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Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS)

作者： Kaho Kawasaki Yasuko Koshiba Kouki Akaike Qingshuo Wei Masahiro Funahashi Kenji Ishida Shohei Horike Department of Chemical Science and Engineering Graduate School of Engineering Kobe University JAPAN Research Center for Membrane and Film Technology Kobe University JAPAN Nanomaterials Research Institute National Institute of Advanced Industrial Science and Technology (AIST) JAPAN Graduate School of Pure and Applied Science University of Tsukuba JAPAN Department of Applied Quantum Physics and Nuclear Engineering Faculty of Engineering Kyushu University JAPAN Center for Environmental Management Kobe University Japan

ISBN: (数字)9798350380200

ISBN: (纸本)9798350380217

Carbon nanotube (CNT)-based thermoelectric (TE) materials have the potential to be used for the recovery of low-grade thermal energy. As TE devices are placed on heat sources, thermal stability of the materials-especially, retention ability of the doped states of CNTs- is one of the most important issues. Here, we show that the dopant selection via coordination chemistry allowed for establishing the stable p-doped CNTs lasting for more than 2 years at $100^{\circ} \mathrm{C}$ in air. Based on the less fluctuation of TE power factors of the doped CNTs, our results offer a promising avenue for creating CNT-based TE devices.

关键词： Reactive power Thermal expansion Thermoelectric materials Chemistry Power system stability Conductivity Carbon nanotubes Thermal sensors Thermal stability Thermal energy

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Influence of erbium on structural,and charged particles,photons,and neutrons shielding properties of Ba_(1-x)Er_(x)SnO_(3) perovskite ceramics

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Journal of Rare Earths 2024年第4期42卷 724-732页

作者： M.K.h.Hamad Nidal Dwaikat M.H.A.Mhareb M.I.Sayyed R.M.Hamad Y.S.M.Alajerami M.A.Almessiere Gameel Saleh Ahmad Hussein Alomari K.A.Ziq Department of Basic Sciences School of Social and Basics SciencesAl Hussein Technical UniversityKing Abdullah II St 242Amman11831Jordan Department of Physics College of Engineering and PhysicsInterdisciplinary Research Center for Advanced MaterialsKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Department of Physics College of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Basic and Applied Scientific Research Center Imam Abdulrahman Bin Faisal UniversityP0.Box 1982Dammam31441Saudi Arabia Department of Physics Faculty of ScienceIsra UniversityAmman11622Jordan Department of Nuclear Medicine Research Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Arabia Medical Imaging Department Applied Medical Sciences FacultyAl Azhar University-Gaza CityPo.Box 1277Palestine Department of Biophysics Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box1982Dammam 31441Saudi Arabia Department of Biomedical Engineering College of EngineeringImam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Energy&Minerals Regulatory Commission Amman11821Jordan

Five perovskite ceramics samples of Ba_(1-x)Er_(x)SnO_(3) with x=0.00,0.05,0.10,0.15,and 0.20 were synthesized using the conventional solid-state reaction *** prepared samples were characterized by X-ray diffraction(XRD),Fourier transforms infrared(FTIR),and UV-Vis *** shielding properties against ionizing radiation were also *** XRD analysis shows the perovskite cubic structure as the major phase in all *** FTIR reveals a distinctive band around 614-620 cm^(-1) ascribed to the antisymmetric O-Sn-O ***-Vis spectroscopy was used to determine the bandgap according to diffuse reflectance,and the results display a fixed enhancement in the bandgap from 3.2 to 3.3 eV for all ***-ray shielding properties of the synthesized samples were experimentally measured and compared with XCOM computational *** relative differences(Δ,%)between experimental and theo retical values are low and fall within the 0.446%-7.10%*** addition of Er leads to the enhanced density,neutron,and gamma shielding *** contrast,charged particles’shielding parameters gradually reduce with rising Er *** results suggest that Ba_(1-x)Er_(x)SnO_(3) samples can be used in different radiation shielding applications.

关键词： Perovskite Ceramics Gamma ray shielding Mass stopping power Rare earths

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High-Flux Neutron Generator Based on Laser-Driven Collisionless Shock Acceleration

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Physical Review Letters 2023年第2期131卷 025101-025101页

作者： Y. L. Yao S. K. He Z. Lei T. Ye Y. Xie Z. G. Deng B. Cui W. Qi L. Yang S. P. Zhu X. T. He W. M. Zhou B. Qiao Center for Applied Physics and Technology HEDPS and State Key Laboratory of Nuclear Physics and Technology School of Physics Peking University Beijing 100871 China Science and Technology on Plasma Physics Laboratory Research Center of Laser Fusion China Academy of Engineering Physics (CAEP) Mianyang 621900 China Institute of Applied Physics and Computational Mathematics Beijing 100094 China Frontiers Science Center for Nano-optoelectronic Peking University Beijing 100094 China

A novel compact high-flux neutron generator with a pitcher-catcher configuration based on laser-driven collisionless shock acceleration (CSA) is proposed and experimentally verified. Different from those that previously relied on target normal sheath acceleration (TNSA), CSA in nature favors not only acceleration of deuterons (instead of hydrogen contaminants) but also increasing of the number of deuterons in the high-energy range, therefore having great advantages for production of high-flux neutron source. The proof-of-principle experiment has observed a typical CSA plateau feature from 2 to 6 MeV in deuteron energy spectrum and measured a forward neutron flux with yield 6.6×107 n/sr from the LiF catcher target, an order of magnitude higher than the compared TNSA case, where the laser intensity is 1019 W/cm2. Self-consistent simulations have reproduced the experimental results and predicted that a high-flux forward neutron source with yield up to 5×1010 n/sr can be obtained when laser intensity increases to 1021 W/cm2 under the same laser energy.

关键词： High-energy-density plasmas Laser driven ion acceleration Laser-plasma interactions Neutron physics nuclear reactions Neutrons Multiscale modeling nuclear data analysis & compilation

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Simulation Analysis of 35 Mev/ 2 Ma@ 70 Kw Electron Accelerator Driven White Neutron Source Target

SSRN

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SSRN 2024年

作者： Wu, Yiyuan Cai, Bowen Zou, Jijun Yang, Yiwei Li, Jinhai Wan, Jiangfeng Peng, Xincun Liu, Yu Xiao, Dexin Tang, Bin Jiangxi Province Key Laboratory of Nuclear Physics and Technology East China University of Technology Nanchang330013 China Engineering Research Center of Nuclear Technology Application East China Institute of Technology Ministry of Education Nanchang330013 China School of Nuclear Science and Engineering East China University of Technology Nanchang330013 China Institute of Applied Electronics China Academy of Engineering Physics Mianyang621000 China

The white neutron source driven by an electron accelerator utilizes a pulsed electron beam to bombard a target, producing neutrons through photoneutron reactions. This type of photoneutron reaction-based white neutron source offers advantages such as compact structure, low cost, capability of generating ultra-short pulse, and wide applications in the resonance energy region, effectively complementing reactor neutron sources and spallation neutron sources. The development of high-current, high-power electron accelerator-driven white neutron sources is of significant importance for neutron science research and nuclear technology applications. However, constructing such a strong-current, high-power electron accelerator-driven white neutron source is complex, and a lot of theoretical simulation work is needed in the early stage to guide the obtaining of a set of optimal source parameters, as well as thermal analysis of the electron bombardment to address target cooling issues. Therefore, in this paper, MCNP is used to comprehensively simulate and optimize the target station of 35 MeV/ 2 mA@ 70 kW electron accelerator driven white neutron source. Including the structural design of the target, the study of neutron physics parameters, distribution of electron energy deposition, and distribution of radiation damage caused by electrons. In addition, thermal analysis of the target is conducted using the finite element analysis software ANSYS. The research results of this paper will provide important references and bases for guiding the engineering design of high-power electron accelerator-driven white neutron source target stations. © 2024, The Authors. All rights reserved.

关键词： Radiation damage

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Strain Rate Effects of Dynamic-Driven High Dislocation Densities in the Ultra-High Strength Ferrium S53 Steel

SSRN

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SSRN 2024年

作者： Zheng, Shujing Liu, Xiaoru Fang, Leiming Xiao, Likang Guo, Liang Feng, Huiyu Liu, Qian Xiong, Zhengwei Gao, Zhipeng Zhu, Wenkun Joint Laboratory for Extreme Conditions Matter Properties School of Mathematics and Physics Southwest University of Science and Technology China Institute of Physics Nuclear and Chemistry China Academy of Engineering Physics Mianyang621900 China Southwest Institute of Applied Magnetism Mianyang621010 China Institute of Fluid Physics China Academy of Engineering Physics Mianyang621900 China Southwest University of Science and Technology China

Ultra-high strength steels achieve exceptional strength and toughness through precipitation strengthening, of which the properties and structure have absorbed lots of attentions, especially the dislocations could significantly impact the mechanical properties and deformation behaviors. However, the rate effect of deformation under pressing were little studied due to extensive dislocations that limits plasticity. Herein, we investigated the strain rate effects of deformation behaviors on Ferrium S53 steel, a severely deformed ultra-high strength alloy with a higher initial dislocation density than aging hardening steels, across a broad range of strain rates (0.1 s-1[[EQUATION]] 104 s-1). The results revealed both the yield strength and yield drop of Ferrium S53 steel increased progressively with higher strain rates at the yield stage. The strain rate sensitivity index was lower than other reported ultra-high strength steels, attributed to its high dislocation density. During the hardening stage, Ferrium S53 steel exhibited a stronger strain rate effect on flow stress than other high-strength steels, as described by the modified Johnson-Cook constitutive model. The behavior is explained by the transitions of dislocations to low-angle grain boundaries and high-angle grain boundaries under varying strain rates. The exploration of the "strain rate-structure-performance" relationship provides valuable data to guide the application and design of materials with high dislocation density structures. © 2024, The Authors. All rights reserved.

关键词： Strain rate

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Modeling and Flux Reconstruction of Unstructured Geometric Reactor

SSRN

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SSRN 2024年

作者： Xiao, Bowen Zheng, Youqi Wei, Linfang Institute of Applied Physics and Computational Mathematics Beijing100094 China School of Nuclear Science and Technology Xi’an Jiaotong University Shaanxi Xi’an710094 China School of Optoelectronic Engineering Xidian University Shaanxi Xi’an710071 China

Innovative reactors are typically designed with complex geometric structures, which put forward higher requirements for deterministic reactor core calculation. In the complex geometric reactor core calculation, the LAVENDER code in the SARAX code system was used, which is based on the three-dimensional neutron transport nodal method. A modeling method based on constructive solid geometry was applied to generate arbitrary triangular-z meshes. To meet the requirements of coupling core physics calculation with thermal and other physics fields, a flux reconstruction method based on the statistics of biharmonic spline interpolation of Green’s function has been proposed, which was used to reconstruct the flux of specified region. Three reactors with different types were calculated to verify the accuracy of the flux reconstruction method. Numerical results show that the fluxes of specified region calculated by the proposed flux reconstruction method in the SARAX code were in good agreement with the direct full-core Monte-Carlo results. © 2024, The Authors. All rights reserved.

关键词： Interpolation

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Projection Self-Optimization for Short-Scan Cone-Beam Reconstruction in Robot CT

e-Journal of Nondestructive Testing

引用

e-Journal of Nondestructive Testing 2025年第2期30卷

作者： Zhou, Xuan Liu, Yuedong Wei, Cunfeng Xu, Qiong Beijing Engineering Research Center of Radiographic Techniques and Equipment Institute of High Energy Physics Chinese Academy of Sciences Beijing100049 China School of Nuclear Science and Technology University of Chinese Academy of Sciences Beijing100049 China Jinan Laboratory of Applied Nuclear Science Jinan251401 China

Cone-beam CT (CBCT) is commonly used in industry due to the advantage of large field of view and high imaging efficiency. Robot CT is a unique CBCT system which consists of two independent manipulators carrying the source and detector. It has the ability to scan in arbitraty trajectory while it is hard to gain full-angle projection data. The Parker weighting is usually ultilized in the reconstruction of short scan data, while short scan reconstruction under CB geometry will introduce novel artifacts. In this study, we first analyze the manifestation of mentioned short scan cone beam artifacts, then we develop a projection completion method based on generation of re-projection images with initial reconstruction. After that, then self-optimization of scanned data is adopted to eliminate the artifacts existed in re-projection data through the employment of a residual U-net architecture. Last, we evaluate the performance of proposed method on both simulation and experiment dataset. The experimental results show that this scheme can improve reconstruction quality by about 9% compared to the short scan reconstruction results. © 2025, null. All rights reserved.

关键词： Manipulators

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Targeted-tuning competitive acidic CO2RR via metalloid antagonism sites

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Materials Today 2025年 83卷 54-63页

作者： Sheng, Beibei Cao, Dengfeng Qi, Zhenghang Shou, Hongwei Xia, Yujian Su, Xiaozhi Chen, Shuangming Wu, Chuanqiang Liu, Hengjie Chimtali, Peter Joseph Chu, Yongheng Liu, Chongjing Wu, Xiaojun Song, Li National Synchrotron Radiation Laboratory CAS Center for Excellence in Nanoscience Key Laboratory of Precision and Intelligent Chemistry School of Nuclear Science and Technology University of Science and Technology of China Hefei230029 China SINOPEC Shanghai Research Institute of Petrochemical Technology Co. Ltd. Shanghai201208 China Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps College of Chemistry and Chemical Engineering Tarim University Alar843300 China School of Chemistry and Materials Science CAS Center for Excellence in Nanoscience and Synergetic Innovation of Quantum Information & Quantum Technology Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei230026 China Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA94720 United States Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai201204 China Information Materials and Intelligent Sensing Laboratory of Anhui Province Institutes of Physical Science and Information Technology Anhui University Hefei230601 China

To mitigate the high separation costs associated with conventional neutral/alkaline electrocatalysis for CO2 reduction reactions (CO2RR), acidic CO2RR offers economic advantages and improved efficiency in CO2 utilization. However, it typically involves the cleavage of M−H bonds at a relatively negative potential, leading to the predominant formation of H2 and poor HCOOH selectivity. Herein, we develop a facile solid-phase thermal diffusion approach to controllably synthesize a novel metalloid-metal single atom alloys (m-SAAs) electrocatalyst Te1Bi with unique metalloid antagonistic sites, thus enabling high-efficient acidic CO2-to-HCOOH conversion. Electrochemical test and operando synchrotron radiation multi-techniques (SRMS) characterization reveal that metalloid Te sites bring steric hindrance effect and blocks *H coupling. Furthermore, it actively adsorbs OH− species as a proton source, allowing for effective separation of protons and electrons in space. Thus, leading to enhanced hydrogenation in acidic CO2RR to produce HCOOH. The flow cell test results demonstrate that the carefully designed Te1Bi catalyst exhibits a milder reaction potential, along with higher HCOOH Faraday efficiency (∼94.5 %) and single-pass carbon efficiency (SPCE, ∼40 %) in acidic media. This work significantly expands the family of SAAs and offers a novel perspective to analyze the regulation of competitive reactions through site-specific modifications for industrial acidic CO2RR. © 2024 Elsevier Ltd

关键词： Synchrotron radiation

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Technology Roadmap for Flexible Sensors

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ACS NANO 2023年第6期17卷 5211-5295页

作者： Luo, Yifei Abidian, Mohammad Reza Ahn, Jong-Hyun Akinwande, Deji Andrews, Anne M. Antonietti, Markus Bao, Zhenan Berggren, Magnus Berkey, Christopher A. Bettinger, Christopher John Chen, Jun Chen, Peng Cheng, Wenlong Cheng, Xu Choi, Seon-Jin Chortos, Alex Dagdeviren, Canan Dauskardt, Reinhold H. Di, Chong-an Dickey, Michael D. Duan, Xiangfeng Facchetti, Antonio Fan, Zhiyong Fang, Yin Feng, Jianyou Feng, Xue Gao, Huajian Gao, Wei Gong, Xiwen Guo, Chuan Fei Guo, Xiaojun Hartel, Martin C. He, Zihan Ho, John S. Hu, Youfan Huang, Qiyao Huang, Yu Huo, Fengwei Hussain, Muhammad M. Javey, Ali Jeong, Unyong Jiang, Chen Jiang, Xingyu Kang, Jiheong Karnaushenko, Daniil Khademhosseini, Ali Kim, Dae-Hyeong Kim, Il-Doo Kireev, Dmitry Kong, Lingxuan Lee, Chengkuo Lee, Nae-Eung Lee, Pooi See Lee, Tae-Woo Li, Fengyu Li, Jinxing Liang, Cuiyuan Lim, Chwee Teck Lin, Yuanjing Lipomi, Darren J. Liu, Jia Liu, Kai Liu, Nan Liu, Ren Liu, Yuxin Liu, Yuxuan Liu, Zhiyuan Liu, Zhuangjian Loh, Xian Jun Lu, Nanshu Lv, Zhisheng Magdassi, Shlomo Malliaras, George G. Matsuhisa, Naoji Nathan, Arokia Niu, Simiao Pan, Jieming Pang, Changhyun Pei, Qibing Peng, Huisheng Qi, Dianpeng Ren, Huaying Rogers, John A. Rowe, Aaron Schmidt, Oliver G. Sekitani, Tsuyoshi Seo, Dae-Gyo Shen, Guozhen Sheng, Xing Shi, Qiongfeng Someya, Takao Song, Yanlin Stavrinidou, Eleni Su, Meng Sun, Xuemei Takei, Kuniharu Tao, Xiao-Ming Tee, Benjamin C. K. Thean, Aaron Voon-Yew Trung, Tran Quang Wan, Changjin Wang, Huiliang Wang, Joseph Wang, Ming Wang, Sihong Wang, Ting Wang, Zhong Lin Weiss, Paul S. Wen, Hanqi Xu, Sheng Xu, Tailin Yan, Hongping Yan, Xuzhou Yang, Hui Yang, Le Yang, Shuaijian Yin, Lan Yu, Cunjiang Yu, Guihua Yu, Jing Yu, Shu-Hong Yu, Xinge Zamburg, Evgeny Zhang, Haixia Zhang, Xiangyu Zhang, Xiaosheng Zhang, Xueji Zhang, Yihui Zhang, Yu Zhao, Siyuan Zhao, Xuanhe Zheng, Yuanjin Zheng, Yu-Qing Zheng, Zijian Zhou, Tao Zhu, Bowen Zhu, Ming Zhu, Rong Zhu, Yangzhi Zhu, Yong Zou, Guijin Chen, Xiaodong 08-03 Innovis Singapore 138634 Republic of Singapore Innovative Centre for Flexible Devices (iFLEX) School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore Department of Biomedical Engineering University of Houston Houston Texas 77024 United States School of Electrical and Electronic Engineering Yonsei University Seoul 03722 Republic of Korea Department of Electrical and Computer Engineering The University of Texas at Austin Austin Texas 78712 United States Microelectronics Research Center The University of Texas at Austin Austin Texas 78758 United States Department of Chemistry and Biochemistry California NanoSystems Institute and Department of Psychiatry and Biobehavioral Sciences Semel Institute for Neuroscience and Human Behavior and Hatos Center for Neuropharmacology University of California Los Angeles Los Angeles California 90095 United States Colloid Chemistry Department Max Planck Institute of Colloids and Interfaces 14476 Potsdam Germany Department of Chemical Engineering Stanford University Stanford California 94305 United States Laboratory of Organic Electronics Department of Science and Technology Campus Norrköping Linköping University 83 Linköping Sweden Wallenberg Initiative Materials Science for Sustainability (WISE) and Wallenberg Wood Science Center (WWSC) SE-100 44 Stockholm Sweden Department of Materials Science and Engineering Stanford University Stanford California 94301 United States Department of Biomedical Engineering and Department of Materials Science and Engineering Carnegie Mellon University Pittsburgh Pennsylvania 15213 United States Department of Bioengineering University of California Los Angeles Los Angeles California 90095 United States School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University Singapore 637457 Singapore Nanobionics Group Department of Chemical and Biological Engineering Monash University Clayton Australia 3800 Monash

Humans rely increasingly on sensors to address grand challenges and to improve quality of life in the era of digitalization and big data. For ubiquitous sensing, flexible sensors are developed to overcome the limitations of conventional rigid counterparts. Despite rapid advancement in bench-side research over the last decade, the market adoption of flexible sensors remains limited. To ease and to expedite their deployment, here, we identify bottlenecks hindering the maturation of flexible sensors and propose promising solutions. We first analyze continued...challenges in achieving satisfactory sensing performance for real-world applications and then summarize issues in compatible sensor-biology interfaces, followed by brief discussions on powering and connecting sensor networks. Issues en route to commercialization and for sustainable growth of the sector are also analyzed, highlighting environmental concerns and emphasizing nontechnical issues such as business, regulatory, and ethical considerations. Additionally, we look at future intelligent flexible sensors. In proposing a comprehensive roadmap, we hope to steer research efforts towards common goals and to guide coordinated development strategies from disparate communities. Through such collaborative

关键词： soft materials mechanics engineering flexible electronics conformable sensors bioelectronics human-machine interfaces body area sensor networks technology translation sustainable electronics

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Compact MPPC-based coded aperture imaging camera for dual-particle detection

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Radiation Detection Technology and Methods 2021年第1期5卷 61-70页

作者： Jing Guo Xiaoyu Pang Jiale Cai Daowu Li Xiaoming Wang Xuanhou Hu Yue Yu Shuangquan Liu Xiuzuo Liang Yiwen Zhang Lei Shuai Long Wei Beijing Engineering Research Center of Radiographic Techniques and Equipment Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Jinan Laboratory of Applied Nuclear Science Jinan 250131China

Purpose Fast neutrons and gamma-ray imaging detection is an effective way to detect and identify radioactive material in the field of nuclear security.A compact coded aperture imaging(CAI)camera was designed to be sensitive to both gamma and neutron radiation based on plastic scintillators and multi-pixel photon counters(MPPC).Methods MPPCs coupling with the 13×13 pixelated plastic scintillators one-to-one were utilized to reduce the scale of the CAI system while maintaining good positional *** symmetric charge division(SCD)circuit was adopted to reduce the 169 signals output from the MPPC array to *** waveform was collected and processed with four Domino Ring Sampler 4(DRS4)chips and two 16-channel analog-to-digital converter(ADC)*** the pulse shapes of fast neutrons would be broadened after elastic scattering multiple times in the scintillators,the Anger-Logic method was applied to eliminate multiple elastic scattering events so that good pulse shape discrimination(PSD)performance can be *** The imaging and detection ability of the camerawas evaluated using the 241Am-Be(5.9×10^(5) n/s)neutron source and 137Cs(370 MBq)*** camera can be used to detect fast neutrons(0.5–10 MeV)and gammarays(0.2–2.5MeV).Furthermore,it can implement efficient neutron/gamma PSD capabilities in the mixed-field *** figure of merit(FOM)of the camera calculated at 400keVee energy cut is *** A compact MPPC-based CAI camera was designed to detect and discriminate fast neutrons and gamma *** good PSD performance was well suited to distinguish fast neutrons from gamma rays in a dual-particle *** portable design makes it promising for complex monitoring scenarios in nuclear security.

关键词： Coded aperture imaging Fast neutron imaging Gamma imaging n-γdiscrimination

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