Contact Details

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Position

Research Associate

Affiliation

Dr JR (Rafa) Castrejón-Pita

Research Interests

• Drop on Demand Inkjet Printing
• Fluid Dynamics
• Non-linear Systems
• Fractals
• Instrumentation
• Ion traps
• Acoustics

Background

• MSc National University of Mexico , (Physics: Fluid Dynamics and Chaos) Top class honours
• PhD Imperial College , (Physics: Ion traps )
• Elected Senior Member of Wolfson College from May 2008.
• Member of the Institute of Physics since 2006.

Current work

Dr Castrejón-Pita is a Research Associate in Cambridge University Engineering Department.

For more information see Rafa's own web page at http://www.eng.cam.ac.uk/~jrc64/

Publications

In peer-review journals of the Science Citation Index:

• J. R. Castrejón-Pita, A. Sarmiento Galan, R. Castrejón-Garcia, Fractal dimension and self-similarity in Asparagus plumosus, Fractals, 10(4), 429 (2002).
• R. Castrejón-Garcia, J. R. Varela, J. R. Castrejón-Pita, A. Morales, The laser-backscattering equations and their application to the study of the atmospheric structure, Rev. Mex. Fis., 48(6) 513 (2002).
• R. Castrejón Garcia, A. Sarmiento Galan, J. R. Castrejón Pita, A. A. Castrejón Pita, The Fractal Dimension of an Oil Spray, Fractals, 11(2), 155 (2003).
• A. A. Castrejón Pita, J. R. Castrejón Pita, A. Sarmiento Galan, R. Castrejón Garcia, The impressive complexity in the Nautilus pompilius shell, Fractals, 11(2), 163 (2003).
• A. A. Castrejón Pita, J. R. Castrejón Pita, G. Huelsz Structured and fractal smoke patterns in a simple cavity , Fractals, 11(2) 169 (2003). (COVER)
• J.R. Castrejón-Pita, J.A. del Rio, A.A. Castrejón-Pita, G. Huelsz, Experimental Observation of Differences in the Dynamic Response of Newtonian and Viscoelastic Fluids. , Physical Review E, 68 046301 (2003).
• Arturo F. Méndez-Sánchez, Jóse Pérez-González, Lourdes de Vargas, J. Rafael Castrejón-Pita, Alfonso A. Castrejón-Pita , and Guadalupe Huelsz, Particle Image Velocimetry of the unstable capillary flow of a micellar solution , Journal of Rheology, 47(6) 1455 (2003).
• J. R. Castrejón Pita, A. A. Castrejón Pita, A. Sarmiento Galan, R. Castrejón Garcia, Nasca Lines: A Mystery wrapped in an Enigma , Chaos, 13(3) 836 (2003).
• J. A. del Rio and J. R. Castrejón Pita, A simple model for the dynamic permeability of viscoelastic fluids. , (In Spanish: Modelo simple para la permeabilidad dinámica de los fluidos viscoelásticos). Rev. Mex. Fis., 49(1) 74 (2003).
• A. A. Castrejón-Pita, A. Sarmiento-Galán, J. R. Castrejón-Pita and R. Castrejón-García Fractal Dimension in Butterflies Wings: a novel approach to understanding wing patterns? , Journal of Mathematical Biology, DOI: 10.1007/s00285-004-0302-6 (2004).
• D.F.A.Winters, A.M. Abdulla, J.R. Castrejón Pita, A. de Lange, D.M. Segal, R.C. Thompson, Plans for laser spectroscopy of trapped cold hydrogen-like HCI , Nuclear Instrument and Methods in Physics Research B, 235 201 (2005).
• A. A. Castrejón Pita, J. R. Castrejón Pita, and A. Sarmiento G. Breathers and Thermal Relaxation as a Temporal Process, Chaos, 15(2) 023501 (2005).
• O. Sasic, J. Jovanovic, Z. Lj. Petrovic, J. de Urquijo and J. R. Castrejón-Pita, J. L. Hernández-Ávila, E. Basurto, Electron drift velocities in mixtures of He and Xe and experimental verification of corrections to Blanc's law , Physical Review E, 71(4) 046408 (2005).
• M. Torralba, J.R. Castrejón-Pita, A.A. Castrejón-Pita, G. Huelsz, J.A. del Rio, J. Ortin, Measurements of the bulk and interfacial velocity profiles in oscillating Newtonian and Maxwellian fluids, Physical Review E, 72(1) 016308 (2005).
• J. R. Castrejón-Pita and R. C. Thompson, A proposal for a Planar Ion Trap , Physical Review A, 72 013405 (2005).
• R. Castrejón García , J. R. Varela , A. A. Castrejón Pita and J. R. Castrejón Pita, Development and evaluation of an alternative method for processing elastic-lidar return signals , Int. Journal of Modern Physics B , 20(2) 141 (2006).
• J. R. Castrejón-Pita, A. Morales, R. Castrejón-García, Critical Angle Laser Refractometer , Review of Scientific Instruments, 77 035101 (2006).
• J. R. Castrejón-Pita, A. A. Castrejón-Pita, G. Huelsz, and R. Tovar, Experimental demonstration of the Rayleigh acoustic viscous boundary layer theory , Physical Review E, 73 036601 (2006).
• J.R. Castrejón-Pita, H. Ohadi , D.R. Crick, D.F.A. Winters, D.M. Segal, R.C. Thompson, Novel designs of Penning traps , Journal of Modern Optics, 54(11) 1581, (2007).
• A.A. Castrejón-Pita, J.R. Castrejón-Pita, G. Huelsz and A. Sarmiento, " Comment to: Acoustic Chaos", Journal of the Acoustical Society of America, accepted, (2008).
• J.R. Castrejón-Pita, G. Martin, S. Hoath and I. Hutchings, " A Simple Large-scale Droplet Generator for Studies of Inkjet Printing", Review of Scientific Instruments, in press, (July 2008).
• Castrejón-García, J. R. Castrejón-Pita and A.A. Castrejón-Pita, " Design, development and evaluation of a simple blackbody radiative source", Review of Scientific Instruments, 81 055106, (2010).
• J.R. Castrejón-Pita, N.F. Morrison, O.G. Harlen, G. Martin and I.M.Hutchings, " Experiments and Lagrangian simulations on the formation of droplets in continuous", Physical Review E, 83 016301, (2011).
• J.R. Castrejón-Pita, N.F. Morrison, O.G. Harlen, G. Martin and I.M. Hutchings, " Experiments and Lagrangian simulations on the formation of droplets in drop-on-demand mode", Physical Review E, 83 036306, (2011).
• J.R. Castrejón-Pita, E.S. Betton, K.J. Kubiak, M.C.T. Wilson and I.M. Hutchings, " The dynamics of the impact and coalescence of droplets on a solid surface", Biomicrofluidics, 5 014112, (2011).
• R. Castrejón-García, J.R. Castrejón-Pita, G. Martin and I.M.Hutchings, " The shadowgraph imaging technique and its modern application to fluid jets and drops", Rev. Mex. Fis, in press, (2011).
• J.R. Castrejón-Pita, G. Martin and I.M.Hutchings, " Experimental Study of the Influence of Nozzle Defects on Drop-on-demand Ink-jets", Journal of Imaging Science and Technology, in press, (2011).

Other peer-review editions:

• S. Hoath, G. Martin, JR Castrejon-Pita and I. Hutchings, " Satellite formation in drop on demand printing of polymer solutions", NIP23, Imaging Society of Japan, ISBN: 978-0-89208-273-9, Springfield VA, USA, (2007).
• J.R. Castrejón-Pita, G. Martin, S. Hoath and I. Hutchings, " A large-scale print-head for drop-on-demand and continuous ink jet studies", NIP25, Imaging Society of Japan, ISBN: 978-0-89208-287-2, Springfield VA, USA, , (2009).
• J.R. Castrejón-Pita, G. Martin, S. Hoath and I. Hutchings, " Influence of Nozzle Defects on Drop-on-demand Ink-jets", NIP26, Imaging Society of Japan, ISBN: 978-0-89208-293-3, Springfield VA, USA, (2010).
• S. Hoath, W.K. Hsiao, J.R. Castrejón-Pita, D.M. Colgate, S. Jung and I. Hutchings, " Jet diameters and velocity profiles in continuous Ink-Jets", NIP26, Imaging Society of Japan, ISBN: 978-0-89208-293-3, Springfield VA, USA, (2010).

Books:

• J.R. Castrejón-Pita, " Design, Development and Operation of Novel Ion Trap Geometries", ISBN 978-3-639-13866-5, VDM Verlag, (2009).