Anomaly Detection in the Molecular Structure of Gallium Arsenide Using Convolutional Neural Networks

This paper concerns the development of a machine learning tool to detect anomalies in the molecular structure of Gallium Arsenide. We employ a combination of a CNN and a PCA reconstruction to create the model, using real images taken with an electron microscope in training and testing. The methodolo...

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Main Authors: Timothy Roche, Aihua Wood, Philip Cho, Chancellor Johnstone
Format: Article
Language:English
Published: MDPI AG 2023-08-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/11/15/3428
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author Timothy Roche
Aihua Wood
Philip Cho
Chancellor Johnstone
author_facet Timothy Roche
Aihua Wood
Philip Cho
Chancellor Johnstone
author_sort Timothy Roche
collection DOAJ
description This paper concerns the development of a machine learning tool to detect anomalies in the molecular structure of Gallium Arsenide. We employ a combination of a CNN and a PCA reconstruction to create the model, using real images taken with an electron microscope in training and testing. The methodology developed allows for the creation of a defect detection model, without any labeled images of defects being required for training. The model performed well on all tests under the established assumptions, allowing for reliable anomaly detection. To the best of our knowledge, such methods are not currently available in the open literature; thus, this work fills a gap in current capabilities.
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spelling doaj.art-72adde813f84481ea6c5915ae5ec44e92023-11-18T23:16:32ZengMDPI AGMathematics2227-73902023-08-011115342810.3390/math11153428Anomaly Detection in the Molecular Structure of Gallium Arsenide Using Convolutional Neural NetworksTimothy Roche0Aihua Wood1Philip Cho2Chancellor Johnstone3Department of Mathematics & Statistics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433, USADepartment of Mathematics & Statistics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433, USADepartment of Mathematics & Statistics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433, USADepartment of Mathematics & Statistics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433, USAThis paper concerns the development of a machine learning tool to detect anomalies in the molecular structure of Gallium Arsenide. We employ a combination of a CNN and a PCA reconstruction to create the model, using real images taken with an electron microscope in training and testing. The methodology developed allows for the creation of a defect detection model, without any labeled images of defects being required for training. The model performed well on all tests under the established assumptions, allowing for reliable anomaly detection. To the best of our knowledge, such methods are not currently available in the open literature; thus, this work fills a gap in current capabilities.https://www.mdpi.com/2227-7390/11/15/3428electron microscopeconvolutional neural networks (CNNs)anomaly detectionprincipal component analysis (PCA)machine learningdeep learning
spellingShingle Timothy Roche
Aihua Wood
Philip Cho
Chancellor Johnstone
Anomaly Detection in the Molecular Structure of Gallium Arsenide Using Convolutional Neural Networks
Mathematics
electron microscope
convolutional neural networks (CNNs)
anomaly detection
principal component analysis (PCA)
machine learning
deep learning
title Anomaly Detection in the Molecular Structure of Gallium Arsenide Using Convolutional Neural Networks
title_full Anomaly Detection in the Molecular Structure of Gallium Arsenide Using Convolutional Neural Networks
title_fullStr Anomaly Detection in the Molecular Structure of Gallium Arsenide Using Convolutional Neural Networks
title_full_unstemmed Anomaly Detection in the Molecular Structure of Gallium Arsenide Using Convolutional Neural Networks
title_short Anomaly Detection in the Molecular Structure of Gallium Arsenide Using Convolutional Neural Networks
title_sort anomaly detection in the molecular structure of gallium arsenide using convolutional neural networks
topic electron microscope
convolutional neural networks (CNNs)
anomaly detection
principal component analysis (PCA)
machine learning
deep learning
url https://www.mdpi.com/2227-7390/11/15/3428
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AT aihuawood anomalydetectioninthemolecularstructureofgalliumarsenideusingconvolutionalneuralnetworks
AT philipcho anomalydetectioninthemolecularstructureofgalliumarsenideusingconvolutionalneuralnetworks
AT chancellorjohnstone anomalydetectioninthemolecularstructureofgalliumarsenideusingconvolutionalneuralnetworks