FABRIZIO CAMERIN

Dottore di ricerca

ciclo: XXXIII



Titolo della tesi: Microgels at interfaces: from single-particle modeling to collective behavior

Colloids are micro- or nano-sized particles that are increasingly used as model system to address fundamental issues in soft matter science. Microgels in particular are characterized by a crosslinked polymer network which provide them an internal elasticity and deformability. Their colloid-polymer duality clearly emerges when such particles are adsorbed at fluid-fluid interfaces, where microgels retain a so-called fried-egg shape. Despite the great theoretical and applicative interest for this system, there are several aspects that still need to be explored and, among all, the connection between the properties and conformation of a single particle and their collective behavior. In this Thesis, we aim to shed light on this aspect complementing molecular dynamics simulations and experiments. We will move from the single-particle microgel modeling in explicit solvent in the bulk, building on a coarse-grained model for microgels which provide a realistic description of the internal polymeric architecture and swelling behavior. Once this is established, we transfer this knowledge to correctly mimic the effect of the surface tension, in order to reproduce the correct extended conformation of the particle at the interface. Furthermore, by computing their effective interaction potential, we demonstrate that microgels adsorbed at an interface behave like 2D elastic particles, following the two-dimensional Hertzian theory. The analysis of the dynamical properties evidences the presence of multiple reentrant dynamics phenomena where, by continuously increasing the particle density, microgels first arrest and then refluidify due to the high penetrability of their extended coronas. In particular, we prove that this behavior can be found for small and loosely crosslinked microgels in a range of experimentally accessible conditions. A final section is dedicated to the analysis of hollow microgels that, given their topology, adopt a single particle conformation at the interface which is radically different from that of standard microgels.

Produzione scientifica

11573/1617148 - 2022 - Soft colloids for complex interfacial assemblies
Camerin, F.; Zaccarelli, E. - 01a Articolo in rivista
rivista: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (National Academy of Sciences:2101 Constitution Avenue Northwest:Washington, DC 20418:(877)314-2253, (615)377-3322, EMAIL: subspnas@nas.edu, INTERNET: http://www.pnas.org, Fax: (615)377-0525) pp. - - issn: 0027-8424 - wos: WOS:000766918500003 (5) - scopus: 2-s2.0-85124173822 (4)

11573/1616554 - 2022 - Link between Morphology, Structure, and Interactions of Composite Microgels
Rivas-Barbosa, R.; Ruiz-Franco, J.; Lara-Pena, M. A.; Cardellini, J.; Licea-Claverie, A.; Camerin, F.; Zaccarelli, E.; Laurati, M. - 01a Articolo in rivista
rivista: MACROMOLECULES (American Chemical Society:1155 Sixteenth Street Northwest:Washington, DC 20036:(800)227-5558, (800)333-9511, Fax: (202)872-4615) pp. 1834-1843 - issn: 0024-9297 - wos: WOS:000772188000036 (7) - scopus: 2-s2.0-85125128163 (6)

11573/1573787 - 2021 - Two-step deswelling in the Volume Phase Transition of thermoresponsive microgels
Del Monte, G.; Truzzolillo, D.; Camerin, F.; Ninarello, A.; Chauveau, E.; Tavagnacco, L.; Gnan, N.; Rovigatti, L.; Sennato, S.; Zaccarelli, E. - 01a Articolo in rivista
rivista: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (National Academy of Sciences:2101 Constitution Avenue Northwest:Washington, DC 20418:(877)314-2253, (615)377-3322, EMAIL: subspnas@nas.edu, INTERNET: http://www.pnas.org, Fax: (615)377-0525) pp. e2109560118- - issn: 0027-8424 - wos: WOS:000705153400019 (20) - scopus: 2-s2.0-85114732807 (20)

11573/1615723 - 2021 - Dynamical properties of different models of elastic polymer rings: Confirming the link between deformation and fragility
Gnan, N.; Camerin, F.; Del Monte, G.; Ninarello, A.; Zaccarelli, E. - 01a Articolo in rivista
rivista: THE JOURNAL OF CHEMICAL PHYSICS (American Institute of Physics:2 Huntington Quadrangle, Suite 1NO1:Melville, NY 11747:(800)344-6902, (631)576-2287, EMAIL: subs@aip.org, INTERNET: http://www.aip.org, Fax: (516)349-9704) pp. 154901- - issn: 0021-9606 - wos: WOS:000640627700001 (1) - scopus: 2-s2.0-85104131125 (2)

11573/1567490 - 2021 - Effect of Internal Architecture on the Assembly of Soft Particles at Fluid Interfaces
Vialetto, J.; Camerin, F.; Grillo, F.; Ramakrishna, S. N.; Rovigatti, L.; Zaccarelli, E.; Isa, L. - 01a Articolo in rivista
rivista: ACS NANO (Washington, DC : American Chemical Society) pp. 13105-13117 - issn: 1936-0851 - wos: WOS:000693105500046 (28) - scopus: 2-s2.0-85113593170 (26)

11573/1435491 - 2020 - Microgels at interfaces behave as 2D elastic particles featuring reentrant dynamics
Camerin, F; Gnan, N; Ruiz-Franco, J; Ninarello, A; Rovigatti, L; Zaccarelli, E - 01a Articolo in rivista
rivista: PHYSICAL REVIEW. X (College Park, Md. : American Physical Society) pp. - - issn: 2160-3308 - wos: WOS:000548449300001 (40) - scopus: 2-s2.0-85092219625 (40)

11573/1475363 - 2020 - Charge affinity and solvent effects in numerical simulations of ionic microgels
Del Monte, Giovanni; Camerin, Fabrizio; Ninarello, Andrea; Gnan, Nicoletta; Rovigatti, Lorenzo; Zaccarelli, Emanuela - 01a Articolo in rivista
rivista: JOURNAL OF PHYSICS. CONDENSED MATTER (IOP Publishing Limited:Dirac House, Temple Back, Bristol BS1 6BE United Kingdom:011 44 117 9297481, EMAIL: custserv@iop.org, INTERNET: http://www.iop.org, Fax: 011 44 117 9294318) pp. - - issn: 0953-8984 - wos: WOS:000598694700001 (6) - scopus: 2-s2.0-85098241116 (7)

11573/1396075 - 2020 - Tuning the rheological behavior of colloidal gels through competing interactions
Ruiz-Franco, J.; Camerin, F.; Gnan, N.; Zaccarelli, E. - 01a Articolo in rivista
rivista: PHYSICAL REVIEW MATERIALS (American Physical Society) pp. - - issn: 2475-9953 - wos: WOS:000526800300003 (15) - scopus: 2-s2.0-85084657941 (12)

11573/1282916 - 2019 - Microgels adsorbed at liquid-liquid interfaces: insights from realistic modeling and experiments
Camerin, Fabrizio - 04d Abstract in atti di convegno
congresso: International Soft Matter Conference (Edimburgh; United Kingdom)
libro: International Soft Matter Conference - book of abstracts - ()

11573/1282931 - 2019 - Microgels adsorbed at liquid-liquid interfaces: simulations and experiments
Camerin, Fabrizio - 04d Abstract in atti di convegno
congresso: Material Research Society Spring Meeting (Phoenix; United States of America)
libro: Material Research Society Spring Meeting - book of abstracts - ()

11573/1268442 - 2019 - Microgels Adsorbed at Liquid-Liquid Interfaces: A Joint Numerical and Experimental Study
Camerin, Fabrizio; Fernández-Rodríguez, Miguel Ángel; Rovigatti, Lorenzo; Antonopoulou, Maria-Nefeli; Gnan, Nicoletta; Ninarello, Andrea; Isa, Lucio; Zaccarelli, Emanuela - 01a Articolo in rivista
rivista: ACS NANO (Washington, DC : American Chemical Society) pp. 4548-4559 - issn: 1936-0851 - wos: WOS:000466052900080 (80) - scopus: 2-s2.0-85063540390 (78)

11573/1325308 - 2019 - Numerical insights on ionic microgels. Structure and swelling behaviour
Del Monte, Giovanni; Andrea, Ninarello; Camerin, Fabrizio; Rovigatti, Lorenzo; Gnan, Nicoletta; Zaccarelli, Emanuela - 01a Articolo in rivista
rivista: SOFT MATTER (Cambridge : Royal Society of Chemistry, 2005-) pp. 8113-8128 - issn: 1744-683X - wos: WOS:000490786800011 (13) - scopus: 2-s2.0-85073234096 (13)

11573/1331780 - 2019 - Modeling Microgels with a Controlled Structure across the Volume Phase Transition
Ninarello, Andrea; Crassous, Jérôme J.; Paloli, Divya; Camerin, Fabrizio; Gnan, Nicoletta; Rovigatti, Lorenzo; Schurtenberger, Peter; Zaccarelli, Emanuela - 01a Articolo in rivista
rivista: MACROMOLECULES (American Chemical Society:1155 Sixteenth Street Northwest:Washington, DC 20036:(800)227-5558, (800)333-9511, Fax: (202)872-4615) pp. 7584-7592 - issn: 0024-9297 - wos: WOS:000492801000006 (41) - scopus: 2-s2.0-85073241670 (43)

11573/1163828 - 2018 - Modelling realistic microgels in an explicit solvent
Camerin, F.; Gnan, N.; Rovigatti, L.; Zaccarelli, E. - 01a Articolo in rivista
rivista: SCIENTIFIC REPORTS (London: Springer Nature London: Nature Publishing Group) pp. 14426- - issn: 2045-2322 - wos: WOS:000445615100055 (29) - scopus: 2-s2.0-85054097662 (27)

11573/1282934 - 2018 - Modelling microgels at interfaces
Camerin, Fabrizio - 04d Abstract in atti di convegno
congresso: Italian Soft Days (Padova; Italia)
libro: Italian Soft Days - book of abstracts - ()

11573/1282942 - 2018 - In silico modelling of microgels in bulk and at interfaces
Camerin, Fabrizio - 04d Abstract in atti di convegno
congresso: Annual Conference of the European Colloids and Interface Society (Ljubljana; Slovenia)
libro: Annual Conference of the European Colloids and Interface Society - book of abstracts - ()

11573/1282975 - 2018 - In silico modelling of microgels at interfaces
Camerin, Fabrizio - 04f Poster
congresso: Seventh Annual Niels Bohr International Academy Workshop-School on ESS Science (NBIA7): Deciphering the hidden dynamics of Soft Matter (Copenaghen; Denmark)
libro: Seventh Annual Niels Bohr International Academy Workshop-School on ESS Science (NBIA7): Deciphering the hidden dynamics of Soft Matter - book of abstracts - ()

11573/1282981 - 2018 - In silico modelling of microgels at interfaces
Camerin, Fabrizio - 04f Poster
congresso: Joint Summer School SFB 985 Georgia Institute of Technology, Functional Microgels and Microgel Systems (Aachen; Germany)
libro: Joint Summer School SFB 985 Georgia Institute of Technology, Functional Microgels and Microgel Systems - book of abstracts - ()

11573/1282967 - 2017 - The dynamical susceptibility in the Lorentz model
Camerin, Fabrizio - 04d Abstract in atti di convegno
congresso: The Italian National Conference on the Physics of Matter (Trieste; Italia)
libro: The Italian National Conference on the Physics of Matter - book of abstracts - ()

11573/1268453 - 2016 - Fluctuating systems under cyclic perturbations: relation between energy dissipation and intrinsic relaxation processes
Camerin, Fabrizio; Frezzato, Diego - 01a Articolo in rivista
rivista: PHYSICAL REVIEW. E (Ridge, NY: American Physical Society, [2016]-) pp. 022117- - issn: 2470-0045 - wos: WOS:000381418100002 (4) - scopus: 2-s2.0-84983684923 (4)

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