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2023 Sharjah International Conference on Physics of Advanced materials, SICPAM 2023

作者： Ayoub, Mohamad Alashkar, Adnan Mdallal, Ayman Ibrahim, Taleb Khamis, Mustafa Alami, Abdul Hai Sustainable and Renewable Energy Engineering Department University of Sharjah Sharjah27272 United Arab Emirates PhD Program in Materials Science and Engineering American University of Sharjah Sharjah26666 United Arab Emirates Department of Chemical Engineering American University of Sharjah Sharjah26666 United Arab Emirates Department of Biology Chemistry and Environmental Sciences College of Arts and Sciences American University of Sharjah Sharjah26666 United Arab Emirates Center for Advanced Materials Research Research Institute of Science and Engineering University of Sharjah Sharjah27272 United Arab Emirates

The development of third-generation photovoltaic (TGPV) technologies promises to address some of the limitations of conventional silicon-based solar cells. However, the scalability of these technologies is a critical factor in their practical application. TGPV include Perovskite Solar Cells (PSC), Organic Solar Cells (OSC), and Dye-Sensitized Solar Cell (DSSC). This paper reviews and summarizes the recent trends and research on the deposition techniques and modularity of TGPV. Various deposition techniques such as slot-die coating, thermal evaporation, and spray pyrolysis are discussed, along with their advantages and limitations. Modularity, which allows for the integration of TGPV cells into different structures, is also examined as a critical factor in scalability. The paper concludes that the scalability of TGPV technologies depends on the development of efficient and cost-effective deposition techniques and modularity, which will facilitate the integration of the TGPV cells into various structures and enable the widespread use of these promising technologies. © Published under licence by IOP Publishing Ltd.

关键词： Perovskite solar cells

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巨噬细胞负载Fe_(3)O_(4)@PLGA纳米颗粒触发智能催化功能杀死多重耐药大肠杆菌

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engineering 2024年第3期34卷 174-186页

作者： Jieni Fu Xiangmei Liu Zhaoyang Li Yufeng Zheng Yu Zhang Hui Jiang Yanqin Liang Shengli Zhu Zhenduo Cui Shuilin Wu Key Laboratory of Advanced Ceramics and Machining Technology of the Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjin 300401China School of Materials Science and Engineering Peking UniversityBeijing 100871China School of Health Sciences and Biomedical Engineering Hebei University of TechnologyTianjin 300401China Department of Orthopedics Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510080China

Infections with multidrug-resistant(MDR)Gram-negative bacteria,such as MDR Escherichia coli(***),remain a challenge due to the lack of safe antibiotics and high fatality rates under anti-infection *** work presents a form of biomimetic intelligent catalysis inspired by the selective biocatalytic property of macrophages(MΦs),consisting of an intelligent controlling center(a living MΦ)and a Fenton reaction catalyst(Fe_(3)O_(4)@poly(lactic-co-glycolic acid)(PLGA)nanoparticles)for killing MDR *** without harming normal *** MΦ-Fe_(3)O_(4)@PLGA particles(i.e.,the intelligent catalysis particles)exhibit selective biocatalysis activity toward MDR *** by producing H_(2)O_(2) and lipid droplets(LDs).This process activates the lipid metabolism and glycan biosynthesis and metabolism pathways based on the result of RNA sequencing data *** H_(2)O_(2) further reacts with Fe_(3)O_(4)@PLGA to form highly toxic hydroxyl radicals(·OH),while the LDs contain antimicrobial peptides and can target MDR *** highly toxicOH and antimicrobial peptides are shown to combat with MDR ***,such that the antibacterial efficiency of the MΦ-Fe_(3)O_(4)@PLGA particles against MDR *** is 99.29%±0.31%in *** importantly,after several passages,the intelligent catalysis function of the MΦ-Fe_(3)O_(4)@PLGA particles is well ***,the concept of biomimetic intelligent catalysts displays potential for treating diseases other than infections.

关键词： Multidrug-resistant Escherichia coli Macrophage-Fe_(3)O_(4)@PLGA particles Biomimetic intelligent catalysis

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Photothermal scaffolds/surfaces for regulation of cell behaviors

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Bioactive materials 2022年第2期7卷 449-477页

作者： Yangcui Qu Kunyan Lu Yanjun Zheng Chaobo Huang Guannan Wang Yanxia Zhang Qian Yu College of Biomedical Engineering&the Key Laboratory for Medical Functional Nanomaterials Jining Medical UniversityJining272067PR China Joint Laboratory of Advanced Biomedical Materials(NFU-UGent) College of Chemical EngineeringNanjing Forestry UniversityNanjing210037PR China Department of Cardiovascular Surgery of the First Affiliated Hospital&Institute for Cardiovascular Science Soochow UniversitySuzhou215006PR China State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou215123PR China

Regulation of cell behaviors and even cell fates is of great significance in diverse biomedical applications such as cancer treatment,cell-based therapy,and tissue *** the past decades,diverse methods have been developed to regulate cell behaviors such as applying external stimuli,delivering exogenous molecules into cell interior and changing the physicochemical properties of the substrates where cells *** scaffolds/surfaces refer to a kind of materials embedded or coated with photothermal agents that can absorb light with proper wavelength(usually in near infrared region)and convert light energy to heat;the generated heat shows great potential for regulation of cell behaviors in different *** the current review,we summarize the recent research progress,especially over the past decade,of using photothermal scaffolds/surfaces to regulate cell behaviors,which could be further categorized into three types:(i)killing the tumor cells via hyperthermia or thermal ablation,(ii)engineering cells by intracellular delivery of exogenous molecules via photothermal poration of cell membranes,and(iii)releasing a single cell or an intact cell sheet via modulation of surface physicochemical properties in response to *** the end,challenges and perspectives in these areas are commented.

关键词： Photothermal scaffolds Photothermal surfaces Tumor ablation Intracellular delivery Cell detachment

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Data-driven structural descriptor for predicting platinum-based alloys as oxygen reduction electrocatalysts

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InfoMat 2023年第6期5卷 102-113页

作者： Xue Zhang Zhuo Wang Adam Mukhtar Lawan Jiahong Wang Chang-Yu Hsieh Chenru Duan Cheng Heng Pang Paul.K.Chu Xue-Feng Yu Haitao Zhao Shenzhen Engineering Center for the Fabrication of Two-Dimensional Atomic Crystals Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenthe People's Republic of China Department of Chemical and Environmental Engineering The University of Nottingham Ningbo ChinaNingbothe People's Republic of China Hubei Three Gorges Laboratory YichangHubeithe People's Republic of China Innovation Institute for Artificial Intelligence in Medicine College of Pharmaceutical SciencesZhejiang UniversityHangzhouthe People's RepublicofChina Department of Chemical Engineering Massachusetts Institute of TechnologyCambridgeMassachusettsUSA Department of Physics Department of Materials Science and Engineeringand Department of Biomedical EngineeringCity University of Hong KongKowloonHong Kongthe People's Republic of China

Owing to increasing global demand for carbon neutral and fossil-free energy systems,extensive research is being conducted on efficient and inexpensive electrocatalysts for catalyzing the kinetically sluggish oxygen reduction reaction(ORR)at the cathode of fuel ***(Pt)-based alloys are considered promising candidates for replacing expensive Pt ***,the current screening process of Pt-based alloys is time-consuming and labor-intensive,and the descriptor for predicting the activity of Pt-based catalysts is generally *** study proposed a strategy by combining high-throughput first-principles calculations and machine learning to explore the descriptor used for screening Pt-based alloy catalysts with high Pt utilization and low Pt *** the 77 prescreened candidates,we identified 5 potential candidates for catalyzing ORR with low ***,during the second and third rounds of active learning,more Pt-based alloys ORR candidates are identi-fied based on the relationship between structural features of Pt-based alloys and their *** addition,we highlighted the role of structural features in Pt-based alloys and found that the difference between the electronegativity of Pt and heteroatom,the valence electrons number of the heteroatom,and the ratio of heteroatoms around Pt are the main factors that affect the activity of *** importantly,the combination of those structural features can be used as structural descriptor for predicting the activity of Pt-based *** believe the findings of this study will provide new insight for predicting ORR activ-ity and contribute to exploring Pt-based electrocatalysts with high Pt utiliza-tion and low Pt consumption experimentally.

关键词： high-throughput DFT calculation machine learning oxygen reduction electrocatalysts platinum-based alloys structural descriptor

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Fabrication of magnesium-doped porous polylactic acid microsphere for bone regeneration

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Biomaterials Translational 2023年第4期4卷 280-290页

作者： Ziwei Tao Ziyang Yuan Dong Zhou Lang Qin Lan Xiao Shihao Zhang Changsheng Liu Jinzhong Zhao Yulin Li Engineering Research Centre for Biomedical Materials of Ministry of Education Key Laboratory for Ultrafine Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghaiChina Department of Sports Medicine Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina School of Chemistry and Chemical Engineering Nanchang UniversityNanchangJiangxi ProvinceChina School of Mechanical Medical and Process EngineeringCenter of Biomedical TechnologyQueensland University of TechnologyBrisbaneAustralia Wenzhou Institute of Shanghai University WenzhouZhejiang ProvinceChina

Biodegradable polymer microspheres that can be used as drug carriers are of great importance in biomedical applications,however,there are still challenges in controllable preparation of microsphere surface morphology and improvement of *** this paper,firstly,poly(L-lactic acid)(PLLA)was synthesised by ring-opening polymerisation under anhydrous anaerobic conditions and further combined with the emulsion method,biodegradable PLLA microspheres(PM)with sizes ranging from 60-100μm and with good sphericity were *** addition,to further improve the surface morphology of PLLA microspheres and enhance their bioactivity,functionalised porous PLLA microspheres loaded with magnesium oxide(MgO)/magnesium carbonate(MgCO_(3))(PMg)were also prepared by the emulsion *** results showed that the loading of MgO/MgCO_(3)resulted in the formation of a porous structure on the surface of the microspheres(PMg)and the dissolved Mg^(2+)could be released slowly during the degradation of *** vitro cellular experiments demonstrated the good biocompatibility of PM and PMg,while the released Mg^(2+)further enhanced the anti-inflammatory effect and osteogenic activity of *** PMg not only show promise for controlled preparation of drug carriers,but also have translational potential for bone regeneration.

关键词： magnesium ion osteogenesis polylactic acid porous microspheres

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An expandable chamber for safe brain retraction: new technologies in the field of transcranial endoscopic surgery

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Journal of Zhejiang University-science B(Biomedicine & Biotechnology) 2023年第4期24卷 326-335页

作者： Elena ROCA Anna GOBETTI Giovanna CORNACCHIA Oscar VIVALDI Barbara BUFFOLI Giorgio RAMORINO Head and Neck Department NeurosurgeryIstituto Ospedaliero Fondazione Poliambulanza25124 BresciaItaly Technology for Health PhD Program University of Brescia25124 BresciaItaly Materials Science and Technology at Department of Mechanical and Industrial Engineering University of Brescia25123 BresciaItaly Metallurgy at Department of Mechanical and Industrial Engineering University of Brescia25123 BresciaItaly Anatomy and Physiopathology Division Department of Clinical and Experimental SciencesUniversity of Brescia25123 BresciaItaly

Neurosurgery is a highly specialized field:it often involves surgical manipulation of noble structures and cerebral retraction is frequently necessary to reach deep-seated brain *** are still no reliable methods preventing possible retraction *** objective of this study was to design work chambers well suited for transcranial endoscopic surgery while providing safe retraction of the surrounding brain *** chamber is designed to be inserted close to the intracranial point of interest;once it is best placed it can be *** should guarantee an appreciable workspace similar to that of current neurosurgical *** experimental aspect of this study involved the use of a force sensor to evaluate the pressures exerted on the brain tissue during the retraction *** pterional craniotomy,pressure measurements were made during retraction with the use of a conventional metal spatula with different *** that,although the force values necessary for retraction and exerted on the spatula by the neurosurgeon are the same,the local pressure exerted on the parenchyma at the edge of the spatula at different inclinations varied greatly.A new method of cerebral retraction using a chamber retractor(CR)has been designed to avoid any type of complication due to spatula edge overpressures and to maintain acceptable pressure values exerted on the parenchyma.

关键词： Brain retraction Spatula Brain retractor design Brain retraction injury Retraction complication Transcranial endoscopic surgery

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A high strength, wear and corrosion-resistant, antibacterial and biocompatible Nb-5 at.% Ag alloy for dental and orthopedic implants

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Journal of materials science & Technology 2021年第21期80卷 266-278页

作者： Tian Wan Kangjie Chu Ju Fang Chuanxin Zhong Yiwen Zhang Xiang Ge Yonghui Ding Fuzeng Ren Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhenChina Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education School of Mechanical EngineeringTianjin UniversityTianjin300354China Center for Advanced Regenerative Engineering Department of Biomedical EngineeringNorthwestern UniversityEvanstonIL60208USA

Refractory metal niobium(Nb) incorporated with a small amount of silver(Ag),the resulting Nb-Ag twophase alloys,were fabricated by mechanical alloying and spark plasma *** microstructure,mechanical properties,wear resistance,corrosion behavior,in vitro and in vivo antibacterial properties and biocompatibility of the Nb-Ag alloys were systematically *** results show that the mechanical properties,wear resistance,corrosion resistance and antibacterial ability were significantly enhanced after addition of 5 at.% *** fabricated Nb-5 at.% Ag alloy demonstrates high yield strength of up to ~1486 MPa and fracture strain of ~35 %.The precipitated Ag particles could reduce friction and *** enhanced corrosion resistance was attributed to the higher relative density of the sintered alloys and the formation of a stable and dense passive film of niobium and silver *** vitro and in vivo evaluations show that the Nb-5 at.% Ag alloy also has strong antibacterial activity and good biocompatibility and osteointegration *** results demonstrate great potential of the nanostructured Nb-Ag alloys for dental and orthopedic implants.

关键词： Nb-Ag alloys Wear Corrosion Antibacterial Biocompatibility

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Atomistic observation of in situ fractured surfaces at a V-doped WC–Co interface

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Journal of materials science & Technology 2022年第15期110卷 103-108页

作者： Congying Xiang Min Shen Chongze Hu Lok Wing Wong Hongbo Nie Huasheng Lei Jian Luo Jiong Zhao Zhiyang Yu State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350002China Department of NanoEngineering Program of Materials Science and EngineeringUniversity of California San DiegoLa JollaCA 92093United States Department of Applied Physics Hong Kong Polytechnic UniversityHong Kong 999077China School of Materials Science and Engineering Baise UniversityBaise 533000China

*** Cemented carbides are composites of WC ceramic phases and metallic Co binders that endow them with superior hardness and excellent *** metals are widely used as metal cutting and rock drilling tools[1,2].Their hardness is believed to be inversely proportional to the sizes of WC grains^([3]).Grain growth inhibitors are widely employed to achieve smaller grain sizes.

关键词： toughness grain sizes

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Highly stable hybrid single-micelle:A universal nanocarrier for hydrophobic bioimaging agents

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Nano Research 2022年第5期15卷 4582-4589页

作者： Qiaoyu Zhou Tiancong Zhao Mengli Liu Dongrui Yin Minchao Liu Ahmed AElzatahry Fan Zhang Dongyuan Zhao Xiaomin Li Department of Chemistry State Key Laboratory of Molecular Engineering of PolymersiChemShanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsFudan UniversityShanghai 200433China Materials Science and Technology Program College of Arts and SciencesQatar UniversityPO Box 2713DohaQatar

As the first-line technology,micelles play a pivotal role in in vivo delivery of theranostic agents because of their high biocompatibility and ***,in complex physiological environments(extreme dilution,pH,and oxidation or reduction,etc.),they generally suffer from structural instability and insufficient protection for encapsulated *** is urgent to reinforce the structural stability of the micelles at the single-micelle *** using the FDA-approved Pluronic F127 surfactants and indocyanine green(ICG)bioimaging agents as model,herein,we propose the silane-crosslinking assisted strategy to reinforce the structural stability of the *** from the traditional silane hydrolysis under the harsh experimental conditions(acidic,alkaline,and high temperature hydrothermal,etc.),the ICG loaded F127@SiO_(2) hybrid single-micelles(ICG@H-micelles)with controllable sizes(15-35 nm)are synthesized at neutral pH and room temperature,which is crucial for the maintenance of the physicochemical properties of the encapsulated *** the ultra-thin SiO_(2)(<5 nm)at hydrophilic layer of the single-micelle,the structural and fluorescence stability of ICG@H-micelles are much higher than the conventional micelle(ICG@micelles)in the simulated physiological environments of dilution,oxidation or reduction,and low *** of the high structural and fluorescence stability,the ICG@H-micelles also exhibit longer duration time in the tumor and gastrointestinal tract bioimaging.

关键词： micelle SiO_(2) inorganic-organic hybrid mesoporous material bioimaging

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Polarization modulation with optical lock-in detection reveals universal fluorescence anisotropy of subcellular structures in live cells

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Light(science & Applications) 2022年第1期11卷 50-62页

作者： Meiling Guan Miaoyan Wang Karl Zhanghao Xu Zhang Meiqi Li Wenhui Liu Jing Niu Xusan Yang Long Chen Zhenli Jing Micheal Q.Zhang Dayong Jin Peng Xi Juntao Gao Department of Biomedical Engineering College of Future TechnologyPeking UniversityBeijing 100871China UTS-SUStech Joint Research Centre for Biomedical Materials&Devices Department of Biomedical EngineeringCollege of EngineeringSouthern University of Science and TechnologyShenzhenGuangdongChina MOE Key Laboratory of Bioinformatics Bioinformatics DivisionCenter for Synthetic&Systems BiologyBNRistBeijingChina Center for Synthetic&Systems Biology Department of AutomationTsinghua UniversityBeijing 100084China Beijing Institute of Collaborative Innovation Beijing 100094China Department of Biological Sciences and Center for System Biology The University of Texas at DallasRichardson 75080USA School of Medical Sciences Tsinghua UniversityBeijing 100084China Institute for Biomedical Materials and Devices(IBMD) Faculty of ScienceUniversity of Technology SydneySydneyNSW 2007Australia National Biomedical Imaging Center Peking UniversityBeijing 100871China

The orientation of fluorophores can reveal crucial information about the structure and dynamics of their associated subcellular *** significant progress in super-resolution,fluorescence polarization microscopy remains limited to unique samples with relatively strong polarization modulation and not applicable to the weak polarization signals in samples due to the excessive background *** we apply optical lock-in detection to amplify the weak polarization modulation with *** novel technique,termed optical lock-in detection super-resolution dipole orientation mapping(OLID-SDOM),could achieve a maximum of 100 frames per second and rapid extraction of 2D orientation,and distinguish distance up to 50 nm,making it suitable for monitoring structural dynamics concerning orientation changes in ***-SDOM was employed to explore the universal anisotropy of a large variety of GFP-tagged subcellular organelles,including mitochondria,lysosome,Golgi,endosome,*** found that OUF(Orientation Uniformity Factor)of OLID-SDOM can be specific for different subcellular organelles,indicating that the anisotropy was related to the function of the organelles,and OUF can potentially be an indicator to distinguish normal and abnormal cells(even cancer cells).Furthermore,dual-color super-resolution OLID-SDOM imaging of lysosomes and actins demonstrates its potential in studying dynamic molecular *** subtle anisotropy changes of expanding and shrinking dendritic spines in live neurons were observed with real-time *** previously unobservable fluorescence anisotropy in various samples and indicating their underlying dynamic molecular structural changes,OLID-SDOM expands the toolkit for live cell research.

关键词： anisotropy Polarization concerning

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