Cryogenic sample preparation, cryogenic-vacuum sample transfer and cryogenic analysis have become of increasing interest to the electron microscopy and atom probe tomography communities. Cryogenic workflows open up the application of APT to the analysis of beam sensitive materials, frozen liquids, frozen liquid/solid interfaces and mobile elements such as hydrogen/deuterium.
Through the integration of multiple high resolution cryogenic microscopy techniques, we can characterize the structure and composition of environmentally-sensitive materials systems across multiple length scales. There are significant challenges in the sample preparation, transfer and analysis of such materials compared to those at room temperature, and optimizing each of these stages is crucial to reproducible protocols.
In this webinar, we discuss these challenges in detail and present our progress in developing and implementing cryogenic workflows for site-specific lift out for APT analysis.
Available on demand at our Thinkific website.
About the presenter:
Dr. James O. Douglas
Research Facility Manager
Imperial Centre for Cryo Microscopy of Materials at Imperial College London
James is a Research Facility Manager at the Imperial Centre for Cryo Microscopy of Materials I(CM)2 at Imperial College London, UK and is responsible for developing cryogenic sample preparation and transfer protocols for high resolution complementary nanoscale analysis for atom probe and electron microscopy.
Prior to his current role, James was the Atom Probe Scientist for the UK National Nuclear User Facility (NNUF) Nuclear Materials Atom Probe (NuMAP) at the University of Oxford. He completed his Materials DPhil at the University of Oxford (2017) under the supervision of Professor Michael Moody and Dr Paul Bagot at the Oxford Atom Probe Group and carried out post-doctoral work there on radiation damage in structural nuclear steels.
