Region II Update:
The Northwestern University Atomic and Nanoscale Characterization Experimental Center (NUANCE) recently announced the installation of a new state-of-the-art Electron Beam Lithography System (EBL) in their Micro/Nanofabrication facility—the Raith Voyager 100 EBL. This system is ideal for quickly patterning nano-scale structures (down to <10 nm) over large spatial areas (up to cm2 areas). It is also capable of accommodating a wide range of sample sizes, from just a few mm2 to 100 mm2. Researchers from across the country studying diverse disciplines are now able to reserve time on this system! Visit the website to learn more and use this instrument for your research!
Region III Update:
Thermo-mechanical processing of steel can lead to the transformation of austenite into martensite. The microstructure of the resulting martensite correlates well with the size of prior austenite grains (PAGs). By using a graph-cutting clustering algorithm, Brust and co-authors developed a new-and-improved probabilistic technique for reconstructing and visualizing prior austenite grains from electron backscatter diffraction data of tempered steel. This technique avoids artifacts often created by other austenite reconstruction codes and will help researchers better understand the austenite-martensite transformation.
To learn more about this research, consult the October issue of Microscopy and Microanalysis - Brust et al. (2021) “Probabilistic Reconstruction of Austenite Microstructure from Electron Backscatter Diffraction Observations of Martensite” https://doi.org/10.1017/S1431927621012484.
Region V Update:
In an exciting new research, a computational lens has been able to achieve the highest achievable numerical aperture and throughput to date. Researchers at the University of Connecticut were able to replace the traditional objective lens with a disorder-engineered surface. This super-resolution imaging technique is based on parallel-coded ptychography. This research was published in the Journal - ACS Photonics.
Shaowei Jiang, Chengfei et al. “Resolution-Enhanced Parallel Coded Ptychography for High Throughput Optical Imaging”, ACS Photonics. https://pubs.acs.org/doi/10.1021/acsphotonics.1c01085
Region VI Update 1:
Dr. Joshua L. Vincent from Crozier Group in ASU has recently published a paper about observation of fluxional behavior of catalyst particles on the atomic level. By applying aberration corrected operando TEM, the structural dynamics is successfully being recorded at and near metal catalysis/reducible oxide interface during CO oxidation. They also showed that the fluxional behavior is closely related to the reaction process of CO oxidation, namely the Mars-van Krevelen mechanism.
The research is published in Nature Communication -- Vincent, J.L., Crozier, P.A. Atomic level fluxional behavior and activity of CeO2-supported Pt catalysts for CO oxidation. DOI: https://doi.org/10.1038/s41467-021-26047-8
Region VI Update 2:
An exciting development, researchers have recorded the first-ever breaking of a single chemical bond between Carbon (C) and Iron (Fe). The feat was achieved using high-resolution Atomic Force Microscopy (AFM) in a controlled lab setting. This collaborative research involving multiple universities was led by the researchers at Princeton University’s Imaging and Analysis Center. This work was published in late September in the Journal - Nature Communications.
“Chen, P., Fan, D., Zhang, Y. et al. Breaking a dative bond with mechanical forces. Nat Commun 12, 5635 (2021). https://doi.org/10.1038/s41467-021-25932-6”
Region X Update:
The Plymouth Electron Microscopy Centre (PEMC) starts hosting a series of monthly seminars on a broad range of microscopy topics, including electron microscopy, optical microscopy, x-ray microscopy, and others. The first seminar, entitled “2D and 3D Optical Mesoscopy With The Mesolens”, held by Gail McConnell (University of Strathclyde), will take place on November 10 online. The program starts at 12 A.M. GMT, including a 35-minute talk, and will finish at around 1 P.M. GMT. The series will continue on December 8 and January 12. It is addressed to researchers, academics, and students and is free to attend. However, each event has to be booked via the link on their website: https://www.plymouth.ac.uk/whats-on/pemc-imaging-matters-event-series-introduction