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Article
Open AccessAtomic Resolution Defocused Electron Ptychography at Low Dose with a Fast, Direct Electron Detector
Electron ptychography has recently attracted considerable interest for high resolution phase-sensitive imaging. However, to date studies have been mainly limited to radiation resistant samples as the electron ...
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Article
Open AccessPositive and negative regulation of carbon nanotube catalysts through encapsulation within macrocycles
One of the most attractive applications of carbon nanomaterials is as catalysts, due to their extreme surface-to-volume ratio. The substitution of C with heteroatoms (typically B and N as p- and n-dopants) has...
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Article
Open AccessJointed magnetic skyrmion lattices at a small-angle grain boundary directly visualized by advanced electron microscopy
The interactions between magnetic skyrmions and structural defects, such as edges, dislocations, and grain boundaries (GBs), which are all considered as topological defects, will be important issues when magne...
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Article
Open AccessInterfacial Atomic Structure of Twisted Few-Layer Graphene
A twist in bi- or few-layer graphene breaks the local symmetry, introducing a number of intriguing physical properties such as opening new bandgaps. Therefore, determining the twisted atomic structure is criti...
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Article
Open AccessImaging of built-in electric field at a p-n junction by scanning transmission electron microscopy
Precise measurement and characterization of electrostatic potential structures and the concomitant electric fields at nanodimensions are essential to understand and control the properties of modern materials a...
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Article
Differential phase-contrast microscopy at atomic resolution
A technique capable of detecting the electric field associated with individual atoms is now demonstrated. Atomic-resolution differential phase-contrast imaging using aberration-corrected scanning transmission ...
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Article
Direct imaging of hydrogen-atom columns in a crystal by annular bright-field electron microscopy
The resolution of electron microscopy has increased through the years, and scientists have been able to measure progressively lighter elements. The ultimate goal has now been reached with the imaging of hydrog...
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Article
Visualizing and identifying single atoms using electron energy-loss spectroscopy with low accelerating voltage
Visualizing atoms and discriminating between those of different elements is a goal in many analytical techniques. The use of electron energy-loss spectroscopy (EELS) in such single-atom analyses is hampered by...
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Article
Surface Modification of Cubic GaN Buffer Layer Grown by Metalorganic Vapor Phase Epitaxy
Anisotropic X-Ray diffraction (XRD) and transport properties of cubic GaN grown on GaAs substrates correspond to the features of low-temperature grown GaN (LT-GaN) buffer layer. When the LT-GaN layer is grown ...
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Article
A Study of the Origin of Band-A Emission in Homoepitaxial Diamond Thin Films
The band-A emission (around 2.8 eV) observed in high quality (device-grade) homoepitaxial diamond films grown by microwave-plasma chemical vapor deposition (CVD) was studied by means of scanning cathodolumines...
