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Author

Adolf Canillas

Other affiliations: École Polytechnique
Bio: Adolf Canillas is an academic researcher from University of Barcelona. The author has contributed to research in topics: Ellipsometry & Thin film. The author has an hindex of 21, co-authored 78 publications receiving 1406 citations. Previous affiliations of Adolf Canillas include École Polytechnique.


Papers
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Journal ArticleDOI
TL;DR: The equations to calculate the six independent polarization effects of an arbitrary normalized Mueller-Jones matrix corresponding to homogenous media are presented and a comparison between this method and other inversion procedures is discussed.
Abstract: In this Letter we present the equations to calculate the six independent polarization effects of an arbitrary normalized Mueller-Jones matrix corresponding to homogenous media. A comparison between this method and other inversion procedures is discussed, and the application of the analytic inversion to experimental Mueller matrices is illustrated.

99 citations

Journal ArticleDOI
TL;DR: A new Mueller matrix (MM) microscope is described that generalizes and makes quantitative the polarized light microscopy technique and can be applied to any visible wavelength.
Abstract: In this paper we describe a new Mueller matrix (MM) microscope that generalizes and makes quantitative the polarized light microscopy technique. In this instrument all the elements of the MU are simultaneously determined from the analysis in the frequency domain of the time-dependent intensity of the light beam at every pixel of the camera. The variations in intensity are created by the two compensators continuously rotating at different angular frequencies. A typical measurement is completed in a little over one minute and it can be applied to any visible wavelength. Some examples are presented to demonstrate the capabilities of the instrument.

99 citations

Journal ArticleDOI
TL;DR: In this article, a numerical procedure for solving the mathematical equations that define the effective medium for a mixture of materials is presented, and the basic idea is to transform the inherent complex root-finding problem into a minimization task in real space.

83 citations

Journal ArticleDOI
TL;DR: The optical activity of fabricated metallic nanostructures is investigated by complete polarimetry and it is shown that subtle planar dissymmetries in gammadia are sufficient to generate asymmetric transmission of circular polarized light.
Abstract: The optical activity of fabricated metallic nanostructures is investigated by complete polarimetry. While lattices decorated with nanoscale gammadia etched in thin metallic films have been described as two dimensional, planar nanostructures, they are better described as quasi-planar structures with some three dimensional character. We find that the optical activity of these structures arises not only from the dissymmetric backing by a substrate but, more importantly, from the selective rounding of the nanostructure edges. A true chiroptical response in the far-field is only allowed when the gammadia contain these non-planar features. This is demonstrated by polarimetric measurements in conjunction with electrodynamical simulations based on the discrete dipole approximation that consider non-ideal gammadia. It is also shown that subtle planar dissymmetries in gammadia are sufficient to generate asymmetric transmission of circular polarized light.

65 citations

Journal ArticleDOI
TL;DR: A correlation between chiral flows in different regions of circular and square stirred cuvettes and the emergence of true circular dichroism is demonstrated, suggesting that the flask shape and the controlled addition of reagents in defined regions of the stirred solutions may exert a control in self-assembly processes.
Abstract: Hydrodynamic forces in stirred solutions induce chirality in some supramolecular species of J-aggregates, as detected at the level of the electronic transition. However, the mechanism that explains the phenomenon remains to be elucidated, although the basic effect of hydrodynamic gradients of the shear rate is most probably the folding or bending of the nanoparticles in solution. Herein, we demonstrate a correlation between chiral flows in different regions of circular and square stirred cuvettes and the emergence of true circular dichroism (CD). The results show that chaotic flows lead to a racemic mixture of chiral shaped supramolecular species, and vortical flows to scalemic mixtures. In a magnetically stirred flask the descending and ascending flows are of different chiral sign and the CD reading depends on the weighting of these two flows of inverse chiral sign. The effect of the gradient of shear rates of the flows leading to chiral shape objects depends on the shape of the cuvette, which suggests that the flask shape and the controlled addition of reagents in defined regions of the stirred solutions may exert a control in self-assembly processes.

65 citations


Cited by
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28 Jul 2005
TL;DR: PfPMP1)与感染红细胞、树突状组胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作�ly.
Abstract: 抗原变异可使得多种致病微生物易于逃避宿主免疫应答。表达在感染红细胞表面的恶性疟原虫红细胞表面蛋白1(PfPMP1)与感染红细胞、内皮细胞、树突状细胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作用。每个单倍体基因组var基因家族编码约60种成员,通过启动转录不同的var基因变异体为抗原变异提供了分子基础。

18,940 citations

Journal ArticleDOI
TL;DR: In this article, the progress that has taken place since 1993 with regard to film deposition, characterization by physical and chemical techniques, optical properties, as well as electrochromic device assembly and performance is reviewed.

1,304 citations

Book
01 Jan 2006
TL;DR: In this paper, the nature and properties of surface-enhanced vibrational spectra of molecules adsorbed on surfaces that can enhance the absorption and the emission of electromagnetic radiation are discussed.
Abstract: The nature and properties of surface-enhanced vibrational spectra of molecules adsorbed on surfaces that can enhance the absorption and the emission of electromagnetic radiation are discussed. Examples of surface-enhanced resonant Raman scattering, surface-enhanced Raman scattering in the near-infrared and surface-enhanced infrared are given. The rough surfaces used are metal island films coated with a nanometric organic film using the Langmuir-Blodgett technique or deposited by vacuum evaporation.

846 citations

Journal ArticleDOI
TL;DR: The BOLS correlation mechanism has been initiated and intensively verified as discussed by the authors, which has enabled the tunability of a variety of properties of a nanosolid to be universally reconciled to the effect of bond order deficiency of atoms at sites surrounding defects or near the surface edges of the nano-material.

775 citations