Dr. Marcela L. Redígolo

Education:

Ph.D. in Science, Institute of Physics Gleb Wataghin, Unicamp, Brazil

Visiting Scholar, Chemistry Department, Columbia University, USA

M.Sc. in Physics, Institute of Physics Gleb Wataghin, Unicamp, Brazil

BA in Science Education, College of Education, Unicamp, Brazil

BA in Physics, Institute of Physics Gleb Wataghin, Unicamp, Brazil

Research Areas: Physics of Condensed Matter, Nanoscience, Materials Engineering

Skills:

Nanocrystals and other nanostructures syntheses: vacuum and wet processes/chemistry, thermolysis, surfactants & colloids, nanostructure self-assembly; thin film deposition: dropcast, spincast, electrophoretic deposition (EPD); electron microscopy: transmission (TEM and HRTEM), scanning (SEM), scanning transmission (STEM); photoluminescence analysis (PL), photoluminescence of excitation (PLE), absorption, X-ray diffraction analyses (XRD), thermogravimetric analysis (TGA), differential thermal analysis (DTA), nanostructured material functionalization protocols;

Professional Experience:

Visiting Research Associate - 2007

University of California in Irvine (UCI) - Biomedical Engineering Department

UCI - Developmental Biology Center (DBC)

Activities:

•Investigation of surface functionalization of gold nanocrystals for biotagging.

•Training of postdocs on the synthesis of gold nanoparticles and structure characterization (preparation of samples for electron microscopy).

•Structural characterization of commercial solutions of gold nanoparticles and other fluorescent nanomaterials

•Study of solutions with extreme low concentration of fluorescent biostructures (preliminary results only).

Research Associate in Physics (postdoc) - 2004 - 2007

Vanderbilt University - Department of Physics and Astronomy

Vanderbilt Institute of Nanoscale Science and Engineering (VINSE)

Activities:

•Development of a novel precursor for the synthesis of europium sulfide (EuS) nanocrystals.

•Synthesis of the smallest EuS nanocrystal (paper under submission process).

•Observed for the first time and investigated the magnetization reversal for EuS nanocrystals as a function of size and temperature.

•Developed novel nanomaterials: europium hydroxychloride (Eu(OH)₂Cl) nanoneedles and nanospindles.

•Training of undergraduate and graduate students on different characterization techniques such as electron microscopies, X-ray techniques, and others.

•Supervision of undergraduate and graduate student projects, and assurance of the safety during these activities.

•Responsible for laboratory maintenance and training of students in many different synthetic techniques and characterization procedures.

•Writing papers reporting results on the studies and discoveries, preparing talks and participating on national and international conferences and other relevant meetings.

•Writing and/or reviewing scientific proposals of new projects, together with group's PI, for submission to grants.

•Approved for two years as a user of the facilities at the CNMS at ORNL, including their electron microscopes (STEM, HRTEM, SEM, etc).

Visiting Research Collaborator - 2003

Universidad de Chile - Facultad de Ciencias Físicas y Matemáticas (FCFM)

Activities:

•Characterization of calcium titanate coatings on titanium alloys for biomedical applications.

•Study of hydroxyapatite samples using X-ray photoelectron spectroscopy (XPS).

Assistant Professor of Physics - 2000 - 2003

Universidade do Vale do Paraíba (Univap) - Institute of Research & Development

Activities:

•Study of the physical mechanisms of light interaction with biological tissues, with the main goal of understanding the properties of the biological processes. Consequently, contribute to the development of novel techniques for successful diagnosis and treatment of human diseases.

•Supervision of undergraduate and graduate student projects, and assurance of the safety during these activities.

•Supervision of graduate students through their research and dissertations as advisor and co-advisor.

•Responsible for laboratory maintenance and training of students in many different synthetic techniques and characterization procedures.

•Four years of experience preparing and presenting classes in all levels (undergraduate, graduate and external activities) for the university in the relevant areas of my research and background.

•Managing activities involved in evaluating, manufacturing and planning of new projects.

•Participating in the development of a new undergraduate curriculum on Biomedical Engineering.

•Writing papers reporting results on the studies and discoveries.

Recent publications:

1.      1. M. L. Redígolo, D. S. Koktysh, S. J. Rosenthal and J. H. Dickerson, Physical Properties of Quantum-Confined Europium Sulfide Nanocrystals, Physica Status Solidi C 4 (2), 406, 2007.

2.      2. S. V. Mahajan, M. L. Redígolo, D. S. Koktysh and J. H. Dickerson, Self Assembly of Eu₂O₃ Nanocrystals and Nanoneedles, Physica Status Solidi C 4 (2), 409, 2007.

3.      3. S. V. Mahajan, D. W. Kavich, M. L. Redígolo and J. H. Dickerson, Structural Properties of Electrophoretically Deposited Europium Oxide Nanocrystalline Thin Films. J. Mater. Sci. 41 (24), 8160, 2006.

4.      4. M. L. Redígolo, D. S. Koktysh, S. J. Rosenthal, J. H. Dickerson, Z. Gai, L. Gao and J. Shen, Magnetization reversal in europium sulfide nanocrystals, Appl. Phys. Lett. 89 (22), 222501, 2006.

      5. S. V. Mahajan, M. L. Redígolo, D. S. Koktysh, and J. H. Dickerson, Stepwise assembly of Europium sesquioxide nanocrystals and nanoneedles, In: Proc. SPIE, Vol. 6321, 632102, Nanophotonic Materials III, Zeno Gaburro and Stefano Cabrini, Eds. 2006.

     6. I. C. R. Cesar, M. L. Redígolo, P. C. S. Liporoni and E. Munin, Analyses by photoreflectance spectroscopy and by Vickers hardness of conventional and laser-assisted tooth bleaching. Am. J. Dent. 18 (4), 219, 2005.

     7. J. P. Wiff, V. M. Fuenzalida, C. Pacheco, A. Sandes and M. L. Redígolo, Fibroblast culture on titanium coated with hydrothermal electrochemical CaTiO₃. In: International Federation for Medical and Biological Engineering (IFMBE). Proc. IFMBE 5 (1), 149, 2004.

      8. H. P. Souza, E. Munin, C. E. V. Paiva, L. P. Alves, M. L. Redígolo and M. T. T. Pacheco, Time‑resolved measurements of sodium emission in the plume generated by laser ablation of myocardium tissue. In: Proc. SPIE 5319, 196, Laser Interaction with Tissue and Cells XV, Steven L. Jacques and William P. Roach, Eds. 2004. 

      9. H. P. Souza, E. Munin, L. P. Alves, M. L. Redígolo and M. T. T. Pacheco, A scattered‑light‑based system for the probe beam monitoring of laser ablation dynamic. In: Proc. SPIE 5319, 190, Laser Interaction with Tissue and Cells XV, Steven L. Jacques and William P. Roach, Eds. 2004.