K3 IS 直接探测相机用途广泛,在对材料反应的原位表征中能够轻松无障碍的在低剂量和高速成像之间切换。K3 IS 相机的大视野能够在诸如环境电镜中特定温度下对纳米颗粒的相变研究,电池阳极的锂化过程,以及在原位表征过后对纳米线运用 4D STEM 进行应变分布等应用中带来优势。此外,低剂量表征能够与针对包括电池电极/电解液、金属有机框架结构等在内的电子束敏感材料的冷冻成像技术互相结合。电子束敏感环境成像能够充分利用 K3 IS 这一先进相机的实时帧平均功能,在采集外场刺激施加前浏览样品,同时相机的“回看”功能能够防止关键图像的丢失。本次网络研讨会将通过一系列的材料体系和反应,凸显 K3 IS 相机的原位和低剂量成像功能及其广泛用途和易用界面。
我们的工作集中在原位研究上,细节将着重讨论快速反应和电子束敏感材料。
主讲人
Katherine Jungjohann, Ph.D., Center for Integrated Nanotechnologies, Sandia National Laboratories
John Watt, Ph.D., Center for Integrated Nanotechnologies, Los Alamos National Laboratory
Electron energy-loss spectrum imaging is well established as a powerful tool for materials analysis. The wealth of information available beyond simple composition, coupled with high signal collection efficiency in next-generation imaging filters makes this technique particularly advantageous for advanced analysis and mapping.
Webinar: Practical approaches for in-situ and environmental transmission electron microscopy
During this webinar Dr. Ai Leen Koh will speak about how in-situ transmission electron microscopy (TEM) concerns the examination of dynamic events in a sample under a controlled, externally applied stimulation.
In this webinar, we covered many examples of usage of direct detection cameras at Northwestern University, from the imaging of soft materials to special applications of 4D-STEM in hybrid interfaces. In particular, we covered the performance of the new Gatan K3 IS, which allows the acquisition of in-situ imaging and 4D STEM data in counted mode with high temporal resolution.
PRESENTER: Roberto dos Reis, Ph.D.
Department of Materials Science and Engineering, Northwestern University