检索结果-内蒙古大学图书馆

arXiv 2017年

作者： Miller, Kevin J. Hallman, Kent A. Haglund, Richard F. Weiss, Sharon M. Interdisciplinary Graduate Program in Materials Science Vanderbilt University NashvilleTN37235 United States Department of Physics and Astronomy Vanderbilt University NashvilleTN37235 United States Department of Electrical Engineering and Computer Science Vanderbilt University NashvilleTN37235 United States

Phase-change materials (PCMs) have emerged as promising active elements in silicon (Si) photonic systems. In this work, we design, fabricate, and characterize a hybrid Si-PCM optical modulator. By integrating vanadium dioxide (a PCM) within a Si photonic waveguide, in a non-resonant geometry, we demonstrate ~ 10 dB broadband modulation with a PCM length of 500 nm. Copyright © 2017, The Authors. All rights reserved.

关键词： Phase change materials

来源：评论

学校读者我要写书评

暂无评论

Designing a Perylene Diimide/Fullerene Hybrid as Effective Electron Transporting Material in Inverted Perovskite Solar Cells with Enhanced Efficiency and Stability

引用

Angewandte Chemie 2019年第25期131卷

作者： Zhenghui Luo Fei Wu Teng Zhang Xuan Zeng Yiqun Xiao Tao Liu Cheng Zhong Xinhui Lu Linna Zhu Shihe Yang Chuluo Yang Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Department of Chemistry Wuhan University Wuhan 430072 P. R. China Shenzhen Key Laboratory of Polymer Science and Technology College of Materials Science and Engineering Shenzhen University Shenzhen 518060 P. R. China Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energy Faculty of Materials & Energy Southwest University Chongqing 400715 P. R. China Nano Science and Technology Program Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong P. R. China Department of Physics Chinese University of Hong Kong New Territories Hong Kong P. R. China Guangdong Key Lab of Nano-Micro Material Research School of Chemical Biology and Biotechnology Shenzhen Graduate School Peking University Xili University Town Shenzhen 518055 Guangdong P. R.China

Electron transport materials (ETM) play an important role in the improvement of efficiency and stability for inverted perovskite solar cells (PSCs). This work reports an efficient ETM, named PDI‐C 60 , by the combination of perylene diimide (PDI) and fullerene. Compared to the traditional PCBM, this strategy endows PDI‐C 60 with slightly shallower energy level and higher electron mobility. As a result, the device based on PDI‐C 60 as electron transport layer (ETL) achieves high power conversion efficiency (PCE) of 18.6 %, which is significantly higher than those of the control devices of PCBM (16.6 %) and PDI (13.8 %). The high PCE of the PDI‐C 60 ‐based device can be attributed to the more matching energy level with the perovskite, more efficient charge extraction, transport, and reduced recombination rate. To the best of our knowledge, the PCE of 18.6 % is the highest value in the PSCs using PDI derivatives as ETLs. Moreover, the device with PDI‐C 60 as ETL exhibits better device stability due to the stronger hydrophobic properties of PDI‐C 60 . The strategy using the PDI/fullerene hybrid provides insights for future molecular design of the efficient ETM for the inverted PSCs.

关键词： Elektronentransportmaterial Fullerene Perowskit-Solarzellen Perylendiimide Stromwandlungswirkungsgrad

来源：评论

学校读者我要写书评

暂无评论

Recycling Of PP/LDPE blend: Miscibility, thermal properties, rheological behavior and crystal structure 74

Recycling Of PP/LDPE blend: Miscibility, thermal properties,...

引用

74th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Indianapolis 2016

作者： Aumnate, Chuanchom Spicker, Claudia Kiesel, Raphael Samadi, Majid Rudolph, Natalie Mechanical Engineering Department Polymer Engineering Center University of Wisconsin-Madison WI United States Textile Science Department of Design Studies and Materials Science Graduate Program University of Wisconsin-Madison WI United States

ISBN: (纸本)9780692719619

Blending of plastics used in packaging is an interesting approach for recycling or upcycling. Therefore, this study focused on the effects of processing on the properties of recycled PP and PP/LDPE blends. MFI measurements, Differential Scanning Calorimetry (DSC) and hot-stage polarized optical microscopy techniques were used to investigate the miscibility of PP/LDPE blends based on the thermal properties, degree of crystallinity, crystallization and morphology development in the blends. The MFI indicates, that PP and PP/LDPE blends are marginally sensitive to degradation at common processing conditions. The degree of crystallinity of the blends decreases with an increase of the LDPE content. Furthermore, the spherulite growth rate and crystal size of PP decrease with an increase of LDPE content. The shifts of crystallization temperatures from the DSC measurement, in conjunction with the crystallization kinetics, indicate that PP/LDPE (25 wt% LDPE) is partially miscible.

关键词： Crystal structure

来源：评论

学校读者我要写书评

暂无评论

Supercapacitors: Carbon-Nanosheet Based Large-Area Electrochemical Capacitor that is Flexible, Foldable, Twistable, and Stretchable (Small 43/2018)

引用

Small 2018年第43期14卷

作者： Jong Han Jun Hyeonjun Song Changsoon Kim In-Suk Choi Youngjin Jeong Ji-Hoon Lee Department of Information Communication Materials and Chemistry Convergence Technology Soongsil University Seoul 06978 Republic of Korea Program in Nano Science and Technology Graduate School of Convergence Science and Technology Seoul National University Seoul 08826 Republic of Korea Advanced Institutes of Convergence Technology Suwon Gyeonggi 16229 Republic of Korea Department of Materials Science and Engineering Seoul National University Seoul 08826 Republic of Korea Department of Organic Materials and Fiber Engineering Soongsil University Seoul 06978 Republic of Korea Advanced Functional Thin Films Department Surface Technology Division Korea Institute of Materials Science (KIMS) Changwon Gyeongnam 51508 Republic of Korea

来源：评论

学校读者我要写书评

暂无评论

Correction: Extended visible to near-infrared harvesting of earth-abundant FeS2–TiO2 heterostructures for highly active photocatalytic hydrogen evolution

引用

Green Chemistry 2018年第11期20卷 2663-2663页

作者： Tsung-Rong Kuo Hsiang-Ju Liao Yu-Ting Chen Chuan-Yu Wei Chia-Che Chang Yi-Chia Chen Yi-Hsuan Chang Jou-Chun Lin Yi-Cheng Lee Cheng-Yen Wen Shao-Sian Li Kung-Hsuan Lin Di-Yan Wang Graduate Institute of Nanomedicine and Medical Engineering College of Biomedical Engineering Taipei Medical University Taipei 11031 Taiwan International Ph.D. Program in Biomedical Engineering College of Biomedical Engineering Taipei Medical University Taipei 11031 Taiwan Department of Chemistry Tunghai University Taichung 40704 Taiwan Institute of Physics Academia Sinica Taipei 11529 Taiwan Department of Materials Science and Engineering National Taiwan University Taipei Taiwan Graduate Institute of Biomedical Optomechatronics College of Biomedical Engineering Taipei Medical University Taipei 11031 Taiwan

Correction for ‘Extended visible to near-infrared harvesting of earth-abundant FeS2–TiO2 heterostructures for highly active photocatalytic hydrogen evolution’ by Tsung-Rong Kuo et al., Green Chem., 2018, 20, 1640–...

Correction for ‘Extended visible to near-infrared harvesting of earth-abundant FeS₂–TiO₂ heterostructures for highly active photocatalytic hydrogen evolution’ by Tsung-Rong Kuo et al., Green Chem., 2018, 20, 1640–1647.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A continuum poisson-‐boltzmann model for membrane channel proteins

arXiv

引用

arXiv 2017年

作者： Xiao, Li Diao, Jianxiong Greene, D'Artagnan Wang, Junmei Luo, Ray Department of Biomedical Engineering University of California IrvineCA92697 United States Department of Molecular Biology and Biochemistry University of California IrvineCA92697 United States Chemical and Materials Physics Graduate Program University of California IrvineCA92697 Department of Chemical Engineering and Materials Science University of California IrvineCA92697 United States Department of Pharmaceutical Sciences University of Pittsburg PittsburghPA15261 United States

来源：评论

学校读者我要写书评

暂无评论

Immunotherapy: engineering an Artificial T‐Cell Stimulating Matrix for Immunotherapy (Adv. Mater. 23/2019)

引用

Advanced materials 2019年第23期31卷

作者： John W. Hickey Yi Dong Jae Wook Chung Sebastian F. Salathe Hawley C. Pruitt Xiaowei Li Calvin Chang Andrew K. Fraser Catherine A. Bessell Andrew J. Ewald Sharon Gerecht Hai‐Quan Mao Jonathan P. Schneck Department of Biomedical Engineering School of Medicine Baltimore MD 21218 USA Institute for Cell Engineering School of Medicine Baltimore MD 21205 USA Department of Pathology School of Medicine Baltimore MD 21287 USA Translational Tissue Engineering Center Baltimore MD 21287 USA Institute for NanoBioTechnology Baltimore MD 21218 USA Graduate Program in Immunology School of Medicine Baltimore MD 21205 USA Department of Chemical and Biomolecular Engineering Whiting School of Engineering Baltimore MD 21218 USA Department of Biology Krieger School of Arts and Sciences Baltimore MD 21218 USA Department of Materials Science and Engineering Whiting School of Engineering Baltimore MD 21218 USA Department of Cell Biology and Center for Cell Dynamics School of Medicine Baltimore MD 21205 USA Department of Oncology School of Medicine Baltimore MD 21205 USA Physical Sciences‐Oncology Center Baltimore MD 21218 USA Department of Medicine School of Medicine Johns Hopkins University Baltimore MD 21205 USA

来源：评论

学校读者我要写书评

暂无评论

Study on chemotaxis and chemokinesis of bone marrow-derived mesenchymal stem cells in hydrogel-based 3D microfluidic devices

引用

Biomaterials Research 2016年第1期20卷 1-8页

作者： Yoon, Dayoung Kim, Hyerim Lee, Eojin Park, Min Hee Chung, Seok Jeon, Hojeong Ahn, Cheol-Hee Lee, Kangwon Center for Biomaterials Korea Institute of Science and Technology Seoul South Korea Research Institute of Advanced Materials (RIAM) Department of Materials Science and Engineering Seou National University Seoul South Korea Program in Nanoscience and Technology Graduate School of Convergence Science and Technology Seou National University Seoul South Korea School of Mechanical Engineering Korea University Seoul South Korea Advanced Institutes of Convergence Technology Gyeonggi-do South Korea

Background: Controlling the fate of mesenchymal stems cells (MSCs) including proliferation, migration and differentiation has recently been studied by many researchers in the tissue engineering field. Especially, recruitment of stem cells to injury sites is the first and crucial step in tissue regeneration. Although significant progress has been made in the chemotactic migration of MSCs, MSC migration in three dimensional environments remains largely unknown. We developed a 3D hydrogel-based microfluidic-device to study the migration behavior of human MSCs in the presence of stromal-cell derived factor-1α (SDF-1α), interleukin 8 (IL-8) and Substance P (SP) which have been utilized as chemoattractant candidates of human mesenchymal stem cells (hMSCs). Results: We systematically investigated the chemotactic migration behaviors of hMSCs and their responses to SDF-1a, IL-8, and SP. SDF-1α was shown to be the most fascinating chemoattractant candidate among those factors at a certain time point. We also found that each chemokine showed different chemoattractant abilities according to their concentration. In the case of SP, this factor showed chemokinesis not chemotaxis. Especially at a 7-8×10^-8 M concentration range, the chemokinesis ability driven by SP was further increased. The data suggest that some factors at the optimal concentration exhibit chemokinesis or chemotaxis in a 3D hydrogel-based microfluidic device. Conclusion: In this study on chemotaxis and chemokinesis of hMSCs, the system parameters such as chemokine concentration, system stability, and 2D or 3D microenvironment are critically important to obtain meaningful results. © 2016 The Author(s).

关键词： Chemokinesis Chemotaxis Mesenchymal stem cells Microfluidic device

来源：评论

学校读者我要写书评

暂无评论

Publisher's Note: "Chemical vapor deposition of monolayer MoS2directly on ultrathin Al2O3for low-power electronics" [Appl. Phys. Lett. 110, 053101 (2016)]

引用

Applied Physics Letters 2017年第9期110卷

作者： Bergeron, Hadallia Sangwan, Vinod K. McMorrow, Julian J. Campbell, Gavin P. Balla, Itamar Liu, Xiaolong Bedzyk, Michael J. Marks, Tobin J. Hersam, Mark C. Department of Materials Science and Engineering Northwestern University EvanstonIllinois60208 United States Applied Physics Graduate Program Northwestern University EvanstonIllinois60208 United States Department of Physics and Astronomy Northwestern University EvanstonIllinois60208 United States Department of Chemistry Northwestern University EvanstonIllinois60208 United States Department of Electrical Engineering and Computer Science Northwestern University EvanstonIllinois60208 United States

This article was originally published online on 30 January 2017. Due to a production error, outdated versions of Figures 1 and 4 appeared in the article as orig

关键词：

来源：评论

学校读者我要写书评

暂无评论

Potential Fluctuations at Low Temperatures in Mesoscopic-Scale SmTiO3/SrTiO3/SmTiO3 Quantum Well Structures

arXiv

引用

arXiv 2017年

作者： Hardy, Will J. Isaac, Brandon Marshall, Patrick Mikheev, Evgeny Zhou, Panpan Stemmer, Susanne Natelson, Douglas Applied Physics Graduate Program Smalley-Curl Institute Rice University HoustonTX United States Materials Department University of California Santa BarbaraCA United States Department of Physics and Astronomy Rice University HoustonTX United States Department of Electrical and Computer Engineering Rice University HoustonTX United States Department of Materials Science and Nanoengineering Rice University HoustonTX United States

Heterointerfaces of SrTiO3 with other transition metal oxides make up an intriguing family of systems with a bounty of coexisting and competing physical orders. Some examples, such as LaAlO3/SrTiO3, support a high carrier density electron gas at the interface whose electronic properties are determined by a combination of lattice distortions, spin-orbit coupling, defects, and various regimes of magnetic and charge ordering. Here, we study electronic transport in mesoscale devices made with heterostructures of SrTiO3 sandwiched between layers of SmTiO3, in which the transport properties can be tuned from a regime of Fermi-liquid like resistivity (ρ ∝ T2) to a non-Fermi liquid (ρ ∝ T5/3) by controlling the SrTiO3 thickness. In mesoscale devices at low temperatures, we find unexpected voltage fluctuations that grow in magnitude as T is decreased below 20 K, are suppressed with increasing contact electrode size, and are independent of the drive current and contact spacing distance. Magnetoresistance fluctuations are also observed, which are reminiscent of universal conductance fluctuations but not entirely consistent with their conventional properties. Candidate explanations are considered, and a mechanism is suggested based on mesoscopic temporal fluctuations of the Seebeck coefficient. An improved understanding of charge transport in these model systems, especially their quantum coherent properties, may lead to insights into the nature of transport in strongly correlated materials that deviate from Fermi liquid theory. Copyright © 2017, The Authors. All rights reserved.

关键词： Rare earths

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：