the cultivation of edible fungi. In order to develop the new raw materials for cultivation of Pleurotus geesteranus and the resource utilization of bamboo debris, the mycelial growth, fruiting body growth and economic benefits of P. geesteranus was studied in 9 types of bamboo debris replacement medium formulas (A, B, C, D, E, F, G, H, I) and the cottonseed husk formula cultivated for P. geesteranus in Leshan City as a control (CK). Results shown that formula G was suitable for the growth of P. geesteranus. The composition of the formula G was 64% bamboo debris, 16% cottonseed husk, 8% sawdust, 10% bran, 1% white sugar and 1% plaster. In formula G, the average growth rate of P. geesteranus mycelia was 5.39 mm / d, 7.67 mm / d, and 8.42 mm / d in 10 days, 15 days, and 20 days after inoculation, average bag yield was 0.33 kg / bag, biological efficiency was 89.87%, and the ratio of output value to input value was 3.34.
Application of ISO22000 in the production of Luzhou-flavor liquor
Authors: Yin Le-Bin , Liu Ya-Li , He Ping , Li Le-Le 
Published: September 2020

Abstract
In order to prevent the potential harm of Luzhou-flavor liquor in the process of processing and production, food safety can be guaranteed more effectively. According to the ISO22000 food safety management system standard and the quality management principle of hazard analysis and critical control point (HACCP), the potential hazards in the production of Luzhou-flavor liquor were analyzed, and the corresponding preventive measures and testing methods were proposed. Four critical control points, including raw material selection, process water use, fermentation and distillation, were determined. CLS and corrective measures were determined. At the same time, the operational prerequisite program (OPRP) and HACCP work plan were prepared to construct the food safety management system model of liquor, which conforms to the ISO22000 standard. Food safety hazards will be reduced to a minimum, better ensure the safety of Luzhou-flavor liquor, reduce enterprise management costs, enhance enterprise competitiveness.