Education

• Licenciado en Física, University of Aachen, Germany, 1980. Undergraduate Thesis: Mössbauer effect in FeMoSu

• Doctor in Physics, University of Bayreuth, Germany, 1988. Doctoral Thesis: On dissipative states in narrow current-carrying superconducting filaments

• Postdoctoral Fellow, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela, 1990-1993

• Nonlinear dynamical systems. Superconductivity far-from-equilibrium. Transport phenomena in porous media. Disordered polymers. Transport and magnetoconductance in disordered systems. Josephson junctions arrays in presence of magnetic fields. Quantum decoherence models

• CONICIT Annual Prize for the Best Scientific Work in Physical Sciences, 1991 [Physical Review Letters 67, 2958 (1991)]
• "Andrés Bello" Prize for the Best Scientific Work in Basic Sciences, Professor's Association of the USB, 2003 [European Physical Journal B 30, 101 (2002)]

1. R. Rangel and F. Pobell, Mossbauer Effeckt messungen an FeMoS beim niedrigen temperaturen, Verh. Dtsch. Phys. Ges. 372 (1979)

2. R. Rangel and L. Kramer, Theorie von phasen Slupf-Zentrem in surpaleitenden filamenten, Verh. Dtsch. Phys. Ges. 18, 910 (1983)

3. L. Kramer and R. Rangel, Theory of dissipative states in quasi one-dimensional superconductors, Journal of Low Temperature Physics 57, 389 (1984)

4. R. Rangel and L. Kramer, Theory of periodically driven, current-carrying superconducting filaments, Journal of Low Temperature Physics 68, 85 (1987)

5. A. J. Ritger, H. Meissner, R. Rangel, and L. Kramer, Non-equilibrium contributions to the electric response of dirty superconductors, Journal of Low Temperature Physics 73, 221 (1988)

6. R. Rangel and L. Kramer, Theory of periodically driven, current-carrying superconducting filaments II. Stability limits of the homogeneous states, periodic and chaotic phase slip states, Journal of Low Temperature Physics 74, 163 (1989)

7. L. Kramer and R. Rangel, Hysteresis in the phase-slip state of superconducting filaments, Journal of Low Temperature Physics 75, 65 (1989)

8. R. Rangel and L. E. Guerrero, Chaos beyond the onset in ac-driven phase slip centers, Physica B 165&166, 1659 (1990) abstract

9. R. Rangel and L. E. Guerrero, Multifractality, multifractal phase transitions and symmetry-increasing bifurcations in ac-driven phase slip centers, Physical Review A 43, 669 (1991) abstract

10. J. F. Fernández, R. Rangel, and J. Rivero, Crossover length from invasion percolation to diffusion limited agregation in porous media, Physical Review Letters 67, 2958 (1991)

11. R. Rangel, M. Bautista, J.-C. Lin, and P. L. Taylor, Model for ferroelectric paraelectric phase transitions in random copolymers, Memorias del 3er Simposio Latinoamericano de Polímeros (Universidad Simón Bolívar, Caracas, 1992)

12. M. Bautista, R. Rangel, and P. L. Taylor, Ferromagnetic-paramagnetic phase transition in a random-bond Potts model, in: Condensed Matter Theories, Vol. 8, edited by L. Blum and F. B. Malik, p. 649, 1992

13. R. Rangel and J. Rivero, Tracing interfaces in porous media, Physica A 191, 253 (1992)

14. J.-C. Lin, P. L. Taylor, and R. Rangel, Ferromagnetic phase transition in random Potts spin chains, Physical Review E 47, 981 (1993) abstract

15. F. P. Marín and R. Rangel, Superconductivity and disorder in the narrow and wide band limit, Journal of Low Temperature Physics 92, 225 (1993)

16. R. Rangel, L. E. Guerrero, and A. Hasmy, Roughening transition in a thermal sine-Gordon system, Physica B 194-196, 411 (1994) abstract

17. R. Rangel and F. P. Marín, Interplay between the Anderson model of localization and BCS superconductivity: the finite band width transition, Physica B 194-196, 1463 (1994)

18. L. E. Guerrero and R. Rangel, Noise-induced organization in a sine-Gordon chain, Chaos, Solitons & Fractals 6, 151 (1995) abstract

19. R. Rangel, Cooperative effects due to interpore surface tension in unstable displacement in porous media, Chaos, Solitons & Fractals 6, 481 (1995)

20. R. Rangel and L. E. Guerrero, Anomalous roughening in a sine-Gordon chain, Fractals 3, 533 (1995) abstract

21. E. Medina, M. Kardar, and R. Rangel, Magnetoconductance anisotropy and interference effects in variable range hopping, Physical Review B 53, 7663 (1996) abstract, PostScript, PDF

22. R. Rangel and L. E. Guerrero, Anomalous roughening in a sine-Gordon chain, in: Fractal Geometry and Analysis, The Mandelbrot Festschrift, Curaçao 1995, edited by C. J. G. Evertsz, H.-O. Peitgen, and R. F. Voss (World Scientific, Singapore, 1996) pp. 129-135 abstract (reprint)
23. R. Rangel, A. Giménez, and M. Octavio, Dynamics and chaos of current driven two-dimensional Josephson junctions array under F₀/3 magnetic field, Physica A 261, 409 (1998)

24. R. Rangel and H. A. Guerrero, Análisis dinámico del desplazamiento estable en medios porosos, in: Simulación con Métodos Numéricos, Nuevas Tendencias y Aplicaciones, edited by O. Prado, M. Rao, and M. Cerrolaza (SVFMI, Caracas, 1998) p. AD-1
25. A. Giménez and R. Rangel, Comportamiento no universal de arreglos de uniones Josephson capacitivas, in: Simulación con Métodos Numéricos en Ingeniería y Ciencias Aplicadas, edited by N. Troyani and M. Cerrolaza (Editorial SVFMI, Caracas, 2000) p. EC-1
26. E. Medina, E. Román, and R. Rangel, Non-ergodicity and fluctuations in mesoscopic insulators: The replica cooperon and diffuson, Europhysics Letters 54, 647 (2001) abstract
27. R. Rangel and H. A. Guerrero, A model for stable displacement in porous media, in: Proceedings of LACAFLUM 2001, V Latin American and Caribbean Congress on Fluid Mechanics, edited by S. Zarea (Universidad Simón Bolívar, Caracas, 2001) p. FPM1
28. R. Rangel and E. Medina, Persistent non-ergodic fluctuations in mesoscopic insulators: The NSS model in the unitary and symplectic ensembles, European Physical Journal B 30 101 (2002) resumen, PDF
29. R. Rangel and E. Medina, Non-ergodic fluctuations of mesoscopic insulators with spin-orbit coupling, Revista Mexicana de Física 49, Supl. 3, 179 (2003)
30. R. Rangel and Sergio Rojas, Efectos de la mojabilidad o adherencia en el desplazamiento inestable entre dos fluidos miscibles en un medio poroso vía simulación Monte Carlo DLA, Ciencia 15, 77 (2007)
31. R. Rangel and S. Rojas, Montecarlo DLA type simulation of non-wetting (drainage) stable displacement in porous media, Ciencia 15, 242 (2007)
32. R. Rangel and S. Rojas, Montecarlo DLA-type simulations of wetting effects in fluid displacement in porous media, Computational Geosciences 13, 215 (2009)
33. R. Rangel and S. Rojas, Stochastic modeling of fluid displacement in porous media and its impact in oil recovery engineering, Memorias de la ULA, number 2 (2009)
34. D. Verrilli, F. P. Marín and R. Rangel, Single charge current in a normal mesoscopic region attached to superconductor leads via a coupled Poisson nonequilibrium Green function formalism, The Scientific World Journal 2014, Article ID 721671
35. R. Rangel and M. Negruz, Multidimensional washboard ratchet potentials for frustrated two-dimensional Josephson junctions arrays on square lattices, Journal of Physics A: Mathematical and Theoretical (2016)

1. Jesús Rodríguez, Uso del método de Lanczos en la solución del problema de autovalores del oscilador anarmónico cuártico, Undergraduate Thesis (Universidad Central de Venezuela, Caracas, 1989)
2. Hugo A. Guerrero, Dinámica del desplazamiento inmiscible en medio poroso, Master Degree Thesis (Universidad Central de Venezuela, Caracas, 1998)
3. Marcos Negruz, Sobre la Posibilidad de Construir un Operador Trabajo y su Trancendencia en la Física Estadística, Master Degree Thesis (Universidad Simón Bolívar, 2011)
4. David Verrilli, Cálculo de potenciales autoconsistentes en sistemas mesoscópicos, Doctoral Thesis (Universidad Central de Venezuela, 2014)