检索结果-南通市图书馆

Continuous synthesis of iron oxide （Fe3O4） nanoparticles via thermal decomposition

Particuology 2016年第3期14卷 47-53页

作者： William Glasgow Ben Fellows Bin Qi Taghi Darroudi Christopher Kitchens Longfei Ye Thomas M. Crawford O. Thompson Mefford department of Material Science and Engineering Center for Optical Materials Science and Engineering Technologies Clemson University 91 Technology Drive Anderson SC29625 USA Electron Microscopy Laboratory Department of Materials Science and Engineering Clemson University Clemson SC29625 USA department of Chemical and Biomolecular Engineering Clemson University Clemson SC 29634 USA department of physics and astronomy and smart state center for experimental nanoscale physics University of South Carolina 712 Main Street Columbia SC29208 USA

Iron oxide nanoparticles have become of great interest in the medical field for their potential uses in areas such as biomagnetic imaging and hypothermia cancer treatment. Traditionally, particles for these applications are produced through batch-based methodologies. Herein, we demonstrate an alternative continuous flow production method for the synthesis of Fe304 iron oxide nanoparticles. Advantages of continuous flow over the batch method include consistent formation of uniformly spherical particles, thorough mixing of reactants, and capacity for high-volume particle production. In this study, a continu- ous flow reaction mechanism was proposed in which stoichiometric control of reactants had the potential to control final particle size. The project was conducted under the supposition that the iron oleatelligand ratio in the precursor was the greatest size control factor, with a higher ratio resulting in smaller parti- cles. The resulting particles produced by this continuous method were characterized by high-resolution transmission electron microscopy, X-ray diffraction, and magnetometry.

关键词： Continuous flow Iron oxide MagnetiteSynthesis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Quantum transport in topological insulator hybrid structures-A combination of topological insulator and superconductor

引用

Science China(physics,Mechanics & astronomy) 2012年第12期55卷 2226-2236页

作者： OU YongXi SINGH Meenakshi WANG Jian International center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China The center for nanoscale Science and department of physics The Pennsylvania State UniversityUniversity ParkPennsylvania 16802-6300USA

In this paper,a brief review of the history of topological insulators is *** that,electronic transport experiments in topological insulator-superconductor hybrid structures,including experimental methods,physical properties and seemingly contradictory observations are ***,some new topological insulator hybrid structures are proposed.

关键词： topological insulator transport property superconductor hybrid structure surface state

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Angular dependence of nanoparticle generation in the matrix assembly cluster source

引用

Nano Research 2019年第12期12卷 3069-3074页

作者： Maria Chiara Spadaro Junlei Zhao William D.Terry Jian Liu Feng Yin Flyura Djurabekova Richard E.Palmer College of Engineering Swansea UniversityBay CampusFabian WaySwansea SAI 8ENUK department of physics and Helsinki Institute of physics University of HelsinkiP.O.Box43f FIN-00014HelsinkiFinland nanoscale physics Research Laboratory School of Physics and AstronomyUniversity of BirminghamBirmingham B152TTUK National center for Electron Microscopy in Beijing Key Laboratory cf Advanced Materials(MOE)The State Key Laboratory of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China School of physics and Information Technology Shaanxi Normal UniversityXian 710062China Catalan Institute of Nanoscience and Nanotechnology(ICN2) CSIC and BISTCampus UABBellaterra08193 BarcelonaCataloniaSpain

The matrix assembly cluster source(MACS)represents a bridge between conventional instruments for cluster beam deposition(CBD)and thelevel of industrial *** method is based on Ar^+ion sputtering of a pre-condensed Ar-M matrix(where M,is typically a metal such asAg).Each Ar^+ion produces a collision cascade and thus the formation of metal clusters is in the matrix,which are then sputtered *** wepresent an experimental and computational investigation of the cluster emission process,specifically its dependence on the Ar^+ion angle of in cidence and the cluster emission *** find the in cide nee angle strongly in flue nces the emerging cluster flux,which is assigned to thespatial location of the deposited primary ion energy relative to the cluster into the *** also found an approximately constant anglebetween the incident ion beam and the peak in the emitted cluster distribution,with value between 99°and 109°.

关键词： cluster beam deposition scale-up nano particles silver ligand-free green synthesis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

experimental Realization of an Extreme-Parameter Omnidirectional Cloak

引用

Research 2019年第1期2019卷 678-685页

作者： Bin Zheng Yihao Yang Zheping Shao Qinghui Yan Nian-Hai Shen Lian Shen Huaping Wang Erping Li Costas MSoukoulis Hongsheng Chen Key Lab.of Advanced Micro/Nano Electronic Devices&smart Systems of Zhejiang College of Information Science and Electronic EngineeringZhejiang UniversityHangzhou 310027China state Key Laboratory of Modern Optical Instrumentation and Te Electromagnetics Academy at Zhejiang University Zhejiang UniversityHangzhou 310027China department of physics and astronomy and Ames Laboratory-U.S.DOE Iowa state University AmesIA 50011USA Institute of Marine Electronics Engineering Zhejiang UniversityHangzhou 310058China Institute of Electronic Structure and Laser FORTH71110 HeraklionCreteGreece

An ideal transformation-based omnidirectional cloak always relies on metamaterials with extreme parameters,which were previously thought to be too difcult to *** such a reason,in previous experimental proposals of invisibility cloaks,the extreme parameters requirements are usually abandoned,leading to inherent ***,we report on the frst experimental demonstration of an omnidirectional cloak that satisfes the extreme parameters requirement,which can hide objects in a homogenous *** of using resonant metamaterials that usually involve unavoidable absorptive loss,the extreme parameters are achieved using a nonresonant metamaterial comprising arrays of subwavelength metallic channels manufactured with 3D metal printing technology.A high level transmission of electromagnetic wave propagating through the present omnidirectional cloak,as well as signifcant reduction of scattering feld,is demonstrated both numerically and *** work may also inspire experimental realizations of the other full-parameter omnidirectional optical devices such as concentrator,rotators,and optical illusion apparatuses.

关键词： directional extreme realization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Piezo-/ferroelectric phenomena in biomaterials: A brief review of recent progress and perspectives

引用

Science China(physics,Mechanics & astronomy) 2020年第7期63卷 29-46页

作者： Yao Sun KaiYang Zeng Tao Li department of Mechanical Engineering National University of SingaporeSingapore 546080Singapore center for Spintronics and Quantum Systems State Key Laboratory for Mechanical Behavior of MaterialsSchool of Materials Science and EngineeringXi'an Jiaotong UniversityXi'an 710049China

There have been overwhelming observations of piezo-/ferroelectric phenomena in many biological tissues and macromolecules,boosting the development of bio-based smart devices and the applications using electromechanical coupling phenomena in biological *** electromechanical coupling is believed to be responsible for various biophysical behaviors and remarkable biomaterial *** the abundant phenomenal observations,the fundamental understanding of the piezo-/ferroelectric effect in biomaterials/systems and the rational design of biobased macroscopic materials with desired piezoelectric responses are still *** this review,we firstly present remarkable historical events on the development of piezo-/ferroelectricity in biomaterials,followed by a brief overview of the fundamental physics of piezo-/*** developments of biopiezo-/bioferroelectricity in protein-based biomaterials and their implications are highlighted *** experimental studies,to identify the intrinsic piezo-/ferroelectric properties from other effects or artifacts is usually *** issue is also addressed and discussed in detail,especially using piezoelectric force microscopy(PFM)and spectroscopy techniques to investigate the local piezo-/ferroelectric phenomena in nanostructured materials are highlighted emphatically.

关键词： biomaterials electromechanical coupling piezoelectric ferroelectric piezoresponse force microscopy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

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：