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SUMMARY:The role played by interactions in the assembly of active colloids
  - Chantal Valeriani (Univ Complutense Madrid)
DTSTART:20190618T120000Z
DTEND:20190618T130000Z
UID:TALK116314@talks.cam.ac.uk
CONTACT:Professor Mike Cates
DESCRIPTION:Active matter systems are composed of constituents that consum
 e energy in order to move or exert mechanical forces\, constantly driving 
 themselves away from equilibrium [1]. Examples of active particles are liv
 ing\, such as bacteria\, or artificial\, such as active colloids [2\,3].\n
 \nExperiments on spherical man-made self-propelled colloids have shown tha
 t active particles present interesting emergent collective properties [4
 –6]\, such\nas motility-induced phase separation (MIPS)\, involving spon
 taneous assembly of particles due to the persistence of their direction of
  motion [7]. An example of colloids undergoing MIPS under suitable conditi
 ons are Active Brownian Particles (ABP)\, i.e. self-propelled Brownian par
 ticles interacting with each other via a purely repulsive potential [8].\n
 \nIn order to design novel functional materials\, one might need to gain c
 ontrol on the self-assembly process of active colloids. With this goal in 
 mind\, we have explored the competition between activity and a broad range
  of interactions between active colloids\, ranging from isotropic (strongl
 y repulsive [9\,15\,17]\, attractive [10\,11]\, micelle-inducing [12]) to 
 anisotropic (Janus-like [13])\, unravelling the relevance of hydrodynamics
  [11\,14\,16].\n\n\n\nREFERENCES\n\n[1] C. Bechinger et al. Rev. Mod. Phys
 . 88\, 045006 (2016).\n\n[2] W.F. Paxton et al. Chem. Commun. 441\, 3 (200
 5).\n\n[3] S. Fournier-Bidoz et al. J. Am. Chem. Soc. 126\, 13424 (2004).\
 n\n[4] S. Thutupalli\, R. Seemann\, S. Herminghaus New J. Phys. 13\, 07302
 1 (2011).\n\n[5] D. Nishiguchi\, Masaki S. Phys. Rev. E 92\, 052309 (2015)
 .\n\n[6] I. Buttinoni\, J. Bialké\, F. Kümmel\, H. Löwen\, C. Bechinger
 \, T. Speck.\n\nPhys.Rev. Lett. 110\, 238301 (2013).\n\n[7] M.E. Cates\, J
 . Tailleur. Annu. Rev. of Condens. M3tt. Phys. 6\, pp. 219-244\n\n(2015).\
 n\n[8] S.Mallory\, C.Valeriani and A.Cacciuto Annual review of Physical Ch
 emistry\,\n\n69 59 (2018)\n\n[9] Diego Rogel Rodriguez\, Francisco Alarcon
 \, Raul Martinez\, Jorge Ramirez\,\n\nand Chantal Valeriani\, in preparati
 on (2018)\n\n[10] B. Mognetti\, A. Saric\, S. Angioletti-Uberti\, A. Cacci
 uto\, C. Valeriani and D.\n\nFrenkel Phys.Rev.Lett.\, 111 245702 (2013)\n\
 n[11] F.Alarcon\, C.Valeriani and I.Pagonabarraga Soft Matter 10.1039/\n\n
 C6SM01752E (2017)\n\n[12] C.Tung\, J.Harder\, C.Valeriani and A.Cacciuto\,
  Soft Matter 12 555 (2016)\n\n[13] S.Mallory\, F.Alarcon\, A.Cacciuto and 
 C.Valeriani New Journal of Physics\n\n(2017)\n\n[14] F.Alarcon\, E.Navarro
 \, C.Valeriani and I.Pagonabarraga\, PRE in press\n\n(2019)\n\n[15] J.Hard
 er\, S.Mallory\, C.Tung\, C.Valeriani and A.Cacciuto\, J.Chem.Phys. 141\n\
 n194901 (2014)\n\n[16] R.Martinez\, F.Alarcon\, D.R.Rodiguez\, J.L.Aragone
 s and C.Valeriani\, EPJE\n\n41 91 (2018)\n\n[17] Diego Rogel Rodriguez\, F
 rancisco Alarcon\, Raul Martinez\, Jorge Ramirez\,\n\nand Chantal Valerian
 i\, in preparation (2019)\n\n\n\n
LOCATION:MR11\, CMS
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