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PRODID:-//Memento EPFL//
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SUMMARY:CECAM workshop: "Mesoscale modelling of driven disordered material
 s: From glasses to active matter"
DTSTART:20230524T085000
DTEND:20230526T171500
DTSTAMP:20260510T105126Z
UID:e8a9646534bb8f913e68648c8e17d9d9d14d3b171483328bbe1c4e0b
CATEGORIES:Conferences - Seminars
DESCRIPTION:You can apply to participate and find all the relevant informa
 tion (speakers\, abstracts\, program\,...) on the event website: https://
 www.cecam.org/workshop-details/1206\nRegistration for this workshop is for
 mally closed. Please get in touch with the organizers directly if you woul
 d like to discuss participation.\n\nDESCRIPTION\nAmorphous materials are u
 biquitous around us\, encompassing for instance colloids\, emulsions\, foa
 ms\, granular matter and metallic glasses\, as well as confluent biologica
 l tissues. These materials are seemingly very different from each other\, 
 as the size of their constituent particles ranges from nanometers (e.g. me
 tallic glasses) to millimeters (e.g. grains) with very dissimilar particle
  interactions. Nevertheless\, they exhibit common features under external 
 forces or self-propulsion\, showing universal non-equilibrium behaviours s
 uch as localised plastic rearrangements\, collective or avalanche-type mot
 ion\, or the emergence of shear bands. These remarkable observations natur
 ally led researchers to search for a unified description of driven amorpho
 us materials\, particularly at a mesoscopic scale where microscopic detail
 s become irrelevant [1\,2].\nIt is now well established that the mechanica
 l response of amorphous solids under loading proceeds from local and irrev
 ersible rearrangements\, resetting disorder locally and generating a highl
 y non-trivial mechanical noise [1\,2]. These plastic events were first ide
 ntified by Argon [3] and later on coined as shear transformation zones (ST
 Zs) [4]. They play a central role in mechanical and rheological properties
 \, providing us with the key building blocks for various theoretical descr
 iptions\, such as STZ theory [4] and elasto-plastic models (EPMs) [2]. The
  development of these effective descriptions has been tightly related to a
 dvances on other non-equilibrium statistical physics phenomena\, such as t
 he depinning transition [5\,6] and ferromagnets in random fields [7]. Rece
 nt advances in stochastic processes\, such as random resetting\, could pro
 vide useful theoretical tools to refine these descriptions [8]. In this co
 ntext\, understanding the nature of the noise and the characterisation of 
 local disorder is becoming one of the forefront of numerous works\, partic
 ularly for dense active matter [9] where classical equilibrium concepts ar
 e challenged.\nOn the numerical front\, spatio-temporal scales accessible 
 by molecular dynamics are limited. Thus atomistic simulations have been co
 mplemented by discrete mesoscopic approaches\, allowing to reproduce the r
 esponse of driven amorphous materials while considerably reducing the numb
 er of degrees of freedom to be processed [2]. EPMs consider a discrete pop
 ulation of STZs triggered in an elastic medium\, and can be seen as a mech
 anical analogue of an Ising model where local plastic deformation and elas
 tic propagator correspond respectively to spin and interaction between the
  sites. Many versions of coarse-grained\, mesoscopic modellings  with dif
 ferent ingredients have been devised to investigate the collective organis
 ation of STZs\, either spatially-resolved [2\,10] or effectively mean-fiel
 d [11]\, to explore various mechanisms (e.g. avalanches\, shear bands [12]
 ) and rheological settings (e.g. stationary\, transient regimes\, oscillat
 ory protocols [13\,14]). Furthermore\, recent studies focused on the deta
 iled calibration of these mesoscopic models using microscopic information 
 obtained by molecular simulations [16\,17]. This multiscale-modelling appr
 oach\, mapping from molecular simulations to mesoscopic models\, paves the
  way to construct more realistic modelling\, also by applying them to expe
 rimental systems such as colloids and granular materials [18\,19]. Such me
 soscopic modelling is also becoming paramount for dense active matter\, by
  relying on connections with driven yet passive amorphous materials within
  a unified framework [20].\n\nReference\n[1] D. Rodney\, A. Tanguy\, D. Va
 ndembroucq\, Modelling Simul. Mater. Sci. Eng.\, 19\, 083001 (2011)\n[2] 
 A. Nicolas\, E. Ferrero\, K. Martens\, J. Barrat\, Rev. Mod. Phys.\, 90\,
  045006 (2018)\n[3] A. Argon\, H. Kuo\, Materials Science and Engineering\
 , 39\, 101-109 (1979)\n[4] M. Falk\, J. Langer\, Phys. Rev. E\, 57\, 719
 2-7205 (1998)\n[5] J. Lin\, E. Lerner\, A. Rosso\, M. Wyart\, Proc. Natl. 
 Acad. Sci. U.S.A.\, 111\, 14382-14387 (2014)\n[6] B. Tyukodi\, S. Patinet
 \, S. Roux\, D. Vandembroucq\, Phys. Rev. E\, 93\, 063005 (2016)\n[7] G. 
 Biroli\, C. Cammarota\, G. Tarjus\, M. Tarzia\, Phys. Rev. B\, 98\, 17420
 6 (2018)\n[8] M. Evans\, S. Majumdar\, G. Schehr\, J. Phys. A: Math. Theor
 .\, 53\, 193001 (2020)\n[9] L. Berthier\, E. Flenner\, G. Szamel\, J. Che
 m. Phys.\, 150\, 200901 (2019)\n[10] Ge Zhang\, Hongyi Xiao\, Entao Yang\
 , Robert J. S. Ivancic\, Sean A. Ridout\, Robert A. Riggleman\, Douglas J.
  Durian\, and Andrea J. Liu\,\nPhys. Rev. Research\, 4\, 043026 (2020)\n[
 11] E. Agoritsas\, E. Bertin\, K. Martens\, J. Barrat\, Eur. Phys. J. E\,
  38\, 71 (2015)\n[12] H. Barlow\, J. Cochran\, S. Fielding\, Phys. Rev. L
 ett.\, 125\, 168003 (2020)\n[13] M. Mungan\, S. Sastry\, Phys. Rev. Lett.
 \, 127\, 248002 (2021)\n[14] J. Parley\, S. Sastry\, P. Sollich\, Phys. R
 ev. Lett.\, 128\, 198001 (2022)\n[15] H. Borja da Rocha\, L. Truskinovsky
 \, Phys. Rev. Lett.\, 124\, 015501 (2020)\n[16] D. Fernández Castellanos
 \, S. Roux\, S. Patinet\, Comptes Rendus. Physique\, 22\, 135-162 (2021)\
 n[17] C. Liu\, S. Dutta\, P. Chaudhuri\, K. Martens\, Phys. Rev. Lett.\, 
 126\, 138005 (2021)\n[18] O. Dauchot\, G. Marty\, G. Biroli\, Phys. Rev. L
 ett.\, 95\, 265701 (2005)\n[19] P. Schall\, D. Weitz\, F. Spaepen\, Scien
 ce\, 318\, 1895-1899 (2007)\n[20] P. Morse\, S. Roy\, E. Agoritsas\, E. S
 tanifer\, E. Corwin\, M. Manning\, Proc. Natl. Acad. Sci. U.S.A.\, 118\, 
 (2021)
LOCATION:BCH 2103 https://plan.epfl.ch/?room==BCH%202103
STATUS:CONFIRMED
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