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Improving Methods for Imaging Viral Pathogens Using Liquid Transmission Electron Microscopy

Microscopy and Microanalysis 2024年第SUPPLEMENT_1期30卷

作者： DiCecco, Liza-Anastasia Kaylor, Liam Berry, Samantha Gray, Jennifer L Department of Biomedical Engineering Pennsylvania State University University Park PA.USA Molecular Cellular and Integrative Biosciences Graduate Program Huck Institutes of the Life Sciences Pennsylvania State University University Park PA USA Materials Research Institute Pennsylvania State University University Park PA USA

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Titelbild: Cyclotetrabenzil Derivatives for Electrochemical Lithium-Ion Storage (Angew. Chem. 29/2023)

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Angewandte Chemie 2023年第29期135卷

作者： Jianing Meng Dr. Alexandra Robles Dr. Said Jalife Wen Ren Ye Zhang Dr. Lihong Zhao Dr. Yanliang Liang Prof. Dr. Judy I. Wu Prof. Dr. Ognjen Š. Miljanić Prof. Dr. Yan Yao Department of Chemistry University of Houston 3585 Cullen Blvd. Houston TX-77204-5003 USA Department of Chemical and Biomolecular Engineering University of Houston Houston TX-77204-4004 USA Department of Electrical and Computer Engineering and Materials Science and Engineering Program University of Houston Houston TX-77204 USA Texas Center for Superconductivity at the University of Houston University of Houston Houston TX-77204 USA

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Self-cross-linked arrays enabled flexible mechanical sensors for monitoring the body tremor

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npj Flexible Electronics 2020年第1期4卷 73-81页

作者： Xuewen Wang Wei Fu Guanhui Gao Mandeep Singh Mehay Lu Zheng Hong Wang Wu Zhao Kian Ping Loh Ting Zhang Wei Huang Zheng Liu Frontiers Science Center for Flexible Electronics(FSCFE)&Shaanxi Institute of Flexible Electronics(SIFE) Northwestern Polytechnical University127 West Youyi RoadXi’an 710072China MIIT Key Laboratory of Flexible Electronics(KLoFE) Northwestern Polytechnical University127 West Youyi RoadXi’an 710072China Department of Chemistry and Centre for Advanced 2D Materials National University of Singapore3 Science Drive 3117543 SingaporeSingapore Paul-Drude-Institut für Festkörperelektronik LeibnizInstitut im Forschungsverbund BerlinHausvogteiplatz 5-7Berlin 10117Germany School of Materials Science and Engineering Nanyang Technological University50 Nanyang AvenueSingapore 640260Singapore Institute of Biomedical Materials and Engineering(IBME) Northwestern Polytechnical University127 West Youyi RoadXi’an 710072China School of Information Science and Technology Northwest UniversityXi’an 710069China i-Lab Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Centre for Micro-/Nano-electronics(NOVITAS) School of Electrical and Electronic EngineeringNanyang Technological UniversitySingapore 639798Singapore

Thin-film electronics played an important role in flexible healthcare sensor *** common status of their constituent blocks are solid film and network ***,the solid film could only sustain bend in a narrow range due to cracks,and the network structure decreased the sensitivity of flexion sensors due to the strong interactions between *** materials and technologies are urgently required for flexible sensing electronics,to produce the reliable data for assessment of the human ***,we report on a novel three-dimensional(3D)carbon nanorods array(CNA)that is characterized as vertically aligned nanorods and self-cross-linked *** also demonstrate the CNA-based flexible healthcare sensors in monitoring the Parkinsonian *** with two-dimensional(2D)carbon nanotube networks and solid thin films,such self-cross-linked geometries are highly resistant to crack and fragmentation under *** the meantime,it shows high sensitivity and good stability(~10,000 times)to detect the *** CNA-based flexible devices are capable of recording low-frequency vibrations(<6 Hz)and make it excellent to monitor the rest tremor of the human body,which is an initial symptom of Parkinson’s *** 3D self-cross-linked CNA film shows great potential in the fabrication of cost-effective and durable flexible sensors for early diagnosis of disease by monitoring the health-related rest tremors.

关键词： nanowires film network

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Cover Picture: Cyclotetrabenzil Derivatives for Electrochemical Lithium-Ion Storage (Angew. Chem. Int. Ed. 29/2023)

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Angewandte Chemie International Edition 2023年第29期62卷

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Accelerating Real-Time Imaging for Radiotherapy: Leveraging Multi-GPU Training with PyTorch

Accelerating Real-Time Imaging for Radiotherapy: Leveraging ...

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International Conference on Machine Learning and Applications (ICMLA)

作者： Ruth Obe Brandt Kaufmann Kaelen Baird Sam Kadel Yasmin Soltani Mostafa Cham Matthias K. Gobbert Carlos A. Barajas Zhuoran Jiang Vijay R. Sharma Lei Ren Stephen W. Peterson Jerimy C. PoIf Dept. of Computer Science and of Software Engineering U. of Houston-Clear Lake USA Dept. of Mathematics and Statistics U. of San Francisco USA Dept. of Computer Science and of Mathematics Skidmore College USA Dept. of Computer Science and of Psychology Mount Holyoke College USA Dept. of Biomedical Engineering U. of Houston USA Dept. of Information Systems U. of Maryland Baltimore County Dept. of Mathematics and Statistics U. of Maryland Baltimore County Medical Physics Graduate Program Duke University USA Dept. of Radiation Oncology U. of Maryland School of Medicine USA Department of Radiation Oncology U. of Maryland School of Medicine USA Dept. of Physics U. of Cape Town South Africa H3D Inc. USA

Proton beam therapy is an advanced form of cancer radiotherapy that uses high-energy proton beams to deliver precise and targeted radiation to tumors. This helps to mit-igate unnecessary radiation exposure in healthy tissues. Real-time imaging of prompt gamma rays with Compton cameras has been suggested to improve therapy efficacy. However, the camera's non-zero time resolution leads to incorrect interaction classifications and noisy images that are insufficient for accurately assessing proton delivery in patients. To address the challenges posed by the Compton camera's image quality, machine learning techniques are employed to classify and refine the generated data. These machine-learning techniques include recurrent and feedforward neural networks. A PyTorch model was designed to improve the data captured by the Compton camera. This decision was driven by PyTorch's flexibility, powerful capabilities in handling sequential data, and enhanced G PU usage. This accelerates the model's computations on large-scale radiotherapy data. Through hyperparameter tuning, the validation accuracy of our PyTorch model has been improved from an initial 7 % to over 60 %. Moreover, the PyTorch Distributed Data Parallelism strategy was used to train the RNN models on multiple G PU s, which significantly reduced the training time with a minor impact on model accuracy.

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Electronic and magnetic properties of the topological semimetal candidate NdSbTe

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Physical Review B 2020年第23期101卷 235161-235161页

作者： Krishna Pandey Rabindra Basnet Aaron Wegner Gokul Acharya Md Rafique Un Nabi Jiangwei Liu Jian Wang Y. K. Takahashi Bo Da Jin Hu Materials Science and Engineering Program Institute for Nanoscience and Engineering University of Arkansas Fayetteville Arkansas 72701 USA Department of Physics University of Arkansas Fayetteville Arkansas 72701 USA Research Center for Functional Materials National Institute for Materials Science Tsukuba Ibaraki 305-0047 Japan Institute for Materials Research and Center for Spintronics Research Network Tohoku University Sendai 980–8577 Japan Research Center for Magnetic and Spintronic Materials National Institute for Materials Science Sengen 1-2-1 Tsukuba Ibaraki 305-0047 Japan Research and Services Division of Materials Data and Integrated System National Institute for Materials Science Tsukuba Ibaraki 305-0044 Japan

ZrSiS-type materials represent a large material family with unusual coexistence of topological nonsymmorphic Dirac fermions and nodal-line fermions. As a special group of ZrSiS family, LnSbTe (Ln=lanthaniderare−earth) compounds provide a unique opportunity to explore new quantum phases due to the intrinsic magnetism induced by Ln. Here we report the single-crystal growth and characterization of NdSbTe, a previously unexplored LnSbTe compound. NdSbTe has an antiferromagnetic ground state with field-driven metamagnetic transitions similar to other known LnSbTe, but exhibits distinct enhanced electronic correlations characterized by large a Sommerfeld coefficient of 115mJ/molK2, which is the highest among the known LnSbTe compounds. Furthermore, our transport studies have revealed the coupling with magnetism and signatures of Kondo localization. All these findings establish NdSbTe as a platform for observing phenomena arising from the interplay between magnetism, topology, and electron correlations.

关键词： Magnetic order Magnetotransport Topological phases of matter Magnetic systems Single crystal materials Strongly correlated systems Topological materials Magnetic techniques Specific heat measurements Transport techniques

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Formation and distribution of Au nanoparticles within Si lamellae of the Au-Si eutectic microstructure

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Acta Materialia 2025年 296卷

作者： Rotem Zilberberg Iryna Polishchuk Alexander Katsman Boaz Pokroy Department of Materials Science and Engineering Technion – Israel Institute of Technology 32000 Haifa Israel Russell Berrie Nanotechnology Institute Technion – Israel Institute of Technology 32000 Haifa Israel The Nancy and Stephen Grand Technion Energy Program Technion − Israel Institute of Technology Haifa 3200003 Israel

Eutectic solidification is a self-driven phase separation process that enables the straightforward synthesis of complex micro- and nanostructures in a single step. However, impurities incorporated into the phases during coupled growth can affect the material properties, posing challenges for its practical application. This study investigates the formation and incorporation of Au nanoparticles (NPs) within Si lamellae formed by the melting and solidification of Au-Si thin films. Our findings show that faster cooling rates of the eutectic melt increase the Au concentration in the Si lamellae beyond its solubility limit. We found a homogeneous distribution of Au NPs throughout the Si bulk, and additional bands of NPs, 2–3 times larger in size than in the bulk, aligned along Σ3 {111} twin boundaries (TBs). We present a theoretical model for Au NPs formation where Au clusters nucleate during solidification in the near-surface liquid layer on the solidification front (SF), serving as sinks for Au atoms and forming the NPs. The advancing SF traps these NPs within the solid Si, creating the homogeneous particle distribution inside the Si lamellae. Au diffusion in defect-free solid Si is slow, even at the eutectic temperature, making Au NPs coarsening in the bulk negligible. However, the activation energy for Au diffusion along TBs is lower than in the bulk, accelerating growth and coarsening along the TBs, producing bands of larger NPs. This study provides a new understanding of the mechanisms governing the formation and incorporation of low-soluble impurity NPs in eutectic microstructures and their evolution along TBs.

关键词： Eutectic solidification Nanoparticles Twin boundaries Diffusion

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Correction: Nucleic acid detection with single-base specificity integrating isothermal amplification and light-up aptamer probes

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Nanoscale 2024年第44期16卷 20774页

作者： Jaekyun Baek Jihyun Park Youngeun Kim Interdisciplinary Program in Bioengineering Seoul National University Seoul 08826 Republic of Korea. youngeunkim@snu.ac.kr. Research Institute of Advanced Materials Seoul National University Seoul 08826 Republic of Korea. Department of Materials Science and Engineering Seoul National University Seoul 08826 Republic of Korea.

Correction for 'Nucleic acid detection with single-base specificity integrating isothermal amplification and light-up aptamer probes' by Jaekyun Baek , , 2024, https://***/10.1039/D4NR01638F.

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Micro/nano-structured TiO2 surface with dual-functional antibacterial effects for biomedical applications

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Bioactive materials 2019年第1期4卷 346-357页

作者： Xiang Ge Chengzu Ren Yonghui Ding Guang Chen Xiong Lu Kefeng Wang Fuzeng Ren Meng Yang Zhuochen Wang Junlan Li Xinxin An Bao Qian Yang Leng Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education School of Mechanical EngineeringTianjin UniversityTianjin300354China Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina Center for Advanced Regenerative Engineering Northwestern UniversityEvanstonIL60208USA Department of Biomedical Engineering Northwestern UniversityEvanstonIL 60208USA Key Lab of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu610031China National Engineering Research Center for Biomaterials Sichuan UniversityChengdu610064China epartment of Materials Science and Engineering Southern University of Science and TechnologyShenzhenGuangdong518055China State Key Laboratory of Precision Measuring Technology and Instruments Tianjin UniversityTianjin300072China School of Humanities Tianjin Agricultural UniversityTianjin300384China Department of Machine Elements and Engineering Design University of KasselKassel34125Germany

Implant-associated infections are generally difficult to cure owing to the bacterial antibiotic resistance which is attributed to the widespread usage of *** the global threat and increasing influence of antibiotic resistance,there is an urgent demand to explore novel antibacterial strategies other than using ***,using a certain surface topography to provide a more persistent antibacterial solution attracts more and more ***,the clinical application of biomimetic nano-pillar array is not satisfactory,mainly because its antibacterial ability against Gram-positive strain is not good ***,the pillar array should be equipped with other antibacterial agents to fulfill the bacteriostatic and bactericidal requirements of clinical ***,we designed a novel model substrate which was a combination of periodic micro/nano-pillar array and TiO2 for basically understanding the topographical bacteriostatic effects of periodic micro/nano-pillar array and the photocatalytic bactericidal activity of *** innovation may potentially exert the synergistic effects by integrating the persistent topographical antibacterial activity and the non-invasive X-ray induced photocatalytic antibacterial property of TiO2 to combat against antibiotic-resistant implant-associated ***,to separately verify the topographical antibacterial activity of TiO2 periodic micro/nano-pillar array,we systematically investigated its effects on bacterial adhesion,growth,proliferation,and viability in the dark without involving the photocatalysis of *** pillar array with sub-micron motif size can significantly inhibit the adhesion,growth,and proliferation of Staphylococcus aureus(***)and Escherichia coli(***).Such antibacterial ability is mainly attributed to a spatial confinement size-effect and limited contact area availability generated by the special topography of pillar ***,the pillar array is not lethal to S

关键词： Titanium dioxide Micro/nano-structured surface Topographical bacteriostatic activity Photocatalytic bactericidal property Non-invasive treatment

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Albumin-Phthalocyanine Supramolecular Complex Shows Favorable Blood-Brain Barrier Penetration and Enhanced Sonodynamic Therapy for Gliomas

SSRN

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SSRN 2023年

作者： Yoon, Juyoung Wang, Rui Kim, Jaehoon Li, Xingshu Kim, Gyoungmi Yang, Mengyao An, Jong Min Yu, Fabiao Kim, Dokyoung College of Chemistry State Key Laboratory of Photocatalysis for Energy and the Environment Fujian Provincial Key Laboratory for Cancer Metastasis Chemoprevention and Chemotherapy Fuzhou University Fuzhou350108 China The First Affiliated Hospital of Hainan Medical University Hainan Medical University Haikou571199 China Department of Chemistry and Nanoscience Ewha Womans University Seoul03760 Korea Republic of Department of Biomedical Science Graduate School Kyung Hee University Seoul02447 Korea Republic of Key Laboratory of Emergency and Trauma Ministry of Education Key Laboratory of Hainan Trauma and Disaster Rescue Engineering Research Center for Hainan Bio-Smart Materials and Bio-Medical Devices Key Laboratory of Hainan Functional Materials and Molecular Imaging College of Emergency and Trauma Hainan Medical University Haikou571199 China

The high penetration depth of sonodynamic therapy (SDT) and the instantaneous opening of the blood–brain barrier (BBB) due to ultrasound stimulation make SDT superior for treating gliomas. Here, we construct amphiphilic cationic phthalocyanine (ZnPc) and combine it with human serum albumin (HSA) to create a ZnPc–HSA supramolecular complex through green synthesis. The urgent need for energy to achieve rapid tumor growth and the strong expression of the albumin binding-related protein gives ZnPc–HSA the ability to cross the BBB and enrich gliomas. Moreover, this complex increases the biocompatibility and penetration depth (by approximately 1.75 times) and enhances reactive oxygen species generation (by approximately 16.54 times) after ultrasound stimulation. Further, ZnPc–HSA-based SDT effectively inhibits the growth of gliomas in diseased mice and prolongs their lifetime. This study provides a promising platform for future construction of supramolecular biomimetic nanomaterials for SDT to treat brain disorders. © 2023, The Authors. All rights reserved.

关键词： Biocompatibility

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