Review
Materials Science, Multidisciplinary
Christian Dwyer
Summary: This article provides a comprehensive overview of quantitative annular dark-field imaging in scanning transmission electron microscope, focusing on image quantification methods and the application of quantitative data, such as density functional theory calculations, to correlate nanomaterial properties with atomic-level structure.
JOURNAL OF PHYSICS-MATERIALS
(2021)
Article
Chemistry, Physical
Annick De Backer, Zezhong Zhang, Karel H. W. van den Bos, Eva Bladt, Ana Sanchez-Iglesias, Luis M. Liz-Marzan, Peter D. Nellist, Sara Bals, Sandra Van Aert
Summary: The methodology combines energy dispersive X-ray spectroscopy (EDX) and high angle annular dark field scanning transmission electron microscopy (HAADF STEM) to count the number of atoms in multimetallic nanocrystals, allowing extraction of 3D structural information at the atomic scale.
Article
Chemistry, Physical
Nadine Eissmann, Uwe Muehle, Uwe Gaitzsch, Gunnar Walther, Thomas Weissgaerber, Bernd Kieback
Summary: The effect of titanium addition beyond the solubility limit was investigated to demonstrate the precipitation hardening possibility of the Cantor alloy CoCrFeMnNi. Following appropriate heat treatment, a significant increase in hardness was detected due to nanometer-sized precipitates identified through TEM analysis.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Baris Yavas, Cain J. Hung, Mingxuan Li, Rainer J. Hebert, S. Pamir Alpay, Mark Aindow
Summary: Laser glazing in a powder bed fusion instrument was used to evaluate the microstructure of an Al85Cu6Fe3Cr6 alloy, revealing the presence of I-phase quasicrystals, Al2Cu, and FCC Al. Laser tracks produced under different conditions showed a fine and uniform phase mixture with over 70% I-phase, a thin film of Al2Cu, and no cracking or macrosegregation. The reasons for the formation of I-phase instead of the previously reported D-phase in this alloy were discussed.
SCRIPTA MATERIALIA
(2023)
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
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
Materials Science, Composites
Yitong Ding, Qian Zhou, Xingwei Li, Ying Xiong, Shaoyun Guo
Summary: In this study, a melt blending method was used to prepare light-scattering materials with improved performance. The scattering range and uniformity were enhanced while the percolation threshold of scattering angle was reduced.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Thomas Willum Hansen, Marc Willinger
Summary: Catalysis is a highly complex phenomenon involving fundamental processes on multiple length scales. The understanding of the full-scale complexity of catalysis is still limited, and the experimental documentation of how atomic-scale processes influence long-range order in materials is lacking. Elucidating the link between atomic-scale structural dynamics and collective behavior could lead to a deeper understanding and further optimization of catalysts and processes.
Article
Biochemistry & Molecular Biology
Samridhi Pathak, Nayan Deori, Aditi Sharma, Shirisha Nagotu, Avinash Kale
Summary: Tuberculosis is a serious infectious disease that affects millions of people globally every year, especially in tropical countries like India. The treatment of tuberculosis using first-line drugs can lead to drug-resistant strains and side effects such as muscle wasting and malnutrition. This study investigates the effects of these major tuberculosis drugs on actin polymerization, which plays a central role in muscle contraction. Biophysical approaches, in vivo and in vitro experiments, and computational simulations were used to understand the mechanism of muscle wasting in tuberculosis. The findings provide valuable insights into the interaction between tuberculosis drugs and actin filaments.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2022)
Article
Materials Science, Multidisciplinary
Ryan B. Sills, Douglas L. Medlin
Summary: The characterization of the three-dimensional arrangement of dislocations is important for many analyses in materials science. This paper presents a semi-automated object-based approach that reduces data collection requirements by utilizing the prior knowledge that dislocations are line objects.
MICROSCOPY AND MICROANALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Tian-Xing Yang, Zhan-Xing Li, Chang-Jun Zhou, Yi-Chun Xu, Peng Dou
Summary: FeCrAl oxide dispersion strengthened (ODS) steel is a promising cladding material for Generation IV nuclear reactors due to its superior properties. The morphologies, crystal structures, and metal/oxide interface structures of two FeCrAl ODS steels were studied. The dispersion morphology of oxides in the 3.7Al-0.1Ti-0.6Zr ODS steel was found to be better than that of the 3.3Al-0.5Zr ODS steel. The proportions of different oxides in the two ODS steels were characterized. The mechanisms of oxide formation, polymorphic transition, and strengthening in the ODS steels were discussed.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Chemistry, Applied
Vivek K. Bajpai, InWha Park, Imran Khan, Fanar Hamad Alshammari, Pradeep Kumar, Lei Chen, MinKyun Na, Yun Suk Huh, Young-Kyu Han, Shruti Shukla
Summary: The protoberberine alkaloid THBA showed significant antioxidant potential and antimicrobial activity against Bacillus cereus, disrupting the membrane integrity and inhibiting biofilm formation. It also reduced ROS levels in fibroblast cells and decreased CFU counts in raw rice, suggesting its potential as a natural antioxidant and antimicrobial agent.
Article
Food Science & Technology
Amal S. Albedwawi, Reem Al Sakkaf, Tareq M. Osaili, Ahmed Yusuf, Amin Olaimat, Shao-Quan Liu, Giovanni Palmisano, Nagendra P. Shah, Mutamed M. Ayyash
Summary: This paper investigated the ability of lactic acid bacteria (LAB) and Bifidobacterium to remove acrylamide (AA) and examined the mechanism(s) of the AA removal using various microscopic techniques. The results showed that Bifidobacterium breve and Lactiplantibacillus plantarum exhibited higher acrylamide reduction rates. The study also found that both strains could tolerate low pH levels and remove acrylamide under in vitro gastrointestinal conditions.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Maxim Ozerov, Vitaly Sokolovsky, Sergey Nadezhdin, Ekaterina Zubareva, Nadezhda Zherebtsova, Nikita Stepanov, Lujun Huang, Sergey Zherebtsov
Summary: The TiZrNb metal-matrix composites reinforced by in-situ formed borides were produced using different amounts of TiB2. The composites exhibited varying microstructures and mechanical properties with the increase in boride content. Load transfer strengthening was found to be the main contributor to the overall strength of the composite. The biocompatibility evaluation suggested a decrease in the proliferation rate of mesenchymal stem cells with an increase in boride content.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
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)
