Vector field and pulsed light assisted variable temperature scanning probe microscope for time and space resolved nano-characterisations

矢量场和脉冲光辅助变温扫描探针显微镜，用于时间和空间分辨的纳米表征

基本信息

批准号：
EP/M022706/1
负责人：
Marin Alexe
金额：
$ 23.93万
依托单位：
University of Warwick
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2015
资助国家：
英国
起止时间：
2015 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FM022706%2F1
关键词：
Vector field pulsed light assisted

项目摘要

Our vision is to offer the community an equipment which would allow unique experiments. Scanning probe microscopy (SPM), including both tunnelling and force microscopy, has brought a new class of tools enabling characterisation with lateral resolution at atomic scale. SPM has been a major tool without which the nowadays nanoscience and nanotechnology would have been not possible. We aim to develop an equipment based on the AFM concept which would allow complex characterisation of functional materials. It will offer not only the lateral resolution but also time resolution offered by a short laser pulses, energy resolution by variable temperature and extreme magnetic and electric fields. This SPM, which can be named 5D microscope (3D in real space+1D in time+1D in energy), will open new possibilities to the existing research areas and most probably new research areas. Indubitably, it will have impact to the large field of nanoscience, nanotechnology, and functional materials. Such complex tool does not exist yet, but technology that would make its construction feasible do exist.Besides the "normal" AFM measurement modes under extreme conditions, novel working modes based on particularities of the system, which offers time and space resolved measurements, will be developed. One example of such new developments is the photo-induced transient spectroscopy scanning probe microscopy (PITS-SPM), which can determine recombination centres in photoelectric and photovoltaic materials and devices with spatial resolution approaching the tip-sample contact radius (15-30 nm diameter). The system is designed to be flexible in order to extend the capabilities and meet the specific requirements of potential users. To list few operating modes that might be further developed: photoluminescence spectroscopy, scanning Kerr-effect mode, micro-Raman, vortex imaging, scanning impedance or microwave microscopy, etc. The system would be a genuine open system and shared facility. Top UK and worldwide projects selected solely on the scientific quality will be run on the equipment. The work will be in close cooperation with the managing team which will propose technical and scientific solutions to the users according to the actual experimental goals.The project objectives are:a) Provision of a shared UK resource for variable/low temperature field assisted scanning probe microscopy with performance better than the current state of the art.b) Development of novel time and space resolved measurement techniques for characterization of semiconductor, magnetic, ferroelectric and other functional materials.c) Unprecedented correlated functional and structural studies enabling understanding the origin of effects such as recombination in photovoltaic (perovskite) materials or conduction in topological structures such as surfaces, domain walls, or skyrmions.

我们的愿景是为社区提供一个允许独特实验的设备。扫描探针显微镜（SPM），包括隧道和力显微镜，带来了一类新的工具，可在原子尺度下进行横向分辨率。 SPM一直是当今纳米科学和纳米技术的主要工具。我们旨在开发基于AFM概念的设备，该设备将允许功能材料的复杂表征。它不仅将提供横向分辨率，还提供短激光脉冲提供的时间分辨率，可变温度和极端磁场和电场的能量分辨率。该SPM可以被命名为5D显微镜（在时间+1D中的3D中，能量的3D）将为现有的研究领域和最有可能的新研究领域打开新的可能性。毫无疑问，它将对纳米科学，纳米技术和功能材料的大型领域产生影响。这种复杂的工具尚不存在，而是将其构造可行的技术确实存在。Besides在极端条件下的“正常” AFM测量模式，基于系统特殊性的新型工作模式，该模式将提供时间和空间解决的测量，将被开发。此类新事态发展的一个例子是光诱导的瞬态光谱扫描探针显微镜（PITS-SPM），它可以确定光电和光伏材料中的重组中心，并以空间分辨率接近尖端样品接触半径（15-30 nm直径））。该系统旨在灵活，以扩展功能并满足潜在用户的特定要求。为了列出可能进一步开发的几种操作模式：光致发光光谱，扫描KERR效应模式，微拉曼，涡旋成像，扫描阻抗或微波显微镜等。该系统将是真正的开放系统和共享设施。仅根据科学质量而选择的顶级英国和全球项目将在设备上运行。这项工作将与管理团队密切合作，该团队将根据实际的实验目标向用户提出技术和科学解决方案。项目目标是：a）为可变/低温场辅助扫描探测提供共享的英国资源具有比目前的艺术状态更好的表演的显微镜。例如光伏（钙钛矿）材料中的重组或拓扑结构中的传导，例如表面，域壁或天空。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Flexible memristors based on single-crystalline ferroelectric tunnel junctions.

DOI：
10.1021/acsami.9b04738
发表时间：
2019-06
期刊：
ACS applied materials & interfaces
影响因子：
9.5
作者：
Zheng‐Dong Luo;J. J. Peters-J.;A. Sánchez;M. Alexe
通讯作者：
Zheng‐Dong Luo;J. J. Peters-J.;A. Sánchez;M. Alexe

Bi-ferroic memristive properties of multiferroic tunnel junctions

DOI：
10.1063/1.5023877
发表时间：
2018-03
期刊：
Applied Physics Letters
影响因子：
4
作者：
Zheng‐Dong Luo;G. Apachitei;Ming-Min Yang;J. J. Peters-J.;A. Sánchez;M. Alexe
通讯作者：
Zheng‐Dong Luo;G. Apachitei;Ming-Min Yang;J. J. Peters-J.;A. Sánchez;M. Alexe

Photoelectric processes in ferroelectric/multiferroic materials

铁电/多铁材料的光电过程