To detect elemental composition in GX (CP) or GX (IO), Scanning transmission electron microscopy – Energy-dispersive X-ray spectroscopy (STEM-EDS) was used. To perform measurements, carbon-coated copper grids with air-dried nanoparticles were inserted using a single-sample low-background double-tilt holder. After STEM alignment, STEM microscopy was performed at 200 kV in high angle annular dark field (HAADF) imaging mode. The STEM-EDS map acquisitions were then performed using a 30 mm2 active area Bruker Silicon Drift Detector with a super light element window. Final spectral plots were then collected and saved using Bruker ESPIRIT software.
Espirit software
Manufactured by Bruker
ESPIRIT software is a data acquisition and analysis tool developed by Bruker for electron paramagnetic resonance (EPR) spectroscopy. It provides the core functionality to control EPR spectrometers and process the collected data.
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Lab products found in correlation
2 protocols using espirit software
1
Elemental Composition Analysis of G^X Nanoparticles
2
Characterization of Laser-Deposited Particles
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Particles of the laser-deposited samples were scratched off the surface of the glass substrate, dispersed in ethanol, and ultrasonicated for 5 minutes. The particle dispersion was then drop-cast onto lacey carbon TEM grids. HRTEM and scanning TEM/EDS (STEM-EDS) of the sample was performed using an FEI Talos F200X microscope at The Pennsylvania State University, operating at an accelerating voltage of 200 kV and offering angstrom image resolution. A high angle annular dark field detector was used for STEM image acquisition and EDS data collection using the Super-X EDS quad detector system at an accelerating voltage of 200kV and current of ∼0.15 nA. Standardless Cliff-Lorimer quantification was performed on the deconvoluted EDS line intensity data using the Bruker Espirit software.
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