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arXiv 2023年

作者： Qi, Ji Aitken, Z.H. Pei, Qingxiang Tan, Anne Marie Z. Zuo, Yunxing Jhon, M.H. Quek, S.S. Wen, T. Wu, Zhaoxuan Ong, Shyue Ping Materials Science and Engineering Program University of California San Diego 9500 Gilman Dr Mail Code 0448 La Jolla CA92093-0448 United States 1 Fusionopolis Way Connexis #16-16 Singapore138632 Singapore Department of NanoEngineering University of California San Diego 9500 Gilman Dr Mail Code 0448 La Jolla CA92093-0448 United States Department of Mechanical Engineering The University of Hong Kong Hong Kong Department of Materials Science and Engineering City University of Hong Kong Hong Kong Hong Kong Institute for Advanced Study City University of Hong Kong Hong Kong

Dual-phase γ-TiAl and α2-Ti3Al alloys exhibit high strength and creep resistance at high temperatures. However, they suffer from low tensile ductility and fracture toughness at room temperature. Experimental studies show unusual plastic behaviour associated with ordinary and superdislocations, making it necessary to gain a detailed understanding on their core properties in individual phases and at the two-phase interfaces. Unfortunately, extended superdislocation cores are widely dissociated beyond the length scales practical for routine first-principles density-functional theory (DFT) calculations, while extant interatomic potentials are not quantitatively accurate to reveal mechanistic origins of the unusual core-related behaviour in either phases. Here, we develop a highly-accurate moment tensor potential (MTP) for the binary Ti-Al alloy system using a DFT dataset covering a broad range of intermetallic and solid solution structures. The optimized MTP is rigorously benchmarked against both previous and new DFT calculations, and unlike existing potentials, is shown to possess outstanding accuracy in nearly all tested mechanical properties, including lattice parameters, elastic constants, surface energies, and generalized stacking fault energies (GSFE) in both phases. The utility of the MTP is further demonstrated by producing dislocation core structures largely consistent with expectations from DFT-GSFE and experimental observations. The new MTP opens the path to realistic modelling and simulations of bulk lattice and defect properties relevant to the plastic deformation and fracture processes in γ-TiAl and α2-Ti3Al dual-phase alloys. © 2023, CC BY.

关键词： Aluminum alloys

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Solution-Processed and Room-Temperature Spin Light-Emitting Diode Based on Quantum Dots/Chiral Metal-Organic Framework Heterostructure

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Advanced Functional materials 2023年第19期33卷

作者： Mustaqeem, Mujahid Chou, Pi-Tai Kamal, Saqib Ahmad, Naveed Lin, Jia-Yu Lu, Yu-Jung Lee, Xing-Hao Lin, Kung-Hsuan Lu, Kuang-Lieh Chen, Yang-Fang Nano-Science and Technology Program Taiwan International Graduate Program Institute of Physics Academia Sinica Taipei106 Taiwan Department of Physics National Taiwan University No. 1 Section 4 Roosevelt Rd Taipei10617 Taiwan Department of Chemistry National Taiwan University No. 1 Section 4 Roosevelt Rd Taipei10617 Taiwan Institute of Chemistry Academia Sinica Taipei115 Taiwan Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei10607 Taiwan Research Center for Applied Sciences Academia Sinica Taipei115024 Taiwan Institute of Physics Academia Sinica Taipei11529 Taiwan

Spin optoelectronics is an indispensable key for the future development of spintronics. In conventional spin light emitting diodes (LEDs), spin-polarized carrier pairs are injected electrically into the light emitting layer and create circularly polarized light (CPL). Generally, spin-polarized carriers are accomplished using ferromagnetic contacts or applying an external magnetic field, which will produce several drawbacks, including low temperature operation, low spin-polarized carriers injection efficiency, etc. To circumvent the existing shortcomings, here, an alternative approach is proposed and achieves spin-polarized LEDs at room temperature based on quantum dots (QDs)/chiral metal-organic framework heterojunction without using ferromagnetic contacts or magnetic fields. The spin-polarized injected layer composed of self-assembled monolayer (SAM)/Chiral-MOF ([Sr(9,10-adc)(DMAc)2]n)) film, which produces spin-polarized holes with spin orientation, determining the polarization and strength of circularly polarized electroluminescence (CP-EL). The spin-QLED emits CP-EL at a rate of 12.24% efficiency, which provides an excellent alternative to generate new functionality for conventional QLEDs. The approach is anticipated to be very useful, enabling to offer a general methodology for generating not yet realized spin optoelectronic devices. © 2023 Wiley-VCH GmbH.

关键词： Room temperature

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Monitoring blood pressure through a single hybrid hemodynamic signal with a flexible optoelectronic patch

Device

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Device 2025年

作者： Zhong, Yizhou Zhang, Yongcao Pu, Jing Wustoni, Shofarul Uribe, Johana Lopez-Larrea, Naroa Marks, Adam McCulloch, Iain Mecerreyes, David Baran, Derya Inal, Sahika Organic Bioelectronics Laboratory Biological and Environmental Science and Engineering Division King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia Materials Science and Engineering Program (MSE) Physical Sciences and Engineering Division (PSE) KAUST Thuwal 23955-6900 Saudi Arabia POLYMAT University of the Basque Country UPV/EHU Avenida Tolosa 72 Guipuzcoa Donostia-San Sebastian 20018 Spain Department of Chemistry University of Oxford Oxford OX1 3TF United Kingdom Andlinger Center for Energy and the Environment and Department of Electrical and Computer Engineering Princeton University Princeton 08544 NJ United States IKERBASQUE Basque Foundation for Science Plaza Euskadi 5 Bilbao 48009 Spain

Hemodynamics, the study of blood flow and circulatory forces, is fundamental for assessing cardiovascular health, disease states, and therapeutic outcomes. Here, we introduce a skin-conformable organic optoelectronic thin-film patch (ePatch) designed to simultaneously capture electrocardiography (ECG) and photoplethysmography (PPG) signals as a single hybrid signal, named the electrocardio-photoplethysmogram (EC-PPG). The ePatch integrates an organic electrochemical transistor (OECT), an organic photodiode, surface-mounted light-emitting diodes, and electrochemical electrodes on a flexible, skin-conforming substrate. By training deep learning models on the hybrid EC-PPG data, we achieved accurate arterial blood pressure estimations, with mean errors of just 1.69 mmHg for systolic and 0.89 mmHg for diastolic blood pressure, outperforming traditional predictions that rely on individual physiological signals as inputs. Our findings underscore the potential of EC-PPG as a compound hemodynamic signal for AI-driven vital sign monitoring and integrated, solution-processable soft electronics for clinical and point-of-care applications. © 2025 The Authors

关键词： DTI-3: Develop electrocardiography electrophysiology flexible electronics OECT OPD organic electrochemical transistor photoplethysmography wearable electronics

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Demonstration of a Bosonic Quantum Classifier with Data Reuploading

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Physical Review Letters 2023年第1期131卷 013601-013601页

作者： Takafumi Ono Wojciech Roga Kentaro Wakui Mikio Fujiwara Shigehito Miki Hirotaka Terai Masahiro Takeoka Program in Advanced Materials Science Faculty of Engineering and Design Kagawa University 2217-20 Hayashi-cho Takamatsu Kagawa 761-0396 Japan JST PRESTO 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan Department of Electronics and Electrical Engineering Keio University 3-14-1 Hiyoshi Kohoku-ku Yokohama 223-8522 Japan Advanced ICT Research Institute National Institute of Information and Communications Technology (NICT) Koganei Tokyo 184-8795 Japan Advanced ICT Research Institute National Institute of Information and Communications Technology 588-2 Iwaoka Nishi Kobe 651-2492 Japan

In a single qubit system, a universal quantum classifier can be realized using the data reuploading technique. In this study, we propose a new quantum classifier applying this technique to bosonic systems and successfully demonstrate it using a silicon-based photonic integrated circuit. We established a theory of quantum machine learning algorithm applicable to bosonic systems and implemented a programmable optical circuit combined with an interferometer. Learning and classification using part of the implemented optical quantum circuit with uncorrelated two photons resulted in a classification with a success probability of 94±0.8% in the proof of principle experiment. As this method can be applied to an arbitrary two-mode N-photon system, further development of optical quantum classifiers, such as extensions to quantum entangled and multiphoton states, is expected in the future.

关键词： Machine learning Optical quantum information processing Quantum algorithms

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H2o2-Free Catalytic Dye Degradation at Dye/Night Circumstances Using Cus@Au Heterostructures Decorating on Mos2 Nanoflowers

SSRN

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SSRN 2024年

作者： Hsiao, Po-Hsuan Lee, Yu-Shen Lin, Kuan-Han Liao, Pin-Chao Juan, Joon Ching Chen, Chia-Yun Department of Materials Science and Engineering National Cheng-Kung University Tainan701 Taiwan Program on Semiconductor Packaging and Testing Academy of Innovative Semiconductor and Sustainable Manufacturing National Cheng Kung University Tainan70101 Taiwan Nanotechnology & Catalysis Research Centre Institute for Advanced Studies University of Malaya Kuala Lumpur50603 Malaysia Research Center National Cheng Kung University No.1 University Road Tainan701 Taiwan

Catalytic remediation of industrial organic pollutants is considered the effective mitigation of increasing risks from aqueous contaminations composed of hazardous substances. The seek for in-situ environmental remediation is highly demanded to deal with organic contaminations from on-site, instant and fulltime treatment without the need of removing the contaminated sources for ex-situ remediation is highly demanded. In this work, by means of combining the strategies of daytime and dark degradation capabilities of organic dyes, the MoS2/Au@CuS hybrid catalysts resembling semiconductor/metal/semiconductor junction features underline the generation of hydroxyl radicals, and force to speed up the oxidative removal of organic dyes during light-on and light-off conditions in both scenarios. We reveal that such circumstance exists when programming the environment in the sequence of light-on/light-off condition, which actively click the generation of H2O2 and strategically accelerate the degradation kinetics, offering an additional opportunity for promoting catalytic degradation of hazardous organic dyes with whole day feasibility. © 2024, The Authors. All rights reserved.

关键词： Degradation

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Carbon-emcoating architecture boosts lithium storage of Nb_(2)O_(5)

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science China materials 2021年第5期64卷 1071-1086页

作者： Qing Ji Zhuijun Xu Xiangwen Gao Ya-Jun Cheng Xiaoyan Wang Xiuxia Zuo George Z.Chen Binjie Hu Jin Zhu Peter G.Bruce Yonggao Xia Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201China The University of Nottingham Ningbo China Ningbo 315100China University of Chinese Academy of Sciences Beijing 100049China Department of Materials University of OxfordParks RdOX13PHOxfordUnited Kingdom Materials Science and Engineering Program and Texas Materials Institute University of Texas at AustinAustinTX 78712USA University of Nottingham University ParkNottingham NG72RDUnited Kingdom The Henry Royce Institute Parks RoadOxford OX13PHUnited Kingdom The Faraday Institution Quad OneBecquerel AvenueHarwell CampusDidcot OX11 OR1United Kingdom Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Intercalation transition metal oxides (ITMO)have attracted great attention as lithium-ion battery negative electrodes due to high operation safety,high capacity and rapid ion ***,the intrinsic low electron conductivity plagues the lifetime and cell performance of the ITMO negative *** we design a new carbon-emcoating architecture through single CO_(2)activation treatment as demonstrated by the Nb_(2)O_(5)/C *** structure engineering of the carbon-emcoating Nb_(2)O_(5)/C nanohybrid is achieved in terms of porosity,composition,and crystallographic *** carbon-embedding Nb_(2)O_(5)/C nanohybrids show superior cycling and rate performance compared with the conventional carbon coating,with reversible capacity of 387 m A h g(-1)at 0.2 C and 92%of capacity retained after 500cycles at 1 *** electrochemical mass spectrometry(DEMS) indicates that the carbon emcoated Nb_(2)O_(5)nanohybrids present less gas evolution than commercial lithium titanate oxide during *** unique carbon-emcoating technique can be universally applied to other ITMO negative electrodes to achieve high electrochemical performance.

关键词： niobium pentoxide/carbon nanohybrids mesoporous CO_(2)activation emcoating lithium-ion battery negative electrode

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Chemical Structures and Stability of Amine Plasma Polymers Deposited on Porous Hydroxyapatite Artificial Bone with Bipolar Pulsed Discharges

SSRN

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SSRN 2024年

作者： Harumningtyas, Anjar Anggraini Ito, Tomoko Michlíček, Miroslav Kodama, Joe Nečas, David Kita, Hidekazu Kaito, Takashi Zajíčková, Lenka Hamaguchi, Satoshi International Priority Graduate Program on Applied and Engineering Physics Division of Precision Engineering and Applied Physics Osaka University 2-1 Yamadaoka Suita Osaka565-0871 Japan Division of Materials and Manufacturing Science Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka565-0871 Japan Jalan Babarsari Kotak Pos 6101 ykbb Yogyakarta55281 Indonesia Department of Condensed Matter Physics Faculty of Science Masaryk University Kotlarska 2 Brno61137 Czech Republic Department of Orthopaedic Surgery Osaka University Graduate School of Medicine Osaka565-0871 Japan CEITEC Central European Institute of Technology Brno University of Technology Purkyňova 123 Brno61200 Czech Republic

A recent in vivo study by Kodama et al. shows that porous artificial bones coated with aminecontaining polymers deposited in a plasma-enhanced chemical vapour deposition (PECVD) process with high-voltage, low-frequency bipolar pulsed discharges significantly enhanced bone regeneration. This article reports the chemical and physical properties of amine plasma polymers (PPs) formed under the same deposition conditions, including the film stability for up to two months, the effects of sterilization on the chemical compositions of the films, and the penetration of amine PPs into the inner surfaces of interconnected microscopic pores of the amine-PP-coated porous artificial bone. It was found that, immediately after the plasma polymerization process, approximately 15% of nitrogen atoms on the surface of the deposited amine PP formed primary amines but the number decreased to approximately 5% over one month if the sample was exposed to ambient air or sterilized by autoclaving or ethylene oxide gas. Nitriles ( –CN) were also detected in the deposited amine PPs. Molecular dynamics simulations of simplified deposition processes suggest that the observed nitriles were likely to be formed by the incorporation of gas-phase cyano radicals that were also observed in the experiments of this study. © 2024, The Authors. All rights reserved.

关键词： Hydroxyapatite

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Polyether Sulfone Membrane Surface Modification by Electrospun Polysulfone Hybrid Nanocomposite Fibers for Separating Oil/Water Emulsion

SSRN

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SSRN 2022年

作者： Ponnamma, Deepalekshmi Elgawady, Yara Hassan, Mohamed K. Adham, Samer Al-Maas, Mashael Alamgir, Karim Al-Maadeed, Mariam Al Ali Center for Advanced Materials Qatar University P. O. Box 2713 Doha Qatar ConocoPhilips Global Water Sustainability Center Qatar Science and Technology Park Doha Qatar Department of Chemical & Biomolecular Engineering University of Houston S222 Engineering Bldg 1 4726 Calhoun Rd HoustonTX77204 United States Materials Science and Technology Program Qatar University P. O. Box 2713 Doha Qatar

Electrospun fibers of polysulfone (PSf)/iron oxide (FeO)/halloysite nanotubes (HNT) nanocomposite was applied to modify the polyether sulfone (PES) standard membrane support surface for developing highly efficient oil/water emulsion separating membranes. This facile and simple spinning process for shorter periods ensured nanocomposite coatings on the standard PES membranes and allows better oil/water separation process. Moderate hydrophilicity of the membranes results in the higher permeate flux and quicker separation performance. Good regeneration ability and separation performance were achieved for the mechanically stronger membranes as proved from the ultrafiltration and mechanical testing methods. The surface contact angle values are investigated for the hydrophilic nature of the membranes and the under oil angle values show promising results. © 2022, The Authors. All rights reserved.

关键词： Emulsification

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Precision measurements of muonium and muonic helium hyperfine structure at J-PARC

arXiv

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arXiv 2025年

作者： Strasser, Patrick Abe, Mitsushi Asai, Kanta Fukumura, Seiso Fushihara, Mahiro Goto, Yu Ino, Takashi Iwai, Ryoto Kanda, Sohtaro Kawamura, Shiori Kitaguchi, Masaaki Nishimura, Shoichiro Oku, Takayuki Okudaira, Takuya Powell, Adam Sasaki, Ken-Ichi Shimizu, Hirohiko M. Shimomura, Koichiro Tada, Hiroki Torii, Hiroyuki A. Yamanaka, Takashi Yamazaki, Takayuki 1-1 Oho Ibaraki Tsukuba305-0801 Japan Materials and Life Science Division J-PARC Center 2-4 Shirakata Tokai-mura Naka-gun Ibaraki319-1195 Japan Materials Structure Science Program Graduate Institute for Advanced Studies SOKENDAI 1-1 Oho Ibaraki Tsukuba305-0801 Japan 1-1 Oho Ibaraki Tsukuba305-0801 Japan Graduate School of Science Nagoya University Furo-cho Chikusa-ku Aichi Nagoya464-8601 Japan Department of Physics Niigata University 8050 Ikarashi 2-no-cho Nishi-ku Niigata-shi Niigata950-2181 Japan Facility for Rare Isotope Beams Michigan State University 640 South Shaw Lane East LansingMI48824 United States Kobayashi-Maskawa Institute Nagoya University Furo-cho Chikusa-ku Aichi Nagoya464-8601 Japan 2-4 Shirakata Tokai-mura Naka-gun Ibaraki319-1195 Japan Graduate School of Science and Engineering Ibaraki University 2-1-1 Bunkyo Ibaraki Mito310-8512 Japan Department of Physics and Astronomy University of Calgary 2500 University Drive NW CalgaryABT2N 1N4 Canada School of Science The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-0033 Japan Faculty of Arts and Science Kyushu University 744 Motooka Nishi Fukuoka819-0395 Japan

At the J-PARC Muon science Facility (MUSE), the MuSEUM collaboration is now performing new precision measurements of the ground state hyperfine structure (HFS) of both muonium and muonic helium atoms. High-precision measurements of the muonium ground-state HFS are recognized as one of the most sensitive tools for testing bound-state quantum electrodynamics theory to precisely probe the standard model and determine fundamental constants of the positive muon magnetic moment and mass. The same technique can also be employed to measure muonic helium HFS, obtain the negative muon magnetic moment and mass, and test and improve the theory of the three-body atomic system. Measurements at zero magnetic field have already yielded more accurate results than previous experiments for both muonium and muonic helium atoms. High-field measurements are now ready to start collecting data using the world’s most intense pulsed muon beam at the MUSE H-line. We aim to improve the precision of previous measurements ten times for muonium and a hundred times or more for muonic helium. We review all the key developments for these new measurements, focusing on the high-field experiment, and report the latest results and prospects. Copyright © 2025, The Authors. All rights reserved.

关键词： Microwave spectroscopy

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Valley lifetimes of conduction band electrons in monolayer WSe2 13

Valley lifetimes of conduction band electrons in monolayer W...

引用

Spintronics XIII 2020

作者： Ersfeld, Manfred Volmer, Frank Rathmann, Lars Kotewitz, Luca Heithoff, Maximilian Lohmann, Mark Yang, Bowen Watanabe, Kenji Taniguchi, Takashi Bartels, Ludwig Shi, Jing Stampfer, Christoph Beschoten, Bernd 2nd Institute of Physics JARA-FIT RWTH Aachen University Aachen52074 Germany Department of Physics and Astronomy University of California RiversideCA92521 United States Department of Chemistry and Materials Science and Engineering Program University of California RiversideCA92521 United States Research Center for Functional Materials National Institute for Materials Science 1-1 Namiki Tsukuba Ibaraki305-0044 Japan International Center for Materials Nanoarchitectonics National Institute for Materials Science 1-1 Namiki Tsukuba Ibaraki305-0044 Japan Forschungszentrum Jülich Jülich52425 Germany

ISBN: (数字)9781510637474

ISBN: (纸本)9781510637467

One of the main tasks in the investigation of 2-dimensional transition metal dichalcogenides is the determination of valley lifetimes. In this work, we combine time-resolved Kerr rotation with electrical transport measurements to explore the gate-dependent valley lifetimes of free conduction band electrons of monolayer WSe2. When tuning the Fermi energy into the conduction band we observe a strong decrease of the respective valley lifetimes which is consistent with both spin-orbit and electron-phonon scattering. We explain the formation of a valley polarization by the scattering of optically excited valley polarized bright trions into dark states by intervalley scattering. Furthermore, we show that the conventional time-resolved Kerr rotation measurement scheme has to be modified to account for photo-induced gate screening effects. Disregarding this adaptation can lead to erroneous conclusions drawn from gate-dependent optical measurements and can completely mask the true gatedependent valley dynamics. © 2020 SPIE.

关键词： Transition metals

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