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Studying materials with atomic resolution by scanning transmission electron microscopy (STEM) is nowadays routinely carried out to gain insight into their structure and electronic coordination. In situ microscopy is a particularly valuable tool to study catalyst dynamics under relevant conditions. Within an in situ cell, elevated temperatures and controlled gas/liquid environments are used to mimic these conditions. This approach is a cornerstone of Dr. Manfred Schuster and Dr. Julia Parker's research at Johnson Matthey, a global leader in sustainable technologies.
In this DENSsolutions Nanotalk, Dr. Schuster and Dr. Parker demonstrate the application of the DENSsolutions Climate system across electron microscopy and X-ray microscopy modalities, to access imaging and spectroscopy information at different lengthscales. Due to Climate's modular design, both the removable tip of the holder and the MEMS smart sample carrier work as a kind of 'Lab-on-a-Cartridge'. This enables interoperability and correlative studies with techniques like SEM, Raman spectroscopy and synchrotron/X-ray microscopy. Importantly, the researchers present the technical development and infrastructure that enable them to use their Climate system at the Hard X-ray Nanoprobe Beamline (I14), a beamline at Diamond Light Source dedicated for nanoscale microscopy.
The I14 beamline enables multi-modal analysis of heterogeneous samples providing elemental mapping, speciation mapping by XANES, structural phase mapping by nano-XRD and imaging through differential phase contrast and ptychography. Moreover, the beamline boasts a beam size of 50 nm, an energy range of 5-23 keV and a flexible scanning system which allows for fast acquisition, simple data acquisition software and the ability to process data in near real-time. By incorporating Climate into the beamline, the researchers are able to make use of its unique capabilities while still reaping the benefits of x-ray microscopy.
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Advanced in situ TEM solutions for heating, biasing, gas and liquid experiments. Stimulate your sample and start capturing dynamics today.
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