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Atomic Force Microscopy

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...

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Updated: Jan 8, 2026

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

紧的压力驱动可旋转磁力显微镜在一个无冷磁体的磁体中.

Yue Gao¹, Wenjie Meng^2,3, Yuchen Zhang¹

¹University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.

The Review of scientific instruments

|December 11, 2025

概括

我们为高磁场磁体开发了一种紧的旋转磁力显微镜,使得在低温下对微米级材料的磁性异构性进行了详细研究. 这项创新克服了先进材料研究的振动挑战.

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High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

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相关实验视频

Last Updated: Jan 8, 2026

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

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Published on: May 12, 2023

Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology

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Published on: July 5, 2022

科学领域:

材料科学材料科学材料科学
凝聚物质物理学凝聚物质物理学
纳米技术纳米技术

背景情况:

在高磁场磁体中扫描探头显微镜 (SPM) 的现场旋转对于磁性异构性研究至关重要.
现有的方法面临重大技术挑战,限制了微米级的调查.

研究的目的:

为了展示一个紧的,压电驱动的可旋转磁力显微镜 (MFM),用于在无冷超导磁体内工作.
为了使微米级的磁性异构性研究在可变的角度和温度.

主要方法:

实现了一种新的嵌套同轴压电扫描管 (PST) 设计,以抵御振动和扩大扫描范围.
在低至2K的温度下,MFM在50毫米孔,12T,无冷超导磁铁中运行.
场控制磁域演变在2D范德瓦尔斯磁铁Fe3GaTe2.2中进行成像.

主要成果:

显微镜实现了稳定的运行和成像在12T场和下降到2K.
嵌套的PST设计有效地减少了振动干扰,并将扫描范围增加了1.74倍.
在Fe3GaTe2中磁域演变显示出强烈的外平面异构性和和场的特征性1/cos θ依赖性.

结论:

开发的耐振动,旋转的MFM适合在高场,无冷环境中进行微米级磁性异质性研究.
设计原则可以扩展到其他SPM平台,用于先进的材料表征.
该系统有助于深入了解新型二维材料中的磁性特性.