Martin Genet, Professor @ École Polytechnique https://mgenet.github.io/news.html Martin Genet, Professor @ École Polytechnique quarto-1.9.38 Mon, 01 Jun 2026 00:00:00 GMT Winter/Spring 2026 US Seminar Tour https://mgenet.github.io/posts/2026/2026-06-02 - US Tour 2026/ In the past couple of months I have had the chance to give seminars —entitled “Toward pulmonary digital twins: recent efforts in multiscale lung poromechanical modeling, motion tracking and parameter estimation using the equilibrium gap, model reduction using finite element neural networks”— in various universities across the East Coast and Midwest:

Michigan State University, home of the Spartans!
  • Lehigh University, Mechanical Engineering Department, hosted by Natasha Vermaak

Lehigh University, one of the birthplaces of modern fracture mechanics, and such a beautiful campus!

Former Bethlehem Steel factory near campus, which produced parts of the Golden Gate Bridge, the Chrysler Building, the Empire State Building, Madison Square Garden, Alcatraz and the Hoover Dam!

Each seminar was an occasion to share my work, get great feedback, meet old friends, make new connections, engage with the next generation—what a human and scientific blast!

]]> News https://mgenet.github.io/posts/2026/2026-06-02 - US Tour 2026/ Mon, 01 Jun 2026 00:00:00 GMT CSMA2026 (plenary talk!) https://mgenet.github.io/posts/2026/2026-05-22 - CSMA2026/ This week we attended the 17th national workshop on computational mechanics (my favorite conference!) in Giens (one of my favorite places places in the World!):

  • I gave a plenary talk (!), introduced by Djimedo Kondo (!!), on “Multiscale modeling, simulation and estimation of pulmonary poromechanics”.

Can’t wait for CSMA 2028!

]]> News https://mgenet.github.io/posts/2026/2026-05-22 - CSMA2026/ Fri, 22 May 2026 00:00:00 GMT New paper on the virtual fields method https://mgenet.github.io/posts/2026/2026-05-04 - new-paper-on-the-virtual-fields-method/ Nagham Chibli, Sébastien Imperial and I just published a paper in Comptes Rendus Mécanique entitled “A class of optimal virtual fields for inverse problems in elasticity”, cf. https://doi.org/10.5802/crmeca.361).

All computations from the paper are easily reproducible at https://github.com/nchibli/Optimal-Virtual-Fields-Paper-Demos, so do not hesitate to give it a try, and let us know how it goes!

]]> News https://mgenet.github.io/posts/2026/2026-05-04 - new-paper-on-the-virtual-fields-method/ Mon, 04 May 2026 00:00:00 GMT France Culture! https://mgenet.github.io/posts/2026/2026-03-31 - France Culture/ Today Alexandre Daby-Seesaram (former postdoc in the team, who just started as an Assistant Professor at ENSTA) talked about our efforts toward pulmonary digital twins on French National Radio during an interview on Guillaume Erner’s show “Les chantiers de la recherche”—one of my favorite radio shows, which I highly recommend to all French speakers out there!

Here is the link to the replay: https://www.radiofrance.fr/franceculture/podcasts/les-chantiers-de-la-recherche/a-quoi-servent-les-jumeaux-numeriques-dans-la-sante-4006852

Thanks to Alexandre for his flawless pedagogy, and to Guillaume Erner & Juliette Devaux for bringing real science to France Culture’s morning show every day!

]]> News https://mgenet.github.io/posts/2026/2026-03-31 - France Culture/ Tue, 31 Mar 2026 00:00:00 GMT New York! https://mgenet.github.io/posts/2026/2026-01-05 - New York/ For the next six month I will be a Visiting Professor at Columbia, hosted by Gerard Ateshian as well as Kristin Myers and Adrian Buganza Tepole through the Alliance Program. I will be giving introductory seminars in various group meetings through January, and a full seminar at the Mechanical Engineering Department in February. I will also take part in various teaching activities (notably Gerard Ateshian’s “Mixture theories for biological tissues” class), as well as organize dissemination events with local schools. This is such a perfect opportunity to share our recent results, learn new topics, and make new connections—very much looking forward to it!

The Low Memorial Library and Alma Mater Statue

The Butler Library

A motivational poster for Engineering

Manhattan skyline from Central Park
]]> News https://mgenet.github.io/posts/2026/2026-01-05 - New York/ Mon, 05 Jan 2026 00:00:00 GMT New paper on pulmonary micro-poro-mechanics https://mgenet.github.io/posts/2025/2025-11-14 - new-paper-on-lung-micro-poro-mechanics/ Mahdi Manoochehrtayebi, Aline Bel-Brunon and I just published a paper in the Journal of Biomechanical Engineering entitled “Micro-Poro-Mechanical Modeling of the Lung Parenchyma: Theoretical Modeling and Parameters Identification”, cf. https://doi.org/10.1115/1.4070036 (editor shared link, HAL repository, preprint).

It is an extension of our recent paper [Manoochehrtayebi, Bel-Brunon & Genet (2025). Finite strain micro-poro-mechanics: Formulation and compared analysis with macro-poro-mechanics. International Journal of Solids and Structures, 317, 113354.], where we specify the micro-model for the lung parenchyma, including (strain- and history-dependent) surface tension, and identifying material parameters based on experimental data from the literature.

All computations from the paper (which are based on the dolfin_mech FEniCS-based library) are easily reproducible at https://manoochtayebi.github.io/Lung-micro-poro-paper-demos, so do not hesitate to give it a try, and let us know how it goes!

]]> News https://mgenet.github.io/posts/2025/2025-11-14 - new-paper-on-lung-micro-poro-mechanics/ Fri, 14 Nov 2025 00:00:00 GMT Uruguay! https://mgenet.github.io/posts/2025/2025-11-03 - Uruguay/ This month I will be a Visiting Professor at the French-Uruguayan Institute for Mathematics and Interactions (IFUMI), a mixed entity of the Universidad de la República Uruguay (UdelaR) and CNRS, hosted by Franz Chouly. This week (06/11) I will give a seminar (Toward pulmonary digital twins: recent efforts in motion tracking using mechanical regularization, lung poromechanical modeling and estimation, model reduction using finite element neural networks) at the Facultad de Ciencias & Facultad de Ingeniería, and later this month (20/11) I will give a general audience seminar (Mechanics of the heart and lungs—a tale of modeling, computing and learning) at the University. Very much looking forward to it!

Facultad de Ciencias

Facultad de Ingeniería (an architectural “landmark”)

Right behind the Facultad de Ingeniería

General public seminar announcement

General public seminar

Sunset over Montevideo
]]> News https://mgenet.github.io/posts/2025/2025-11-03 - Uruguay/ Mon, 03 Nov 2025 00:00:00 GMT ICCB 2025 https://mgenet.github.io/posts/2025/2025-09-10 - ICCB/ This week we attended the 11th International Conference on Computational Bioengineering (ICCB 2025) in Rome:

  • Kateřina Škardová gave the keynote of the “Multiscale biophysical systems. New trends on theoretical and computational modelling” minisymposium, entitled “Finite element neural network interpolation: Interpretable and adaptive discretization for solving PDEs”;

  • Alexandre Daby-Seesaram presented his work on “Digital twin of human lungs: towards real-time simulation and registration of soft organs”;

Felipe Álvarez-Barrientos & Haotian Xiao also attended the meeting, as well as our colleagues from LMS Julien Bonnafé & Jean-Marc Allain who work on the cornea, and our colleague from BioMaps Quentin Herszkowicz with who we collaborate on the lung (V|LF-Spiro3D EIC project).

Such a nice conference—thanks to Alessio Gizzi and his team for the perfect organization, and to all speakers of the “respiratory” minisymposium!

]]> News https://mgenet.github.io/posts/2025/2025-09-10 - ICCB/ Wed, 10 Sep 2025 00:00:00 GMT Finite Element Neural Network preprints are out! https://mgenet.github.io/posts/2025/2025-09-05 - finite-element-neural-network-preprints-are-out/ Kateřina Škardová, Alexandre Daby-Seesaram and I just published two companion papers in Computational Mechanics entitled “Finite Element Neural Network Interpolation: I - Interpretable and Adaptive Discretization for Solving PDEs” (DOI: https://doi.org/10.1007/s00466-025-02677-3; ArXiv DOI: https://doi.org/10.48550/arXiv.2412.05719) and “Finite Element Neural Network Interpolation: II - Hybridization with the Proper Generalized Decomposition for non-linear surrogate modelling” (DOI: https://doi.org/10.1007/s00466-025-02676-4; ArXiv DOI: https://doi.org/10.48550/arXiv.2412.05714).

We implemented our framework in a library called NeuROM, which is freely available, and as usual now we also publish jupyter notebooks to allow reproduction of the figures of the papers: Part I and Part II.

Definitely let us know if you are interested and want to collaborate on these topics!

]]> News https://mgenet.github.io/posts/2025/2025-09-05 - finite-element-neural-network-preprints-are-out/ Fri, 05 Sep 2025 00:00:00 GMT New paper on Inverse Uncertainty Quantification https://mgenet.github.io/posts/2025/2025-06-18 - new-paper-on-inverse-uncertainty-quantification/ Alice Peyraut and I just published a paper in the Journal of Biomechanical Engineering (a journal of the American Society of Mechanical Engineers, ASME), entitled “Inverse Uncertainty Quantification for Personalized Biomechanical Modeling: Application to Pulmonary Poromechanical Digital Twins”, cf. https://doi.org/10.1115/1.4068578 (HAL repository: https://hal.science/hal-05118573).

All computations from the paper (which rely on the dolfin_mech FEniCS-based library and the dolfin_estim FEniCS-based library) are easily reproducible at https://alicepeyraut.github.io/uncertainty-quantification-paper-demos-github, so do not hesitate to give it a try, and let us know how it goes!

]]> News https://mgenet.github.io/posts/2025/2025-06-18 - new-paper-on-inverse-uncertainty-quantification/ Wed, 18 Jun 2025 00:00:00 GMT Texas! https://mgenet.github.io/posts/2025/2025-05-25 - Texas/ For the next two weeks I will be a Visiting Professor at the University of Texas Southwestern (UTSW) Medical Center in Dallas, invited by Radomir Chabiniok and Tarique Hussain. This week I will give seminars at the Heart Center (Pediatric Cardiology and Cardiothoracic Surgery Divisions) and Pulmonary & Critical Care Medicine (Internal Medicine Department), and next week I will attend the 13th Functional Imaging and Modeling of the Heart (FIMH) Conference. It will also be an occasion to visit colleagues at the University of Texas at Austin (UTA) and Oden Institute for Computational Mechanics, notably Adam Bush, Chad Landis and Michael Sacks. Very much looking forward to it!

]]> News https://mgenet.github.io/posts/2025/2025-05-25 - Texas/ Sun, 25 May 2025 00:00:00 GMT New paper on micro-poro-mechanics https://mgenet.github.io/posts/2025/2025-05-06 - new-paper-on-micro-poro-mechanics/ Mahdi Manoochehrtayebi, Aline Bel-Brunon and I just published a paper in the International Journal of Solids and Structures entitled “Finite strain micro-poro-mechanics: formulation and compared analysis with macro-poro-mechanics”, cf. https://doi.org/10.1016/j.ijsolstr.2025.113354 (editor shared link, HAL repository).

All computations from the paper (which are based on the dolfin_mech FEniCS-based library) are easily reproducible at https://mgenet.github.io/Micro-Macro-Poro-paper-demos, so do not hesitate to give it a try, and let us know how it goes!

]]> News https://mgenet.github.io/posts/2025/2025-05-06 - new-paper-on-micro-poro-mechanics/ Tue, 06 May 2025 00:00:00 GMT Seminar @ School of Mathematics and Statistics, University of Glasgow https://mgenet.github.io/posts/2025/2025-03-27 - Glasgow Seminar/ Today I gave a seminar at the School of Mathematics and Statistics of the University of Glasgow, entitled “Toward pulmonary digital twins: recent efforts in motion tracking using mechanical regularization, lung poromechanical modeling and estimation, model reduction using finite element neural networks”. I had the chance to meet many people from the SofTMech “Mathematics for Healthcare” Center (notably Profs. Nicholas Hill & Hao Gao and some of their students), and learn about the excellent work they are doing, notably on cardiac perfusion modeling and simulation, which could very well be useful for our lung perfusion modeling efforts.

]]> News https://mgenet.github.io/posts/2025/2025-03-27 - Glasgow Seminar/ Thu, 27 Mar 2025 00:00:00 GMT BMMB Editorial Board https://mgenet.github.io/posts/2025/2025-03-24 - BMMB/ I was invited by Gerhard Holzapfel & David Nordsletten (Editors-in-Chief) to be part of the Editorial Board of the Biomechanics and Modeling in Mechanobiology (BMMB) journal, cf. https://link.springer.com/journal/10237/editorial-board. I think this is a very good journal, and I am very happy to be a part of it!

]]> News https://mgenet.github.io/posts/2025/2025-03-24 - BMMB/ Mon, 24 Mar 2025 00:00:00 GMT Kick Off Meeting FHU Cournand https://mgenet.github.io/posts/2025/2025-03-12 - FHU Cournand/ Today was the kick off meeting of the FHU (Fédération Hospitalo-Universitaire, i.e., University Hospital Federation) André Cournand (French-American physician and physiologist, Nobel Prize in Physiology and Medicine in 1956 for the development of cardiac catheterization) “Transforming Pulmonary Vascular Medicine”.

The FHU, lead by David Montani & Laurent Savale, is built upon the world-leading Paris-Saclay University/INSERM/APHP “Pulmonary hypertension: Pathophysiology and therapeutic innovation” research unit lead by Marc Humbert, and aims at establishing “a robust network of clinical teams, basic and translational multidisciplinary research laboratories, engineering teams and platforms to confront emerging challenges in the field of pulmonary vascular diseases”.

As a co-leader of the “Biomarkers and Modeling Pulmonary Vascular Diseases” work package of the FHU, I gave a short presentation on our current efforts on lung mechanical modeling, and our plan for modeling pulmonary circulation, notably in the context of Haotian Xiao’s PhD. The other presentations were all super impressive, and I am looking forward to see this federation in action!

]]> News https://mgenet.github.io/posts/2025/2025-03-12 - FHU Cournand/ Wed, 12 Mar 2025 00:00:00 GMT DTE & AICOMAS 2025 https://mgenet.github.io/posts/2025/2025-02-21 - DTE-AICOMAS/ This week we attended the 3rd IACM Digital Twins in Engineering Conference (DTE 2025) & 1st ECCOMAS Artificial Intelligence and Computational Methods in Applied Science (AICOMAS 2025) in Paris:

]]> News https://mgenet.github.io/posts/2025/2025-02-21 - DTE-AICOMAS/ Fri, 21 Feb 2025 00:00:00 GMT New review paper on lung poromechanical modeling for clinical application https://mgenet.github.io/posts/2025/2025-02-10 - expert-review/ Ever wondered “What is personalized lung poromechanical modeling and how can it improve the understanding and management of fibrotic interstitial lung diseases?” This is the question the Editor of Expert Review of Respiratory Medicine asked my colleague Dr. Pierre-Yves Brillet. And this is our best attempt at answering the question: [Brillet, Peyraut, Bernaudin, Fetita, Nunes & Genet, 2025, Expert Review of Respiratory Medicine].

]]> News https://mgenet.github.io/posts/2025/2025-02-10 - expert-review/ Mon, 10 Feb 2025 00:00:00 GMT New paper on direct model parameter identification https://mgenet.github.io/posts/2025/2025-01-22 - new-paper-on-direct-estimation/ Did you ever dream of identifying model parameters from images without running the model itself? This is possible!

Alice Peyraut and I just published a paper in Comptes Rendus Mécanique, where we use the finite strain formulation of the equilibrium gap principle (introduced in [Genet, 2024, C. R. Mécanique], cf. dedicated post) to perform direct (i.e., without evaluating the model itself) estimation of model (material and/or loading) parameters from full field measurements. The method is a priori highly sensitive to noise, but we showed that using the equilibrium gap as regularizer for motion tracking allows to extract displacement fields from dynamic images that are robust enough to be used for direct parameter estimation. All the details are in the paper: [Peyraut & Genet, 2025, C. R. Mécanique].

All computations from the paper (which are based on the dolfin_warp FEniCS+VTK-based library and the dolfin_estim FEniCS-based library) are easily reproducible at https://apeyraut.gitlabpages.inria.fr/identification-methods-paper-demos, so do not hesitate to give it a try, and let us know how it goes!

]]> News https://mgenet.github.io/posts/2025/2025-01-22 - new-paper-on-direct-estimation/ Wed, 22 Jan 2025 00:00:00 GMT New review paper on digital twins for chronic lung diseases https://mgenet.github.io/posts/2024/2024-12-20 - new-review-paper-on-digital-twins/ Together with Apolline Gonsard (University Hospital Necker-Enfants Malades) & David Drummond (University Hospital Necker-Enfants Malades/Université Paris Cité/INSERM/INRIA), we just published a review paper on “Digital twins for chronic lung diseases” in European Respiratory Review, cf. https://doi.org/10.1183/16000617.0159-2024.

]]> News https://mgenet.github.io/posts/2024/2024-12-20 - new-review-paper-on-digital-twins/ Fri, 20 Dec 2024 00:00:00 GMT Alice Peyraut defends her PhD thesis https://mgenet.github.io/posts/2024/2024-12-19 - alice-peyraut-defends-her-phd-thesis/ Today Alice Peyraut successfully defended her PhD thesis! Jury was composed of:

Congrats Alice and best wishes for the future!!

]]> News https://mgenet.github.io/posts/2024/2024-12-19 - alice-peyraut-defends-her-phd-thesis/ Thu, 19 Dec 2024 00:00:00 GMT