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2022 RIVF International Conference on Computing and Communication Technologies, RIVF 2022

作者： Lukman, Selvi Yunazwin Nazaruddin, Yul Joelianto, Endra Ai, Bo Institut Teknologi Bandung Doctoral Program of Engineering Physics Faculty of Industrial Technoloy Bandung Indonesia Instrumentation Control Research Group Institut Teknologi Bandung Departement of Engineering Physics Building 2nd floor Jl. Ganesha 10 Bandung Indonesia National Center for Sustainable Transportation Technology Crcs Building 2nd floor Jl. Ganesha 10 Bandung Indonesia Safety Beijing Jiaotong University State Key Laboratory of Rail Traffic Control Beijing China

ISBN: (纸本)9781665461665

A reliable transmission link for High-speed rail scenarios (HSR) requires denser networks as the unique characteristics of HSR propagation emerged. In this study, we present a performance analysis of the Received Signal Level (RSL) for HSR in the free space environment as the most favorable propagation. To achieve an excellent reception, the study of path loss from the implementation of optimization technique is utilized as the most important property in the analysis. The findings demonstrate a satisfying RSL result that was achieved from the optimized path loss values. Hence it will benefit the HSR network designers to obtain a reliable transmission link in their communication's domain. © 2022 IEEE.

关键词： Railroad transportation

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Experimental demonstration of optical Bloch oscillation in electromagnetically induced photonic lattices

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Fundamental Research 2022年第3期2卷 401-404页

作者： Zhaoyang Zhang Shaohuan Ning Hua Zhong Milivoj RBelić Yiqi Zhang Yuan Feng Shun Liang Yanpeng Zhang Min Xiao Key Laboratory for Physical Electronics and Devices of the Ministry of Education&Shaanxi Key Lab of Information Photonic Technique School of Electronic Science and EngineeringFaculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’anShaanxi 710049China Science Program Texas A&M University at QatarP.O.Box 23874DohaQatar Department of Physics University of ArkansasFayettevilleArkansas 72701USA National Laboratory of Solid State Microstructures and School of Physics Nanjing UniversityNanjingJiangsu 210093China

The optical Bloch oscillation(OBO)is an optical-quantum analogy effect that is significant for light field manipulations,such as light beam localization,oscillation and *** an intra-band oscillation,OBO was important for optical investigations in photonic lattices and atomic vapors over an extended period of ***,OBO in reconfigurable platforms is still an open topic,even though tunability is highly desired in developing modern photonic *** we theoretically establish and experimentally demonstrate OBO in an electromagnet-ically induced photonic lattice with a ramping refractive index,established in a coherently-prepared three-level 85 Rb atomic vapor under the electromagnetically induced transparency *** is achieved by interfering two coupling beams with Gaussian profiles and launching a probe beam that exhibits OBO within the resulting *** induced reconfigurable photonic lattice possesses a transverse gradient,due to the innate edges of Gaussian beams,and sets a new stage for guiding the flow of light in periodic photonic *** results should motivate better understanding of peculiar physical properties of an intriguing quantum-optical analogy in an atomic setting.

关键词： Optical bloch oscillation Electromagnetically induced transparency Photonic lattice Atomic coherence effect Beam dynamics

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Ronchigram Simulation and Aberration Correction Training Using ***

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Microscopy Today 2022年第5期30卷 40-43页

作者： Sung, Suk Hyun Schnitzer, Noah Millsaps, William Kourkoutis, Lena F Hovden, Robert Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109 Department of Materials Science and Engineering Cornell University Ithaca NY 14853 Engineering Physics Program University of Michigan Ann Arbor MI 48109 School of Applied and Engineering Physics Cornell University Ithaca NY 14853 Kavli Institute at Cornell for Nanoscale Science Cornell University Ithaca NY 14853

This article introduces a training simulator for electron beam alignment using Ronchigrams. The interactive web application,***, is an advanced educational tool aimed at making scanning transmission electron microscopy (STEM) more accessible and open. For experienced microscopists, the tool offers on-hand quantification of simulated Ronchigrams and their resolution limits.

关键词： Ronchigram scanning transmission electron microscopy aberration correction image simulation software

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Designing Classical Header Bits for Quantum Wrapper Networking with O-band Quantum Signal

Designing Classical Header Bits for Quantum Wrapper Networki...

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2023 Laser Science, LS 2023

作者： Gül, G. On, M. Berkay Singh, S.K. Proietti, R. Kanter, G.S. Yoo, S.J.B. Kumar, P. Graduate Program in Applied Physics Northwestern University 2145 Sheridan Road EvanstonIL60208 United States Department of Electrical and Computer Engineering University of California Davis DavisCA95616 United States Department of Electronics and Communication Eng. Indian Institute of Technology Roorkee247667 India Department of Electronics and Telecommunications Engineering Politecnico di Torino Italy Center for Photonic Communication and Computing Dept. of Electrical and Computer Eng. Northwestern University EvanstonIL60208 United States

We investigate the impact of wavelength choice for the classical headers in quantum wrapper networking with O-band quantum payload. We show that a C-band header performs substantially better than an O-band header. ... 详细信息

关键词： Quantum electronics

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Optimization of Printing Parameters for Printing of Ordinary Portland Cement using a Custom-made 3D Printer 21

Optimization of Printing Parameters for Printing of Ordinary...

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21st International Union of Materials Research Societies International Conference in Asia, IUMRS-ICA 2021

作者： Chaiyotha, D. Pinitsoontorn, S. Chindaprasirt, P. Payakaniti, P. Materials Science and Nanotechnology Program Department of Physics Faculty of Science Khon Kaen University Khon Kaen40002 Thailand NANOTEC -KKU RNN on Nanomaterials Research and Innovation for Energy Khon Kaen University Khon Kaen40002 Thailand Sustainable Infrastructure Research and Development Center Department of Civil Engineering Faculty of Engineering Khon Kaen University Khon Kaen40002 Thailand

3D printing techniques have recently received a lot of attention as a new technique for forming construction materials, due to benefits over the traditional cast. In this research, ordinary Portland cement (OPC) paste was formed using a 3D extruder. Optimized mixture and printing parameters were determined. Compressive strengths of the printed and the traditionally casted OPC paste were measured after the specimens were cured in saturated limewater for 7, 14 and 28 days, respectively. The result led to the conclusion that the most suitable mixture for printing was achieved at the water to cement ratio of 0.35 with water reducing and retarding admixture added. The optimum printing parameters were the printing speed of 60 mm/min and the feed rate of 120 ml/s. Compressive strength of the 5 x 5 x 5 cm3 hollowed and filled cubic printed specimens, were compared with casted cement paste. The strengths of both the printed and the casted specimens were higher with longer curing durations. The highest levels of strength were achieved at 12.36 MPa on the printed specimens and 80.88 MPa when testing the casted samples. © Published under licence by IOP Publishing Ltd.

关键词： 3D printers

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Design and Calibration of Temperature Monitoring Device for a Cold Box with Hydrated Salts as Phase Change Material (PCM) 2nd

Design and Calibration of Temperature Monitoring Device for ...

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2nd International Conference on Experimental and Computational Mechanics in engineering, ICECME 2020

作者： Gunawati Nasruddin, M.N. Setiawan, Adi Sebayang, K. Makruf, A. Zakaria Doctoral Program in Physics Faculty of Mathematics and Natural Sciences Universitas Sumatera Utara Padang Bulan Medan20155 Indonesia Department of Physics Faculty of Mathematics and Natural Sciences Universitas Syiah Kuala Darussalam Banda Aceh23111 Indonesia Mechanical Engineering Department Faculty of Engineering Universitas Malikussaleh Bukit Indah Lhokseumawe24352 Indonesia

ISBN: (纸本)9789811607356

Development of Phase Change Material (PCM) for cold storage application requires devices for monitoring the changes in temperature during the charging and discharging processes. This device helps to understand the behaviour of PCM during the solidifying-liquefying process and predicts how long PCM can store the energy. The aims of this study were to design and prepare a temperature monitoring system using DS18B20 sensors for recording and displaying the temperature changes at six points within a box cooled by salt hydrate PCM. Thermistor types were used as temperature gauges due to their lower prices and flexibility. Six DS18B20 sensors were programmed with Arduino Uno as microcontroller. Output temperature measurement values in degrees Celsius were stored in a computer using PLX-DAQ software. Calibration of temperature measurement was performed by comparing the measurement results of the DS18B20 sensor and a commercial thermometer data logger using the Root Mean Square Error (RMSE) method. Results show that the first DS18B20 sensor was RMSE 1.75, the second sensor was 0.98, the third sensor was 1.2, the fourth sensor was 1.21, the fifth sensor was 1.24, and the sixth sensor was 1.7. The changes in temperature measured by the DS18B20 sensor were successfully recorded for three days without any interruption. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

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On the Mechanism Underlying the Distinct Activities of Rutile-Type Metal Oxides Toward Methane Activation 4

On the Mechanism Underlying the Distinct Activities of Rutil...

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4th engineering physics International Conference 2023, EPIC 2023

作者： Mahyuddin, Muhammad Haris Naufal, Farrel Dzaudan Afifah, Hasna Research Group of Advanced Functional Materials Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Research Center for Nanoscience and Nanotechnology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Doctoral Program of Engineering Physics Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia

We report herein a density functional theory study on the C-H bond activation of CH4 over several rutile-type metal oxide catalysts, namely IrO2(110), TiO2(110), and βMnO2(110) surfaces. We find that CH4 is strongly chemisorbed on the IrO2(110) surface, which distorts the CH4 geometry. Together with a strong thermodynamic driving force derived from the formation of Ir-CH3 bond, the H-CH3 bond activation proceeds with a negative barrier. In contrast, a weakly chemisorbed CH4 molecule on the TiO2(110) surface cannot proceed to the C-H bond cleavage due to a high activation barrier and a low thermodynamic driving force. The reaction on the β-MnO2(110) surface, on the other hand, is found to begin with a weak CH4 physisorption, followed by the C-H bond scission with a low activation barrier. However, here, the formation ***3 radical is more preferred than the Mn-CH3 bond formation, most possibly due to the electrophilic nature of MnO that suitably renders the catalyst as a perfect electron acceptor for the H-atom abstraction of CH4. With such low barrier and stability of ***3 formation, we suggest β-MnO2(110) as a potential catalyst that is good not only for the H-CH3 bond activation but also for the methanol formation. © 2023 Institute of physics Publishing. All rights reserved.

关键词： Catalysts

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Polarization and orientation dependent optical properties in Czochralski-grown transition metal doped β-Ga2O3 14

Polarization and orientation dependent optical properties in...

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Oxide-based Materials and Devices XIV 2023

作者： Dutton, Benjamin L. Remple, Cassandra Jesenovec, Jani Ghandiparsi, Soroush Gottlieb, Miranda S. Varley, Joel B. Voss, Lars F. McCluskey, Matthew D. McCloy, John S. Institute of Materials Research Washington State University PullmanWA99164-2711 United States Materials Science & Engineering Program Washington State University PullmanWA99164-2711 United States Dept. of Physics and Astronomy Washington State University PullmanWA99164-2814 United States Lawrence Livermore National Laboratory LivermoreCA94551-0808 United States

ISBN: (纸本)9781510659490

Properties of monoclinic β-Ga2O3 are strongly dependent upon orientation. In the case of optical properties, polarization can reveal differences in optical bandgap and absorptions related to transition metal ions. This phenomenon is known as pleochroism and has been extensively studied in minerology. β-Ga2O3 bulk single crystals doped with Zn, Mn, Cr, or Cu were grown by the Czochralski and vertical gradient freeze methods. Ultraviolet-visible-near infrared spectroscopy and photoluminescence (PL) revealed polarization- and orientation-dependent optical absorptions in β-Ga2O3. Crystals were annealed in reducing and oxidizing environments in an attempt to alter the intensities of absorptions characteristic to the different transition metal oxidation states in a given ligand field. Visible pleochroism was strongest in (001) oriented Mn-doped samples as shown by polarized optical microscopy. All samples were electrically insulating, indicative of acceptor doping, aside from Cr-doped samples where Cr acts as a deep donor. © 2023 SPIE.

关键词： Polarization

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International Conference of Computer and Informatics engineering (IC2IE)

作者： Wandy Wandy Kusworo Adi Media Anugerah Ayu Doctoral Program of Information Systems School of Postgraduate Studies Diponegoro University Semarang Indonesia Department of Physics Faculty of Science and Mathematics Diponegoro University Semarang Indonesia Department of Computer Science Faculty of Engineering and Technology Sampoerna University South Jakarta Indonesia

ISBN: (数字)9798331505530

ISBN: (纸本)9798331505547

Full-marathon and Half-marathon distances are categorized as road running. Full-marathon running is becoming increasingly popular, and Half-marathon is increasing worldwide in both sexes and all age groups. Some aspects might relate to Full-marathon and Half-marathon running performance during training and races. Technology also plays an essential role in supporting runners and running races. Technology like artificial intelligence (AI) now supports the running athlete, not only predicting performance and results. It can also be used later to help the coach generate training programs for the athlete. This research aimed to find many aspects of marathons and performance and analyze them to see if artificial intelligence could later support them. It used secondary data and a systematic literature review proposed by Kitchenham. Out of the 58 articles, 21 of them (36.21%) received a score of 1 from Q1. Additionally, 19 articles (32.76%) received a score of 1 from both Q2 and Q3. Among the 58 articles, 9 (15.52%) received a total score of 3, with all three Q1, Q2, and Q3 scores being 1. This indicates that artificial intelligence will likely support the content of these nine articles. Several factors were also discovered to be connected to marathons and athletic performance. These findings suggested that additional investigation into marathons and performance, later backed by artificial intelligence, remained pertinent and essential.

关键词： Training Roads Artificial intelligence Informatics

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Deep potentials for materials science

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Materials Futures 2022年第2期1卷 89-115页

作者： Tongqi Wen Linfeng Zhang Han Wang Weinan E David J Srolovitz Department of Mechanical Engineering The University of Hong KongHong KongHong Kong Special Administrative Region of China DP Technology BeijingPeople’s Republic of China AI for Science Institute BeijingPeople’s Republic of China Laboratory of Computational Physics Institute of Applied Physics and Computational MathematicsBeijingPeople’s Republic of China HEDPS CAPTCollege of EngineeringPeking UniversityBeijingPeople’s Republic of China School of Mathematical Sciences Peking UniversityBeijingPeople’s Republic of China Department of Mathematics and Program in Applied and Computational Mathematics Princeton UniversityPrincetonNJUnited States of America International Digital Economy Academy(IDEA) ShenzhenPeople’s Republic of China

To fill the gap between accurate(and expensive)ab initio calculations and efficient atomistic simulations based on empirical interatomic potentials,a new class of descriptions of atomic interactions has emerged and been widely applied;*** learning potentials(MLPs).One recently developed type of MLP is the deep potential(DP)*** this review,we provide an introduction to DP methods in computational materials *** theory underlying the DP method is presented along with a step-by-step introduction to their development and *** also review materials applications of DPs in a wide range of materials *** DP Library provides a platform for the development of DPs and a database of extant *** discuss the accuracy and efficiency of DPs compared with ab initio methods and empirical potentials.

关键词： deep potential atomistic simulation machine learning potential neural network

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