Lotiskorea Newsletter Vol. 28
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📖 This exciting new publication uses the #FusionAX to grow hexagonal silicon - germanium nanowires! These nanowires were cultivated on epitaxial lattice-matched templates comprising wurtzite GaP and GaAs, respectively.
🔥Using in situ transmission electron microscopy, the authors were allowed the authors to witness the growth process in real time with unprecedented clarity. They have demonstrated the remarkable tunability of composition across the entire spectrum, from pure Si to Ge. Moreover, they were able to fabricate intricate Si and SiGe heterostructures within these branches, opening doors to a myriad of possibilities in electronic and optoelectronic applications.
Want to read the entire publication?
https://lnkd.in/eTgwjN72 |
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📖 A new pioneering technique, known as secondary electron e-beam-induced current (SEEBIC), offers atomic-scale insights into material properties like conductivity, connectivity, and work function. However, this technique can also be used together with in situ electron microscopy. In this newest work, authors used the #FusionAX system and SEEBIC imaging on a stacked 2D heterostructure device, unveiling the spatial electron density of an encapsulated WSe2 layer.
👀Surprisingly, the double Se lattice site exhibited higher emission compared to the W site, challenging existing valence ionization models of isolated WSe2 clusters.
🔬These findings shed light on the potential for atomic-level SEEBIC contrast within a single material, signaling the need for a deeper understanding of atomic-scale SE emission. This quest promises insights into interlayer bonding nuances and their impact on electron orbitals, offering a glimpse into future possibilities for this technique.
Want to read the entire work?
Find it here!
https://lnkd.in/edJxGjWB |
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📖 This publication in Small delves into the intricate world of 2D materials! Using the FusionAX, material behavior under high bias conditions can be observed at the nanoscale.
⚡️The structural evolution of monolayer MoS2 under intense biasing conditions was meticulously dissected at the atomic scale. The researchers captured and analyzed the dynamic interplay of electrons, shedding light on crucial insights that pave the way for transformative advancements in electronics and optoelectronics.
🔬One of the key things that was observed: Mo nanoclusters stemming from the disintegration of MoS2 and sulfur depletion, driven by the intense heat generated during biasing. This thermal stress left its mark in the form of long cracks, both in situ and ex situ.
Join us in the pursuit of knowledge as we try and scale bulk experiments to nano, accelerate productivity and foster collaboration and growth!
Read the full publication here:
https://lnkd.in/eUnJCCMq |
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📖 Congratulations on a great #NatureCommunications from authors Ahmed Abdellah of the group of Leyla Soleymani and Drew Higgins! In this newest publication, they showed how to remarkably do #diffraction at operando level during in situ electrochemistry. They used the #PoseidonAX system to look at Pd-based catalysts for the CO2 conversion into formate.
💧⚡️Using in-situ liquid-phase transmission electron microscopy and select area diffraction measurements they were able to track the dynamic evolution of Pd/PdHx phase interconversion as a function of electrode potential. These cutting-edge techniques illustrated degradation mechanisms on PdHx/Pd nanoparticles, including the effects of poisoning and physical structure alterations.
📈The shift in electrochemical CO2 conversion selectivity towards CO/H2 at increasing overpotentials was attributed not to morphological or phase structure changes, but rather to electrode potential-dependent alterations in reaction energetics.
Would you like to read the whole publication? Find it here:
https://lnkd.in/exN2pZSD |
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📖 Congratulations on this newest publication from the #NorthwesternUniversity and the group of @Sossina Haile! This group did a great job at using in situ electron microscopy to look at molybdenum nitrides and oxynitrides materials with a promising a wide array of applications across various fields such as catalysis using our #AtmosphereAX system. The goal of the study was to unravel the intricate transformation of MoO3 into its final nitride product and shed light on the elusive intermediates along the way.
🔬 Two key intermediates, MoO2 and HxMoO3-I(x ≈ 0.3), have been found, providing crucial insights into the complex evolution of molybdenum species during ammonolysis. Surprisingly, hexagonal δMoN emerges as a fleeting, high-temperature intermediate, offering a glimpse into the dynamic nature of this transformation. Contrary to previous beliefs, direct transformation from HxMoO3-I to γ-MoOxNy was not found—a revelation that reshapes our understanding of molybdenum nitride synthesis.
💡Despite showing intermediate transformations, single-phase γ-MoOxNy can be achieved, opening new avenues for tailoring the morphology and chemistry of these compounds. This comprehensive elucidation of the reaction pathway not only deepens our fundamental understanding but also paves the way for future advancements in molybdenum-based catalysis.
Would you like to read the full publication?
https://lnkd.in/eAm5VXMM |
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📖 This recent publication from the group of Kerstin Volz, written by Maximilian Widemann, David Peter Krug and Andreas Beyer published in Small Methods, uses the #AtmosphereAX system to grow and observe GaP nanowires in real time!
💡 Using tertiary butyl phosphine (TBP) and trimethyl gallium (TMGa), the authors were able to observe GaP growth within a dynamic environment. The thermal decomposition of TBP and TMGa, was replicated, mirroring traditional reactor setups with uncanny precision.
🔥It was shown that the decomposition temperatures were aligned with susceptor temperatures in MOVPE machinery, validating the reliability of this research method. This is a new step in the crystal growth observation under MOVPE conditions within the confines of a TEM.
Want to read the entire publication?
https://lnkd.in/eGRaXUJr |
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문의
Email : hskim@lotiskorea.com
Tel : 010-2858-2798 |
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