Long-ranged fluctuations in nonequilibrium fluids

This is my main active topic of research. You can find here my most recent publications or preprints of papers I’m currently working on. Most of this work is being done in collaboration with the research group of Professor Jan Sengers, at the University of Maryland, you may found them here. 
In addition I also collaborate with Prof. Mohamed Khayet in the measurement of thermal conductivity of liquids by the hot-wire technique.

Presentations:

• Enhancement of Thermal Fluctuations by Planar Couette Flow. 22-Nov-2011. Contributed talk at the ``64th Annual Meeting of the Division of Fluid Dynamics (APS)". Baltimore, Maryland, USA.
• Amplification of Thermal Fluctuations by Planar Couette Flow. 20-Jul-2011. Contributed talk at the ``4th International Symposium on Bifurcations and Instabilities in Fluid Dynamics (BIFD2011)", organized by the Universitat Politécnica de Catalunya, Barcelona.
• Possible Casimir forces arising from thermal fluctuations in confined fluids. 16-Sep-2010. Oral contribution at the "11th Granada Seminar on Computational and Statistical Physics", organized by the Universidad de Granada at La Herradura, Almuñécar.
• Thermodiffusion in chemically reacting binary mixtures with nonlinear kinetics. 10-Jun-2010. Contributed talk at the "9th International meeting on thermodiffusion (IMT9)", organized by the Universitè Paul Sabatier. Tolouse, Francia.
• Posibilidad de la existencia de fuerzas de Casimir originadas por las fluctuaciones térmicas en fluidos confinados. 21-May-2010. Charla oral (30 min.) en la Reunión: "Partículas y flujos", organizada por el Departamento de Física de la Universidad de Navarra. Pamplona.
• Ilustración del teorema de Jarzynski con sistemas sencillos. 20-Ene-2010. Charla oral (30 min.) en la Reunión: "Sistemas fuera del equilibrio: sistemas no-lineales, nanociencia y dinámica de fluidos", organizada por la Escuela Politécnica Superior de la Universidad Carlos III. Leganés, Madrid.
• Concentration fluctuations in non-isothermal reaction-diffusion systems. 04-Sep-2009. Invited talk at the "International Workshop on Non-Equilibrium Thermodynamics", on the occasion of Signe Kjelstrup's 60th Birthday, organized by the NTNU. Trondheim, Norway.
• Nonequilibrium transverse velocity fluctuations in planar Couette flow. 10-Aug-2009. Contributed talk at the Symposium "Bifurcations and Instabilities in Fluid Dynamics", organized by the University of Nottingham. Nottingham, UK.
• Thermal fluctuations in Nonequilibrium Thermodynamics. 24-Jun-2009. Contributed talk at the "17th Symposium of Thermophysical Properties", organized by the NIST. Boulder, Colorado, USA.
• Fluctuaciones térmicas y termodinámica fuera del equilibrio. 10-Jun-2009. Carla en el "Primer encuentro infonet", organizado por la Universitat de Barcelona, Spain.
• Velocity fluctuations and energy amplification in laminar fluid flows. 24-Nov-2008. Contributed talk at the "61st Annual Meeting of the Division of Fluid Dynamics (APS)". San Antonio, Texas, USA. 
• "Velocity Fluctuations in Laminar Fluid Flows". 14-Nov-2008, half an hour lecture at the Fifth Annual Burgers Symposium. University of Maryland. College Park, Maryland, USA.
• "Thermal fluctuations in nonequilibrium thermodynamics". 19-Sep-2008, half an hour talk at the symposium "Temperature in Non-Equilibrium Systems", on occasion of the 70th birthday of Prof. Casas-Vázquez. Organized by Institut d'Estudis Catalans at Barcelona (Catalonia - Spain).
• "Soret-driven concentration fluctuations in a chemically reacting liquid mixture". 10-Jun-2008, oral presentation at the "8th International Meeting on Thermodiffusion (IMT8)", organized by Forschungszentrums Jülich at Bonn (Germany).
• "Mode-coupling phenomena in nonequilibrium fluids". 5-Dec-2007, invited talk at the "Thermophysics informal seminar", organized by the Department of Applied Physics of the University of Vigo, at Ourense (Galicia - Spain).
• "Nonequilibrium fluctuations and hydrodynamics instabilities". 3-Jul-2007, one hour invited talk at the meeting "Physics of fluctuations far from equilibrium". Dresden, Germany.
• "Long - wavelength nonequilibrium concentration fluctuations induced by the Soret effect": 1-Jun-2006, oral presentation at the 7th International Meeting on Thermodiffusion. Donostia / S. Sebastián (Basque Country - Spain).
• "Soret-driven concentration fluctuations in binary fluid mixtures near the onset of convection": 06-Jul-2004, keynote lecture at the IMT-6 Thermal forces Conference. Varenna (Lecco - Italy).
• "Why are nonequilibrium fluctuations long-ranged?": 04-Nov-2003, at the Statistical Physics Seminar of the Institute for Physical Science and Technology of the University of Maryland. College Park (Maryland - USA).
• "Long-range correlations in nonequilibrium steady states": 03-Sep-2003, at the 8th Joint European Thermodynamics Conference. Barcelona (Catalonia - Spain).
• "Fluctuations in Fluids under Non-equilibrium Conditions": 03-Mar-2003, at the Simposium: "Stochastic effects in soft-condensed matter physics" of the APS 2003 March meeting. Austin (Texas - USA).
• "Fluctuaciones fuera del equilibrio en el problema de Rayleigh-Bénard": 24-Sep-2001, at the Simposium: "Termodinámica y Reología" of the XXVIII Reunión Bienal de la RSEF. Sevilla (Andalusia - Spain).
• "Linear theory of nonequilibrium temperature fluctuations in the Rayleigh-Bénard problem below the convective instability": 17-Jan-2001, at the Discussion: "Nonlinear Dynamics (Lattices, Waves, Instabilities and Fluctuations", Instituto Pluridisciplinar de la UCM, Madrid (Spain).
• "Fluctuaciones en disoluciones de polímeros en la presencia de gradientes de temperatura": 17-Jun-1998, at the 1ª Reunión Nacional sobre Estado Líquido. Aguadulce (Almería-Spain).
• "Concentration fluctuations in a polymer solution in the presence of a temperature gradient": 24-Jul-1998, oral contribution at
  Statphys-20, IUPAP International Conference on Statistical Physics. Paris (France).

Books:

• José M. Ortiz de Zárate and Jan V. Sengers: "Hydrodynamic fluctuations in Fluids and Fluid  Mixtures". 
  Publisher: Elsevier B.V. (Amsterdam, 2006). ISBN-13: 978-0-444-51515-5. 

• D. Bedeaux, J. M. Ortiz de Zárate, I. Pagonabarraga, J.V. Sengers, and S. Kjelstrup. Concentration fluctuations in non-isothermal reaction-diffusion systems. II. The nonlinear case.
  The Journal of Chemical Physics. 135 (2011), n. 124516.
• J. M. Ortiz de Zárate and J. V. Sengers. Hydrodynamic Fluctuations in Laminar Fluid Flow. I. Fluctuating Orr-Sommerfeld Equation.
  Journal of Statistical Physics. Vol. 144 (2011), pp. 774-792.
• J. M. Ortiz de Zárate, D. Bedeaux, I. Pagonabarraga, J. V. Sengers, and S. Kjelstrup. Nonisothermal diffusion-reaction with nonlinear Kramers kinetics.
  Comptes Rendus - Mecanique. Vol. 339 (2011), pp. 287-291.
• D. Bedeaux, I. Pagonabarraga, J. M. Ortiz de Zárate, J.V. Sengers and S. Kjelstrup. Mesoscopic non-equilibrium Thermodynamics of non-isothermal reaction-diffusion.
  PCCP (Physical Chemistry Chemical Physics), 12 (2010), pp. 12780--12793.
• Jan V. Sengers, José María Ortiz de Zárate: Velocity fluctuations in laminar fluid flow. 
  Journal of Non-Newtonian Fluid Mechanics, 165 (2010), 925-931.
• José María Ortiz de Zárate, Jan V. Sengers: Nonequilibrium velocity fluctuations and energy amplification in planar Couette flow. 
  Physical Review E, 79 (2009), #046308.
• José María Ortiz de Zárate, Jan V. Sengers: Transverse-velocity fluctuations in a liquid under steady shear. 
  Physical Review E, 77 (2008), #026306.
• José Antonio Fornés, José María Ortiz de Zárate: Low-frequency velocity correlations spectrum of fluids in a rectangular microcapillary. 
  Langmuir, 23 (2007), 11917-11923.
• José M. Ortiz de Zárate, Jan V. Sengers, Dick Bedeaux and Signe Kjelstrup: Concentration fluctuations in non-isothermal reaction-diffusion systems. 
  Journal of Chemical Physcis, 127 (2007), #034501.
• Jan V. Sengers and José M. Ortiz de Zárate: Thermal Fluctuations in nonequilibrium thermodynamics.
  Journal of Non-Equilibrium Thermodynamics, 32 (2007), 319-329. 
• José M. Ortiz de Zárate, José A. Fornés and Jan V. Sengers: Long - wavelength nonequilibrium concentration fluctuations induced by the Soret effect. 
  Physical Review E, 74, #046305 (2006).
• José M. Ortiz de Zárate and Jan V. Sengers: Comment on "Shear-induced quench of long-range correlations in a liquid mixture".
  Physical Review E , 73 (2006), #013201.
• José María Ortiz de Zárate, Fabio Peluso and Jan V. Sengers: Nonequilibrium fluctuations in the Rayleigh-Bénard problem for binary fluid mixtures. 
  The European Physical Journal E. 15 (2004), 319-333.
• José M. Ortiz de Zárate and Jan V. Sengers: On the physical origin of long-ranged fluctuations in fluids in thermal nonequilibrium states
  Journal of Statistical Physics, 115 (2004), 1341-1359.
• Jaechul Oh, José M. Ortiz de Zárate, Jan V. Sengers and Guenter Ahlers: Dynamics of fluctuations in a fluid below the onset of Rayleigh-Bénard convection
  Physical Review E, vol. 69 (2004), n 021106.
• Jan V. Sengers and José M. Ortiz de Zárate: Finite-size effects on Soret-induced nonequilibrium concentration fluctuations in binary liquids:  
  Revista Mexicana de Fisica, vol. 48-suppl. 1 (2002), pp. 14-25. On the occasion of the 70th birthday of Leopoldo Garcia Colin.
• José M. Ortiz de Zárate and Jan V. Sengers: Boundary effects on the nonequilibrium structure factor of fluids below the Rayleigh-Benard instability:  
  Physical Review E, vol. 66 (2002) n. 036305.
• José M. Ortiz de Zárate and Jan V. Sengers: Fluctuations in fluids in thermal nonequilibrium states below the convective Rayleigh-Benard instability:
  Physica A, vol. 300 (2001), pp. 25-52.
• Luis Muñoz Redondo and José M. Ortiz de Zárate: Finite-Size Effects with Rigid Boundaries on Nonequilibrium Fluctuations in a Liquid:  
  The European Physical Journal B, vol. 21 (2001), pp.135-144.
• José M. Ortiz de Zárate, R. Pérez Cordón and Jan V. Sengers: Finite-size effects on fluctuations in a fluid out of thermal equilibrium
  Physica A, vol 291 (2001), pp. 113-130.
• Wen B. Li, Kaichang J. Zhang, Jan V. Sengers, Robert W. Gammon and José M. Ortiz de Zárate: Light Scattering from Nonequilibrium Fluctuations in a Polymer Solution
  Journal of Chemical Physics, vol. 112 (2000), pp. 9139-9150.
• Wen B. Li, Kaichang J. Zhang, Jan V. Sengers, Robert W. Gammon and José M. Ortiz de Zárate: Concentration Fluctuations in a Polymer solution under a Temperature gradient
  Physical Review Letters, vol. 81 (1998), pp. 5580-5583. 

• Humberto Híjar, José M. Ortiz de Zárate: Jarzynski's equality illustrated by simple examples. European Journal of Physics, 31 (2010), 1097–1106.
• José María Ortiz de Zárate, Jan Vincent Sengers, Dick Bedeaux and Signe Kjelstrup: "Soret-driven concentration fluctuations in a chemically reacting liquid mixture". Pages 153-159 of the book: "Thermal Nonequilibrium", editors  S. Wiegand W. Köhler y J.K.G. Dhont. Publisher Schriften der Forschungszentrums Jülich, collection: Key technologies, vol. 3. Jülich (Nordrhein-Westfalen, Germany). 2008. ISBN(13): 978-3-89336-523-4.
• Jan Sengers and José M. Ortiz de Zárate: "Thermal fluctuations in nonequilibrium thermodynamics". Pages 33-40 of the book: "Thermodiffusion: Basics & Applications", editors: M.M. Bou-Ali and J.K. Platten. Publisher: Arrasateko Unibertsitatea Zerbitzu Editoriala. Arrasate/Mondragón (Spain). 2006. ISBN: 84-689-8814-6.
• José M. Ortiz de Zárate, José A. Fornés and Jan V. Sengers: "Long - wavelength nonequilibrium concentration fluctuations induced by the Soret effect". Pages 71-79 of the book: "Thermodiffusion: Basics & Applications", editors: M.M. Bou-Ali and J.K. Platten. Publisher: Arrasateko Unibertsitatea Zerbitzu Editoriala. Arrasate/Mondragón (Spain). 2006. ISBN: 84-689-8814-6.
• Jan V. Sengers and José M. Ortiz de Zárate: Nonequilibrium Concentration Fluctuations in Binary Liquids Systems Induced by the Soret Effect: Chapter (pp. 121-145) for the book: "Thermal nonequilibrum phenomena in fluid mixtures", edited by W. Köhler and S. Wiegand. Springer series Lecture Notes in Physics, vol. 584, Heidelberg, 2002. ISBN: 3-540-43231-0.

During the last years I have acted as referee of the following scientific journals:

• Applied Optics Letters (2005)
• Industrial & Engineering Chemistry Research (2008)
• International Journal of Heat and Mass Transfer (2007, 2006 and 2004)
• Journal of Chemical Physics (2008)
• Physica A (2005 and 2003)
• Physical Review E (2009, 2008 & 2007)
• Physical Review Letters (2008)
• Revista Española de Física (2006 and 2007).

Interesting links:

People with whom I have collaborated lately:
Jan Sengers group at College Park (MD). (They even have a picture of me)
Signe Kjelstrup and Dick Bedeaux  group at Trondheim (Norway).
Guenter Ahlers group at Santa Barbara (CA).
Marzio Giglio group at Milan.

Contact me: jmortizz@fis.ucm.es

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