Webinar

Acquiring high fidelity electron energy loss spectroscopy (EELS) spectra is a long-standing challenge. The combined need for a large energy range (keV), sharp energy resolution, and simultaneous high dynamic range (orders of magnitude) is a major challenge. Traditionally, EELS is recorded on a single parallel sensor. However, conventional detectors have limited dynamic range and very limited energy range at energy high resolution. These can be improved by taking two spectra in rapid succession, but at the cost of wasted dose applied to the sample (and time for acquisition).

Multi-frame spectrum image (SI) summation has been proposed and successfully demonstrated as a means of improving both scanning transmission electron microscopy (STEM) spectrum image resolution and signal-to-noise ratio (SNR) [1]. Scintillator-based CMOS and CCD detectors are inadequate for multi-frame electron energy loss spectroscopy (EELS) SI at low-dose and high speeds due to the detrimental effects of read noise.

Gatan DigitalMicrograph is a well-established software tool for performing in-situ (S)TEM experiments. This powerful capability has now been expanded to allow capture and analysis of in-situ EELS and spectrum imaging datasets. This video demonstrates the unique in-situ data acquisition and analysis capability of this advanced software platform when operated together with the GIF Continuum® K3® system.

Gatan's latest spectrometer, the Continuum, enables a wide range of techniques for (S)TEM investigations. This versatility is enhanced further with the Continuum IS, where acquisition modes have been expanded to capture data continuously over time.

This webinar will present the numerous types of data that can be collected with the Continuum IS as well as the powerful tools we provide to process that data, including our redesigned IS player and Python scripting.

In this webinar, we presented new tools for in-situ EELS spectrum imaging and in-situ 4D STEM. In addition to a simple interface for continuous acquisition with live drift correction, Gatan has developed a suite of tools for processing and visualizing these multi-dimensional datasets. While faster detectors make a continuous acquisition of analytical data feasible, these tools for the management of the resulting data make such experiments practical.

Lithium-Ionen-Batterien (Li) werden aufgrund ihrer herausragenden Energiedichte und geringen Masse für eine Vielzahl von Energiespeicheranwendungen eingesetzt. Es besteht weiterhin großes Potential zur Verbesserung der Kapazität und der Effizienz dieser Energiematerialien durch die Optimierung der verwendeten Komponenten und Materialien. Insbesondere durch den Mangel an geeigneten Charakterisierungstechniken auf der Mikro- und Nanoebene, sind die Abbaumechanismen und Strukturentwicklungen noch nicht ausreichend erforscht.

The determination of precise atomic arrangements in a crystal material is the key to understanding the structure-property relationship, and it will further facilitate synthetic designs of new materials. In the past decades, the structure determination of submicron/nanometer crystals has been achieved via 3D electron diffraction (3DED). This technique is also known as continuous rotational electron diffraction (CRED) or MicroED (microcrystal electron diffraction.

Gatan’s latest counting camera, Metro, produces excellent results at low dose rates and low to moderate accelerating voltages (60 – 200 kV). In this webinar, we show images from zeolites and MOFs, as well as diffraction patterns and 4D STEM datasets from 2D materials. We demonstrate the in-situ capabilities of the camera, which can capture video datasets at up to 41 frames per second at full 2k x 2k resolution.