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Diego Pontoni

Postdoctoral Fellow, Division of Engineering and Applied Sciences, Harvard University (November 2003 - present)
Advisor:  Prof. Peter S. Pershan
Department of Physics and
Division of Engineering and Applied Sciences

Current  Address:       

Gordon McKay Laboratory Office 317, 9 Oxford Street Cambridge, MA 02138     Phone: (617) 495-4015        Fax:(617) 496 4654                 E-mail: diego@xray.harvard.edu


Ph.D. (chemistry)  King's College London, 2002
M.Sc.(physics)  University of Trieste, Italy, 1996
B.Sc. (physics, mathematics)  "N. Copernico" High School, Udine, Italy, 1989

Research experience:

Postdoctoral fellow, Division of Engineering and Applied Sciences, Harvard University (November 2003 - present)
                                 within Nanotechnology and Interdisciplinary Research Initiative (NIRT) on wetting of nanopatterns.          
    Advisor  Prof. Peter S. PershanDepartment of Physics and Division of Engineering and Applied Sciences
    Projects•  Investigation of Langmuir monolayers of  functionalized nanoparticles.
                      • X-ray reflectivity studies of wetting of nanopatterned surfaces.
                      • Synchrotron reflectivity studies of liquid eutectic alloy surfaces.                        

Visiting scientist, European Synchrotron Radiation Facility (ESRF), Grenoble, France (May 2002 - October 2003).
    Advisor  :  Dr. Theyencheri Narayanan, Soft Condensed Matter Group , High Brilliance Beamline
    Projects Development of anomalous small angle X-ray scattering for the study of polymer colloids.
                       • Application of  time-resolved simultaneous small and wide angle X-ray scattering to the study of colloidal growth phenomena.

Postdoctoral fellow, Universität Karlsruhe, Germany (March 2002 - September 2003)
                                 within European Research Network on Colloids (HUSC)
    Advisor  :  Prof. Dr. Matthias Ballauff, Polymer-Institut
    ProjectsInvestigation of counterion distribution around spherical polyelectrolyte brushes.
                       • Studies of  formation and transformation of colloidal calcium carbonate.

Doctoral fellow, ESRF and King's College London (January 1999 - March 2002).
    AdvisorsProf. Adrian R. Rennie, Department of Chemistry
                       Dr. Theyencheri Narayanan, High Brilliance Beamline
    Projects :  Early stage nucleation and growth of colloidal silica.
                       • Gas-liquid phase transitions in sterically stabilised colloids.
                       • Adsorption induced attractive colloidal glasses.
                       • Evaluation of X-ray detectors for SAXS.

Research fellow, Elettra Synchrotron Light Source, Trieste, Italy (July 1996 - December 1998).
    Advisor  :  Dr. Giuliana Tromba, Medical Beamline
    ProjectsAssembly of multi-layer detectors for digital radiography.
                       • Implementation of front-end and read-out electronics.
                       • Application of phase contrast X-ray imaging methods to digital mammography.

Master thesis fellow, University of Trieste and National Institute for Nuclear Physics, Trieste, Italy (May 1995 - May 1996).
    Advisors : Prof. Edoardo Castelli, Department of Physics
                      Dr. Michela Prest, Syrmep Collaboration
    ProjectsEvaluation of silicon detectors for X-ray imaging.
                       • Characterisation of VLSI analog-digital circuits.

Selected publications:

"Solvent Mediated Assembly of Nanoparticles Confined in Mesoporous Alumina"
    K.J. Alvine, D. Pontoni, O.G. Shpyrko, P.S. Pershan, D.J. Cookson, K. Shin, T.P. Russell, M. Brunnbauer, F. Stellacci, and O. Gang
    Phys. Rev. B 73, 125412 (2006)

"Atomic-Scale Surface Demixing in a Eutectic Liquid BiSn Alloy"
    O. Shpyrko, A.Y. Grigoriev, R. Streitel, D. Pontoni, P.S. Pershan, M. Deutsch, B. Ocko, M. Meron, and B. Lin
    Phys. Rev. Lett. 95, 106103 (2005)

"Time-resolved SAXS study of the effect of a double hydrophilic block-copolymer on the formation of CaCO3 from a supersaturated salt solution"
    J. Bolze, D. Pontoni, M. Ballauff, T. Narayanan, and H. Colfen
    J. Coll. Interf. Sci. 277, 84 (2004) [PDF]

"Counterion distribution around a spherical polyelectrolyte brush probed by anomalous small-angle X-ray scattering "
    N. Dingenouts, M. Patel, S. Rosenfeldt, D. Pontoni, T. Narayanan, and M. Ballauff
    Macromolecules 37, 8152 (2004) [PDF]

"Nucleation and growth kinetics of colloidal silica"
    D. Pontoni, T. Narayanan and A.R. Rennie
    Prog. Coll. Polym. Sci. 123, 227 (2004) [PDF]

"Analysis of the correlation of counterions to rod-like macroions by anomalous small-angle X-ray scattering"
    M. Patel, S. Rosenfeldt, M. Ballauff, N. Dingenouts, D. Pontoni, and T. Narayanan
    Phys. Chem. Chem. Phys. 6, 2962 (2004) [PDF]

"Interactions and kinetic arrest in an adhesive hard-sphere colloidal system"
    D. Pontoni , S. Finet, T. Narayanan, and A.R. Rennie
    J. Chem. Phys. 119, 6157 (2003) [PDF]

"Crystallization of calcium carbonate observed in-situ by combined small- and wide-angle X-ray scattering"
    D. Pontoni, J. Bolze, N. Dingenouts, T. Narayanan, and M. Ballauff
    J. Phys. Chem. B 107, 5123 (2003) [PDF]

"Microstructure and dynamics near an attractive colloidal glass transition"
    D. Pontoni, T. Narayanan, J.-M. Petit, G. Grübel, and D. Beysens
    Phys. Rev. Lett. 90, 188301 (2003) [PDF]

"USAXS studies of attractive colloidal glass transition"
    D. Pontoni and T. Narayanan
    J. Appl. Cryst. 36, 787 (2003) [PDF]

"Time-resolved SAXS study of nucleation and growth of silica colloids"

    D. Pontoni, T. Narayanan, and A.R. Rennie
    Langmuir  18, 56 (2002) [PDF]

"High dynamic range SAXS data acquisition with an X-ray image intensifier"

    D. Pontoni, T. Narayanan, and A.R. Rennie
    J. Appl. Cryst.  35, 207 (2002) [PDF]

"Mammography with synchrotron radiation: phase-detection techniques"
    F. Arfelli, V. Bonvicini, A. Bravin, G. Cantatore, et al
    Radiology  215, 286 (2000) [PDF]

"A fast 1-D detector for imaging and time resolved SAXS experiments"
    R.H. Menk, F. Arfelli, S. Bernstorff, D. Pontoni, A. Sarvestani, H.J. Besch, and A.H. Walenta
    Nucl. Instrum. Meth. A  422, 698 (1999) [PDF]

"SYRMEP Front-end and Read-out Electronics"
    F. Arfelli, V. Bonvicini, A. Bravin, G. Cantatore, et al
    Nucl. Instrum. Meth. A  409, 351 (1998) [PDF]

"A Digital Readout System for the SYRMEP Silicon Strip Detectors "
    F. Arfelli, G. Barbiellini, V. Bonvicini, A. Bravin, et al
    Nucl. Instrum. Meth. A 392, 392 (1997) [PDF]

"CASTOR1.0 a VLSI analog-digital circuit for pixel imaging applications"
    C. Colledani, G. Comes, W. Dulinski, Y. Hu, et al
    Nucl. Instrum. Meth. A  395, 435 (1997) [PDF]

"Design and evaluation of AC-coupled, FOXFET-biased, `edge on', silicon strip detectors for X-ray imaging "
    F. Arfelli, V. Bonvicini, A. Bravin, P. Burger et al
    Nucl. Instrum. Meth. A  385, 311 (1997) [PDF]

Complete list


"Harry Brumberger" prize 2002 by the International Union of Crystallography and SAS2002
 for the application of ultra small-angle X-ray scattering in the studies of attractive colloidal glass transition.

"Renzo Renzi" prize 1996 by the Italian Association of Biomedical Physics
for the thesis work on the transfer of technology from High Energy Physics to Medical Physics.