Dr. Rodrigo Sérgio Wiederkehr

University of Louisville, USA

Email: rodrigosergio@hotmail.com

Qualifications

2003-2007 Ph.D., University of Sao Paulo, Brazil, Experimental Physics

1999-2003 B.S., University of Rio Grande do Sul, Brazil, Physics

Publications (Selected)

1. Aslan, M.M., Webster, N.A., Byard, C.L., Pereira, M.B., Hayes, C.M., Wiederkehr, R.S. & Mendes, S.B. Low Loss Optical Waveguide for the Near Ultra Violet and Visible Spectral Regions with Al2O3 Thin Films from Atomic Layer Deposition.Thin Solid Films518(17), pp:4935-4940 (2010) (DOI: 10.1016/j.tsf.2010.03.011).
2. Wiederkehr R.S, Hoops, G.C., Aslan, M.M., Byard, C.L. & Mendes, S.B. Investigations of the Q and CT Bands of Cytochrome c Submonolayer Adsorbed on an Alumina Surface Using Broadband Spectroscopy with Single-Mode Integrated Optical Waveguides.The Journal of Physical Chemistry C113(19), pp:8306-8312, (2009) (DOI: 10.1021/jp810845e).
3. Wiederkehr R.S., Salvadori M.C., Brugger J., Degasperi F.T. & Cattani M. The gas flow rate obtained by an oscillating piezoelectric actuator on a micronozzle.Sensors and Actuators A144, pp: 154-160, (2008) (DOI: 10.1016/j.sna.2007.12.024).
4. Wiederkehr R.S., Salvadori M.C., Degasperi F.T., & Cattani M. Development of microvalves for gas flow control in micronozzles using PVDF piezoelectric polymer.Journal of Physics: Conference Series,100, pp:052046, (2008) (DOI: 10.1088/1742-6596/100/5/052046).
5. Wiederkehr R.S., Salvadori M.C. Brugger J., Degasperi F.T. & Cattani M. Fabrication and testing of a poly(vinylidene fluoride) (PVDF) microvalve for gas flow control.Smart Materials and Structures16, pp:2302-2307, (2007) (DOI: 10.1088/0964-1726/16/6/033 ).
6. Salvadori M.C., Cattani M., Teixeira F. S., Wiederkehr R.S. & Brown I. Anisotropic resistivity of thin films due to quantum electron scattering from anisotropic surface roughness.Journal of Vacuum Science and Technology A, 25, pp:330-333 (2007) (DOI: 10.1116/1.2699254).
7. Cattani M., Vaz A.R., Wiederkehr R.S., Teixeira F.S., Salvadori M.C. & Brown I. Influence of electron scattering from morphological granularity and surface roughness on thin film electrical resistivity.Surface Review and Letters14, pp:87-91, (2007) (DOI: 10.1142/S0218625X07009116).
8. Cattani M., Salvadori M.C., Teixeira F.S., Wiederkehr R.S. & Brown I. Electrical Resistivity of Very Thin Metallic Films With Isotropic and Anisotropic Surfaces. Surface Review and Letters14, pp:345-356 (2007) (DOI: 10.1142/S0218625X07009645).
9. Salvadori M.C., Melo L.L., Vaz A.R., Wiederkehr R.S., Teixeira F.S. & Cattani M. Platinium and gold films deposited by filtered vaccum arc: morphological and cristalografic grain sizes.Surface & Coatings Technology200, pp:2965-2969 (2006) (DOI: 10.1016/j.surfcoat.2004.08.068).
10. Wiederkehr, R.S., Hoops, G.C., Aslan, M.M., Byard, C.L. & Mendes, S.B. Spectroscopic Studies in Protein Films with Highly Sensitive Single-Mode Guided-Wave Platforms. In: Proceedings of 2009 IEEE/LEOS International Conference on Optical MEMS and Nanophotonics, Clearwater Beach FL USA, The Institute of Electrical and Electronic Engineers 2009, v:1 pp: 95-96.
11. Wiederkehr R. S. , Salvadori MC , Fernandes, F.M. & Cattani M . Numerical Study of a Piezoelectric Microvalve Using Continuum Methods. In: 17th IEEE University/Governement/Industry Micro/Nano Symposium UGIM 2008, 2008, Louisville KY USA. Proceedings of the 17th IEEE University/Governement/Industry MicroNano Symposium. Piscataway/NJ/EUA : The Institute of Electrical and Electronics Engineers, 2008. v. 1. pp: 254-258.
12. Hayes C.M. , Pereira M. B. , Brangers, B.C. , Aslan M.M. , Wiederkehr R.S., Mendes, S.B. & Lake, J.H. Sub-Micron Integrated Grating Couplers for Single-Mode Planar Optical Waveguides. In: 17th IEEE University/Governement/Industry MicroNano Symposium UGIM 2008, 2008, Louisville KY USA. Proceedings of the 17 IEEE University/Governement/ Industry MicroNano Symposium. Piscataway, NJ, EUA : The Institute of Electrical and Electronics Engineers, 2008. v. 1. pp: 227-232.
13. Wiederkehr, R.S. , Salvadori M.C. , Degasperi F.T. , Cattani M . Development of Microvalves for gas flow control in micronozzles using PVDF piezoelectric polymer. In: 17th Internacional Vacuum Congress, 2007, Stockholm SWEDEN. Abstracts of the 17thInternacional Vacuum Congress (IVC17/ICSS13/ICN+T2007), 2007. v. 1. pp: 183-183.
14. Wiederkehr, R.S. , Salvadori, M.C. ; Cattani M. Desenvolviento de uma microvalvula usando o polímero piezoelétrico PVDF para controle de fluxo em uma linha de gás. In: XXX Encontro Nacional de Física da Matéria Condensada, 2007, São Lourenço MG BRAZIL. In: Abstracts of the XXX Encontro Nacional de Física da Matéria Condensada. São Paulo : SBF - Sociedade Brasileira de Física, 2007. v. 1. pp: 84-84.
15. Wiederkehr R.S. , Salvadori M.C. & Brugger J . Development of Actuators Using PVDF Piezoeletric Polymer. In: XXIX Encontro Nacional de Física da Matéria Condensada, 2006, São Lourenço MG BRAZIL. Absctracts of the XXIX Encontro Nacional de Física da Matéria Condensada, 2006.
16. Wiederkehr R.S. , Salvadori M.C. & Rossi W.. Desenvolvimento de microcanais em vidro usando a técnica de powder blasting. In: 1o Encontro Regional de Materiais, 2006, Franca SP BRAZIL. Abstracts of the 1o Encontro Regional de Materiais, 2006. v. 1.
17. Wiederkehr R. S. , Salvadori M.C., Teixeira F.S. & Cattani M. Desenvolvimento de uma microchave para abertura e fechamento de microbocais. In: Abstracts of the XXVIII Encontro Nacional de Física da Matéria Condensada, 2005, Santos SP BRAZIL. Section SUF- Filmes Finos (produção e caracterização), 2005. v. 1.
18. Vaz A. R. , Martins D.R. , Wiederkehr R.S. , Salvadori, M.C. . Deposição de ZrxC utilizando dois canhões de plasma em sincronia. In: XXVII Encontro Nacional de Física da Matéria Condensada, 2004, Poços de Caldas MG BRAZIL. Abstracts XXVII Encontro Nacional de Física da Matéria Condensada, 2004,SUF-Filmes e Nanoestruturas de Carbono, 2004. v. 1. pp: 458-459.