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
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
The characterisation of dental enamel using transmission Kikuchi diffraction in the scanning electron microscope combined with dynamic template matching
Ultramicroscopy. 2024 Feb 24;260:113940. doi: 10.1016/j.ultramic.2024.113940. Online ahead of print.ABSTRACTThe remarkable physical properties of dental enamel can be largely attributed to the structure of the hydroxyapatite (HAp) crystallites on the sub-micrometre scale. Characterising the HAp microstructure is challenging, due to the nanoscale of individual crystallites and practical challenges associated with HAp examination using electron microscopy techniques. Conventional methods for enamel characterisation include imaging using transmission electron microscopy (TEM) or specialised beamline techniques, such as polari...
Source: Ultramicroscopy - February 29, 2024 Category: Laboratory Medicine Authors: Patrick Trimby Mohammed Al-Mosawi Maisoon Al-Jawad Stuart Micklethwaite Zabeada Aslam Aimo Winkelmann Sandra Piazolo Source Type: research
The characterisation of dental enamel using transmission Kikuchi diffraction in the scanning electron microscope combined with dynamic template matching
Ultramicroscopy. 2024 Feb 24;260:113940. doi: 10.1016/j.ultramic.2024.113940. Online ahead of print.ABSTRACTThe remarkable physical properties of dental enamel can be largely attributed to the structure of the hydroxyapatite (HAp) crystallites on the sub-micrometre scale. Characterising the HAp microstructure is challenging, due to the nanoscale of individual crystallites and practical challenges associated with HAp examination using electron microscopy techniques. Conventional methods for enamel characterisation include imaging using transmission electron microscopy (TEM) or specialised beamline techniques, such as polari...
Source: Ultramicroscopy - February 29, 2024 Category: Laboratory Medicine Authors: Patrick Trimby Mohammed Al-Mosawi Maisoon Al-Jawad Stuart Micklethwaite Zabeada Aslam Aimo Winkelmann Sandra Piazolo Source Type: research
The characterisation of dental enamel using transmission Kikuchi diffraction in the scanning electron microscope combined with dynamic template matching
Ultramicroscopy. 2024 Feb 24;260:113940. doi: 10.1016/j.ultramic.2024.113940. Online ahead of print.ABSTRACTThe remarkable physical properties of dental enamel can be largely attributed to the structure of the hydroxyapatite (HAp) crystallites on the sub-micrometre scale. Characterising the HAp microstructure is challenging, due to the nanoscale of individual crystallites and practical challenges associated with HAp examination using electron microscopy techniques. Conventional methods for enamel characterisation include imaging using transmission electron microscopy (TEM) or specialised beamline techniques, such as polari...
Source: Ultramicroscopy - February 29, 2024 Category: Laboratory Medicine Authors: Patrick Trimby Mohammed Al-Mosawi Maisoon Al-Jawad Stuart Micklethwaite Zabeada Aslam Aimo Winkelmann Sandra Piazolo Source Type: research
The characterisation of dental enamel using transmission Kikuchi diffraction in the scanning electron microscope combined with dynamic template matching
Ultramicroscopy. 2024 Feb 24;260:113940. doi: 10.1016/j.ultramic.2024.113940. Online ahead of print.ABSTRACTThe remarkable physical properties of dental enamel can be largely attributed to the structure of the hydroxyapatite (HAp) crystallites on the sub-micrometre scale. Characterising the HAp microstructure is challenging, due to the nanoscale of individual crystallites and practical challenges associated with HAp examination using electron microscopy techniques. Conventional methods for enamel characterisation include imaging using transmission electron microscopy (TEM) or specialised beamline techniques, such as polari...
Source: Ultramicroscopy - February 29, 2024 Category: Laboratory Medicine Authors: Patrick Trimby Mohammed Al-Mosawi Maisoon Al-Jawad Stuart Micklethwaite Zabeada Aslam Aimo Winkelmann Sandra Piazolo Source Type: research
The characterisation of dental enamel using transmission Kikuchi diffraction in the scanning electron microscope combined with dynamic template matching
Ultramicroscopy. 2024 Feb 24;260:113940. doi: 10.1016/j.ultramic.2024.113940. Online ahead of print.ABSTRACTThe remarkable physical properties of dental enamel can be largely attributed to the structure of the hydroxyapatite (HAp) crystallites on the sub-micrometre scale. Characterising the HAp microstructure is challenging, due to the nanoscale of individual crystallites and practical challenges associated with HAp examination using electron microscopy techniques. Conventional methods for enamel characterisation include imaging using transmission electron microscopy (TEM) or specialised beamline techniques, such as polari...
Source: Ultramicroscopy - February 29, 2024 Category: Laboratory Medicine Authors: Patrick Trimby Mohammed Al-Mosawi Maisoon Al-Jawad Stuart Micklethwaite Zabeada Aslam Aimo Winkelmann Sandra Piazolo Source Type: research
The characterisation of dental enamel using transmission Kikuchi diffraction in the scanning electron microscope combined with dynamic template matching
Ultramicroscopy. 2024 Feb 24;260:113940. doi: 10.1016/j.ultramic.2024.113940. Online ahead of print.ABSTRACTThe remarkable physical properties of dental enamel can be largely attributed to the structure of the hydroxyapatite (HAp) crystallites on the sub-micrometre scale. Characterising the HAp microstructure is challenging, due to the nanoscale of individual crystallites and practical challenges associated with HAp examination using electron microscopy techniques. Conventional methods for enamel characterisation include imaging using transmission electron microscopy (TEM) or specialised beamline techniques, such as polari...
Source: Ultramicroscopy - February 29, 2024 Category: Laboratory Medicine Authors: Patrick Trimby Mohammed Al-Mosawi Maisoon Al-Jawad Stuart Micklethwaite Zabeada Aslam Aimo Winkelmann Sandra Piazolo Source Type: research
The characterisation of dental enamel using transmission Kikuchi diffraction in the scanning electron microscope combined with dynamic template matching
Ultramicroscopy. 2024 Feb 24;260:113940. doi: 10.1016/j.ultramic.2024.113940. Online ahead of print.ABSTRACTThe remarkable physical properties of dental enamel can be largely attributed to the structure of the hydroxyapatite (HAp) crystallites on the sub-micrometre scale. Characterising the HAp microstructure is challenging, due to the nanoscale of individual crystallites and practical challenges associated with HAp examination using electron microscopy techniques. Conventional methods for enamel characterisation include imaging using transmission electron microscopy (TEM) or specialised beamline techniques, such as polari...
Source: Ultramicroscopy - February 29, 2024 Category: Laboratory Medicine Authors: Patrick Trimby Mohammed Al-Mosawi Maisoon Al-Jawad Stuart Micklethwaite Zabeada Aslam Aimo Winkelmann Sandra Piazolo Source Type: research
The characterisation of dental enamel using transmission Kikuchi diffraction in the scanning electron microscope combined with dynamic template matching
Ultramicroscopy. 2024 Feb 24;260:113940. doi: 10.1016/j.ultramic.2024.113940. Online ahead of print.ABSTRACTThe remarkable physical properties of dental enamel can be largely attributed to the structure of the hydroxyapatite (HAp) crystallites on the sub-micrometre scale. Characterising the HAp microstructure is challenging, due to the nanoscale of individual crystallites and practical challenges associated with HAp examination using electron microscopy techniques. Conventional methods for enamel characterisation include imaging using transmission electron microscopy (TEM) or specialised beamline techniques, such as polari...
Source: Ultramicroscopy - February 29, 2024 Category: Laboratory Medicine Authors: Patrick Trimby Mohammed Al-Mosawi Maisoon Al-Jawad Stuart Micklethwaite Zabeada Aslam Aimo Winkelmann Sandra Piazolo Source Type: research
The characterisation of dental enamel using transmission Kikuchi diffraction in the scanning electron microscope combined with dynamic template matching
Ultramicroscopy. 2024 Feb 24;260:113940. doi: 10.1016/j.ultramic.2024.113940. Online ahead of print.ABSTRACTThe remarkable physical properties of dental enamel can be largely attributed to the structure of the hydroxyapatite (HAp) crystallites on the sub-micrometre scale. Characterising the HAp microstructure is challenging, due to the nanoscale of individual crystallites and practical challenges associated with HAp examination using electron microscopy techniques. Conventional methods for enamel characterisation include imaging using transmission electron microscopy (TEM) or specialised beamline techniques, such as polari...
Source: Ultramicroscopy - February 29, 2024 Category: Laboratory Medicine Authors: Patrick Trimby Mohammed Al-Mosawi Maisoon Al-Jawad Stuart Micklethwaite Zabeada Aslam Aimo Winkelmann Sandra Piazolo Source Type: research
Weld-free mounting of lamellae for electrical biasing operando TEM
This article delineates an improved FIB-based sample preparation methodology that results in good electrical connectivity and operational functionality across various MIM devices. To exemplify the efficacy of the sample preparation technique, we demonstrate preparation of a clean cross section extracted from a Au/Pt/BaSrTiO3/SrMoO3 tunable capacitor (varactor). The FIB-prepared TEM lamella mounted on a MEMS-based chip showed current levels in the tens of picoamperes range at 0.1 V. Furthermore, the electric response and current density of the TEM lamella device closely align with macro-scale devices. These samples exhibit ...
Source: Ultramicroscopy - February 24, 2024 Category: Laboratory Medicine Authors: Oscar Recalde-Benitez Yevheniy Pivak Tianshu Jiang Robert Winkler Alexander Zintler Esmaeil Adabifiroozjaei Philipp Komissinskiy Lambert Alff William A Hubbard H Hugo Perez-Garza Leopoldo Molina-Luna Source Type: research
