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Microstructure and magnetocaloric properties of melt-extracted SmGdDyCoAl high-entropy amorphous microwires

Rare Metals 2024年第3期43卷 1234-1242页

作者： Shi-Jie Wei Hong-Xian Shen Lun-Yong Zhang Lin Luo Xin-Xing Tang Jian-Fei Sun Xiao-Qing Li School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China Applied Materials Physics Department of Materials Science and EngineeringKTH-Royal Institute of Technology10044StockholmSweden

This paper presents a systematic investigation of the microstructure and magnetocaloric properties of melt-extracted Sm_(20)Gd_(20)Dy_(20)Co_(20)Al_(20)high-entropy *** fabricated wires exhibited an amorphous structure,and the temperature interval of the undercooled liquid AT was 45 *** microwires underwent a second-order magnetic transition from a ferromagnetic to a paramagnetic state near the Curie temperature(T_(C)=52 K),The maximum magnetic entropy change(-ΔS_M^(max)),the relative cooling power and the refrigeration capacity reached 6.34 J·kg^(-1)·K^(-1).422.09 J·kg^(-1)and 332.94 J·kg^(-1),respectively,under a magnetic field change of 5 *** addition,the temperature-averaged entropy changes with two temperature lifts(3 and 10 K)were 6.32 and 6.27 J·kg^(-1)·K^(-1),*** good magnetocalorie performance highlights the significant potential for the Sm_(20)Gd_(20)Dy_(20)Co_(20)Al_(20)microwires to be used as magnetic refrigerant materials in low-temperature region *** work will serve as a valuable reference for future investigations on low-temperature high-entropy magnetocaloric materials.

关键词： Melt-extraction High-entropy amorphous microwires Magnetocaloric effect Magnetic refrigeration

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Scale-CoT: Integrating LLM with Psychiatric Scales for Analyzing Mental Health Issues on Social Media

Scale-CoT: Integrating LLM with Psychiatric Scales for Analy...

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2024 IEEE International Conference on Bioinformatics and Biomedicine, BIBM 2024

作者： Wang, Bichen Sun, Yixin Zi, Yuzhe Zhao, Yanyan Qin, Bing Harbin Institute of Technology School of Computer Science and Technology Harbin China

ISBN: (纸本)9798350386226

Mental health issues pose significant challenges worldwide, leading researchers to utilize computing techniques to analyze social media posts for early detection. Currently, Large Language Models (LLMs) represent advanced AI systems with exceptional language processing capabilities. However, their effectiveness depends on the use of appropriate prompts. The design of suitable prompts specifically for analyzing mental health issues remains underexplored. Drawing inspiration from psychiatrists who use psychiatric scales to assess mental health, we have developed scale-based chains of thought (Scale-CoT) prompts. These not only enhance the LLMs' ability to detect mental health issues but also increase clarity and explainability by integrating professional scales. Furthermore, we demonstrate that the knowledge generated by LLMs can be effectively transferred to smaller models, resulting in a better-performing and more lightweight system. Our approach, which leverages psychiatric scales, outperforms existing methods. Our experiments indicate that combining traditional psychiatry with computational techniques is worthwhile and deserving of further research and exploration. © 2024 IEEE.

关键词： Electronic health record

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MFTEP: A Multimodal Fusion Deep Learning Framework for T Cell Receptor-epitope Interaction Prediction

MFTEP: A Multimodal Fusion Deep Learning Framework for T Cel...

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2024 IEEE International Conference on Bioinformatics and Biomedicine, BIBM 2024

作者： Wang, Haoyan Huang, Yifei Zang, Tianyi Harbin Institute of Technology School of Computer Science and Technology Harbin China

ISBN: (纸本)9798350386226

Accurately predicting immunogenic peptides recognized by T cell receptors (TCR) is a crucial step toward personalized immunotherapy. However, prediction of TCR-epitope interactions is still a challenging task. Early works, like molecular dynamics simulation-based methods, suffer from slow speed and poor generalization capabilities. It is necessary to develop novel computational methods to predict TCR-epitope interactions precisely. With the development of high-throughput sequencing technologies, more and more TCR-epitope interaction data have been recorded in public databases. With the help of these databases, many in silico predictive methods have shown promising performance. However, current methods still perform poorly on unseen TCRs and epitopes. Moreover, most current models still accept single-modal information about TCRs and epitopes, such as sequences or physicochemical information. Effectively utilizing the multimodal information of TCRs and epitopes, such as molecular graphs and 3D structure, may enhance the model's prediction performance. To address the above issues, we presented MFTEP, a multimodal fusion method to predict TCR-epitope interactions by fusing the sequence features, molecular graph features, and 3D structure features of TCRs and epitopes. The ablation study highlights the importance of the multi-modal fusion module in enhancing the model's performance. Several datasets were collected and utilized to evaluate the generality and robustness of the proposed model. According to the experimental results, MFTEP performs better than other state-of-the-art methods, indicating its high predictive power. Overall, the results demonstrate that MFTEP can learn general TCR-epitope interaction patterns and is a powerful prediction tool to apply to real-world scenarios. All the data and code are available at: https://***/skybluewhy/MFTEP © 2024 IEEE.

关键词： T-cells

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Tunable VO_(2) cavity enables multispectral manipulation from visible to microwave frequencies

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Light(science & Applications) 2024年第3期13卷 510-518页

作者： Hang Wei Jinxin Gu Tao Zhao Zhiyuan Yan He-Xiu Xu Shuliang Dou Cheng-Wei Qiu Yao Li Center for Composite Materials and Structure Harbin Institute of TechnologyHarbin 150001China National University of Singapore Department of Electrical&Computer EngineeringSingapore 117583Singapore School of Chemical Engineering and Technology Harbin Institute of TechnologyHarbin 150001China Suzhou Laboratory Suzhou 215123China

Optical materials capable of dynamically manipulating electromagnetic waves are an emerging field in memories,optical modulators,and thermal ***,their multispectral design preliminarily attracts much attention,aiming to enhance their efficiency and integration of ***,the multispectral manipulation based on these materials is challenging due to their ubiquitous wavelength dependence restricting their capacity to narrow *** this article,we cascade multiple tunable optical cavities with selective-transparent layers,enabling a universal approach to overcoming wavelength dependence and establishing a multispectral platform with highly integrated *** on it,we demonstrate the multispectral(ranging from 400 nm to 3 cm),fast response speed(0.9 s),and reversible manipulation based on a typical phase change material,vanadium *** platform involves tandem VO_(2)-based Fabry–Pérot(F-P)cavities enabling the customization of optical responses at target bands *** can achieve broadband color-changing capacity in the visible region(a shift of~60 nm in resonant wavelength)and is capable of freely switching between three typical optical models(transmittance,reflectance,and absorptance)in the infrared to microwave regions with drastic amplitude tunability exceeding *** work represents a state-of-art advance in multispectral optics and material science,providing a critical approach for expanding the multispectral manipulation ability of optical systems.

关键词： spectral microwave visible

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Unwinding-Free Attitude Control Based on Fully Actuated Systems: Transformation, Design, and Analysis

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IEEE Transactions on Aerospace and Electronic Systems 2025年第3期61卷 7841-7851页

作者： Xiao, Fu-Zheng Chen, Li-Qun Harbin Institute of Technology School of Science Shenzhen518055 China

The unit quaternion is one of the most commonly utilized attitude representations because of its global representation and singularity-free properties. Nevertheless, the double cover property caused by the quaternion representation, which provides two sets of quaternions to describe an orientation, may lead to the occurrence of the unwinding phenomenon. This phenomenon implies that the rotation angles exceed 180 degrees. In the past several decades, numerous methods have been proposed to address the unwinding phenomenon. For instance, introducing switching logic variables with hysteresis, combining sliding mode control technologies with switching functions, constructing different attitude error functions, designing anti-unwinding potential functions, etc. Most reported unwinding-free controllers are designed based on the state-space framework;therefore, introducing additional operations is generally inevitable. Contrary to this, the present work is based on a fully actuated system framework. Since the special structure of the fully actuated system controllers, they are immune to the effects of the double cover property of the quaternion representation. This implies that the proposed attitude controllers can be unwinding-free, and no additional operations need to be introduced to prevent the occurrence of the unwinding phenomenon. Theoretical analyses and numerical simulations verify both the stability of the controlled system and the unwinding-free property of the proposed controllers. © 1965-2011 IEEE.

关键词： Sliding mode control

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Advancing antibiotic detection and degradation:recent innovations in graphitic carbon nitride(g-C_(3)N_(4))applications

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Journal of Environmental sciences 2025年第4期150卷 657-675页

作者： Rui Liu Chaojun Zhang Rijia Liu Yuan Sun Binqiao Ren Yuhang Tong Yu Tao Center of Pharmaceutical Engineering and Technology Harbin University of CommerceHarbin 150076China Institute of Advanced Technology Heilongjiang Academy of SciencesHarbin 150080China School of Environment Harbin Institute of TechnologyHarbin 150090China Materials Science and Physical Chemistry Department University of BarcelonaBarcelona 08028Spain State Key Laboratory of Urban Water Resource and Environment School of Civil&Environmental EngineeringHarbin Institute of Technology ShenzhenShenzhen 518055China

The uncontrolled release of antibiotics into the environment would be extremely harmful to human health and ***,it is in urgent need to monitor the environment and promote the detection and degradation of antibiotics to the relatively harmless by-products to a feasible *** carbon nitride(g-C_(3)N_(4))is a non-metallic n-type semiconductor that can be used for the antibiotic detection and degradation due to its easy synthesis process,excellent chemical stability and unique optical ***,the utilization of visible light,electron-hole recombination and electron conductivity have hindered its potential applications in the fields of photocatalytic degradation and electrochemical *** previous publications have highlighted the diverse modification methods for the g-C_(3)N_(4)-based materials,the underlying structure-performance relationships of g-C_(3)N_(4),especially for the detection and degradation of antibiotics,remains to be further *** view of this,the current review centered on the recent progress in the modification techniques of g-C_(3)N_(4),the detection and degradation of antibiotics using the g-C_(3)N_(4)-based materials,as well as the potential antibiotic degradation mechanisms of the g-C_(3)N_(4)-based ***,the underlying applications of the g-C_(3)N_(4)-based materials for antibiotic detection and degradation were also *** review would provide a valuable research foundation and the up-to-date information for the g-C_(3)N_(4)-based materials to combat antibiotic pollution in the environment.

关键词： g-C_(3)N_(4) Antibiotics Modification techniques Photocatalytic degradation Electrochemical detection

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Ultrahigh temperature ablation resistant HfB2-SiC composites:From liquid SiHfCB precursor synthesis to light weight bulk preparation and characterization

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材料科学技术（英文版） 2025年第9期212卷 1-16页

作者： Yang Lyu Jianchao Hao Yuan Cheng Wuju Wang Zhihong Han Guangdong Zhao Ruichen Ni Pu Liu Hangyu Li Guiqing Chen Xinghong Zhang Wenbo Han National Key Laboratory of Science and Technology on Advanced Composites in Special Environments and Center for Composites Materials and StructuresHarbin Institute of TechnologyHarbin 150080China Suzhou Laboratory Suzhou 215123China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments and Center for Composites Materials and StructuresHarbin Institute of TechnologyHarbin 150080China School of Chemistry and Materials Science Heilongjiang UniversityHarbin 150080China

The current generation of ultrahigh temperature ceramic precursors typically encounters obstacles in achieving high ceramic yields(＜40 wt.％)due to the challenges in integrating significant amounts of boron,which hampers their conversion into boride-based ultrahigh temperature *** tackle these challenges,a serious of pioneering liquid multi-component hafnium-containing ceramic SiHfCB precursors(with different Hf/Si ratios)have been *** novel precursors are featured with stable molec-ular structure and high ceramic yield which were successfully created through a novel one-pot polymer-ization *** present in liquid form and their structure is characterized by C-C bonds forming its main chain with branched chains of O-Si-O,Si-O-Hf,Si-O-B,and B-O-Hf which have untapped advantages including uniform component dispersion,and excellent *** ceramic yield of SiHfCB precursor with Hf/Si of 0.2 is remarkably up to 68.6 wt.％at 1500 ℃,and their Hf content exceeded 50 wt.％.Of particular interest,the pyrolyzed product HfB2-SiC nanopowders derived from the SiHfCB precursor with Hf/Si of 0.2,consist of nanopowders in the 40-60 nm range with a density of 5.23 g ***,this material demonstrates exceptional performance in ultrahigh temperature oxygen-containing environ-ments at 2500 ℃,showing near-zero ablation with a linear ablation rate of just 2.5 × 10-4 mm ***-ablation analysis of the microstructure reveals that the formation of a lava-like HfO2 and HfO2-SiO2 oxide layer effectively blocks oxygen penetration and provides excellent oxidation *** inno-vative SiHfCB hafnium-containing ceramic precursor offers a groundbreaking solution for the preparation of lightweight ultrahigh-temperature *** development is poised to provide robust technical support for the use of ultrahigh temperature ceramics in non-ablative thermal protective systems,partic-ularly in the construction of hypersonic vehicles,where ultrahigh temp

关键词： Polymer-derived ceramics Ultrahigh temperature ceramics precursor Ablation resistance Ablation mechanism

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Multiphysics numerical investigation of photothermal self-driving characteristics of SiO_(2)@Au Janus microparticles for drug delivery

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Particuology 2023年第5期76卷 165-175页

作者： Ying Liu Xinzhi Wang Yurong He School of Energy Science and Engineering Harbin Institute of TechnologyHarbin150001China Heilongjiang Key Laboratory of New Energy Storage Materials and Processes School of Energy Science and EngineeringHarbin Institute of TechnologyHarbin50001China

The photothermal self-driving process of Janus microparticles has wide application prospects in the fields of *** silica and gold have good biocompatibility and high photothermal conversion efficiency,the SiO_(2)@Au Janus microparticles are widely used as drug *** on the multiphysics coupling method,the photothermal self-driving process of SiO_(2)@Au Janus microparticles was investi-gated,wherein the substrate was SiO_(2)particles and one side of the particles was coated with gold *** a continuous wave laser with irradiation of 20 W/cm^(2),the distance covered by the Janus particles was increased by increasing the thickness of the gold film and reducing the size of the SiO_(2)particles;the self-driving characteristics of the Janus particles were controlled substantially by increasing the intensity of the incident *** on the simulation results,the thermophoretic motion and Brownian motion of particles can be measured by comparing the absolute values of the thermophoretic force impulse,Brownian force impulse,and drag force *** Brownian force acting on Janus microparticles under low laser power cannot be ***,the minimum laser power required for Janus particles to overcome Brownian motion was *** results can effectively guide the design of Janus particles in biomedicine and systematically analyze the mechanism of particle thermophoretic motion during drug delivery.

关键词： Janus microparticles Photothermal self-driving Multiphysics coupling method Brownian

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A novel linear regression density peak clustering-based transmission line protection for line-commuted converter-voltage source converter hybrid high voltage direct current system

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High Voltage 2024年第5期9卷 1159-1170页

作者： Shunguang Lei Hongchun Shu Zhimin Li Yinan Hu Xincui Tian Taiwen Liu School of Electric Engineering and Automation Harbin Institute of TechnologyHarbinHeilongjiangChina Department of Electric Engineering Kunming University of Science and TechnologyKunmingYunnanChina

Line-commuted converter(LCC)-voltage source converter(VSC)hybrid high voltage direct current(HVDC)transmission system is an innovative technology,the existing LCC and VSC protection require setting,and it is difficult to be directly applied in the LCC-VSC hybrid HVDC,which is a serious problem in practical engineering.A novel linear regression density peak clustering(LRDPC)approach is introduced for transmission line *** employs Least Squares linear regression to compute the fault current slope,followed by density peak clustering for fault type *** proposed protection structure is straightforward and setting-less,eliminating the need for fault pole selection elements and classification *** on the Kun-Liu-Long LCC-VSC HVDC RTDS system demonstrates the method's effectiveness in identifying diverse faults under varying conditions,including fault types,locations,resistances,and signal-to-noise ***,it remains robust against fault impedance(600Ω)and noise interference(20 dB).

关键词： fault converter system

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Nano-lamellar Ti3Al/TiAl alloy prepared via dual-wire-fed electron beam-directed energy deposition:microstructure evolution and nanohardness enhancement

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稀有金属（英文版） 2025年第2期44卷 1312-1331页

作者： Qi Lv Liang Wang Chen Liu Ying-Mei Tan Bao-Xian Su Bin-Bin Wang Long-Hui Yao Hong-Ze Fang Liang-Shun Luo Rui-Run Chen Fei Yang Yan-Qing Su National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China Zhengzhou Research Institute Harbin Institute of TechnologyZhengzhou 450000China Waikato Centre for Advanced Materials and Manufacturing School of EngineeringUniversity of WaikatoHamilton 3240New Zealand

Nano-lamellar Ti3Al/TiAl(α2/γ)alloy with significantly improved nanohardness was prepared using dual-wire-fed electron beam-directed energy deposition(EB-DED)in this *** investigation focused on the evolution of the colony shape and lamellar thickness of the Ti-43Al lamellar alloy at different ***-tion tests were employed to evaluate deformation resis-tance,and numerical simulations provided deeper insights into the deposition *** results indicate that the colonies are mostly columnar,except for a few equiaxed colonies at the *** cooling significantly refines theα2 lamellae,resulting in an average spacing of 218 nm and thickness of 41 ***,substantial microstrain and a nonequilibrium Al distribution lead to a significant generation of y variants,refining the y lamellae to 57 *** γ/γ'and α2/γ interfaces,along with fine α2 phases,contribute to improved deformation ***,the nano-lamellar TiAl alloy exhibited a notable 32％increase in nanohardness(8.3 GPa)while maintaining a similar modulus(197 GPa)to conventionally prepared *** holds significant promise for advancing high-performance TiAl alloys through the dual-wire-fed EB-DED process.

关键词： TiAl alloy Electron beam-directed energy deposition Microstructure Nanohardness

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