Applying deep learning in automatic and rapid measurement of lattice spacings in HRTEM images
Sign Up to like & getrecommendations! Published in 2020 at "Science China Materials"
DOI: 10.1007/s40843-020-1368-7
Abstract: 在图像处理与分析领域, 深度学习发挥着日渐重要的作用. 我们将深度学习应用于高分辨率透射电子显微镜(HRTEM)图像晶 面间距的自动快速测量中, 通过对随机样本数据训练得到具有U型 结构的神经网络, 开发了一种新的图像处理方法. 本方法能够自动 提取快速傅里叶变换(FFT)图像中的衍射斑点, 进一步在计算机视 觉技术的协助下, 可以自动计算与FFT图像中被识别的衍射点相对 应的晶格间距, 并与标准晶体结构数据进行比较. 以Fe3 O4 纳米粒子 的HRTEM图像为例, 用本方法进行自动测量的晶格间距与手动测 量的晶格间距相比, 误差小于1%. 我们的工作证明了深度学习技术 在协助晶体材料发展方面的巨大潜力. read more here.
Keywords: learning automatic; hrtem; deep learning; rapid measurement ... See more keywords
Atomic-Scale Investigation of Electromigration with Different Directions of Electron Flow into High-Density Nanotwinned Copper through In Situ HRTEM
Sign Up to like & getrecommendations! Published in 2021 at "Acta Materialia"
DOI: 10.1016/j.actamat.2021.117250
Abstract: Abstract Electromigration (EM) has aroused substantial attention with the shrinkage of modern devices. EM is an interaction between electron carriers and atoms, meaning that it arises from atomic behaviour. Both the number of twin boundaries… read more here.
Keywords: scale investigation; atomic scale; hrtem; electron flow ... See more keywords
Ni-bearing smectites in the Wingellina laterite deposit (Western Australia) at nanoscale: TEM-HRTEM evidences of the formation mechanisms
Sign Up to like & getrecommendations! Published in 2020 at "Applied Clay Science"
DOI: 10.1016/j.clay.2020.105753
Abstract: Abstract Ni-bearing clays represent the main ore minerals in many laterite districts. Although the world-class Wingellina deposit (Western Australia) is an oxide-dominated ore, about 30% of the total Ni resources are hosted in the saprolitic… read more here.
Keywords: hrtem; bearing smectites; tem hrtem; formation ... See more keywords
Nanoscale pore structure of Carboniferous coals from the Ukrainian Donets Basin: A combined HRTEM and gas sorption study
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Coal Geology"
DOI: 10.1016/j.coal.2020.103484
Abstract: Abstract Various compositional, depositional and maturity related influencing factors affect the complex pore structure of coal. To study the pore structural evolution at nanoscale, a well characterized sample set of vitrinite-rich Carboniferous coals from the… read more here.
Keywords: hrtem; study; gas; maturity ... See more keywords
On the influence of the electron dose rate on the HRTEM image contrast.
Sign Up to like & getrecommendations! Published in 2017 at "Ultramicroscopy"
DOI: 10.1016/j.ultramic.2016.11.016
Abstract: We investigate a possible dependence between the applied electron dose-rate and the magnitude of the resulting image contrast in HRTEM of inorganic crystalline objects. The present study is focussed on the question whether electron irradiation… read more here.
Keywords: hrtem; contrast; image contrast; electron dose ... See more keywords
Ionic Liquid by Hitachi Enables In-Situ Imaging of Potable Water in IV-HRTEM
Sign Up to like & getrecommendations! Published in 2017 at "Microscopy and Microanalysis"
DOI: 10.1017/s1431927617005013
Abstract: In-situ and operando electron microscopy have opened the realm of liquids for exploration under high vacuum conditions and with high-energy electrons. Liquid-cell holders provide a technical approach that allows introduction of still and flowing water… read more here.
Keywords: ionic liquid; hrtem; microscopy; water ... See more keywords
Synthesis and HRTEM Investigation of EuRbFe4As4 Superconductor
Sign Up to like & getrecommendations! Published in 2022 at "Nanomaterials"
DOI: 10.3390/nano12213801
Abstract: In the stoichiometric iron-based superconductor EuRbFe4As4, superconductivity coexists with a long-range magnetic ordering in Eu layers. Using high-resolution transmission electron microscopy (HRTEM), we observed an atomic structure of as-grown EuRbFe4As4 crystals. HRTEM shows that crystals… read more here.
Keywords: eurbfe4as4 superconductor; superconductor; synthesis hrtem; investigation eurbfe4as4 ... See more keywords