University of Nottingham: New MIP for Epitaxial Growth and In-situ Analysis of 2D Semiconductors
Scienta Omicron has recently delivered a new Materials Innovation Platform (MIP) for epitaxial growth and in-situ analysis of 2D semiconductors (EPI2SEM) at the University of Nottingham. The new Ultra-High Vacuum (UHV) MIP combines a PRO-75 MBE for thin-film synthesis, a NanoESCA module for band structure and chemical analysis, and a Multiprobe Prep module with VT SPM for surface morphology studies. All modules are interconnected by a Linear Transfer Line (LTL).
New event-averaging method to map catalyst structure and local gas environment simultaneously enables depiction of transitional active surface structures
One of the key challenges in catalysis research is to understand how catalysts’ structure and function relate to each other. Regardless of the type of catalyst in question, structure and function are dynamic with a strong dependence on the localized reaction conditions such as temperature, pressure, and gas composition just above the catalyst surface. Now, researchers developed a new event-averaging-based method employing time-resolved ambient pressure photoelectron spectroscopy to map catalyst structure and local gas environment simultaneously while reaction conditions are changed rapidly. With this new method, scientists can determine in detail what triggers structural changes on the sample surface and even measure the activity during a structural transition. This enables scientists to examine active surface structures with ambient pressure photoelectron spectroscopy that only exists for sub-second time-scale during rapid transitional stages while running a chemical reaction. The publication was even featured in Nature Communications’ Editors’ Highlights webpage of recent research related to “catalysis.”
MEMO's Nanocar Race II @ C’NANO Conference
We are delighted to highlight that the C´NANO Conference 2021 will take place in Toulouse, France from 23rd to 25th November 2021. The conference begins with a MEMO satellite workshop entitled “Single molecule mechanics on a surface: gears, motors and cars”. On 23 November 2021, 6 pm all the 8 Nanocar Race II teams officially registered will present their first molecule-car prototype to the public. We are happy to support this annual event, many of the teams are running the experiments and the race on SPMs from Scienta Omicron.
Momentum Microscopy at Work
Scientists of the University of Graz succeeded in visualising the electronic structure of long-chain organic semiconductors and altering it by means of temperature effects in a controlled manner. More specifically, they demonstrated that monolayers of heptacene on Cu(110) behave markedly different compared to all previously studied oligoacene monolayers on coinage metal surfaces and are dissimilar to any other polycyclic aromatic hydrocarbons adsorbed on metal substrates studied so far. Photoemission tomography measurements were performed using the NanoESCA system and the STM and LEED measurements were performed in a two-chamber system with a variable-temperature Scanning Tunnelling Microscopy (VT STM) both from Scienta Omicron.