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Main Researchers

Miguel Kiwi T.

Phone(s): (56-2) 9787290, (56-2) 9787290 (Fax)
Departamento de Física, Facultad de Ciencias, Universidad de Chile.
Las Palmeras 3425, Ñuñoa, Santiago, Chile.

Research Areas

  • Structure and properties of metallic nanoclusters.
  • Magnetic multilayers, their properties and applications as sensors.
  • How do carbon nanotubes filled with iron behave?

National and International Committees and Honors

  • Fundación Benigno Polanco Prize to the best Mechanical Engineer graduated in 1961.
  • Member of Sigma Xi.
  • Member of the Raven Society, Honorary Society of the University of Virginia.
  • Associate member of the Centro Atómico Bariloche (1986).
  • Critics Prize, international category, awarded by the Valparaíso Arts Critics Circle, for the Exposition Estética en las Ciencias.
  • Fellow of the American Physical Society (1993).
  • Full Member of the “Academia de Ciencias del Instituto de Chile” (1994).
  • Medal for Distinguished Professional Trajectory, Universidad Técnica Federico Santa María (2007).
  • Rector’s Medal, Universidad de Chile (2007).
  • National Science Prize for the Exact Sciences (2007).

Guieded Graduate Thesis (Since 2006)

  • Rafael González (PhD).
  • Pamela Soza (PhD).

Projects

  • FONDECYT 1071062 (Inv. Principal).
  • FONDECYT 1090225 (Coinvestigador).

Publications

2018
  1. R.I. González, F.J. Valencia, J. Rogan, J.A. Valdivia, J. Sofo, M. Kiwi, F. Múñoz
    Bending energy of 2D materials: graphene, MoS2 and imogolite
    RSC Adv., 2018,8, 4577-4583
  2. A.A. Shiryaev, J.A. Hinks, N.A. Marks, G. Greaves, F.J. Valencia, S.E. Donnelly, R.I. González, M.Kiwi, A.L. Trigub, E.M. Bringa, J.L. Fogg, I.I. Vlasov
    Ion implantation in nanodiamonds: size effect and energy dependence
    Scientific Reportsvolume 8, Article number: 5099 (2018)
  3. P.N. Reyes, F.J. Valencia, H. Vega, C. Ruestes, J. Rogan, J.A. Valdivia, M. Kiwi
    The stability of hollow nanoparticles and the simulation temperature ramp
    Inorg. Chem. Front., 2018,5, 1139-1144
  4. J. Figueroa, J. Rogan, J.A. Valdivia, M. Kiwi, G. Romero, F. Torres
    Nucleation of superfuid-light domains in a quenched dynamics
    Scientific Reports (2018) 8:12766
  5. F.J. Valencia, R.I. González, H. Vega, C. Ruestes, J. Rogan, J.A. Valdivia, E.M. Bringa, M. Kiwi
    Mechanical Properties Obtained by Indentation of Hollow Pd Nanoparticles
    J. Phys. Chem. C, 2018, 122 (43), pp 25035–25042

2017
  1. F.J. Valencia, R.I. González, J.A. Valdivia, M. Kiwi, E.M. Bringa, J. Rogan
    Inducing Porosity on Hollow Nanoparticles by Hypervelocity Impacts
    J. Phys. Chem. C, 2017, 121 (33), pp 17856–17861
  2. F. Torres, R. Morales, I.K. Schuller, M. Kiwi
    Dipole-induced exchange bias
    Nanoscale, 2017,9, 17074-17079
  3. V. Munizaga, R. Ramírez, M. Kiwi, G. García
    Mechanical properties of iron filled carbon nanotubes: Numerical simulations
    Journal of Applied Physics 121, 234303 (2017) | Published 19 Jun
  4. V. Munizaga, R. Ramírez, M. Kiwi, G. García
    Mechanical properties of iron filled carbon nanotubes: Numerical simulations
    Journal of Applied Physics 121, 234303 (2017) | Published 19 June
  5. F.J. Valencia, R.I. González, E.M. Bringa, Miguel Kiwi
    Hillock formation on nanocrystalline diamond
    Carbon 119 (2017) 219-224
  6. N. Arancibia-Miranda, M. Escudey, R. Ramírez, R.I. González, A.C.T. van Duin, M. Kiwi
    Advancements in the Synthesis of Building Block Materials: Experimental Evidence and Modeled Interpretations of the Effect of Na and K on Imogolite Synthesis
    J. Phys. Chem. C, 2017, 121 (23), pp 12658–12668 | Published 30 May

2016
  1. F.J. Valencia, R.I. González, D. Tramontina, J. Rogan, J.A. Valdivia, M. Kiwi, E.M. Bringa
    Hydrogen Storage in Palladium Hollow Nanoparticles
    J. Phys. Chem. C, 2016, 120 (41), pp 23836–23841; Published 26 Sep 2016
  2. S. Carrasco, A. Varas, J. Rogan, M. Kiwi, J.A. Valdivia
    Multibody expansion of particle interactions: How many-body is a particular element in a cluster
    Phys. Rev. B 94, 075435; Published 23 Aug 2016
  3. A. Varas, F. Aguilera-Granja, J. Rogan, M. Kiwi
    Structural, electronic, and magnetic properties of Fe x Co y Pd z (x + y + z ≤ 7) clusters: a density functional theory study
    J. Nanopart. Res (2016) 18:252; Published 23 Aug 2016
  4. M. Ramírez, J. Rogan, J.A. Valdivia, A. Varas, M. Kiwi
    Diversity Characterization of Binary Clusters by Means of a Generalized Distance
    Zeitschrift für Physikalische Chemie, 230 (5-7), 977-989; Published 14 Mar 2016
  5. F. Castillo, B. A. Toledo, V. Muñoz, J. Rogan, R. Zarama, J. F. Penagos, M. Kiwi, J.A. Valdivia
    Spatiotemporal Complexity of a City Traffic Jam
    JCA 11.5-6, p. 381-398; Published 2016

2015
  1. A. Varas, F. Aguilera-Granja, J. Rogan, M. Kiwi
    Structural, electronic, and magnetic properties of FexCoyNiz (x+y+z=13) clusters: A density-functional-theory study
    Journal of Magnetism and Magnetic Materials 394 (2015) 325–334; Publilshed 15 Nov 2015
  2. F. Muñoz, A. Varas, J. Rogan, J.A. Valdivia, M. Kiwi
    Au13nAgn clusters: a remarkably simple trend
    Phys. Chem. Chem. Phys., 2015,17, 30492-30498; Published 11 Nov 2015
  3. F. Munoz, A.H. Romero, J. Mejia-Lopez, I. Roshchin, R.I. Gonzalez, M. Kiwi
    Surface states of FeF2 (110) and its uncompensated magnetization
    Journal of Magnetism and Magnetic Materials 393 (2015) 226–232; Published 1 Nov 2015
  4. F. Valencia, J.D. Mella, R.I. González, M. Kiwi, E.M. Bringa
    Confinement effects in irradiation of nanocrystalline diamond
    CARBON 93 (2015) 458–464; Published Nov 2015
  5. J. Clark, M. Kiwi, F. Torres, J. Rogan, J.A. Valdivia
    Generalization of the Ehrenfest urn model to a complex network
    Phys. Rev. E 92, 012103; Published 6 Jul 2015
  6. M. Elzo, R. Moubah, C. Blouzon, M. Sacchi, S. Grenier, R. Belkhou, S. Dhesi, D. Colson, F. Torres, M. Kiwi, M. Viret, N. Jaouen
    Coupling between an incommensurate antiferromagnetic structure and a soft ferromagnet in the archetype multiferroic BiFeO3/cobalt system
    Phys. Rev. B 91, 014402; Published 5 Jan 2015

2014
  1. F. Castillo, B.A. Toledo, V. Muñoz, J. Rogan, R. Zarama, J.F. Penagos, M. Kiwi, J.A. Valdivia
    City traffic jam relief by stochastic resonance
    Physica A 403 (2014) 65–70; Published 1 June 2014
  2. R.I. González, R. Ramírez, J. Rogan,J.A. Valdivia, F. Munoz, F. Valencia, M. Ramírez, M. Kiwi
    Model for Self-Rolling of an Aluminosilicate Sheet into a Single-Walled Imogolite Nanotube
    J. Phys. Chem. C, 2014, 118 (48), pp 28227–28233; Published 4 Dec 2014
  3. V. Munizaga, G. García, E. Bringa, M. Weissmann, R. Ramírez and Miguel Kiwi
    Atomistic simulation of soldering iron
    Computational Materials Science, 92, 457
  4. F. Torres, D. Altbir, M. Kiwi
    Dzyaloshinskii-Moriya interaction and magnetic ordering in 1D and 2D at nonzero T
    EPL, 106 (2014) 47004; Published 26 May 2014
  5. F. Castillo , B.A. Toledo , V. Muñoz , J. Rogan , R. Zarama , M. Kiwi, J. A Valdivia
    City traffic jam relief by stochastic resonance
    Physics A, 403, 65-70

2013
  1. F. Muñoz, J. Rogan, J. A. Valdivia, A. Varas, and M. Kiwi
    Binary cluster collision dynamics and minimum energy conformations
    Physica B - Condensed Matter 427, 6-84
  2. J. Rogan, A. Varas, J. A. Valdivia, and M. Kiwi
    A strategy to find minimal energy nanocluster structures
    Journal of Computational Chemistry 34, 2548–2556
  3. J. Rogán, M. Ramírez, A. Varas, and M. Kiwi
    How relevant is the choice of classical potentials in fi nding minimal energy cluster conformations?
    Computational and Theoretical Chemistry 1021, 155-163

2014
  1. M. Kiwi and F. Torres
    A Quantum Exchange Bias Model for Coupling Across a Non Magnetic Interlayer
    IEEE Transactions on Magnetics 50, 4800104

2013
  1. F. Muñoz, C. Cárdenas, J. Rogan, J.A. Valdivia, P. Fuentealba and M. Kiwi
    Ab Initio Molecular Dynamics Simulations of Ti2 on C20 Collisions and C20Ti2 Configurations
    The Journal of Physical Chemistry C 117, 4287-4291
  2. F. Muñoz, M. Kiwi, D. Altbir and J.L. Morán-López
    Properties of Fe(8-n) Co(n) nanoribbons and nanowires: a DFT approach
    Journal of Magnetism and Magnetic Materials (2013) 339, 75–80; Published Aug 2013

2012
  1. M. Kiwi, F. Muñoz, G. García, R. Ramírez, J. Rogan, J.A. Valdivia
    Nanocluster Collisions as a Way to Understand the Role of d-Shell Polarization
    European Physics Journal D 25, 2205

2010
  1. G. García, M. Kiwi, J. Mejía-López, R. Ramírez
    Exchange bias of patterned systems: model and numerical simulation
    Journal of Magnetism and Magnetic Materials 322, 3329-3332

2011
  1. F. Muñoz, J. Rogan, G. García, M. Ramírez, J.A. Valdivia, R. Ramírez and M. Kiwi
    Collisions between a single gold atom and a 13 atom gold clusters: an ab initio approach
    European Journal of Physics D, 61 87-93
  2. R. González, G. Garcia, R. Ramírez, M. Kiwi, J. A. Valdivia, T. Rahman
    Temperature dependent properties of 147 and 309 atom iron-gold nanoclusters
    Phys. Rev B 83 155425
  3. F. Muñoz, J. Rogan, G. Garcia, J. A. Valdivia, R. Ramírez, M. Kiwi
    The role of d-orbital polarization on Rhodium cluster collisions
    European Phys. J. D. DOI 10114
  4. P. Soza, F. Y. Hansen, H. Taub, M. Kiwi, E. Cisternas, U.G. Volkmann and V. del Campo
    Molecular-dynamics simulation of lateral friction in contact-mode atomic force microscopy of alkane films: The role of molecularFlexibility
    Eur. Phys. Letters 95, 36001
  5. R.I. González, G. García, R. Ramírez, M. Kiwi
    Role of the substrate dynamics: iron clusters deposited on an iron slab
    Surface Science DOI 1100371

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