Faculty - Materials Science & Engineering

Rampi Ramprasad - Recent Publications
1. R. Ramprasad and M. Petras, Capacitive defect resonances in electromagnetic band gap crystals composed of an array of metal rods in a dielectric matrix, in preparation.

2. R. Ramprasad and M. Petras, Effective media consisting of an array of metal rods embedded in a dielectric matrix, in preparation.

3. R. Ramprasad, S. Pacheco, P. Zurcher, M. Petras and M. Miller, Design framework for magnetic material enhanced inductors using phenomenological and electromagnetic simulations, in preparation.

4. R. Ramprasad, P. Zurcher, M. Petras, M. Miller and P. Renaud, Theoretical study of ferromagnetic resonance and eddy current losses in soft magnetic nanoparticle composites at GHz frequencies, J. Appl. Phys. 2004, 96, 519.

5. R. Ramprasad, First principles study of migration of oxygen vacancies in Ta2O5, J. Appl. Phys.2004, 95, 954.

6. T. Remmel, R. Ramprasad and J. Walls, Leakage behavior and reliability assessment challenges of tantalum oxide dielectric MIM capacitors integrated into a copper IC technology, to appear in IEEE Trans. Electron Devices.

7. R. Ramprasad, Mechanisms underlying leakage currents in metal-insulator-metal (MIM) capacitors: a phenomenological study, Physica Status Solidi B. 2003, 239, 59.

8. R. Ramprasad, First principles study of oxygen vacancy induced defect levels in bulk Ta2O5, J. Appl. Phys. 2003, 94, 5609.

9. R. Ramprasad et al, Oxygen vacancy defects in bulk tantalum pentoxide: a density functional study, Microelectronics Eng. 2003, 69, 190.

10. R. Ramprasad, First principles energy and stress fields in defected materials, J. Phys.: Condes. Matter, 2002, 14, 5497.

11. R. Ramprasad, P. Zurcher, M. Petras, M. Miller and P. Renaud, Fundamental limits of soft magnetic particle composites for high frequency applications, Phys. Stat. Sol.(b) 2002, 233, 31.

12. Paul von Allmen, R. Ramprasad and L. R. C. Fonseca, Calculating the field emission current from a carbon nanotube, Phys. Stat. Sol.(b) 2001, 226, 107.

13. Victor Mammana, L. R. C. Fonseca, A. Pavani Filho, O. R. Monteiro, R. Ramprasad and P. von Allmen, Porous field emission devices based on polyimide membranes using diode and triode configurations, J. of Vac. Sci. Technol. B, 2001, 19, 537.

14. R. Ramprasad, L. R. C. Fonseca and Paul von Allmen, Calculation of the field emission current from a jellium surface using the Bardeen transfer hamiltonian method, Phys. Rev. B., 2000, 62, 5216.

15. L. R. C. Fonseca, Paul von Allmen and R. Ramprasad. Numerical simulation of the tunneling current and balistic electron effects in field emission devices, J. Appl. Phys. 2000, 87, 2533.

16. R. Ramprasad, Paul von Allmen and L. R. C. Fonseca, Contributions to the work function: a density functional study of adsorbates at graphene ribbon edges, Phys. Rev. B 1999, 60, 6023.

17. D. Liao, K. M. Glassford, R. Ramprasad and J. B. Adams, DFT-LDA study of NO adsorption on Rh(110) surface, Surf. Sci. 1998, 415, 11.

18. W. F. Schneider, K. C. Hass, R. Ramprasad and J.B. Adams, Density functional Theory study of transformations of nitrogen oxides catalyzed by Cu-exchanged zeolites, J. Phys. Chem. 1998, 102(19), 3692.

19. R. Ramprasad, K. C. Hass, W. F. Schneider, J.B. Adams, Cu-dinitrosyl species in zeolites: a density functional molecular cluster study, J. Phys. Chem. 1997, 101, 6903.

20. W. F. Schneider, K. C. Hass, R. Ramprasad and J.B. Adams, First -principles analysis of elementary steps in the catalytic decomposition of NO by Cu-exchanged zeolites, J. Phys. Chem. 1997, 101, 4353.

21. R. Ramprasad, W. F. Schneider, K. C. Hass and J.B. Adams, A theoretical study of CO and NO vibrational frquencies in Cu-water clusters and implications for Cu-exchanged zeolites, J. Phys. Chem. 1997, 101, 1940.

22. R. Ramprasad, K. M. Glassford, J. B. Adams and R. I. Masel, CO on Pd(110): Determination of the optimal adsorption site, Surf. Sci. 1996, 360, 31.

23. W. F. Schneider, K. C. Hass, R. Ramprasad and J.B. Adams, Cluster models of Cu binding and CO and NO adsorption in Cu-exchanged zeolites, J. Phys. Chem. 1996, 100, 6032.

24. J.B. Adams, A. Rockett, J. Kieffer, W. Xu, M.Nomura, K. A. Kilian, D. F. Richards and R. Ramprasad, Atomic-level computer simulation, J. Nucl. Mater. 1994, 216, 265.

25. R. Ramprasad and R. G. Hoagland, Thermodynamic properties of small zinc clusters, Modeling Simul. Mater. Sci. Eng. 1993, 1, 189.