scholarly journals Prediction of Time-to-Solution in Material Science Simulations Using Deep Learning

Author(s):  
Federico Pittino ◽  
Pietro Bonfà ◽  
Andrea Bartolini ◽  
Fabio Affinito ◽  
Luca Benini ◽  
...  
2021 ◽  
Author(s):  
Kenji Hata ◽  
Takashi Honda ◽  
Shun Muroga ◽  
Hideaki Nakajima ◽  
Taiyo Shimizu ◽  
...  

Abstract Artificial intelligence is an emerging frontier in material science to discover new materials with targeted properties by an artificial neural network (ANN) constructed from existing structure-property databases. This approach has not been applicable to tangible materials, such as plastic composites, fabrics, and rubbers, because the complexities of their structures cannot be defined. Here we propose a deep learning computational framework that can implement “virtual” experiments on tangible materials (carbon nanotube (CNT) films) where structural representations (scanning electron microscope images at 4 levels of magnifications (x2k, x20k, x50k, x100k)) of the processed material (dispersing and filtering) were created by multiple generative adversarial networks from which an ANN predicted multiple properties (electrical conductivity and specific surface area). 1865 virtual experiments were finished within an hour, a task that would take years for real experiments. The accumulated data can be used as a versatile database for material science, in analogous to databases of molecules and solids used in cheminformatics, as exemplified by investigations of the correlation between the electrical conductivity and specific surface area, wall number phase diagrams, the most economical mixture of CNTs at specific property, and inversely designed CNT supercapacitors.


Author(s):  
T. Hirayama ◽  
Q. Ru ◽  
T. Tanji ◽  
A. Tonomura

The observation of small magnetic materials is one of the most important applications of electron holography to material science, because interferometry by means of electron holography can directly visualize magnetic flux lines in a very small area. To observe magnetic structures by transmission electron microscopy it is important to control the magnetic field applied to the specimen in order to prevent it from changing its magnetic state. The easiest method is tuming off the objective lens current and focusing with the first intermediate lens. The other method is using a low magnetic-field lens, where the specimen is set above the lens gap.Figure 1 shows an interference micrograph of an isolated particle of barium ferrite on a thin carbon film observed from approximately [111]. A hologram of this particle was recorded by the transmission electron microscope, Hitachi HF-2000, equipped with an electron biprism. The phase distribution of the object electron wave was reconstructed digitally by the Fourier transform method and converted to the interference micrograph Fig 1.


Author(s):  
Stellan Ohlsson
Keyword(s):  

2019 ◽  
Vol 53 (3) ◽  
pp. 281-294
Author(s):  
Jean-Michel Foucart ◽  
Augustin Chavanne ◽  
Jérôme Bourriau

Nombreux sont les apports envisagés de l’Intelligence Artificielle (IA) en médecine. En orthodontie, plusieurs solutions automatisées sont disponibles depuis quelques années en imagerie par rayons X (analyse céphalométrique automatisée, analyse automatisée des voies aériennes) ou depuis quelques mois (analyse automatique des modèles numériques, set-up automatisé; CS Model +, Carestream Dental™). L’objectif de cette étude, en deux parties, est d’évaluer la fiabilité de l’analyse automatisée des modèles tant au niveau de leur numérisation que de leur segmentation. La comparaison des résultats d’analyse des modèles obtenus automatiquement et par l’intermédiaire de plusieurs orthodontistes démontre la fiabilité de l’analyse automatique; l’erreur de mesure oscillant, in fine, entre 0,08 et 1,04 mm, ce qui est non significatif et comparable avec les erreurs de mesures inter-observateurs rapportées dans la littérature. Ces résultats ouvrent ainsi de nouvelles perspectives quand à l’apport de l’IA en Orthodontie qui, basée sur le deep learning et le big data, devrait permettre, à moyen terme, d’évoluer vers une orthodontie plus préventive et plus prédictive.


2020 ◽  
Author(s):  
L Pennig ◽  
L Lourenco Caldeira ◽  
C Hoyer ◽  
L Görtz ◽  
R Shahzad ◽  
...  
Keyword(s):  

2020 ◽  
Author(s):  
A Heinrich ◽  
M Engler ◽  
D Dachoua ◽  
U Teichgräber ◽  
F Güttler
Keyword(s):  

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