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6th International Conference on Thermomechanical Processing, TMP 2022

作者： Li, Liejun Huo, Xiangdong Gao, Jixiang Peng, Zhengwu Chen, Songjun School of Mechanical and Automotive Engineering South China University of Technology Guangzhou510641 China School of Material Science and Engineering Jiangsu University Zhenjiang212013 China School of Mechanical Engineering Guangdong Polytechnic Normal University Guangzhou510640 China

ISBN: (纸本)9787502492441

Ti-microalloyed high strength steel is a new type of steel material with low cost and high performance. Since 2004, our research group has dedicated to its physical metallurgy. The progress will be reviewed and introduced here for about eighteen years, such as effect of TMCP schedule on property, microstructure and precipitation of titanium-bearing steel, isothermal precipitation kinetics of titanium carbides, the relationship between isothermal transformation and precipitation or between isothermal precipitation and strain induced precipitation, effect of molybdenum on γ→α transformation and nanometer carbides, and so on. A new method for isothermal precipitation kinetics of carbides was proposed through compressing test on a Gleeble-3800 Thermo-mechanical Simulator. Many experimental methods, such as SEM/TEM/HRTEM/APT, were used to study nanometer carbides in steel. Precipitation change model during isothermal transformation was established. In the future, more works should focus on connecting experimental research in the laboratory and the real production in the field, so research results can be applied to develop new products in different applications and processes. © TMP 2022 - Proceedings. All rights reserved.

关键词： High strength steel

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Single plasmonic exceptional point nanoantenna coupled to a photonic integrated circuit sensor

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Photonics Research 2025年第3期13卷 632-641页

作者： KAMYAR BEHROUZI ZHANNI WU LIWEI LIN BOUBACAR KANTE Department of Mechanical Engineering University of California BerkeleyBerkeleyCalifornia 94720USA Berkeley Sensor and Actuator Center(BSAC) BerkeleyCalifornia 94720USA Department of Electrical Engineering and Computer Science University of California BerkeleyBerkeleyCalifornia 94720USA Material Science Division Lawrence Berkeley National LaboratoryBerkeleyCalifornia 94720USA

Point-of-care sensors are pivotal for early disease diagnosis,significantly advancing global *** plasmons,the collective oscillations of free electrons under electromagnetic excitation,have been widely studied for biosensing due to their electromagnetic field enhancements at sub-wavelength *** introduce a plasmonic biosensor on a compact photonic integrated circuit(PIC)enhanced by exceptional points(EPs).EPs,singularities in non-Hermitian optical systems,provide extreme sensitivity to external *** emerge when two or more complex resonating modes merge into a single degenerate *** demonstrate an EP in a single coupled nanoantenna particle positioned in a uniquely designed silicon nitride slot-waveguide,which we call a *** laterally shifting two optically coupled gold nanobars of different lengths,we achieve a single particle *** junction-waveguide enables efficient coupling of the plasmonic nanoantenna to the waveguide *** system integrates a four-port Mach-Zehnder interferometer(MZI),allowing for simultaneous measurements of the amplitude and phase of EP,facilitating highly accurate real-time eigenvalue *** biosensing,we encapsulated the detection zone with a microchannel,enabling low-volume and simple sample *** single particle integrated EP sensor demonstrates superior sensitivity compared to the corresponding linear diabolic point(DP)system under both local and bulk sensing schemes,even at large *** studies revealed that the integrated EP sensor can detect a single molecule captured by the nanobars with the average size ranging from 10 to 100 *** proposed EP biosensor,with its extreme sensitivity,compact form,and real-time phase sensing capabilities,provides an approach for detecting and quantifying various biomarkers such as proteins and nucleic acids,offering a unique platform for early disease diagnosis.

关键词： electromagnetic field enhancements photonic integrated circuit plasmonic biosensor collective oscillations free electrons biosensor surface plasmons plasmonic exceptional point compact photonic integrated circuit pic enhanced

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Development of ZrO2-TiO2 binary nanocomposites for enhanced energy storage in supercapacitors

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Discover Electrochemistry 2025年第1期2卷 1-14页

作者： Patil, Sridevi Chikkatti, Bipin S. Sajjan, Ashok M. Banapurmath, Nagaraj R. Department of Chemistry KLE Technological University Hubballi India Centre of Excellence in Material Science School of Mechanical Engineering KLE Technological University Hubballi India

This study focuses on the development of ZrO₂–TiO₂ binary nanocomposites for use in supercapacitor applications. The functionality of the nanoparticles is examined through Fourier transform infrared spectroscopy, X-ray diffraction while their surface morphology is analyzed using scanning electron microscopy. Electrochemical performance is evaluated using techniques such as Cyclic Voltammetry, Electrochemical Impedance Spectroscopy, and Galvanostatic Charge–Discharge measurements. The ZrO₂/TiO₂ nanocomposite demonstrates a high specific capacitance of 226.5 F g⁻1 at a current density of 0.75 A g⁻1. It also exhibits impressive stability, retaining 86% of its capacitance and almost 100% coulombic efficiency after 4000 cycles. Moreover, the nanocomposite exhibits an impressive power density of 5000 W kg⁻1, demonstrating its capability for rapid energy delivery, which is a critical requirement for high-power applications. Simultaneously, it achieves a high energy density of 125.8 Wh kg⁻1, signifying its ability to store substantial amounts of energy per unit mass. Given these remarkable attributes, the ZrO₂–TiO₂ nanocomposite emerges as a highly promising material for energy storage applications, offering a compelling alternative to conventional electrode materials and paving the way for the development of more efficient, sustainable, and high-performance electrochemical energy storage systems.

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Mechanistic modeling of cutting forces in milling of unidirectional Glass Fiber Reinforced Polymer (UD-GFRP) 20

Mechanistic modeling of cutting forces in milling of unidire...

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20th CIRP Conference on Modeling of Machining Operations in Mons, CIRP CMMO 2025

作者： Nutte, Matthias Rivière-Lorphèvre, Edouard Dambly, Valentin Arrazola, Pedro-José Lazoglu, Ismail Granjon, Aurélie Ducobu, François Machine Design and Production Engineering Lab Research Institute for Science and Material Engineering UMONS Mons7000 Belgium Mechanical and Manufacturing Department Faculty of Engineering Mondragon Unibertsitatea Loramendi 4 Arrasate-Mondragón20500 Spain Manufacturing and Automation Research Center Koc University Istanbul34450 Turkey Sobelcomp SPRL Rue de l'économie 13 Loncin 4431 Belgium

Mechanistic models, established on experimental data, are recognized for their precision and simplicity in implementation. In this context of milling, the modeling of cutting forces, specifically radial and tangential components, has been extensively explored for unidirectional carbon fiber-reinforced polymer (UD-CFRP) parts. These models account for the anisotropic nature of fiber-reinforced polymers (FRPs), with cutting coefficients that vary based on the instantaneous cutting angle. However, due to the inherent flexibility of these materials, primarily attributed to their low thickness, axial cutting forces must also be incorporated to accurately represent the phenomena occurring during the machining process. This study develops a model for calculating cutting forces in three spatial directions for UD-GFRPs (unidirectional Glass Fiber-reinforced polymers). Building on an existing model from the literature for UD-CFRP, this new version introduces several modifications. First, the model validated for CFRPs must be extended to GFRPs. Secondly, the model must be extended from two dimensions to three dimensions. Finally, to ensure that the model includes only the actual contributions of the trimming operation, machining tests will be performed using only the rolling teeth. The cutting coefficients are modelled as a periodic function with a fundamental period of π. A first-order Fourier series was chosen for this purpose. Fourier series parameters are identified from the milling forces measured during a set of slotting operations at three feed rates and four fiber orientations. While the average levels of cutting forces are accurately modelled for both slotting and shoulder milling (with 50% immersion in up milling), the modeling of force amplitudes still requires improvement. © 2025 The Author(s).

关键词： Slotting

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Design and simulation of a combined flue gas and steam bagasse dryer to increase boiler efficiency of a sugar factory

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materials Today: Proceedings 2023年 90卷 113-122页

作者： Sololo Kebede Nemomsa Naol Dessalegn Dejene Mahesh Gopal Getachew Shunki Tibba Dinkisa Tamiru Negari Department of Mechanical Engineering College of Engineering and Technology Wollega University Post Box. No. 395 Nekemte Ethiopia Department of Mechanical Engineering and Material Science Faculty of Science and Technology University of Stavanger Stavanger Norway College of Electrical and Mechanical Engineering Addis Ababa Science and Technology University Addis Ababa Ethiopia

Bagasse is a sugar industry residue used to generate high-pressure steam that can be utilized to generate electricity. The moisture content of bagasse is a serious issue that lowers boiler efficiency. The study conducted in Arjo Diddesa sugar factory, its moisture level of the bagasse is above 52%, which impacts boiler efficiency. In this plant uses traditional SHRD technique, this uses waste flue gas to decrease moisture content. To reduce heat losses, steam is directed through the inner tube, while bagasse and flue gas are directed through the outer rotating cylinder, leading in interaction between indirect steam and direct flue gas-bagasse. ANSYS software is used for the development of drier and optimization by considering the input parameters for the SHRD are: flue gas mass flow rate, bagasse temperature, flow Pressure of flue gas. The SHRD system is tilted to the horizontal at an angle of 4° and rotates at a speed of 4.6 rpm to aid in transporting wet bagasse. The moisture in the bagasse is dropped from 52 percent to 45 percent, and increase in efficiency of a boiler from 71.5 percent to 74.5 percent theoretically. The initial GCV and NCV with 52% moisture content are 9137.6 kJ/kg and 7129.4 kJ/kg. After drying, the 45% of moisture content, the GCV and NCV of bagasse are 10484.8 kJ/kg and 8549.8 kJ/kg, respectively. The findings of the comparison show that the CV was raised by 1500 kJ/kg.

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A peroxidase-like single-atom Fe-N_(5)active site for effective killing human lung adenocarcinoma cells

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Nano Research 2023年第4期16卷 5216-5225页

作者： Liye Zhu Hong Zhong Dan Du Tao Li Hoai Nguyen Scott PBeckman Wentao Xu Jin-Cheng Li Nan Cheng Yuehe Lin Beijing Laboratory for Food Quality and Safety College of Food Science and Nutritional EngineeringChina Agricultural UniversityBeijing 100083China School of Mechanical and Materials Engineering Washington State UniversityPullmanWA 99164USA Faculty of Chemical Engineering Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus MaterialsKunming University of Science and TechnologyKunming 650500China Department of Chemistry and Biochemistry Northern Illinois University1425 W.Lincoln Hwy.DeKalbIL 60115USA X-ray Science Division Argonne National Laboratory9700 S.Cass AveLemontIL 60439USA Material Science Division Argonne National Laboratory9700 S.Cass AveLemontIL 60439USA

Single-atom catalyst(SAC)is one of the newest catalysts,and attracts people’s wide attention in cancer therapy based on their characteristics of maximum specific catalytic activity and high *** designed and synthesized a Fe-N decorated graphene nanosheet(Fe-N5/GN SAC)with the coordination number of *** enzymology and theoretical calculations,the Fe-N5/GN SAC has outstanding intrinsic peroxidase-like catalytic activity due to single-atom Fe site with five-N-coordination *** explored its potential on lung cancer therapy,and found that it could kill human lung adenocarcinoma cells(A549)by decomposing hydrogen peroxide(H_(2)O_(2))into toxic reactive oxygen species(ROS)under acidic microenvironment in threedimensional(3D)lung cancer cell *** study demonstrates a promising application of SAC with highly efficient single-atom catalytic sites for cancer treatment.

关键词： single-atom catalyst three-dimensional(3D) cancer cell model peroxidase-like catalytic activity cancer therapy

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Substantial thermoelectric enhancement achieved by manipulating the band structure and dislocations in Ag and La co-doped SnTe

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Journal of Advanced Ceramics 2021年第4期10卷 860-870页

作者： Wenjing XU Zhongwei ZHANG Chengyan LIU Jie GAO Zhenyuan YE Chunguang CHEN Ying PENG Xiaobo BAI Lei MIAO Guangxi Key Laboratory of Information Material Guangxi Collaborative Innovation Center of Structure and Property for New Energy and MaterialsSchool of Material Science and EngineeringGuilin University of Electronic TechnologyGuilin 541004China Department of Materials Science and Engineering SIT Research LaboratoriesInnovative Global ProgramFaculty of EngineeringShibaura Institute of TechnologyTokyo 135-8548Japan

Eco-friendly SnTe based thermoelectric materials are intensively studied recently as candidates to replace PbTe;yet the thermoelectric performance of SnTe is suppressed by its intrinsically high carrier concentration and high thermal *** this work,we confirm that the Ag and La co-doping can be applied to simultaneously enhance the power factor and reduce the thermal conductivity,contributing to a final promotion of figure of *** one hand,the carrier concentration and band offset between valence bands are concurrently reduced,promoting the power factor to a highest value of-2436μW·m^(-1)·K^(-2) at 873 *** the other hand,lots of dislocations(~3.16×10^(7)mm^(-2))associated with impurity precipitates are generated,resulting in the decline of thermal conductivity to a minimum value of 1.87 W·m^(-1)·K^(-1) at 873 *** a result,a substantial thermoelectric performance enhancement up to zT≈1.0 at 873 K is obtained for the sample Sn0.94Ag0.09La0.05Te,which is twice that of the pristine SnTe(zT≈0.49 at 873 K).This strategy of synergistic manipulation of electronic band and microstructures via introducing rare earth elements could be applied to other systems to improve thermoelectric performance.

关键词： SnTe band convergence dislocation Ag and La co-doping thermoelectric performance

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Continuous Lithium-Ion Extraction From Seawater and Mine Water With a Fuel Cell System and Ceramic Membranes

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Energy & Environmental materials 2024年第6期 258-265页

作者： Cansu K?k Lei Wang Jean Gustavo A.Ruthes Antje Quade Matthew E.Suss Volker Presser INM-Leibniz Institute for New Materials Department of Materials Science & Engineering Saarland University Leibniz Institute for Plasma Science and Technology Faculty of Mechanical Engineering Technion-Israel Institute of Technology Wolfson Department of Chemical Engineering Technion-Israel Institute of Technology Grand Technion Energy Program Technion-Israel Institute of Technology Saarene-Saarland Center for Energy Materials and Sustainability

The demand for electronic devices that utilize lithium is steadily increasing in this rapidly advancing technological *** high-purity lithium in an environmentally friendly way is challenging by using commercialized ***,we propose the first fuel cell system for continuous lithium-ion extraction using a lithium superionic conductor membrane and advanced *** fuel cell system for extracting lithium-ion has demonstrated a twofold increase in the selectivity of Li+/Na+while producing electricity.

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PnP Operations to Maintain Persistent Feasibility in Linear Constrained Systems

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IFAC-PapersOnLine 2023年第2期56卷 11377-11382页

作者： Richard Arlen Hall Dr. Leila Bridgeman Thomas Lord Dept of Mechanical Engineering & Material Science Duke University Durham NC United States of America

Multi-agent systems often have high dimensional state and input spaces that change rapidly as agents join and leave the system. The plug-and-play (PnP) design paradigm provides a framework to design controllers in this context by shifting most computations for individual agents to design-time. Smaller, numerically tractable PnP algorithms are then used to allow the agents to join and leave the network while maintaining persistent feasibility and stability. In constrained systems, persistent feasibility is assured within feasible control invariant (CI) sets. This work develops a PnP framework to compute these sets for a class of distributed, non-cooperative linear systems. The agents are allowed a preview of the cross-disturbance but no other restrictions are placed on the agents’ controllers. At design-time, undisturbed and maximally disturbed CI sets are found for each agent individually. As the network changes, the agents’ current CI sets are computed using linear combinations of these extreme CI sets. With this, on-line constraint adjustments can be accomplished through distributed optimization problems that scale well for large networks. The overall solution is agnostic to the local controller design and accounts for the local states at the time of the PnP operations.

关键词： Plug-and-play Control of constrained systems Decentralized and distributed control persistent feasibility Linear systems Time-varying systems Disturbance rejection

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Unveiling the effect of molybdenum and titanium co-doping on degradation and electrochemical performance in Ni-rich cathodes

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materials Reports(Energy) 2025年第1期5卷 32-42页

作者： Imesha Rambukwella Konstantin L.Firestein Yanan Xu Ziqi Sun Shanqing Zhang Cheng Yan School of Mechanical Medicaland Process EngineeringQueensland University of TechnologyBrisbaneQLD4000Australia Centre for Material Science Queensland University of TechnologyBrisbaneQLD4000Australia Central Analytical Research Facility Queensland University of TechnologyBrisbaneQLD4000Australia School of Chemistry and Physics Queensland University of TechnologyBrisbaneQLD4000Australia Institute for Sustainable Transformation School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou510006China

In this work,we have applied molybdenum(Mo)and titanium(Ti)co-doping to solve the degradation of Ni-rich *** modified cathode,i.e.,Li(Ni_(0.89)Co_(0.05)Mn_(0.05)Mo_(0.005)Ti_(0.005))O_(2) holds a stable structure with expanded crystal lattice distance which improves Li ion diffusion *** dopants have suppressed the growth of primary particles,formed a coating on the surface,and promoted the elongated ***,the mechanical strength of these particles has increased,as confirmed by the nanoindentation test,which can help suppress particle *** detrimental H2-H3 phase transition has been postponed by 90 mV allowing the cathode to operate at a higher voltage.A better cycling stability over 100 cycles with 69%capacity retention has been *** believe this work points out a way to improve the cycling performance,Coulombic efficiency and capacity retention in Ni-rich cathodes.

关键词： Ni-rich cathode Mo doping Ti doping Degradation Unsymmetrical phase transition mechanical stress Particle cracking

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