Laurent J. Lewis
- Professeur émérite
-
Faculté des arts et des sciences - Département de physique
Complexe des sciences office B-4411
Web : Google Scholar
Affiliations
- Directeur – groFNUM — Groupe de physique numérique des matériaux
Areas of Expertise
- Numerical simulation
- Materials science
- Computational techniques, simulation
- Amorphous semiconductors, metals, and alloys
- Disordered solids
- Glasses
- Laser-beam impact phenomena
- Molecular dynamics and particle methods
- Nanoscale materials and structures: fabrication and characterization
- Thermal properties of small particles, nanocrystals, nanotubes and other related systems
My research program examines the general theme of computational physics of materials. We use powerful computers to probe the structural and other behaviour and properties of materials, and the "structure-function" relationship. Our preferred approach is molecular dynamics, which involves integrating the equations of motion of a system of atoms under the effect of forces from "potentials"; they may be generic (Lennard-Jones, for instance), empirical or semi-empirical, or even ab initio. The size of the systems depends on the potential used and varies from tens or hundreds of atoms to several million.
We study a vast range of problems, but we are particularly interested in the following ones, just as an example: (i) laser ablation and laser-material interactions; in this case we are trying to understand how matter reacts to powerful, short laser pulses - ejection mechanisms, structural modifications of the target, properties of the ablation plume, etc. (ii) disordered, amorphous or vitreous materials; in this field, we are trying to understand the short-, medium- and long-term structure of materials like amorphous silicon, metallic glass, etc. (iii) thermal properties of nanoscopic materials; we are trying to determine how heat dissipates near nanometric structures and how it moves in molecular junctions between nanoparticles, in particular.
Responsabilities and outreach Expand all Collapse all
Student supervision Expand all Collapse all
Cycle : Master's
Grade : M. Sc.
Research projects Expand all Collapse all
Regroupement québécois sur les matériaux de pointe ( RQMP ) Projet de recherche au Canada / 2019 - 2024
FEI Sans Restriction ISM2 de Calcul Canada/Calcul Québec Projet de recherche au Canada / 2017 - 2024
Contribution complémentaire 2015-2016 pour le financement de Calcul-Québec Projet de recherche au Canada / 2015 - 2023
Contribution complémentaire pour le financement de Calcul-Québec Projet de recherche au Canada / 2015 - 2023
CALCUL QUEBEC Projet de recherche au Canada / 2015 - 2023
Compute Canada MSI 2.0 Projet de recherche au Canada / 2017 - 2022
PORTION SALAIRE-NSERC/Hydro-Québec Industrial Chair in Phytotechnology Projet de recherche au Canada / 2016 - 2022
PHYSICAL PROPERTIES OF MATERIALS AT THE NANOSCALE Projet de recherche au Canada / 2015 - 2022
Contribution ponctuelle pour le financement de Calcul Québec Projet de recherche au Canada / 2018 - 2020
Convention de subvention 2018-2020 avec le MEI pour le soutien des activités de Calcul Québec Projet de recherche au Canada / 2018 - 2020
Convention de subvention 2016-2018 pour le soutien du MESI aux activités de Calcul Québec pour l'année 2017-2018 Projet de recherche au Canada / 2017 - 2018
Pôle d'Analyse et Visualisation de l'Information Climatique et Scientifique _PAVICS )programme Logiciels de recherche de CANARIE) Projet de recherche au Canada / 2016 - 2017
REGROUPEMENT QUEBECOIS SUR LES MATERIAUX DE POINTE - RQMP Projet de recherche au Canada / 2009 - 2016
REGROUPEMENT STRATEGIQUE - REGROUPEMENT QUEBECOIS SUR LES MATERIAUX DE POINTE (RQMP) Projet de recherche au Canada / 2009 - 2016
PHYSICAL PROPERTIES OF ADVANCES MATERIALS - FROM THE ATOM TO LARGE-SCALE STRUCTURES Projet de recherche au Canada / 1994 - 2016
FCI : FONDS D'EXPLOITATION DES INFRASTRUCTURES / RECHERCHE EN PHYSIQUE Projet de recherche au Canada / 2003 - 2015
Publications Expand all Collapse all
Laurent J. Lewis – Publications (depuis 2010)
Les noms soulignés sont ceux des étudiants et stagiaires postdoctoraux travaillant sous ma direction; conformément à la pratique dans mon domaine, leurs noms sont placés en premier. Certains étudiants étaient en codirection; dans la plupart des cas, j’assumais la tâche de « directeur principal ».
Names underlined are those of students or PDFs working under my supervision. As is normal practice in my field, their names are listed first. Some students were co-supervised; in most cases, I was the main supervisor.
Statistiques – Google Scholar (en date du 25 janvier 2022) : 6815 citations, indice h = 39
Articles dans des revues avec comité de lecture – Articles in peer-reviewed journals
Articles réguliers – Regular articles
1. M. Comin and L.J. Lewis, 2019, Deep-learning approach to the structure of amorphous silicon, Phys. Rev. B, 100, 094107/1-11.
2. M. Gill-Comeau and L.J. Lewis, 2018, Molecular dynamics study of relaxons in the Fermi-Pasta-Ulam-β model, Phys. Rev. B 97, 245413/1-11.
3. L. Harbour, D. Förster, M. W. C. Dharma-wardana, and L. J. Lewis, 2018, Dynamic structure factor, ion acoustic modes and equation of state of two-temperature warm dense aluminum, Phys. Rev. E. 97, 043210/1-10.
4. D. Förster and L.J. Lewis, 2018, Numerical study of double-pulse laser ablation in Al, Phys. Rev. B 97, 224301/1-17.
5. M.W.C. Dharma-wardana, D.D. Klug, L. Harbour, and L.J. Lewis, 2017, Isochoric, isobaric and ultrafast conductivities of aluminum, lithium and carbon in the warm dense matter regime, Phys. Rev. E 96, 053206/1-15.
6. L. Harbour, M.W.C. Dharma-wardana, D.D. Klug and L.J. Lewis, 2017, Equation of state, phonons, and lattice stability of ultra-fast warm dense matter, Phys. Rev. E 95, 043201/1-11.
7. L. Harbour, M.W.C. Dharma-wardana, D.D. Klug and L.J. Lewis, 2016, Pair potentials for warm dense matter and their application to x-ray Thomson scattering in aluminum and beryllium, Phys. Rev. E 94, 053211/1-11.
8. L. Harbour, M.W.C. Dharma-wardana, D.D. Klug and L.J. Lewis, 2015, Two-Temperature Pair Potentials and Phonon Spectra for Simple Metals in the Warm Dense Matter Regime, Contrib. Plasma Phys. 55, 144-151.
9. M. Gill-Comeau and L.J. Lewis, 2015, Heat conductivity in graphene and graphite, Phys. Rev. B, 92, 195404/1-13.
10. P. Dagenais, L.J. Lewis, and S. Roorda, 2015, Understanding subtle changes in medium-range order in amorphous silicon, J. Phys. Cond. Mat. 27, 295801/1-6.
11. P. Dagenais, L.J. Lewis, and S. Roorda, 2015, Dominant structural defects in amorphous silicon, J. Phys. Cond. Mat. 27, 345004/1-9.
12. S. Marinier and L.J. Lewis, 2015, Femtosecond laser ablation of CuxZr1-x bulk metallic glasses: a molecular-dynamics study, Phys. Rev. B 92, 184108.
13. N. Tsakiris, K.K. Anoop, G. Ausanio, M. Gill-Comeau, R. Bruzzese, S. Amoruso, and L.J. Lewis, 2014,Ultrashort laser ablation of bulk metallic targets: dynamics and size distribution of the generated nanoparticles, Journal of Applied Physics 115, 243301/1-10.
14. M. Gill-Comeau and L.J. Lewis, 2014, Cross-correlations between phonon modes in anharmonic oscillator chains: role in heat transport, Phys. Rev. E 89, 042114/1-10.
15. N. Tsakiris and L.J. Lewis, 2013, Phase diagram of aluminum from EAM potentials , Europhys. J. B 86,313/1-4.
16. J.-C. Pothier and L.J. Lewis, 2012, Molecular-dynamics study of the viscous to inertial crossover in nanodroplet coalescence, Phys. Rev. B 85, 115447/1-10.
17. M. Gill-Comeau and L.J. Lewis, 2011, Ultrashort-pulse laser ablation of nanocrystalline aluminum, Phys. Rev. B 84, 224110/1-16.
18. S. Merabia, J.-L. Barrat, and L.J. Lewis, 2011, Heat conduction across molecular junctions between nanoparticles, J. Chem. Phys 134, 234707/1-6.
19. A. Kerrache, N. Mousseau, L.J. Lewis, 2011, Crystallization of amorphous silicon induced by shear deformations, Phys. Rev. B 84, 014110/1-7.
20. A. Kerrache, N. Mousseau, L.J. Lewis, 2011, Amorphous silicon under mechanical shear deformations: shear velocity and temperature effects, Phys. Rev. B 83, 134122/1-10.
21. J.-C. Pothier, F. Schiettekatte, and L.J. Lewis, 2011 Damage in amorphous silicon following high-energy ion implantation: A molecular-dynamics study, Phys. Rev. B 83, 235206/1-9.
Lettres, notes et communications – Letters, notes and communications
98. M. Gill-Comeau and L.J. Lewis, 2015, On the importance of collective excitations for thermal transport in graphene, Appl. Phys. Lett. 106, 193104/1-4.
99. L.K. Béland, Y. Anahory, D. Smeets, M. Guihard, P. Brommer, J.-F. Joly, J.-C. Pothier, L.J. Lewis, N. Mousseau, and F. Schiettekatte, 2013, Replenish and relax: explaining logarithmic annealing in disordered materials, Phys. Rev. Lett. 111, 105502/1-5.
100. S. Roorda and L.J. Lewis, 2012, Comment on “The local structure of amorphous silicon”, Science 338, 1539.
Autres contributions avec comité de lecture – Other peer-reviewed contributions
Articles de synthèse – Review articles
129. L.J. Lewis, 2022, Fifty years of amorphous silicon models : the end of the story?, Journal of Non-Crystalline Solids 580, 121383/1-37.
130. L.J. Lewis and D. Perez, 2012, Computer models of laser ablation in liquids, invited review article (book chapter) for Laser Ablation in Liquids: Principles, Methods and Applications in Nanomaterials Preparation and Nanostructures Fabrication, edited by G. W. Yang, Pan Stanford Publishing, p. 111-155.
131. L.J. Lewis and D. Perez, 2010, Theory and simulation of laser ablation – from basic mechanisms to applications, invited review article (book chapter) for Laser Precision Microfabrication, edited by K. Sugioka, M. Meunier and A. Piqué, Springer, Berlin, Springer Series in Materials Science, vol. 135, p. 35-61.
Comptes rendus de conférence – Conference proceedings
138. L. Harbour, M.W.C. Dharma-wardana, D. Klug, L.J. Lewis, 2014, Two-temperature pair potentials and phonon spectra for simple metals in the warm dense matter regime, in preparation (Strongly-Coupled Coulomb Systems 2014 conference, Santa Fe, New Mexico, July 2014).
139. C. C. Chenard-Lemire, L.J. Lewis, and M. Meunier, 2012, Laser-induced Coulomb explosion in C and Si nanoclusters: the determining role of pulse duration, Appl. Surf. Sci. 258, 9404-9407 (Proceedings of E-MRS 2011).
Additional Information
- 24-10-2017 - Nominations au Vice-rectorat à la recherche, à la découverte, à la création et à l’innovation
- 21-12-2017 - L'Université de Montréal: une histoire de familles
- 09-02-1998 - Laurent J. Lewis invité par la Materials Research Society
- 12-03-2018 Il faut faire plus de place aux femmes en recherche
- 15-05-2019 L’Université de Montréal félicite ses chercheurs
- 17-01-2005 L'UNESCO fait de 2005 l'année internationale de la physique
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