Microscopy Today Webinars
Ultrafast Transmission Electron Microscopy: Techniques and Applications
Date/Time: Tuesday, May 11, 2021 | 12:00 PM EST
With the growing applications of temporally-resolved electron microscopy for basic phenomena and reducing damage in samples, this webinar will provide an introduction to the field of ultrafast transmission electron microscopy, including techniques, equipment and historical perspectives from technical experts. A combination of historical developments with recent advances will help attendees in considering ultrafast capabilities for their own research, or satisfy general interests. The ultrafast technology review will also include a broader scope of applications enabled by ultrafast techniques using a variety of sample stimuli from multidisciplinary fields.
The objectives of this webinar:
- An appreciation of the growth of UTEM across many technical fields
- An understanding of the myths and legends of implementing UTEM
- A deep understanding of the methods available to achieve time-resolved EM
- A spark to research additional ultrafast applications
Dr. Eric Montgomery, Director of Research | Euclid Techlabs, LLC
I lead Euclid's Research Department: it's scientific team, synergistic project portfolio, and collaborative outreach. I have been awarded and led millions of dollars in research grant funding from the US DOE SBIR and STTR programs from 2012-present, particularly novel electron source development, advanced particle accelerator concepts, and novel electron microscopy technologies. My Ph.D. in Physics is from the University of Maryland College Park (2010), where I served as Assistant Research Scientist at the Institute for Research in Engineering and Applied Physics until 2018. I also enjoyed a four year part-time stint as an Adjunct Instructor at UMBC. While at Maryland I personally advised the research of over 30 university students. I have over 40 publications, two R&D 100 awards and three US patents.
Dr. John Roehling, Staff Scientist | Lawrence Livermore National Laboratory
My science career started at the University of California, Davis researching polymer photovoltaics, using transmission electron microscopy (TEM) and tomography to look at the structure of polymer/fullerene networks. Afterwards, I started at LLNL in 2014 working with pulsed TEM imaging examining the physics of solidification in metal alloys. This gained me ample experience with laser systems and solidification theory. Most recently I have branched out into laser-based additive manufacturing and have been working toward using pulsed electron imaging to examine the rapid solidification that occurs in additive manufacturing in finer detail.
From Centimeter to Micrometer: Laser-Assisted Microdiagnostic
Thursday, November 12, 2020 | 11:00 a.m. ET
Preparation of a sample can take a while and is often challenging. In times when the production of materials and products becomes more and more complex, and components are getting smaller, also test, analysis, and diagnostics methods are becoming more complex and expensive. There will be a high need to speed up these processes, simplify them in advance and tailor them to the appropriate procedures.
Ultra-short-pulsed laser based sample preparation can speed up the preparation and widen the prep-ability in the field of microstructures and beyond. Due to the high ablation rates new specimen designs are possible which open up new opportunities for R&D and material analysis.
This webinar will show general approaches for:
- Cross sections for high resolution SEM analysis by box and line cuts
- Preparation of micromechanical test samples
- Milling of pillars and cylindrical samples for X-CT and Atom Probe Tomography
- Preparation of TEM lamellas even from complex and bulky devices
Boris Arnold Rottwinkel is product manager for microPREP at 3D-Micromac AG in Germany. He holds a diploma in material science from Friedrich-Alexander-University Erlangen Nuremberg. After several years as a PhD candidate at the Laser Zentrum Hannover e.V., he worked as an application specialist for material characterization and nano production. In 2018 he joined 3D-Micromac and is now responsible for the microPREP family and further development of these tools.
Utilizing Dynamic CT Imaging for True In Situ Experimentation
Thursday, August 13, 2020 | 1:00 p.m. ET
The technique of time-resolved 3D imaging with X-rays has rapidly emerged as an essential part of a researcher's toolkit for understanding materials evolution. The expansion into "4D" has facilitated in situ investigations ranging from mechanical deformation of solids to fluid flow in porous materials to the evolution of structure in changing environmental conditions. Imaging of dynamic processes specifically processes happening over a short time-period, has been one of the key applications at synchrotron micro-CT beamlines, with temporal resolutions well below one second. However, access to these facilities is often limited, with respect to both time at the beamline and application specificity.
In the laboratory, image quality and spatial resolution have been significantly improved over the last decade, providing researchers routine and regular access to very high quality computed tomography data. However, the advances in temporal resolution have been less accelerated, especially for imaging dynamic processes. Lab-based CT has been limited to pseudo in situ experimentation where data are collected on interrupted processes allowing for the traditionally longer and non-continuous scanning protocols. Additionally, analyzing and visualizing complicated data from 3D studies has been fairly burdensome. Over the last several years, development at TESCAN has focused on addressing these problems and has now made it possible to acquire, visualize, and analyze micro-CT data on uninterrupted and dynamic processes. Through a number of hardware and software advances, temporal resolution has been pushed below 10 seconds per scan, opening up new frontiers for lab-based 4D CT work.
In this talk we explore the challenges and innovations that have led to dynamic CT, highlighting several applications across materials sciences, life sciences, and geosciences. Click here to register.
Luke Hunter is the regional product manager for North and South America for TESCAN’s Micro-CT product lines. He has over a decade of experience in the X-ray microscopy and micro-CT industries, as an application specialist, applications manager, and product manager. After extensive time focusing on high resolution computed tomography, Luke was very excited by the opportunity to join TESCAN and push the boundaries of the field through lab-based dynamic CT. He received his master’s degree from the University of California, Berkeley (Berkeley, CA USA) in Mechanical Engineering and his bachelor’s degree, also in Mechanical Engineering, from Washington State University (Pullman, WA USA).
TESCAN is a global supplier of scientific instrumentation and microscopy solutions, headquartered in Brno, Czech Republic. The company is focused on research, development, and manufacturing of scientific instruments and laboratory equipment including electron- and ion microscopy, micro-CT, and more.