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<Experiment xmlns="https://data.nist.gov/od/dm/nexus/experiment/v1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<title>EELS dataset used for machine learning in github.com/trygvrad/RNN-on-EELS-data</title>
<summary ref="https://zenodo.org/records/2580185">
<experimenter>Sarah Chen</experimenter>
<instrument pid="FEI-Titan-STEM">FEI Titan STEM</instrument>
<reservationStart>2026-03-27T06:19:08-06:00</reservationStart>
<reservationEnd>2026-03-27T06:19:08-06:00</reservationEnd>
<motivation>EELS dataset used for machine learning. The dataset shows a GaN substrate with an AlGaN film and SiNX top layer The data is courtesy of Andrew Lang and Mitra Taheri, and was uploaded by Trygve M.
Data source: <a href="https://doi.org/10.5281/zenodo.2580185">https://doi.org/10.5281/zenodo.2580185</a>
CC BY 4.0.</motivation>
</summary>
<sample id="sample-1">
<name>2580185</name>
<description>EELS dataset used for machine learning in github.</description>
</sample>
<acquisitionActivity seqno="0">
<startTime>2026-03-27T06:19:08-06:00</startTime>
<sampleID>sample-1</sampleID>
<setup>
<param name="Acceleration Voltage" unit="volt">200000.0</param>
<param name="Cs" unit="millimeter">0.0</param>
<param name="GMS Version">3.21.1374.0</param>
<param name="Horizontal Field Width" unit="micrometer">0.22735075707425548</param>
<param name="Illumination Mode">STEM</param>
<param name="Imaging Mode">MAG</param>
<param name="Name">JEOL COM</param>
<param name="NexusLIMS Extraction – Module">nexusLIMS.extractors.plugins.dm3_extractor</param>
<param name="NexusLIMS Extraction – Version">2.6.1.dev0</param>
<param name="Operation Mode">SCANNING</param>
<param name="STEM Camera Length" unit="millimeter">20.0</param>
<param name="Spectrum Imaging – Acquisition Duration" unit="second">1545</param>
<param name="Spectrum Imaging – Pixel time" unit="second">0.00246016</param>
<param name="Spectrum Imaging – Scan Mode">2D Array</param>
<param name="Spectrum Imaging – Spatial Sampling (Horizontal)">228</param>
<param name="Spectrum Imaging – Spatial Sampling (Vertical)">146</param>
<param name="Stage Position – Tilt Alpha" unit="degree">5.050000190734863</param>
<param name="Stage Position – Tilt Beta" unit="degree">0.25</param>
<param name="Stage Position – x" unit="micrometer">90.2841015625</param>
<param name="Stage Position – y" unit="micrometer">73.426296875</param>
<param name="Stage Position – z" unit="millimeter">3.0525</param>
<param name="magnification">2000000.0</param>
</setup>
<dataset type="Image" role="Experimental">
<name>ADF Image.dm3</name>
<location>/2580185/ADF Image.dm3</location>
<format>DM3</format>
<description>ADF STEM image, 146×228 pixels, GaN/AlGaN sample</description>
<preview>/2580185/ADF Image.dm3.thumb.png</preview>
<meta name="Analytic Label">Scan Signal</meta>
<meta name="Data Dimensions">(146, 228)</meta>
<meta name="Data Type">STEM_Imaging</meta>
<meta name="NexusLIMS Extraction – Date">2026-03-26T23:50:29.427531-06:00</meta>
<meta name="Creation Time">2026-03-27T06:19:08-06:00</meta>
</dataset>
<dataset type="SpectrumImage" role="Experimental">
<name>EELS Spectrum Image.dm4</name>
<location>/2580185/EELS Spectrum Image.dm4</location>
<format>DM4</format>
<description>EELS spectrum image, 146×228 spatial pixels, GaN/AlGaN/SiNx stack</description>
<preview>/2580185/EELS Spectrum Image.dm4.thumb.png</preview>
<meta name="Acquisition Device">K2-0001</meta>
<meta name="Analytic Acquisition Mode">Parallel dispersive</meta>
<meta name="Analytic Format">Spectrum image</meta>
<meta name="Analytic Label">EELS</meta>
<meta name="Analytic Signal">EELS</meta>
<meta name="Binning (Horizontal)">1</meta>
<meta name="Binning (Vertical)">1</meta>
<meta name="Camera/Detector Processing">Dark Subtracted</meta>
<meta name="Data Dimensions">(146, 228, 3710)</meta>
<meta name="Data Type">EELS_Spectrum_Imaging</meta>
<meta name="EELS – Collection semi-angle" unit="milliradian">45.0</meta>
<meta name="EELS – Convergence semi-angle" unit="milliradian">8.0</meta>
<meta name="EELS – Exposure" unit="second">0.00246016</meta>
<meta name="EELS – Number of frames">1</meta>
<meta name="Exposure Time" unit="second">0.00246016</meta>
<meta name="NexusLIMS Extraction – Date">2026-03-26T23:50:23.253726-06:00</meta>
<meta name="Creation Time">2026-03-27T06:19:08-06:00</meta>
</dataset>
<dataset type="Image" role="Experimental">
<name>Gatan STEM Image.dm3</name>
<location>/2580185/Gatan STEM Image.dm3</location>
<format>DM3</format>
<description>STEM survey image, 146×228 pixels, GaN/AlGaN sample</description>
<preview>/2580185/Gatan STEM Image.dm3.thumb.png</preview>
<meta name="Analytic Label">Scan Signal</meta>
<meta name="Data Dimensions">(146, 228)</meta>
<meta name="Data Type">STEM_Imaging</meta>
<meta name="NexusLIMS Extraction – Date">2026-03-26T23:50:18.779324-06:00</meta>
<meta name="Creation Time">2026-03-27T06:19:08-06:00</meta>
</dataset>
</acquisitionActivity>
</Experiment>
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