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A Soy Protein-Based Composite Film with a Hierarchical Structure Inspired by Nacre

Journal of Renewable materials 2022年第3期10卷 639-652页

作者： Yecheng Xu Chaojie Xu Mingsong Chen Jianzhang Li Ling Zeng Jing Luo Qiang Gao Sheldon Q.Shi Beijing Key Laboratory of Wood Science and Engineering&MOE Key Laboratory of Wooden Material Science and Application Beijing Forestry UniversityBeijing100083China Nanning SCISKY Waterborne Technologies Co. Ltd.Nanning530105China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing210037China College of Engineering Department of Mechanical and Energy EngineeringUniversity of NorthTexasDenton76207-7102USA

Soy protein-based composite film is a potential replacement for petroleum-based film with multipurpose applica-tions and cleaner *** is difficult to improve both the tensile strength and toughness of a protein-based film without sacrificing its *** this study,inspired by the hierarchical structure of nacre,a facile yet delicate strategy was developed to fabricate a novel bio-based film with excellent toughness and high ***(TGA)crosslinked soy protein(SPI)as hard phase and thermoplastic polyurethane elastomer(TPU)as soft phase comprise an alternative lay-up hierarchical *** interface of these two phases is enhanced using triglycidylamine(TGA)surface-modified TPU(MTPU).The tensile strength of SPI/MTPU/TGA films increases by 392%to 7.78 MPa and their toughness increases by 391%to 8.50 MJ/m^(3) compared to soy protein/glycerol *** proposed hierarchical structure can also be extended to other high-performance materials and polymers.

关键词： Soy protein-based composite film hierarchical structure TPU enhancement mechanism

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Excitations in layered materials from a non-empirical Wannier-localized optimally-tuned screened rangeseparated hybrid functional

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npj Computational materials 2024年第1期10卷 132-140页

作者： María Camarasa-Gómez Stephen E.Gant Guy Ohad Jeffrey B.Neaton Ashwin Ramasubramaniam Leeor Kronik Department of Molecular Chemistry and Materials Science Weizmann Institute of ScienceRehovoth7610001Israel Department of Physics University of CaliforniaBerkeleyCA94720USA Materials Sciences Division Lawrence Berkeley National LaboratoryBerkeleyCA94720USA Kavli Energy NanoSciences Institute at Berkeley University of CaliforniaBerkeleyCA94720USA Department of Mechanical and Industrial Engineering University of Massachusetts AmherstAmherstMA01003USA Materials Science and Engineering Graduate Program University of MassachusettsAmherstAmherstMA01003USA

Accurate prediction of electronic and optical excitations in van der Waals(vdW)materials is a long-standing challenge for density functional *** recent Wannier-localized optimally-tuned screened range-separated hybrid(WOT-SRSH)functional has proven successful in non-empirical determination of electronic band gaps and optical absorption spectra for covalent and ionic ***,for vdW materials the tuning of the material-and structure-dependent functional parameters has only been attained ***,we present a non-empirical WOT-SRSH approach applicable to vdW materials,with the optimal functional parameters transferable between monolayer and *** apply this methodology to prototypical vdW materials:black phosphorus,molybdenum disulfide,and hexagonal boron nitride(in the latter case including zero-point renormalization).We show that the WOT-SRSH approach consistently achieves accuracy levels comparable to experiments and many-body perturbation theory(MBPT)calculations for band structures and optical absorption spectra,both on its own and as an optimal starting point for MBPT calculations.

关键词： theory optimal functional

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Effect of Surface Roughness on the Magnetism, Nano-indentation, Surface Energy, and Electrical Properties of Co60Fe20Dy20 Films on Si (100) Substrate

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Journal of Electronic materials 2024年第4期53卷 1752-1762页

作者： Liu, Wen-Jen Chang, Yung-Huang Chiang, Chia-Chin Chen, Yuan-Tsung Lin, Chih-Chien Chen, Pei-Ling Lin, Shih-Hung Department of Materials Science and Engineering I-Shou University Kaohsiung840 Taiwan Bachelor Program in Industrial Technology National Yunlin University of Science and Technology 123 University Road Section 3 Yunlin Douliou64002 Taiwan Department of Mechanical Engineering National Kaohsiung University of Science and Technology Kaohsiung City80778 Taiwan Graduate School of Materials Science National Yunlin University of Science and Technology 123 University Road Section 3 Yunlin Douliou64002 Taiwan Department of Electronic Engineering National Yunlin University of Science and Technology 123 University Road Section 3 Yunlin Douliou64002 Taiwan

In this study, we focused on depositing a target material, cobalt-iron-dysprosium (Co60Fe20Dy20), onto silicon (Si) (100) substrates with thickness varying from 10 nm to 50 nm through a direct-current (DC) magnetron sputtering technique. The subsequent step involved subjecting the samples to an hour-long annealing process in a vacuum annealing furnace at temperatures of 100°C, 200°C, and 300°C. To assess the elemental composition of the CoFeDy films, energy-dispersive X-ray spectroscopy (EDS) was employed. An observed trend indicated an increase in low-frequency alternating-current magnetic susceptibility (χac) with the increasing thickness. Remarkably, the CoFeDy films exhibited their peak χac following annealing at 300°C, with an optimal resonance frequency of 50 Hz. After annealing at 300°C, the CoFeDy film’s surface energy peaked at 50 nm. The magnetic, electrical, and adhesive properties of the CoFeDy films were notably influenced by surface roughness at different annealing temperatures. Atomic force microscopy (AFM) analysis revealed a gradual reduction in film roughness post-annealing, corresponding to smoother surfaces indicative of a weaker domain wall pinning effect, heightened carrier conductivity, and increased liquid spreading. Collectively, these outcomes contributed to diminished χac, reduced electrical resistance, and enhanced adhesion. Graphical Abstract: (Figure presented.) © The Minerals, Metals & materials Society 2024.

关键词： Adhesion

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Functionally graded structure of a nitride-strengthened Mg_(2)Si-based hybrid composite

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Journal of Magnesium and Alloys 2024年第3期12卷 1239-1256页

作者： Jeongho Yang Woongbeom Heogh Hogi Ju Sukhyun Kang Tae-Sik Jang Hyun-Do Jung Mohammad Jahazi Seung Chul Han Seong Je Park Hyoung Seop Kim Susmita Bose Amit Bandyopadhyay Martin Byung-Guk Jun Young Won Kim Dae-kyeom Kim Rigoberto CAdvincula Clodualdo Aranas Jr Sang Hoon Kim School of Mechanical Engineering Pusan National UniversityBusan 46241Republic of Korea Department of Mechanical Design Engineering Hanyang UniversitySeoul 04763Republic of Korea Process Research 3 Team LG Display Co.Ltd.PajuGyeonggi-do 10845Republic of Korea Department of Materials Science and Engineering Chosun UniversityGwangju 61452Republic of Korea Institute of Well-Aging Medicare&Chosun University LAMP Center Chosun UniversityGwangju 61452Republic of Korea Division of Materials Science and Engineering Hanyang UniversitySeoul 04763Republic of Korea Department of Mechanical Engineering École de Technologie SupérieureMontrealQuebec H3C 1K3Canada Material&Component Convergence R&D Center Korea Construction Equipment Technology InstituteGunsanJeollabuk-do 54002Republic of Korea School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingapore 639798Singapore Graduate Institute of Ferrous&Eco Materials Technology Pohang University of Science and TechnologyPohangGyeongsangbuk-do 37673Republic of Korea Advanced Institute for Materials Research Tohoku UniversitySendai 980-8577Japan Institute for Convergence Research and Education in Advanced Technology Yonsei UniversitySeoul 03722Republic of Korea School of Mechanical and Materials Engineering Washington State UniversityPullmanWashington 99164USA School of Mechanical Engineering Purdue UniversityWest LafayetteIndiana 47907USA Research Institute of Advanced Manufacturing Technology Korea Institute of Industrial TechnologyIncheon 21999Republic of Korea Department of Macromolecular Science and Engineering Case Western Reserve UniversityClevelandOhio 44106USA Department of Chemical and Biomolecular Engineering and Joint Institute for Advanced Materials University of TennesseeKnoxvilleTennessee 37996USA Center for Nanophase Materials and Sciences Oak Ridge National LaboratoryOak RidgeTennessee 37830USA Department of Mechanical Engineering University of New BrunswickFrederictonNew Brunswick E3B 5A3Cana

The ex-situ incorporation of the secondary SiC reinforcement,along with the in-situ incorporation of the tertiary and quaternary Mg_(3)N_(2) and Si_(3)N_(4) phases,in the primary matrix of Mg_(2)Si is employed in order to provide ultimate wear resistance based on the laser-irradiation-induced inclusion of N_(2) gas during laser powder bed *** is substantialized based on both the thermal diffusion-and chemical reactionbased metallurgy of the Mg_(2)Si–SiC/nitride hybrid *** study also proposes a functional platform for systematically modulating a functionally graded structure and modeling build-direction-dependent architectonics during additive *** strategy enables the development of a compositional gradient from the center to the edge of each melt pool of the Mg_(2)Si–SiC/nitride hybrid ***,the coefficient of friction of the hybrid composite exhibits a 309.3%decrease to–1.67 compared to–0.54 for the conventional nonreinforced Mg_(2)Si structure,while the tensile strength exhibits a 171.3%increase to 831.5 MPa compared to 485.3 MPa for the conventional *** outstanding mechanical behavior is due to the(1)the complementary and synergistic reinforcement effects of the SiC and nitride compounds,each of which possesses an intrinsically high hardness,and(2)the strong adhesion of these compounds to the Mg_(2)Si matrix despite their small sizes and low concentrations.

关键词： Laser powder bed fusion Mg_(2)Si-SiC/nitride hybrid composite Both the thermal diffusion-and chemical reaction-based metallurgy Functionally graded structure Compositional gradient Wear resistance.

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Is the hardness of material harder than diamond reliable?

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Journal of materials science & Technology 2023年第13期144卷 111-117页

作者： Jin Liu Yongtao Zou Guodong David Zhan Pei Wang Xiaozhi Yan Duanwei He Liping Wang Institute of Atomic and Molecular Physics Sichuan UniversityChengdu 610065China School of Mechanical Engineering Jingchu University of TechnologyJingmen 448000China Academy for Advanced Interdisciplinary Studies and Department of PhysicsSouthern University of Science and TechnologyShenzhen 518055China Shenzhen Key Laboratory of Ultraintense Laser&Advanced Material Technology College of Engineering Physicsand Center for Advanced Material Diagnostic TechnologyShenzhen Technology UniversityShenzhen 518118China Drilling Technology Division Exploration and Petroleum Engineering Center-Advanced Research Center(EXPEC ARC)Saudi AramcoDhahran 31311Saudi Arabia

With the development of new synthesis methods and chemistries,a number of new superhard materials have been reported to be harder than *** such materials are highly desirable due to their wide-ranging applications,there are some inherent uncertainties in the methods utilized to determine and define the hardness of such *** this paper,we employed the standard Vickers diamond indenter and substitute indenters with the same shape to measure the hardness of nine ceramics and superhard materials within well-defined criteria and methodology,for the assessment of consistency in the hardness *** findings and the developed testing method in the current study have broad implications in characterizing new and emerging superhard materials,leading to new discoveries.

关键词： Vickers hardness Superhard materials Emerging materials Applicability

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A hierarchical salt-rejection strategy for sustainable and high-efficiency solar-driven desalination

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Nano materials science 2024年第1期6卷 38-43页

作者： Zhengyi Mao Xuliang Chen Yingxian Chen Junda Shen Jianpan Huang Yuhan Chen Xiaoguang Duan Yicheng Han Kannie Wai Yan Chan Jian LU CityU-Shenzhen Futian Research Institute Shenzhen518045China Department of Mechanical Engineering City University of Hong Kong83 Tat Chee AvenueKowloonHong KongChina Department of Material Science and Engineering City University of Hong Kong83 Tat Chee AvenueKowloonHong KongChina Department of Biomedical Engineering City University of Hong Kong83 Tat Chee AvenueKowloonHong KongChina School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideAustralia Hong Kong Branch of National Precious Metals Material Engineering Research Centre City University of Hong Kong83 Tat Chee AvenueKowloonHong KongChina Centre for Advanced Structural Materials City University of Hong Kong Shenzhen Research InstituteGreater Bay Joint DivisionShenyang National Laboratory for Materials ScienceShenzhen518057China

Solar steam generation(SSG)is widely regarded as one of the most sustainable technologies for seawater ***,salt fouling severely compromises the evaporation performance and lifetime of evaporators,limiting their practical ***,we propose a hierarchical salt-rejection(HSR)strategy to prevent salt precipitation during long-term evaporation while maintaining a rapid evaporation rate,even in high-salinity *** salt diffusion process is segmented into three steps—insulation,branching diffusion,and arterial transport—that significantly enhance the salt-resistance properties of the ***,the HSR strategy overcomes the tradeoff between salt resistance and evaporation ***,a high evaporation rate of 2.84 kg m^(-2) h^(-1),stable evaporation for 7 days cyclic tests in 20 wt%NaCl solution,and continuous operation for 170 h in natural seawater under 1 sun illumination were *** with control evaporators,the HSR evaporator exhibited a>54%enhancement in total water evaporation mass during 24 h continuous evaporation in 20 wt%salt ***,a water collection device equipped with the HSR evaporator realized a high water purification rate(1.1 kg m^(-2) h^(-1)),highlighting its potential for agricultural applications.

关键词： Solar water evaporation 3D printing Salt-rejection Hierarchical structures High efficiency

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Rare earth lanthanum pinning effect for corrosion resistance ultraefficient microwave absorption FeCo@rGO composites

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Journal of materials science & Technology 2024年第10期177卷 181-190页

作者： Junru Yao Jintang Zhou Lu Lu Feng Yang Zhengjun Yao Bo Ouyang Erjun Kan Yuxin Zuo Renchao Che Fan Wu College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 211100China Ministry of Industry and Information Technology Key Laboratory of Material Preparation and Protection for Harsh Environment(Nanjing University of Aeronautics and Astronautics)Nanjing 211100China MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing School of ScienceNanjing University of Science and TechnologyNanjing 210094China School of Chemistry and Chemical Engineering Anhui UniversityHefei 230601China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsDepartment of Materials ScienceFudan UniversityShanghai 200438China School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing 210094China

Magnetic metal absorbers exhibit remarkable microwave absorption ***,their practical application is severely limited due to their susceptibility to corrosion,particularly in marine *** address this challenge,we propose a novel approach involving the modification and control of FeCo/rGO microwave absorbers using rare earth lanthanum(La).This strategy aims to achieve both high-performance microwave absorption and enhanced resistance to marine *** this study,we employ a La_(2)O_(3) modifying control strategy to refine the FeCo magnetic particles and coat them with CoFe_(2)O_(4) on the surface,leveraging the pinning effect of in situ generated La_(2)O_(3) .This process enhances the interface polarization of the absorbers,thereby improving their electromagnetic performance and ma-rine corrosion ***,the La_(2)O_(3) modified FeCo@rGO composites exhibit broadband ab-sorption,covering a wide frequency range of 6.11 GHz at 1.55 ***,the electromagnetic proper-ties of the La_(2)O_(3) modified FeCo@rGO absorbers remain stable even after prolonged exposure to a 3.5 wt% NaCI solution,simulating marine conditions,for at least 15 ***,we perform first-principle calculations on FeCo and FeCo-O to validate the corrosion resistance of the La_(2)O_(3) modified FeCo@rGO composites at the atomic *** comprehensive investigation explores the control of rare earth lan-thanum modification on the size of magnetic metal particles,enabling efficient electromagnetic wave absorption and marine corrosion *** results of this study provide a novel and facile strategy for the control of microwave absorbers,offering promising prospects for future research and development in this field.

关键词： Rare earth lanthanum FeCo@rGO Microwave absorption Marine corrosion resistance

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Herceptin-Positive Breast Cancer Treatment via Immunoliposomes Triggered by High-Frequency Ultrasound and Microbubbles 17

Herceptin-Positive Breast Cancer Treatment via Immunoliposom...

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17th IEEE International Conference on Nano/Molecular Medicine and engineering, NANOMED 2024

作者： Abuwatfa, Waad H. Anjum, Shabana Pitt, William Husseini, Ghaleb A. American University of Sharjah Material Science and Engineering PhD Program College of Arts and Sciences Sharjah United Arab Emirates American University of Sharjah Department of Chemical and Biological Engineering Sharjah United Arab Emirates Brigham Young University Department of Chemical Engineering ProvoUT84604 United States

ISBN: (纸本)9798331516994

Functionalizing chemotherapeutics-loaded liposomes with monoclonal antibodies can enhance their specificity and minimize side effects. Targeting the human epidermal growth factor receptor 2 (HER2), overexpressed in HER2-positive breast cancer, is achievable by coating liposomes with an anti-HER2 monoclonal antibody. This study focused on synthesizing doxorubicin (DOX)-loaded immunoliposomes functionalized with anti-HER2 (HER-lip). The release of the drug from these immunoliposomes was triggered by high-frequency ultrasound (HFUS) and microbubbles, which acted as exogenous cavitation-enhancing agents. The platform was evaluated for size, lipid content, protein concentration, stability, and controlled release profiles. In vitro assessments were also performed, including the MTT assay for cell viability and flow cytometry to evaluate drug uptake. This innovative drug delivery system shows potential for combined therapeutic and diagnostic applications, improving personalized cancer care and treatment. © 2024 IEEE.

关键词： Monoclonal antibodies

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A study of highly activated hydrogen evolution reaction performance in acidic media by 2D heterostructure of N and S doped graphene on MoO_(x)

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Carbon Energy 2023年第11期5卷 68-80页

作者： Kubra Aydin Seongwon Woo Vinit Kaluram Kanade Seulgi Choi Chisung Ahn Byungkwon Lim Taesung Kim SKKU Advanced Institute of Nanotechnology(SAINT) Department of Nano Science and TechnologySungkyunkwan UniversitySuwon‐siGyeonggi‐doRepublic of Korea School of Advanced Material Science and Engineering Department of Nano Science and TechnologySungkyunkwan UniversitySuwonGyeonggi‐doRepublic of Korea School of Mechanical Engineering Sungkyunkwan UniversitySuwon‐siGyeonggi‐doRepublic of Korea Heat&Surface Technology R&D Department Korea Institute of Industrial TechnologySiheung‐siGyeonggi‐doRepublic of Korea

Herein,a layer of molybdenum oxide(MoO_(x)),a transition metal oxide(TMO),which has outstanding catalytic properties in combination with a carbonbased thin film,is modified to improve the hydrogen production performance and protect the MoO_(x)in acidic media.A thin film of graphene is transferred onto the MoO_(x)layer,after which the graphene structure is doped with N and S atoms at room temperature using a plasma doping method to modify the electronic structure and intrinsic properties of the *** oxygen functional groups in graphene increase the interfacial interactions and electrical contacts between graphene and MoO_(x).The appearance of surface defects such as oxygen vacancies can result in vacancies in MoO_(x).This improves the electrical conductivity and electrochemically accessible surface *** the number of defects in graphene by adding dopants can significantly affect the chemical reaction at the interfaces and improve the electrochemical *** defects in graphene play a crucial role in the adsorption of H^(+)ions on the graphene surface and their transport to the MoO_(x)layer *** enables MoO_(x)to participate in the reaction with the doped graphene.N^(‐)and S^(‐)doped graphene(NSGr)on MoO_(x)is active in acidic media and performs well in terms of hydrogen *** initial overpotential value of 359 mV for the current density of−10 mA/cm^(2)is lowered to 228 mV after activation.

关键词： heteroatom‐doped graphene hydrogen evolution reactions metal‐free catalysts transition metal oxides van der Waals(vdWs)heterostructures

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Corrosion behavior of Mg-Zn-Zr-RE alloys under physiological environment-Impact on mechanical integrity and biocompatibility

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Journal of Magnesium and Alloys 2022年第6期10卷 1542-1572页

作者： Marwa AbdelGawad Chaudhry A.Usman Vasanth C.Shunmugasamy Ibrahim Karaman Bilal Mansoor Mechanical Engineering Program Texas A&M University at QatarEducation CityDoh1Qatar Department of Mechanical Engineering Texas A&M University3123 TAMUCollege StationTX 77843United States of America Department of Materials Science and Engineering Texas A&M University3003 TAMUCollege StationTX 77843United States of America

Benefits of RE addition on Mg alloys strength and corrosion resistance are widely reported but their effects on biodegradability and biocompatibility are still of *** paper investigates the effect of RE additions on biodegradability of Mg-Zn alloys under simulated physiological *** this context,two commercial Mg-Zn-Zr-RE alloys,namely ZE41 and EZ33,with same RE addition but different concentrations are studied in Hank’s Balanced Salt Solution(HBSS)at 37℃and with pH of ***-loss,hydrogen evolution,real-time insitu drop test,electrochemical impedance spectroscopy(EIS)and potentiodynamic polarization are deployed to study corrosion *** mechanical integrity of both alloys is assessed by mechanical testing post ***,in vitro biocompatibility is evaluated by indirect cytotoxicity tests using NIH3T3 *** reveal that although both alloys showed similar microstructure,size and distribution of precipitates played a significant role on its corrosion *** and open circuit potential results show stable film formation on EZ33,while ZE41 showed passive layer formation followed by its deterioration,over the analyzed time *** real-time drop test,it was shown in ZE41 alloy that both T-phase and Zr-rich precipitates acted as micro cathodes,resulting in an unstable surface *** EZ33,Zr-rich regions did not influence corrosion response,resulting in better corrosion resistance that was corroborated by post-immersion surface morphology *** higher degradation observed in ZE41 alloy resulted in higher drop in flexural and tensile strength compared to EZ33 *** addition,cytotoxicity tests on NIH3T3 cells revealed that cell viability of EZ33 increased with increasing incubation time,contrary to ZE41,owing to its lower biodegradation behavior and despite higher concentrations of *** results show that an increase in RE concentration in EZ33,relative to ZE41,had a positive effect on

关键词： Magnesium alloy Corrosion EIS mechanical integrity Cytotoxicity

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