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of 131
pro vyhledávání: '"de Sousa, J S"'
Surface roughness plays a crucial role in the accuracy of indentation experiments used to measure the elastic properties of materials. In this study, we present a computational analysis of how surface roughness, represented explicitly by fractal geom
Externí odkaz:
http://arxiv.org/abs/2410.17486
In this work, we investigate the dynamics of the wave packet traveling through a porous semiconductor channel, with the defects being simulated by a disordered scattering region produced by obstruction potentials. The theoretical framework is based o
Externí odkaz:
http://arxiv.org/abs/2306.06507
Autor:
Ferreira, A. E. O., de Araújo, J. L. B., Ferreira, W. P., de Sousa, J. S., Oliveira, C. L. N.
Stressed soft materials commonly present viscoelastic signatures in the form of power-law or exponential decay. Understanding the origins of such rheologic behaviors is crucial to find proper technological applications. Using an elastic network model
Externí odkaz:
http://arxiv.org/abs/2303.07145
Publikováno v:
Phys. Rev. Research 2, 033222 (2020)
Rheological responses are the most relevant features to describe soft matter. So far, such constitutive relations are still not well understood in terms of small scale properties, although this knowledge would help the design of synthetic and bio-mat
Externí odkaz:
http://arxiv.org/abs/2004.02271
Autor:
Melo, H. A., Lino, M. A., da Costa, D. R., Chaves, A., Pereira Jr., J. M., Farias, G. A., de Sousa, J. S.
Publikováno v:
Phys. Rev. B 98, 115438 (2018)
We study the addition energy spectra of phosphorene quantum dots focusing on the role of dot size, edges passivation, number of layers and dielectric constant of the substrate where the dots are deposited. We show that for sufficiently low dielectric
Externí odkaz:
http://arxiv.org/abs/1806.05731
Dielectric screening is greatly important to an accurate calculation of the exciton binding energies in two-dimensional materials. In this work, we calculate the dielectric function and 2D polarizability of multilayer (up to three) phosphorene sheets
Externí odkaz:
http://arxiv.org/abs/1708.00512
Publikováno v:
Phys. Rev. B 96, 035122 (2017)
We study the size-dependent exciton fine structure in monolayer black phosphorus quantum dots (BPQDs) deposited on different substrates (isolated, Si and SiO$_2$) using a combination of tight-binding method to calculate the single-particle states, an
Externí odkaz:
http://arxiv.org/abs/1703.06555
We present a theoretical study of the charging effects in single and double layer black phosphorus quantum dots (BPQDs) with lateral sizes of 2 nm and 3 nm. We demonstrate that the charging of BPQDs are able to store up to an $N_{max}$ electron (that
Externí odkaz:
http://arxiv.org/abs/1701.03651
Akademický článek
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Autor:
de Sousa, J. S., Santos, J. A. C., Barros, E. B., Filho, J. Mendes, Alencar, L . M. R., Cruz, W. T., Ramos, M. V.
We propose an analytical model for the force-indentation relationship in viscoelastic materials exhibiting a power law relaxation described by an exponent n, where n = 1 represents the standard viscoelastic solid (SLS) model, and n < 1 represents a f
Externí odkaz:
http://arxiv.org/abs/1610.07180