Modeling scanning near-field optical photons scattered from an atomic force microscope for quantum metrology
Ultramicroscopy. 2023 Oct 6;255:113863. doi: 10.1016/j.ultramic.2023.113863. Online ahead of print.ABSTRACTScattering scanning near-field optical microscopy (s-SNOM) is a promising technique for overcoming Abbe diffraction limit and substantially enhancing the spatial resolution in spectroscopic imaging. The s-SNOM works by exposing an atomic force microscope (AFM) tip to an optical electromagnetic (EM) field, while the tip is so close to a dielectric sample that the incident beam lies within the near-field regime and displays nonlinear behavior. We suggest replacing the incident EM field by photons generated by a single p...
Source: Ultramicroscopy - October 14, 2023 Category: Laboratory Medicine Authors: Soheil Khajavi Zahra Shaterzadeh-Yazdi Ali Eghrari Mohammad Neshat Source Type: research
Mean inner potential of elemental crystals from density-functional theory calculations: Efficient computation and trends
Ultramicroscopy. 2023 Oct 4;255:113862. doi: 10.1016/j.ultramic.2023.113862. Online ahead of print.ABSTRACTThe mean inner potential (V0) of crystals plays an important role in electron microscopy. In a few cases, it has been measured experimentally, using mostly electron holography; however, it is not uncommon to find reports that disagree by a few volts regarding the mean inner potential of the same material. Different levels of theory have also been used to estimate its value, often by building the crystal as a superposition of isolated atoms or ions-an independent-atom approximation that does not take bonding into accou...
Source: Ultramicroscopy - October 12, 2023 Category: Laboratory Medicine Authors: Avi Auslender Nivedita Pandey Amit Kohn Oswaldo Di éguez Source Type: research
Mean inner potential of elemental crystals from density-functional theory calculations: Efficient computation and trends
Ultramicroscopy. 2023 Oct 4;255:113862. doi: 10.1016/j.ultramic.2023.113862. Online ahead of print.ABSTRACTThe mean inner potential (V0) of crystals plays an important role in electron microscopy. In a few cases, it has been measured experimentally, using mostly electron holography; however, it is not uncommon to find reports that disagree by a few volts regarding the mean inner potential of the same material. Different levels of theory have also been used to estimate its value, often by building the crystal as a superposition of isolated atoms or ions-an independent-atom approximation that does not take bonding into accou...
Source: Ultramicroscopy - October 12, 2023 Category: Laboratory Medicine Authors: Avi Auslender Nivedita Pandey Amit Kohn Oswaldo Di éguez Source Type: research
Dose symmetric electron diffraction tomography (DS-EDT): Implementation of a dose-symmetric tomography scheme in 3D electron diffraction
Ultramicroscopy. 2023 Sep 16;255:113857. doi: 10.1016/j.ultramic.2023.113857. Online ahead of print.ABSTRACTBeam sensitive nanomaterials such as zeolites or metal-organic frameworks (MOF) represent a great challenge for crystallographic structure determination and refinement. The strong electron-matter interaction and the high spatial resolution achievable make electron diffraction the technique of choice for particles of sizes below a micrometer and many different 3-dimensional electron diffraction (3D ED) techniques have been developed in recent years. Nevertheless, beam sensitivity of the samples can lead to the crystal...
Source: Ultramicroscopy - October 5, 2023 Category: Laboratory Medicine Authors: Emre Y örük Holger Klein St éphanie Kodjikian Source Type: research
Spectromicroscopic study of the transformation with low energy ions of a hematite thin film into a magnetite/hematite epitaxial bilayer
We present a synchrotron-based spectromicroscopic investigation of a magnetite/hematite bilayer on Pt(111) grown in a two-step process by thermal evaporation and Low Energy Ion Bombardment (LEIB). The characterization includes the study of structural, electronic, chemical, and magnetic properties using X-ray Absorption Spectroscopy (XAS), Low Energy Electron Microscopy (LEEM), Photoemission Electron Microscopy (PEEM), or X-ray Magnetic Circular Dichroism (XMCD). The aim is to obtain microscopic information of the thin film before, during, and after the ion bombardment. Ion bombardment gradually transforms the topmost layer...
Source: Ultramicroscopy - October 5, 2023 Category: Laboratory Medicine Authors: Mauricio J Prieto Lucas de Souza Caldas Liviu C T ănase Thomas Schmidt Oscar Rodr íguez de la Fuente Source Type: research
Dose symmetric electron diffraction tomography (DS-EDT): Implementation of a dose-symmetric tomography scheme in 3D electron diffraction
Ultramicroscopy. 2023 Sep 16;255:113857. doi: 10.1016/j.ultramic.2023.113857. Online ahead of print.ABSTRACTBeam sensitive nanomaterials such as zeolites or metal-organic frameworks (MOF) represent a great challenge for crystallographic structure determination and refinement. The strong electron-matter interaction and the high spatial resolution achievable make electron diffraction the technique of choice for particles of sizes below a micrometer and many different 3-dimensional electron diffraction (3D ED) techniques have been developed in recent years. Nevertheless, beam sensitivity of the samples can lead to the crystal...
Source: Ultramicroscopy - October 5, 2023 Category: Laboratory Medicine Authors: Emre Y örük Holger Klein St éphanie Kodjikian Source Type: research
Spectromicroscopic study of the transformation with low energy ions of a hematite thin film into a magnetite/hematite epitaxial bilayer
We present a synchrotron-based spectromicroscopic investigation of a magnetite/hematite bilayer on Pt(111) grown in a two-step process by thermal evaporation and Low Energy Ion Bombardment (LEIB). The characterization includes the study of structural, electronic, chemical, and magnetic properties using X-ray Absorption Spectroscopy (XAS), Low Energy Electron Microscopy (LEEM), Photoemission Electron Microscopy (PEEM), or X-ray Magnetic Circular Dichroism (XMCD). The aim is to obtain microscopic information of the thin film before, during, and after the ion bombardment. Ion bombardment gradually transforms the topmost layer...
Source: Ultramicroscopy - October 5, 2023 Category: Laboratory Medicine Authors: Mauricio J Prieto Lucas de Souza Caldas Liviu C T ănase Thomas Schmidt Oscar Rodr íguez de la Fuente Source Type: research
Dose symmetric electron diffraction tomography (DS-EDT): Implementation of a dose-symmetric tomography scheme in 3D electron diffraction
Ultramicroscopy. 2023 Sep 16;255:113857. doi: 10.1016/j.ultramic.2023.113857. Online ahead of print.ABSTRACTBeam sensitive nanomaterials such as zeolites or metal-organic frameworks (MOF) represent a great challenge for crystallographic structure determination and refinement. The strong electron-matter interaction and the high spatial resolution achievable make electron diffraction the technique of choice for particles of sizes below a micrometer and many different 3-dimensional electron diffraction (3D ED) techniques have been developed in recent years. Nevertheless, beam sensitivity of the samples can lead to the crystal...
Source: Ultramicroscopy - October 5, 2023 Category: Laboratory Medicine Authors: Emre Y örük Holger Klein St éphanie Kodjikian Source Type: research
Spectromicroscopic study of the transformation with low energy ions of a hematite thin film into a magnetite/hematite epitaxial bilayer
We present a synchrotron-based spectromicroscopic investigation of a magnetite/hematite bilayer on Pt(111) grown in a two-step process by thermal evaporation and Low Energy Ion Bombardment (LEIB). The characterization includes the study of structural, electronic, chemical, and magnetic properties using X-ray Absorption Spectroscopy (XAS), Low Energy Electron Microscopy (LEEM), Photoemission Electron Microscopy (PEEM), or X-ray Magnetic Circular Dichroism (XMCD). The aim is to obtain microscopic information of the thin film before, during, and after the ion bombardment. Ion bombardment gradually transforms the topmost layer...
Source: Ultramicroscopy - October 5, 2023 Category: Laboratory Medicine Authors: Mauricio J Prieto Lucas de Souza Caldas Liviu C T ănase Thomas Schmidt Oscar Rodr íguez de la Fuente Source Type: research
Dose symmetric electron diffraction tomography (DS-EDT): Implementation of a dose-symmetric tomography scheme in 3D electron diffraction
Ultramicroscopy. 2023 Sep 16;255:113857. doi: 10.1016/j.ultramic.2023.113857. Online ahead of print.ABSTRACTBeam sensitive nanomaterials such as zeolites or metal-organic frameworks (MOF) represent a great challenge for crystallographic structure determination and refinement. The strong electron-matter interaction and the high spatial resolution achievable make electron diffraction the technique of choice for particles of sizes below a micrometer and many different 3-dimensional electron diffraction (3D ED) techniques have been developed in recent years. Nevertheless, beam sensitivity of the samples can lead to the crystal...
Source: Ultramicroscopy - October 5, 2023 Category: Laboratory Medicine Authors: Emre Y örük Holger Klein St éphanie Kodjikian Source Type: research
Spectromicroscopic study of the transformation with low energy ions of a hematite thin film into a magnetite/hematite epitaxial bilayer
We present a synchrotron-based spectromicroscopic investigation of a magnetite/hematite bilayer on Pt(111) grown in a two-step process by thermal evaporation and Low Energy Ion Bombardment (LEIB). The characterization includes the study of structural, electronic, chemical, and magnetic properties using X-ray Absorption Spectroscopy (XAS), Low Energy Electron Microscopy (LEEM), Photoemission Electron Microscopy (PEEM), or X-ray Magnetic Circular Dichroism (XMCD). The aim is to obtain microscopic information of the thin film before, during, and after the ion bombardment. Ion bombardment gradually transforms the topmost layer...
Source: Ultramicroscopy - October 5, 2023 Category: Laboratory Medicine Authors: Mauricio J Prieto Lucas de Souza Caldas Liviu C T ănase Thomas Schmidt Oscar Rodr íguez de la Fuente Source Type: research
Dose symmetric electron diffraction tomography (DS-EDT): Implementation of a dose-symmetric tomography scheme in 3D electron diffraction
Ultramicroscopy. 2023 Sep 16;255:113857. doi: 10.1016/j.ultramic.2023.113857. Online ahead of print.ABSTRACTBeam sensitive nanomaterials such as zeolites or metal-organic frameworks (MOF) represent a great challenge for crystallographic structure determination and refinement. The strong electron-matter interaction and the high spatial resolution achievable make electron diffraction the technique of choice for particles of sizes below a micrometer and many different 3-dimensional electron diffraction (3D ED) techniques have been developed in recent years. Nevertheless, beam sensitivity of the samples can lead to the crystal...
Source: Ultramicroscopy - October 5, 2023 Category: Laboratory Medicine Authors: Emre Y örük Holger Klein St éphanie Kodjikian Source Type: research
Spectromicroscopic study of the transformation with low energy ions of a hematite thin film into a magnetite/hematite epitaxial bilayer
We present a synchrotron-based spectromicroscopic investigation of a magnetite/hematite bilayer on Pt(111) grown in a two-step process by thermal evaporation and Low Energy Ion Bombardment (LEIB). The characterization includes the study of structural, electronic, chemical, and magnetic properties using X-ray Absorption Spectroscopy (XAS), Low Energy Electron Microscopy (LEEM), Photoemission Electron Microscopy (PEEM), or X-ray Magnetic Circular Dichroism (XMCD). The aim is to obtain microscopic information of the thin film before, during, and after the ion bombardment. Ion bombardment gradually transforms the topmost layer...
Source: Ultramicroscopy - October 5, 2023 Category: Laboratory Medicine Authors: Mauricio J Prieto Lucas de Souza Caldas Liviu C T ănase Thomas Schmidt Oscar Rodr íguez de la Fuente Source Type: research
Dose symmetric electron diffraction tomography (DS-EDT): Implementation of a dose-symmetric tomography scheme in 3D electron diffraction
Ultramicroscopy. 2023 Sep 16;255:113857. doi: 10.1016/j.ultramic.2023.113857. Online ahead of print.ABSTRACTBeam sensitive nanomaterials such as zeolites or metal-organic frameworks (MOF) represent a great challenge for crystallographic structure determination and refinement. The strong electron-matter interaction and the high spatial resolution achievable make electron diffraction the technique of choice for particles of sizes below a micrometer and many different 3-dimensional electron diffraction (3D ED) techniques have been developed in recent years. Nevertheless, beam sensitivity of the samples can lead to the crystal...
Source: Ultramicroscopy - October 5, 2023 Category: Laboratory Medicine Authors: Emre Y örük Holger Klein St éphanie Kodjikian Source Type: research
Spectromicroscopic study of the transformation with low energy ions of a hematite thin film into a magnetite/hematite epitaxial bilayer
We present a synchrotron-based spectromicroscopic investigation of a magnetite/hematite bilayer on Pt(111) grown in a two-step process by thermal evaporation and Low Energy Ion Bombardment (LEIB). The characterization includes the study of structural, electronic, chemical, and magnetic properties using X-ray Absorption Spectroscopy (XAS), Low Energy Electron Microscopy (LEEM), Photoemission Electron Microscopy (PEEM), or X-ray Magnetic Circular Dichroism (XMCD). The aim is to obtain microscopic information of the thin film before, during, and after the ion bombardment. Ion bombardment gradually transforms the topmost layer...
Source: Ultramicroscopy - October 5, 2023 Category: Laboratory Medicine Authors: Mauricio J Prieto Lucas de Souza Caldas Liviu C T ănase Thomas Schmidt Oscar Rodr íguez de la Fuente Source Type: research
