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arXiv 2018年

作者： Kooij, Stefan Moqaddam, Ali Mazloomi de Goede, Thijs C. Derome, Dominique Carmeliet, Jan Shahidzadeh, Noushine Bonn, Daniel Van der Waals-Zeeman Institute University of Amsterdam Science Park Amsterdam904 Netherlands Chair of Building Physics Department of Mechanical and Process Engineering ETH Zurich Zurich8092 Switzerland Laboratory for Multiscale Studies in Building Physics Empa Swiss Federal Laboratories for Materials Science and Technology Dübendorf8600 Switzerland

In liquid spray applications, the sprays are often created by the formation and destabilization of a liquid sheet or jet. The disadvantage of such atomization processes is that the breakup is often highly irregular, causing a broad distribution of droplet sizes. As these sizes are controlled by the ligament corrugation and size, a monodisperse spray should consist of ligaments that are both smooth and of equal size. A straightforward way of creating smooth and equally sized ligaments is by droplet impact on a mesh. In this work we show that this approach does however not produce monodisperse droplets, but instead the droplet size distribution is very broad, with a large number of small satellite drops. We demonstrate that the fragmentation is controlled by a jet instability, where initial perturbations caused by the injection process result in long-wavelength disturbances that determine the final ligament breakup. During destabilization the crests of these disturbances are connected by thin ligaments which are the leading cause of the large number of small droplets. A secondary coalescence process, due to small relative velocities between droplets, partly masks this effect by reducing the amount of small droplets. Of the many parameters in this system, we describe the effect of varying the mesh size, mesh rigidity, impact velocity, wetting properties, keeping the liquid properties the same by focusing on water droplets only. We further perform Lattice Boltzmann modeling of the impact process that reproduces key features seen in the experimental data. Copyright © 2018, The Authors. All rights reserved.

关键词： Mesh generation

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Abstracts

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JOURNAL OF SPINAL CORD MEDICINE 2021年第SUPPL 1期44卷 S278-S324页

作者： [Anonymous] Department of Medicine Division of Physical Medicine and Rehabilitation University of Toronto Toronto ON CA KITE - Toronto Rehabilitation Institute University Health Network Toronto ON CA Institute for Health Policy Management and Evaluation University of Toronto Toronto ON CA Rehabilitation Sciences Institute University of Toronto Toronto ON CA Institute of Medical Sciences University of Toronto Toronto ON CA. Rehabilitation Sciences Institute University of Toronto ON CA KITE Research Institute-Toronto Rehab-University Health Network Toronto ON CA Physical Therapy Department University of Toronto ON CA Praxis Spinal Cord Institute Vancouver BC Université de Montréal (École de réadaptation) Montreal QC CA Institut de réadaptation Gingras-Linsay-de-Montréal Montreal QC CA Division of Physical Medicine & Rehabilitation Department of Medicine Faculty of Medicine & Dentistry University of Alberta Edmonton AB CA University of Calgary Calgary AB CA Alberta Health Services Centre for Family Medicine Kitchener ON CA McMaster University Department of Family Medicine Hamilton ON CA Dept. of Physical Therapy University of Toronto Toronto ON CA KITE-University Health Network Toronto ON CA Praxis Spinal Cord Institute Vancouver BC CA Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS) Quebec City QC CA Dept. of Rehabilitation Laval University Quebec City QC CA Institute of Health Policy Management and Evaluation University of Toronto Toronto ON CA School of Rehabilitation Science University of Saskatchewan Saskatoon SK CA Ontario Neurotrauma Foundation Toronto ON CA Canadian Spinal Research Organization Toronto ON CA CIUSSS du Centre-Sud-de-l ‘Île-de-Montréal (Installation Gingras-Lindsay) Montréal QC CA École de réadaptation Université de Montréal Montréal QC CA First Steps Wellness Centre Regina SK CA Stan Cassidy Centre for Rehabilitation Horizon Health Network Fredericton NB CA Departmen

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Inside Cover: Photoacoustic Imaging Quantifies Drug Release from Nanocarriers via Redox Chemistry of Dye-Labeled Cargo (Angew. Chem. Int. Ed. 12/2020)

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Angewandte Chemie International Edition 2020年第12期59卷

作者： Ananthakrishnan Soundaram Jeevarathinam Jeanne E. Lemaster Fang Chen Eric Zhao Assoc. Prof. Jesse V. Jokerst Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA Department of Radiology University of California San Diego 9500 Gilman Dr. La Jolla CA 92093 USA Current address: Stanford University USA Materials Science and Engineering Program University of California San Diego 9500 Gilman Dr. La Jolla CA 92093 USA

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A systematic study of anomalous bulk modulus in perovskite oxides

A systematic study of anomalous bulk modulus in perovskite o...

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第26届国际高压科学技术大会、第8届亚洲高压科技学术会议暨第19届中国高压科学技术会议(The 26th International Conference on High Pressure science & Technology)(AIRAPT 26)(ACHPR 8)(CHPC 19)

作者： Jianshi Zhou Materials Science and Engineering Program/Mechanical Engineering University of Texas at AustinAustinTX 78712 USA

An equation of state(EOS)is the primary input from experiment for thermodynamic functions of *** is the major form of the matter in the earth lowest mantle.

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Photoresponsive materials: Photoprogrammable Mesogenic Soft Helical Architectures: A Promising Avenue toward Future Chiro‐Optics (Adv. Mater. 41/2020)

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Advanced materials 2020年第41期32卷

作者： Zhi‐Gang Zheng Yan‐Qing Lu Quan Li Department of Physics East China University of Science and Technology Shanghai 200237 China National Laboratory of Solid State Microstructures Key Laboratory of Intelligent Optical Sensing and Manipulation Collaborative Innovation Center of Advanced Microstructures and College of Engineering and Applied Sciences Nanjing University Nanjing 210093 China Advanced Materials and Liquid Crystal Institute and Chemical Physics Interdisciplinary Program Kent State University Kent OH 44242 USA

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Innentitelbild: Photoacoustic Imaging Quantifies Drug Release from Nanocarriers via Redox Chemistry of Dye‐Labeled Cargo (Angew. Chem. 12/2020)

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Angewandte Chemie 2020年第12期132卷

作者： Ananthakrishnan Soundaram Jeevarathinam Jeanne E. Lemaster Fang Chen Eric Zhao Jesse V. Jokerst Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA Department of Radiology University of California San Diego 9500 Gilman Dr. La Jolla CA 92093 USA Current address: Stanford University USA Materials Science and Engineering Program University of California San Diego 9500 Gilman Dr. La Jolla CA 92093 USA

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Ultrafast Intercalation Enabled by Strong Solvent–Host Interactions: Understanding Solvent Effect at the Atomic Level

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Angewandte Chemie 2019年第48期131卷

作者： Yue Zhu Yujin Ji Zhengyu Ju Kang Yu Paulo J. Ferreira Yuanyue Liu Guihua Yu Materials Science and Engineering Program and Department of Mechanical Engineering The University of Texas at Austin Austin TX 78712 USA International Iberian Nanotechnology Laboratory Braga 4715-330 Portugal Mechanical Engineering Department and IDMEC Instituto Superior Técnico University of Lisbon Av. Rovisco Pais Lisboa 1049-001 Portugal

Solvents play an essential role in many areas of chemistry and is the cornerstone of understanding reactivity in solution‐phase reactions. Solvent effects have been widely observed in intercalation reactions; however, understanding of the influence of solvents on the thermodynamics and kinetics remains largely elusive in intercalation chemistry. Now, the solvent‐dependent kinetics of ferrocene intercalation into a layered vanadyl phosphate (VOPO 4 ⋅2 H 2 O) host is presented, with a special focus on primary alcohols. From methanol to 1‐hexnaol, the intercalation rate peaks in 1‐propanol (80 times faster than the slowest case in methanol). Similar kinetics of exfoliation are also found in these solvents without ferrocene. The correlation between intercalation and exfoliation is understood at atomic level by DFT calculations, which reveal the role of pre‐intercalated solvent molecules play in intralayer interactions, interlayer expansion, and layer sliding.

关键词： Exfoliation Lösungsmitteleffekte Lösungsmittel-Präinterkalation Lösungsmittel-Wirt-Wechselwirkungen Ultraschnelle Interkalation

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Physicochemical and Antimicrobial Properties of Gamma Irradiated HPMC-ZnO BNC Films

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materials Today: Proceedings 2018年第10期5卷 21398-21405页

作者： B. Lakshmeesha Rao R. Madhukumar K. Sharath Chandra R. Neelakandan Youjiang Wang Y. Sangappa Department of Studies in Physics Mangalore University Mangalagangotri Mangalore 574 199 India Department of Bioscience Mangalore University Mangalagangotri Mangalore 574 199 India Department of Textile Technology Anna University Chennai 600 025 India School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA 30332 USA

This work presents the effect of gamma irradiation on the physicochemical, mechanical, thermal and antibacterial properties of HPMC/ZnO bionanocomposite (BNC) films exposed to a Cobalt – 60 gamma source of average energy 1.25 MeV for various (0-250 kGy) doses. X-ray diffraction (XRD) study revealed that the crystallite size ( L XRD in Å) and crystallinity of the nanocomposites significantly increased up to 100 kGy, then decreased as the radiation dose increased. At lower dosage nanocomposites showed improved Young’s modulus and load capacity, and at higher dosage, the decrease in tensile strength ( TS ) and percentage elongation at break ( E ), suggesting degradation process in the HPMC matrix. Contact angle (CA) studies demonstrated HPMC/ZnO nanocomposites are more hydrophilic after gamma irradiation. The antibacterial activity of HPMC/ZnO nanocomposite films were effective even after gamma irradiation, making it suitable for food and pharmaceutical packaging applications

关键词： ZnO nanoparticles HPMC Structural properties Tensile strength Surface properties Antibacterial activity Active packaging

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Gate tunable giant anisotropic resistance in ultra-thin GaTe

arXiv

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arXiv 2019年

作者： Wang, Hanwen Chen, Mao-Lin Zhu, Mengjian Wang, Yaning Dong, Baojuan Sun, Xingdan Zhang, Xiaorong Cao, Shimin Li, Xiaoxi Huang, Jianqi Zhang, Lei Liu, Weilai Sun, Dongming Ye, Yu Yang, Teng Guo, Huaihong Qin, Chengbing Xiao, Liantuan Zhang, Jing Chen, Jianhao Han, Zheng Vitto Zhang, Zhidong Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang110016 China School of Material Science and Engineering University of Science and Technology of China Anhui230026 China College of Advanced Interdisciplinary Studies National University of Defense Technology Changsha410073 China State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Laser Spectroscopy Shanxi University Taiyuan030006 China State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-Electronics Shanxi University Taiyuan030006 China Collaborative Innovation Center of Extreme Optics Shanxi University Taiyuan030006 China International Center for Quantum Materials School of Physics Peking University Beijing100871 China State Key Lab for Mesoscopic Physics School of Physics Peking University Beijing China Collaborative Innovation Center of Quantum Matter Beijing100871 China College of Sciences Liaoning Shihua University Fushun113001 China

In crystals, the duplication of atoms often follows different periodicity along different directions. It thus gives rise to the so called anisotropy, which is usually even more pronounced in two dimensional (2D) materials due to the absence of z dimension. Indeed, in the emerging 2D materials, electrical anisotropy has been one of the focuses in recent experimental efforts.[1-8] However, key understandings of the in-plane anisotropic resistance in low-symmetry 2D materials, as well as demonstrations of model devices taking advantage of it, have proven difficult. Here, we show that, in few-layered semiconducting GaTe, electrical conductivity along x and y directions of the 2D crystal can be gate tuned from a ratio of less than one order to as large as 103. This effect is further demonstrated to yield an anisotropic memory resistor behaviour in ultra-thin GaTe, when equipped with an architecture of van der Waals floating gate. Our findings of gate tunable giant anisotropic resistance (GAR) effect pave the way for potential applications in nano-electronics such as multifunctional directional memories in the 2D limit. Copyright © 2019, The Authors. All rights reserved.

关键词： Anisotropy

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Three-dimensional bioprinted glioblastoma microenvironments model cellular dependencies and immune interactions

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细胞研究（英文版） 2020年第10期30卷 833-853页

作者： Min Tang Qi Xie Ryan C.Gimple Zheng Zhong Trevor Tam Jing Tian Reilly L.Kidwell Qiulian Wu Briana C.Prager Zhixin Qiu Aaron Yu Zhe Zhu Pinar Mesci Hui Jing Jacob Schimelman Pengrui Wang Derrick Lee Michael H.Lorenzini Deobrat Dixit Linjie Zhao Shruti Bhargava Tyler E.Miller Xueyi Wan Jing Tang Bingjie Sun Benjamin F.Cravatt Alysson R.Muotri Shaochen Chen Jeremy N.Rich Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA Division of Regenerative Medicine Department of MedicineUniversity of California San Diego La Jolla CA 92037 USA Sanford Consortium for Regenerative Medicine 2880 Torrey Pines Scenic Drive La Jolla CA 92037 USA School of Life Sciences Westlake University Hangzhou Zhejiang 310024 China Key Laboratory of Growth Regulation and Translation Research of Zhejiang Province School of Life Sciences Westlake University Hangzhou Zhejiang 310024 China Institute of Basic Medical Sciences Westlake Institute for Advanced Study Hangzhou Zhejiang 310024 China Department of Pathology Case Western University Cleveland OH USA Department of Cellular and Molecular Medicine Cleveland Clinic Lerner Research Institute Cleveland OHUSA Department of Cellular & Molecular Medicine School of Medicine University of California San Diego La Jolla CA 92093 USA Department of Pediatrics/Rady Children's Hospital San Diego School of Medicine University of California San Diego ka Jolla CA 92093 USA The Department of Chemistry and The Skaggs Institute for Chemical Biology The Scripps Research Institute La Jolla CA 92037 USA Materials Science and Engineering Program University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA Department of Pathology and Center for Cancer Research Massachusetts General Hospital and Harvard Medical School Boston MA 02114 USA Division of Biological Sciences University of California San Diego La Jolla CA 92093 USA Kavli Institute for Brain and Mind University of California San Diego La JollaCA 92093 USA Center for Academic Research and Training in Anthropogeny (CARTA) La Jolla CA 92093 USA Department of Bioengineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA Department of Neurosciences School of Medicine University of California San Diego La Jolla CA 92037 USA

Brain tumors are dynamic complex ecosystems with multiple cell *** model the brain tumor microenvironment in a reproducible and scalable system,we developed a rapid three-dimensional (3D) bioprinting method to construct clinically relevant biomimetic tissue *** recurrent glioblastoma,macrophages/microglia prominently contribute to the tumor *** parse the function of macrophages in 3D,we compared the growth of glioblastoma stem cells (GSCs) alone or with astrocytes and neural precursor cells in a hyaluronic acid-rich hydrogel,with or without *** constructs integrating macrophage recapitulate patient-derived transcriptional profiles predictive of patient survival,maintenance of stemness,invasion,and drug ***-genome CRISPR screening with bioprinted complex systems identified unique molecular dependencies in GSCs,relative to sphere *** bioprinted models serve as a scalable and physiologic platform to interrogate drug sensitivity,cellular crosstalk,invasion,context-specific functional dependencies,as well as immunologic interactions in a speciesmatched neural environment.

关键词： Cancer microenvironment Cancer stem cells CNS cancer

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