Zobrazeno 1 - 10
of 213
pro vyhledávání: '"Bettini, J."'
Autor:
Ferreira, Diego Lourençoni, Sousa, J. C. L., Maronesi, R. N., Bettini, J., Schiavon, M. A., Teixeira, Alvaro V. N. C., Silva, Andreza G.
Publikováno v:
The Journal of Chemical Physics 147, 154102 (2017)
A new analytical expression for the size-dependent bandgap of colloidal semiconductor nanocrystals is proposed within the framework of the finite-depth square-well effective mass approximation in order to provide a quantitative description of the qua
Externí odkaz:
http://arxiv.org/abs/1710.01376
Autor:
Lagos, M. J., Autreto, P. A. S., Bettini, J., Sato, F., Dantas, S. O., Galvao, D. S., Ugarte, D.
We report here an atomistic study of the mechanical deformation of AuxCu(1-x) atomic-size wires (NWs) by means of high resolution transmission electron microscopy (HRTEM) experiments. Molecular dynamics simulations were also carried out in order to o
Externí odkaz:
http://arxiv.org/abs/1502.06647
We prepared very high-coercivity cobalt ferrite nanoparticles using short-time high-energy mechanical milling. After the milling process, the coercivity of the nanoparticles reached 3.75 kOe - a value almost five times higher than that obtained for t
Externí odkaz:
http://arxiv.org/abs/1404.2965
Publikováno v:
Journal of Applied Physics; 2/14/2023, Vol. 133 Issue 6, p1-7, 7p
Autor:
Zagonel, L. F., Bettini, J., Basso, R. L. O., Paredez, P., Pinto, H., Lepienski, C. M., Alvarez, F.
Publikováno v:
Surface and Coatings Technology, Volume 207, 2012, 72-78
A comprehensive study of pulsed nitriding in AISI H13 tool steel at low temperature (400{\deg}C) is reported for several durations. X-ray diffraction results reveal that a nitrogen enriched compound (Epsilon-Fe2-3N, iron nitride) builds up on the sur
Externí odkaz:
http://arxiv.org/abs/1208.5662
Autor:
Sato, F., Moreira, A. S., Bettini, J., Coura, P. Z., Dantas, S. O., Ugarte, D., Galvao, D. S.
We report high resolution transmission electron microscopy and classical molecular dynamics simulation results of mechanically stretching copper nanowires conducting to linear atomic suspended chains (LACs) formation. In contrast with some previous e
Externí odkaz:
http://arxiv.org/abs/cond-mat/0602092
We present a study of the elongation and rupture of gold-silver alloy nanowires. Atomistic details of the evolution were derived from time-resolved atomic resolution transmission electron microscopy and molecular dynamics simulations. The results sho
Externí odkaz:
http://arxiv.org/abs/cond-mat/0601617
We have analyzed the atomic arrangements and quantum conductance of silver nanowires generated by mechanical elongation. The surface properties of Ag induce unexpected structural properties, as for example, predominance of high aspect ratio rod-like
Externí odkaz:
http://arxiv.org/abs/cond-mat/0201156
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