Isolated scan unit and scanning tunneling microscope for stable imaging in ultra-high magnetic fields
In this study, we present an isolated scan unit featuring non-magnetic design and ultra-high stability, as well as bidirectional movement capability. Different types of piezoelectric motors can be incorporated into the scan unit to create a highly stable STM. The standalone structure of scan unit ensures a stable atomic imaging process by decreasing noise generated by motor. The non-magnetic design makes the scan unit work stable in high magnetic field conditions. Moreover, we have successfully constructed a novel STM based on the isolated scan unit, in which two inertial piezoelectric motors act as the coarse approach act...
Source: Ultramicroscopy - March 28, 2024 Category: Laboratory Medicine Authors: Jihao Wang Zihao Li Kesen Zhao Shuai Dong Dan Wu Wenjie Meng Jing Zhang Yubin Hou Yalin Lu Qingyou Lu Source Type: research
Isolated scan unit and scanning tunneling microscope for stable imaging in ultra-high magnetic fields
In this study, we present an isolated scan unit featuring non-magnetic design and ultra-high stability, as well as bidirectional movement capability. Different types of piezoelectric motors can be incorporated into the scan unit to create a highly stable STM. The standalone structure of scan unit ensures a stable atomic imaging process by decreasing noise generated by motor. The non-magnetic design makes the scan unit work stable in high magnetic field conditions. Moreover, we have successfully constructed a novel STM based on the isolated scan unit, in which two inertial piezoelectric motors act as the coarse approach act...
Source: Ultramicroscopy - March 28, 2024 Category: Laboratory Medicine Authors: Jihao Wang Zihao Li Kesen Zhao Shuai Dong Dan Wu Wenjie Meng Jing Zhang Yubin Hou Yalin Lu Qingyou Lu Source Type: research
Nano1D: An accurate computer vision software for analysis and segmentation of low-dimensional nanostructures
Ultramicroscopy. 2024 Mar 10;261:113949. doi: 10.1016/j.ultramic.2024.113949. Online ahead of print.ABSTRACTNanoparticles in microscopy images are usually analyzed qualitatively or manually and there is a need for autonomous quantitative analysis of these objects. In this paper, we present a physics-based computational model for accurate segmentation and geometrical analysis of one-dimensional deformable overlapping objects from microscopy images. This model, named Nano1D, has four steps of preprocessing, segmentation, separating overlapped objects and geometrical measurements. The model is tested on SEM images of Ag and A...
Source: Ultramicroscopy - March 19, 2024 Category: Laboratory Medicine Authors: Ehsan Moradpur-Tari Sergei Vlassov Sven Oras Mart Ernits Elyad Damerchi Boris Polyakov Andreas Kyritsakis Veronika Zadin Source Type: research
Nano1D: An accurate computer vision software for analysis and segmentation of low-dimensional nanostructures
Ultramicroscopy. 2024 Mar 10;261:113949. doi: 10.1016/j.ultramic.2024.113949. Online ahead of print.ABSTRACTNanoparticles in microscopy images are usually analyzed qualitatively or manually and there is a need for autonomous quantitative analysis of these objects. In this paper, we present a physics-based computational model for accurate segmentation and geometrical analysis of one-dimensional deformable overlapping objects from microscopy images. This model, named Nano1D, has four steps of preprocessing, segmentation, separating overlapped objects and geometrical measurements. The model is tested on SEM images of Ag and A...
Source: Ultramicroscopy - March 19, 2024 Category: Laboratory Medicine Authors: Ehsan Moradpur-Tari Sergei Vlassov Sven Oras Mart Ernits Elyad Damerchi Boris Polyakov Andreas Kyritsakis Veronika Zadin Source Type: research
Nano1D: An accurate computer vision software for analysis and segmentation of low-dimensional nanostructures
Ultramicroscopy. 2024 Mar 10;261:113949. doi: 10.1016/j.ultramic.2024.113949. Online ahead of print.ABSTRACTNanoparticles in microscopy images are usually analyzed qualitatively or manually and there is a need for autonomous quantitative analysis of these objects. In this paper, we present a physics-based computational model for accurate segmentation and geometrical analysis of one-dimensional deformable overlapping objects from microscopy images. This model, named Nano1D, has four steps of preprocessing, segmentation, separating overlapped objects and geometrical measurements. The model is tested on SEM images of Ag and A...
Source: Ultramicroscopy - March 19, 2024 Category: Laboratory Medicine Authors: Ehsan Moradpur-Tari Sergei Vlassov Sven Oras Mart Ernits Elyad Damerchi Boris Polyakov Andreas Kyritsakis Veronika Zadin Source Type: research
Nano1D: An accurate computer vision software for analysis and segmentation of low-dimensional nanostructures
Ultramicroscopy. 2024 Mar 10;261:113949. doi: 10.1016/j.ultramic.2024.113949. Online ahead of print.ABSTRACTNanoparticles in microscopy images are usually analyzed qualitatively or manually and there is a need for autonomous quantitative analysis of these objects. In this paper, we present a physics-based computational model for accurate segmentation and geometrical analysis of one-dimensional deformable overlapping objects from microscopy images. This model, named Nano1D, has four steps of preprocessing, segmentation, separating overlapped objects and geometrical measurements. The model is tested on SEM images of Ag and A...
Source: Ultramicroscopy - March 19, 2024 Category: Laboratory Medicine Authors: Ehsan Moradpur-Tari Sergei Vlassov Sven Oras Mart Ernits Elyad Damerchi Boris Polyakov Andreas Kyritsakis Veronika Zadin Source Type: research
Nano1D: An accurate computer vision software for analysis and segmentation of low-dimensional nanostructures
Ultramicroscopy. 2024 Mar 10;261:113949. doi: 10.1016/j.ultramic.2024.113949. Online ahead of print.ABSTRACTNanoparticles in microscopy images are usually analyzed qualitatively or manually and there is a need for autonomous quantitative analysis of these objects. In this paper, we present a physics-based computational model for accurate segmentation and geometrical analysis of one-dimensional deformable overlapping objects from microscopy images. This model, named Nano1D, has four steps of preprocessing, segmentation, separating overlapped objects and geometrical measurements. The model is tested on SEM images of Ag and A...
Source: Ultramicroscopy - March 19, 2024 Category: Laboratory Medicine Authors: Ehsan Moradpur-Tari Sergei Vlassov Sven Oras Mart Ernits Elyad Damerchi Boris Polyakov Andreas Kyritsakis Veronika Zadin Source Type: research
Nano1D: An accurate computer vision software for analysis and segmentation of low-dimensional nanostructures
Ultramicroscopy. 2024 Mar 10;261:113949. doi: 10.1016/j.ultramic.2024.113949. Online ahead of print.ABSTRACTNanoparticles in microscopy images are usually analyzed qualitatively or manually and there is a need for autonomous quantitative analysis of these objects. In this paper, we present a physics-based computational model for accurate segmentation and geometrical analysis of one-dimensional deformable overlapping objects from microscopy images. This model, named Nano1D, has four steps of preprocessing, segmentation, separating overlapped objects and geometrical measurements. The model is tested on SEM images of Ag and A...
Source: Ultramicroscopy - March 19, 2024 Category: Laboratory Medicine Authors: Ehsan Moradpur-Tari Sergei Vlassov Sven Oras Mart Ernits Elyad Damerchi Boris Polyakov Andreas Kyritsakis Veronika Zadin Source Type: research
Nano1D: An accurate computer vision software for analysis and segmentation of low-dimensional nanostructures
Ultramicroscopy. 2024 Mar 10;261:113949. doi: 10.1016/j.ultramic.2024.113949. Online ahead of print.ABSTRACTNanoparticles in microscopy images are usually analyzed qualitatively or manually and there is a need for autonomous quantitative analysis of these objects. In this paper, we present a physics-based computational model for accurate segmentation and geometrical analysis of one-dimensional deformable overlapping objects from microscopy images. This model, named Nano1D, has four steps of preprocessing, segmentation, separating overlapped objects and geometrical measurements. The model is tested on SEM images of Ag and A...
Source: Ultramicroscopy - March 19, 2024 Category: Laboratory Medicine Authors: Ehsan Moradpur-Tari Sergei Vlassov Sven Oras Mart Ernits Elyad Damerchi Boris Polyakov Andreas Kyritsakis Veronika Zadin Source Type: research
Nano1D: An accurate computer vision software for analysis and segmentation of low-dimensional nanostructures
Ultramicroscopy. 2024 Mar 10;261:113949. doi: 10.1016/j.ultramic.2024.113949. Online ahead of print.ABSTRACTNanoparticles in microscopy images are usually analyzed qualitatively or manually and there is a need for autonomous quantitative analysis of these objects. In this paper, we present a physics-based computational model for accurate segmentation and geometrical analysis of one-dimensional deformable overlapping objects from microscopy images. This model, named Nano1D, has four steps of preprocessing, segmentation, separating overlapped objects and geometrical measurements. The model is tested on SEM images of Ag and A...
Source: Ultramicroscopy - March 19, 2024 Category: Laboratory Medicine Authors: Ehsan Moradpur-Tari Sergei Vlassov Sven Oras Mart Ernits Elyad Damerchi Boris Polyakov Andreas Kyritsakis Veronika Zadin Source Type: research
An in-situ magnetising holder achieving 1.5 T in-plane field in 200 kV transmission electron microscope
In this study, the reason for the low field was analysed, and the field strength was significantly elevated by reducing the field application area of the field generator. From finite element method calculations and experimental measurements, a 1.5 T in-plane field was achieved by our new holder in a 200-kV TEM, and images with good quality could still be obtained. Using the newly developed holder, the magnetisation process of hot-pressed NdFeB magnets was observed. The in-situ magnetising holder can be used in research on a wide variety of magnetic materials.PMID:38493522 | DOI:10.1016/j.ultramic.2024.113950 (Source: Ultramicroscopy)
Source: Ultramicroscopy - March 17, 2024 Category: Laboratory Medicine Authors: Tian Bai Xin Sun Jiazhuan Qin Fei Li Qiang Gao Weixing Xia Renjie Chen Aru Yan Wei Li Source Type: research
An in-situ magnetising holder achieving 1.5 T in-plane field in 200 kV transmission electron microscope
In this study, the reason for the low field was analysed, and the field strength was significantly elevated by reducing the field application area of the field generator. From finite element method calculations and experimental measurements, a 1.5 T in-plane field was achieved by our new holder in a 200-kV TEM, and images with good quality could still be obtained. Using the newly developed holder, the magnetisation process of hot-pressed NdFeB magnets was observed. The in-situ magnetising holder can be used in research on a wide variety of magnetic materials.PMID:38493522 | DOI:10.1016/j.ultramic.2024.113950 (Source: Ultramicroscopy)
Source: Ultramicroscopy - March 17, 2024 Category: Laboratory Medicine Authors: Tian Bai Xin Sun Jiazhuan Qin Fei Li Qiang Gao Weixing Xia Renjie Chen Aru Yan Wei Li Source Type: research
Measuring scattering distributions in scanning helium microscopy
Ultramicroscopy. 2024 Mar 7;260:113951. doi: 10.1016/j.ultramic.2024.113951. Online ahead of print.ABSTRACTA scanning helium microscope typically utilises a thermal energy helium atom beam, with an energy and wavelength (¡100meV, ∼0.05 nm) particularly sensitive to surface structure. An angular detector stage for a scanning helium microscope is presented that facilitates the in-situ measurement of scattering distributions from a sample. We begin by demonstrating typical elastic and inelastic scattering from ordered surfaces. We then go on to show the role of topography in diffuse scattering from disordered surfaces, obs...
Source: Ultramicroscopy - March 12, 2024 Category: Laboratory Medicine Authors: C J Hatchwell M Bergin B Carr M G Barr A Fahy P C Dastoor Source Type: research
Measuring scattering distributions in scanning helium microscopy
Ultramicroscopy. 2024 Mar 7;260:113951. doi: 10.1016/j.ultramic.2024.113951. Online ahead of print.ABSTRACTA scanning helium microscope typically utilises a thermal energy helium atom beam, with an energy and wavelength (¡100meV, ∼0.05 nm) particularly sensitive to surface structure. An angular detector stage for a scanning helium microscope is presented that facilitates the in-situ measurement of scattering distributions from a sample. We begin by demonstrating typical elastic and inelastic scattering from ordered surfaces. We then go on to show the role of topography in diffuse scattering from disordered surfaces, obs...
Source: Ultramicroscopy - March 12, 2024 Category: Laboratory Medicine Authors: C J Hatchwell M Bergin B Carr M G Barr A Fahy P C Dastoor Source Type: research
Measuring scattering distributions in scanning helium microscopy
Ultramicroscopy. 2024 Mar 7;260:113951. doi: 10.1016/j.ultramic.2024.113951. Online ahead of print.ABSTRACTA scanning helium microscope typically utilises a thermal energy helium atom beam, with an energy and wavelength (¡100meV, ∼0.05 nm) particularly sensitive to surface structure. An angular detector stage for a scanning helium microscope is presented that facilitates the in-situ measurement of scattering distributions from a sample. We begin by demonstrating typical elastic and inelastic scattering from ordered surfaces. We then go on to show the role of topography in diffuse scattering from disordered surfaces, obs...
Source: Ultramicroscopy - March 12, 2024 Category: Laboratory Medicine Authors: C J Hatchwell M Bergin B Carr M G Barr A Fahy P C Dastoor Source Type: research
