Roosevelt Droppa Jr.
Roosevelt Droppa Jr.
Professor associado, Universidade Federal do ABC
Verified email at
Cited by
Cited by
X-ray powder diffraction beamline at D10B of LNLS: application to the Ba2FeReO6 double perovskite
FF Ferreira, E Granado, W Carvalho Jr, SW Kycia, D Bruno, R Droppa Jr
Journal of synchrotron radiation 13 (1), 46-53, 2006
Incorporation of nitrogen in carbon nanotubes
R Droppa Jr, P Hammer, ACM Carvalho, MC Dos Santos, F Alvarez
Journal of non-crystalline solids 299, 874-879, 2002
Influence of the process temperature on the steel microstructure and hardening in pulsed plasma nitriding
LF Zagonel, CA Figueroa, R Droppa Jr, F Alvarez
Surface and Coatings Technology 201 (1), 452-457, 2006
Comprehensive spectroscopic study of nitrogenated carbon nanotubes
R Droppa Jr, CTM Ribeiro, AR Zanatta, MC Dos Santos, F Alvarez
Physical Review B 69 (4), 045405, 2004
Comparative study on the bonding structure of hydrogenated and hydrogen free carbon nitride films with high N content
P Hammer, RG Lacerda, R Droppa Jr, F Alvarez
Diamond and Related Materials 9 (3), 577-581, 2000
Stability of small carbon-nitride heterofullerenes
D Schultz, R Droppa Jr, F Alvarez, MC Dos Santos
Physical review letters 90 (1), 015501, 2003
Dynamics of water intercalation fronts in a nano-layered synthetic silicate: A synchrotron X-ray scattering study
G Løvoll, B Sandnes, Y Méheust, KJ Måløy, JO Fossum, GJ Da Silva, ...
Physica B: Condensed Matter 370 (1-4), 90-98, 2005
Continuous water adsorption states promoted by Ni2+ confined in a synthetic smectite
MAS Altoé, L Michels, EC dos Santos, R Droppa Jr, G Grassi, L Ribeiro, ...
Applied Clay Science 123, 83-91, 2016
A comprehensive nitriding study by low energy ion beam implantation on stainless steel
CA Figueroa, D Wisnivesky, P Hammer, RG Lacerda, R Droppa Jr, ...
Surface and Coatings Technology 146, 405-409, 2001
EXAFS and XRD studies in synthetic Ni-fluorohectorite
L Michels, L Ribeiro, MSP Mundim, MH Sousa, R Droppa Jr, JO Fossum, ...
Applied Clay Science 96, 60-66, 2014
Effect of bombarding steel with Xe+ ions on the surface nanostructure and on pulsed plasma nitriding process
S Cucatti, EA Ochoa, M Morales, R Droppa Jr, J Garcia, HC Pinto, ...
Materials Chemistry and Physics 149, 261-269, 2015
Effect of bombarding steel with Xe ions on the surface nanostructure and on pulsed plasma nitriding process
S Cucatti, EA Ochoa, M Morales, R Droppa Jr, J Garcia, HC Pinto, ...
arXiv preprint arXiv:1411.7281, 2014
Water vapor diffusive transport in a smectite clay: Cationic control of normal versus anomalous diffusion
L Michels, Y Méheust, MAS Altoe, ÉC Dos Santos, H Hemmen, ...
Physical Review E 99 (1), 013102, 2019
Self-organized nickel nanoparticles on nanostructured silicon substrate intermediated by a titanium oxynitride (TiNxOy) interface
M Morales, R Droppa, SRS De Mello, CA Figueroa, AR Zanatta, F Alvarez
AIP advances 8 (1), 2018
Influence of substrate pre-treatments by Xe+ ion bombardment and plasma nitriding on the behavior of TiN coatings deposited by plasma reactive sputtering on 100Cr6 steel
S Vales, P Brito, FAG Pineda, EA Ochoa, R Droppa Jr, J Garcia, ...
Materials Chemistry and Physics 177, 156-163, 2016
Cation exchange dynamics confined in a synthetic clay mineral
G Grassi, L Michels, Z Rozynek, MAS Altoé, EC dos Santos, ...
The European Physical Journal Special Topics 223 (9), 1883-1893, 2014
Influence of ion-beam bombardment on the physical properties of 100Cr6 steel
R Droppa Jr, HC Pinto, J Garcia, EA Ochoa, M Morales, S Cucatti, ...
Materials Chemistry and Physics 147 (1), 105-112, 2014
Self-organized 2D Ni particles deposited on titanium oxynitride-coated Si sculpted by a low energy ion beam
M Morales, RB Merlo, R Droppa, F Alvarez
Journal of Physics D: Applied Physics 47 (19), 195303, 2014
The effect of noble gas bombarding on nitrogen diffusion in steel
EA Ochoa, R Droppa, RLO Basso, M Morales, S Cucatti, LF Zagonel, ...
Materials Chemistry and Physics 143 (1), 116-123, 2013
Using synchrotron X-ray scattering to study the diffusion of water in a weakly-hydrated clay sample
Y Méheust, B Sandnes, G Løvoll, KJ Måløy, JO Fossum, GJ da Silva, ...
Clay science 12 (Supplement2), 66-70, 2006
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