Article
Materials Science, Multidisciplinary
Enrico Di Russo, Lorenzo Rigutti
Summary: The combination of atom probe tomography (APT) and optical spectroscopy has yielded original results in the field of semiconductor nanoscale heterostructures, providing a deeper understanding of carrier localization and recombination mechanisms in quantum-well systems through statistical correlation. Photoluminescence spectroscopy (PL) can be performed on APT samples, allowing for sequential correlations on a single nanoscale object with higher precision and accuracy.
Article
Chemistry, Physical
M. A. Mazo, A. C. Caballero, J. Rubio
Summary: In this study, cheap, abundant, and easily-obtained carbon fillers such as graphite and carbon black were successfully incorporated into a silicon oxycarbide matrix to obtain dense crack-free bulk composites with enhanced electrical and thermal conductivities. Raman parameters were crucial for understanding the electronic and/or phonon transport in the composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Chinedu Christian Ahia, Ngcali Tile, Edson L. Meyer, Johannes Reinhardt Botha
Summary: High resolution X-ray diffraction, scanning probe microscopy, scanning electron microscopy, and optical microscopy were used to evaluate the crystallinity and morphology of epitaxial layers of InSb deposited on GaSb substrate. The study showed that the thickness and quality of the deposited InSb layers are highly sensitive to changes in growth temperatures and V/III ratios, regardless of the Sb source used. Additionally, XRD patterns indicated an improvement in crystallinity for InSb layers deposited using TMSb compared to TDMASb.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Biochemical Research Methods
Tong Xin, Yanan Lv, Haoran Chen, Linlin Li, Lijun Shen, Guangcun Shan, Xi Chen, Hua Han
Summary: This article proposes a new method for serial section registration using an unsupervised optical flow network to measure feature similarity and eliminate nonlinear deformation. The optical flow network is also used to estimate and compensate for cumulative registration error, enabling the reconstruction of biological tissue structures. Experimental results demonstrate that this method effectively improves the spatial continuity of serial sections and enhances the accuracy of registration and reconstruction for biological tissue structures.
Article
Chemistry, Physical
Munmun Basak, Md Lutfor Rahman, Md Farid Ahmed, Bristy Biswas, Nahid Sharmin
Summary: Cobalt ferrite nanoparticles were synthesized using co-precipitation technique with different precipitating agents, affecting the structure and size distribution. Various analysis methods showed highly correlated results, with SSP method being the most compatible.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Ziqian Wang, Meng Gao, Tonghua Yu, Siyuan Zhou, Mingquan Xu, Motoaki Hirayama, Ryotaro Arita, Yuki Shiomi, Wu Zhou, Naoki Ogawa
Summary: Stacking order plays a significant role in the properties of van der Waals layered magnets, and recent studies suggest possible different stackings in few-layer crystals. This study combines atomic-scale electron microscopy and theoretical calculations to show that while the bulk stacking persists in bilayers of MnPS3, the local rippling effect lifts the monoclinic symmetry of the few layers. This finding reveals the impact of rippling on the microscopic symmetry of two-dimensional materials and suggests the possibility of approaching the two-dimensional Neel antiferromagnetic honeycomb lattice in MnPS3 without reaching monolayer thickness.
Article
Energy & Fuels
Mehmet Erman Mert
Summary: The study investigated the efficiency of hydrogen production by doping nickel foam precursors with nickel, cobalt particles, and decorating with silver nano-domes. The catalyst NF/NiCo-2/Ag showed the best performance in terms of lower hydrogen overpotential, higher HPE, stability, and response during the electrolysis process in 1 M KOH.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Diana Banut Onet, Lucian Barbu Tudoran, Ada Gabriela Delean, Petra Surlin, Andreea Ciurea, Alexandra Roman, Sorana D. Bolboaca, Cristina Gasparik, Alexandrina Muntean, Andrada Soanca
Summary: The study evaluated the adhesive capacities of two flowable and two conventional hybrid resin composite materials for non-carious cervical lesions, showing dentinal microleakage despite good peripheral seal. SEM revealed occasional disruptions at the adhesive interface, while EDX confirmed the manufacturers' qualitative compositions. The four experimental composites are recommended for clinical restoration of NCCLs.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Multidisciplinary
Matthew G. Boebinger, Courtney Brea, Li-Ping Ding, Sudhajit Misra, Olugbenga Olunloyo, Yiling Yu, Kai Xiao, Andrew R. Lupini, Feng Ding, Guoxiang Hu, Panchapakesan Ganesh, Stephen Jesse, Raymond R. Unocic
Summary: An automated and feedback-controlled atomic fabrication method is developed to create 1D-2D heterostructures in MoS2 with atomic precision. The shape and symmetry of the scanning pathway can be controlled using an aberration-corrected scanning transmission electron microscope. Density functional theory calculations and ab initio molecular dynamic simulations are used to study the energetic barriers for atomic edge structures and transformation pathways. This work provides an automated method for understanding atomic-scale transformations and enables more precise atomic-scale engineering of materials.
ADVANCED MATERIALS
(2023)
Review
Biology
Michela Relucenti, Giuseppe Familiari, Orlando Donfrancesco, Maurizio Taurino, Xiaobo Li, Rui Chen, Marco Artini, Rosanna Papa, Laura Selan
Summary: Bacterial biofilms cause infections that are often resistant to antibiotics, necessitating detailed imaging techniques for research. Scanning electron microscopy with customized protocols is preferred for ultrastructural characterization of biofilm matrix and bacterial cells in drug treatment studies, providing unparalleled image quality and resolution. Various imaging methodologies, including traditional and innovative scanning electron microscopy techniques, have been used in biofilm studies to deepen understanding of their structure.
Article
Nanoscience & Nanotechnology
A. Sharma, Sree Harsha Nandam, Horst Hahn, K. Eswar Prasad
Summary: The study found significant differences in deformation behavior between Pd80Si20 nanoglass and metallic glass, with the former accommodating plastic strain through fine secondary shear bands in addition to primary shear bands, while the latter mainly relying on primary shear bands for plastic deformation; Pd80Si20 nanoglass is more pressure sensitive and softer compared to metallic glass.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Christoph Hofer, Kimmo Mustonen, Viera Skakalova, Timothy J. Pennycook
Summary: This article presents a new method for precise local 3D atomic structure analysis of 2D materials. By combining few tilt tomography with highly dose efficient ptychography, it becomes possible to analyze fragile 2D materials, particularly for the analysis of local defects.
Article
Microscopy
Zezhong Zhang, Ivan Lobato, Annick De Backer, Sandra Van Aert, Peter Nellist
Summary: This article reports the development of a nonlinear method for the fast prediction of ADF-EDX scattering cross-sections of mixed columns in heterogeneous materials. By quantitatively examining the linear incoherence between ADF and EDX signals under different microscope conditions, a prediction model based on incoherent imaging is developed and validated against simulations. This method opens up new opportunities for studying the ordering possibilities of heterogeneous materials with multiple elements.
Article
Nanoscience & Nanotechnology
Yawei Li, Li Wang, Yufeng He, Wei Zheng, Langhong Lou, Jian Zhang
Summary: The study found that as the temperature increases, the spacing of dislocation networks in the gamma/gamma' interface decreases, while the minimum creep rate increases non-linearly. This is due to the enhanced dislocation-climb in the interface and gamma'-cutting by a <010> superdislocations.
SCRIPTA MATERIALIA
(2022)
Article
Chemistry, Physical
Ondrej Dyck, Jacob L. Swett, Charalambos Evangeli, Andrew R. Lupini, Jan A. Mol, Stephen Jesse
Summary: Graphene is proposed for various nanodevice designs, but faces challenges in visualization, measurement, and manipulation at nanometer and atomic scales. This study demonstrates the use of SEEBIC imaging technique to visualize conductance and connectivity in graphene nanodevices, as well as detect subtle differences in charge transport.
