Zobrazeno 1 - 10
of 255
pro vyhledávání: '"W, Luis"'
Autor:
Mochán, W. Luis, Ortiz, Guillermo P.
We extend an efficient homogenization procedure based on a Haydock representation of the microscopic wave operator for the calculation of the macroscopic dielectric response of a periodic composite to the case of an arbitrary number of components of
Externí odkaz:
http://arxiv.org/abs/2309.11632
Autor:
Rodriguez, L. A., Schmutzler, H. C. Achitte, Dufek, M. I., Ortiz, Guillermo P., Mochán, W. Luis
The structure of the cuticle of arthropods consists of layers of microfilamentary chitin particles. The layers are stacked one on top of the other realizing a helical (Bouligand helix) pattern. This structure generates optical phenomena such as struc
Externí odkaz:
http://arxiv.org/abs/2302.09385
We present an introduction to metamaterials, some of their optical prop-erties, and examples of their uses. We develop an efficient theory for thecalculation of the macroscopic permittivity of binary systems and systemswith more components, in the no
Externí odkaz:
http://arxiv.org/abs/2111.05965
Autor:
Singla, Raksha, Mochán, W. Luis
Publikováno v:
Phys. Rev. B 104, 115419 (2021)
The second order optical response of centrosymmetric materials manifests itself mostly at their surface, being strongly suppressed in their bulk. However, the overall surface response is also suppressed in nanoparticles with a centrosymmetric geometr
Externí odkaz:
http://arxiv.org/abs/2106.06501
Autor:
Mochán, W. Luis
Publikováno v:
Diario La Uni\'on de Morelos, 2021-06-07, p. 16-17
A brief dialogue about quantum entanglement (in Spanish).
Comment: 11 pages, in Spanish. 4 figures. https://wlmb.github.io/2021/06/06/entrelazados/
Comment: 11 pages, in Spanish. 4 figures. https://wlmb.github.io/2021/06/06/entrelazados/
Externí odkaz:
http://arxiv.org/abs/2106.04342
Autor:
Castillo-Gallardo, Victor, Puente-Díaz, Luis Eduardo, Ariza-Flores, David, Pérez-Aguilar, Héctor, Mochán, W. Luis, Agarwal, Vivechana
We have designed, optimized, fabricated and characterized highly reflective quasi-omnidirectional (angular range of $0-60^\circ$) multilayered structures with a wide spectral range. Two techniques, chirping (a continuous change in thicknesses) and st
Externí odkaz:
http://arxiv.org/abs/2103.05806
Autor:
Mendoza, Bernardo S., Mochán, W. Luis
We derive a theoretical expression to calculate the Drude plasma frequency $\omega_p$ based on quantum mechanical time dependent perturbation theory. We show that in general $\omega_p^2$ should be replaced by a second rank tensor, the Drude tensor $\
Externí odkaz:
http://arxiv.org/abs/2011.04849
Autor:
Puente-Díaz, Luis Eduardo, Castillo-Gallardo, Victor, Ortiz, Guillermo P., Pérez-Huerta, José Samuel, Pérez-Aguilar, Héctor, Agarwal, Vivechana, Mochán, W. Luis
The calculation of the transfer matrix for a large non-periodic multilayered system may become unstable in the presence of absorption. We discuss the origin of this instability and we explore two methods to overcome it: the use of a total matrix to s
Externí odkaz:
http://arxiv.org/abs/2005.00943
Autor:
Missoni, Leandro L, Ortiz, Guillermo P, Ricci, María Luz Martínez, Toranzos, Victor J, Mochán, W Luis
Interfacial roughness is prevalent in 1D photonic crystals and other layered structures, but is not generally accounted for in their design nor the analysis of their optical properties due to a lack of simple theoretical approaches. We present a tran
Externí odkaz:
http://arxiv.org/abs/2004.00185
Publikováno v:
Physica Status Solidi B: Basic Solid State Physics 257, 1900557 (2020)
We present a general approach for the numerical calculation of the effective dielectric tensor of metamaterials and show that our formalism can be used to study metamaterials beyond the long wavelength limit. We consider a system composed of high ref
Externí odkaz:
http://arxiv.org/abs/1909.09719