Navegação Ciências Exatas e da Terra por Autor "Vos, Maarten"
Resultados 1-6 de 6
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Determination of thickness and composition of high-k dielectrics using high-energy electrons
Grande, Pedro Luis; Vos, Maarten; Venkatachalam, Dinesh K.; Nandi, Sanjoy K.; Elliman, R. G. (2013) [Artigo de periódico]We demonstrate the application of high-energy elastic electron backscattering to the analysis of thin (2–20 nm) HfO2 overlayers on oxidized Si substrates. The film composition and thickness are determined directly from ... -
Exploring the Barkas effect with keV-electron scattering
Grande, Pedro Luis; Vos, Maarten (2013) [Artigo de periódico]The energy loss of fast ions at close collision is mainly due to electron-ion collisions. The electrons are approximately stationary and they collidewith a fast-moving ion. Herewe study the same collision experimentally, ... -
A high-energy electron scattering study of the electronic structure and elemental composition of O-implanted Ta films used for the fabrication of memristor devices
Vos, Maarten; Grande, Pedro Luis; Nandi, Sanjoy K.; Venkatachalam, Dinesh K.; Elliman, R. G. (2013) [Artigo de periódico]High-energy electron scattering is used to investigate Ta films implanted with 10 keV O ions. These films are of interest as they have been used for the fabrication of memristors. High-energy electron scattering is used ... -
Neutralization and wake effects on the Coulomb explosion of swift H2+ ions traversing thin films
Rosa, Lucio Flavio dos Santos; Grande, Pedro Luis; Dias, Johnny Ferraz; Fadanelli Filho, Raul Carlos; Vos, Maarten (2015) [Artigo de periódico]The Coulomb explosion of small cluster beams can be used to measure the dwell time of fragments traversing amorphous films. Therefore, the thickness of thin films can be obtainedwith the so-called Coulomb depth profiling ... -
Nonlinear stopping effects of slow ions in a no-free-electron system : titanium nitride
Matias, Flávio; Grande, Pedro Luis; Vos, Maarten; Koval, Peter; Koval, Natalia; Arista, Nestor (2019) [Artigo de periódico]A recent experimental study of the energy losses of various ions in titanium nitride, in the low-energy range [M.A.Sortica et al. , Sci. Rep. 9 , 176 ( 2019 )], showed a striking departure of the measured values from those ... -
Stopping and straggling of 60–250-keV backscattered protons on nanometric Pt films
Selau, Felipe Ferreira; Trombini, Henrique; Marmitt, Gabriel Guterres; Andrade, Antonio Marcos Helgueira de; Morais, Jonder; Grande, Pedro Luis; Vellame, Igor Alencar; Vos, Maarten; Heller, René (2020) [Artigo de periódico]The stopping power and straggling of backscattered protons on nanometric Pt films were measured at low to medium energies (60–250 keV) by using the medium-energy ion scattering technique. The stopping power results are in ...