Papers by Gilles Lerondel
Journal of Applied Physics, 2002
Tb 3 Sc 2 Al 3 O 12 has been grown as a crystal showing high Faraday effect. A self-organized pat... more Tb 3 Sc 2 Al 3 O 12 has been grown as a crystal showing high Faraday effect. A self-organized pattern, of directionally formed eutectic, has been observed at the edge of the Tb3Sc2Al3O12 microcrystals grown by the micro-pulling down method. Binary (Tb3Sc2Al3O12/TbScO3) and ternary eutectic (depending on the pulling rate and the composition) are formed at the edges showing a highly packed pseudo-hexagonal spot pattern (over large areas) in the cross section and a rod pattern (length up to 200 μm) in the longitudinal section. The size of the spot pattern can be controlled by the pulling rate. The observed arrays can be suitable for various photonic devices.
HAL (Le Centre pour la Communication Scientifique Directe), Apr 14, 2018
HAL (Le Centre pour la Communication Scientifique Directe), Jul 8, 2013
International audienc
HAL (Le Centre pour la Communication Scientifique Directe), May 1, 2010
International audienc
HAL (Le Centre pour la Communication Scientifique Directe), Apr 1, 2003
International audienc
HAL (Le Centre pour la Communication Scientifique Directe), Jun 1, 2006
HAL (Le Centre pour la Communication Scientifique Directe), Nov 1, 2001
International audienc
HAL (Le Centre pour la Communication Scientifique Directe), Feb 1, 2007
HAL (Le Centre pour la Communication Scientifique Directe), Feb 24, 2012
Journal of Microscopy, Mar 1, 2003
We show experimentally that local optical field enhancement can occur at the end of an aperturele... more We show experimentally that local optical field enhancement can occur at the end of an apertureless SNOM tip illuminated by an external light source. Our approach consists in the use of a photosensitive polymer, placed in the tip near-field, to record intensity distribution in the vicinity of the tip end. The excited nanometre-size light source permits us to produce nano-patterns on the polymer surface which are then characterized by atomic force microscopy. Experimental images show the influence, on the field enhancement, of three important experimental parameters: the polarization state of the incident light, the geometry of the external illumination and the radius of curvature of the tip apex. These results are shown to be in good agreement with two-dimensional numerical calculations based on the finite-difference time-domain method. We show preliminary nanometre-size patterns created by this nanosource excited at a metallic tip extremity and discuss the potential of this approach for near-field optical lithography.
Journal of Applied Physics, Sep 7, 2016
Proceedings of SPIE, Feb 10, 2011
ECS transactions, Dec 17, 2019
In order to demonstrate the feasibility of porous TiO2 multi-layers we address the possibility of... more In order to demonstrate the feasibility of porous TiO2 multi-layers we address the possibility of color tuning of single thin films by means of varying the electrochemical anodization conditions (voltage and time). Ellipsometric data analysis using Bruggeman effective medium approximation confirms the interferometric nature of the sample color.
HAL (Le Centre pour la Communication Scientifique Directe), Sep 1, 2008
Physica E-low-dimensional Systems & Nanostructures, May 1, 2009
We report on the characterization of modal propagation in integrated waveguides using a transmiss... more We report on the characterization of modal propagation in integrated waveguides using a transmission AFM-based scanning near-field optical microscope. This technique probes the field inside an integrated waveguiding structure by measuring the change in transmission due to the local interaction with the AFM tip. In this paper, we clearly show that it is sensitive to the full spectrum of modes,
HAL (Le Centre pour la Communication Scientifique Directe), 2012
International audienc
HAL (Le Centre pour la Communication Scientifique Directe), Aug 1, 2002
International audienc
HAL (Le Centre pour la Communication Scientifique Directe), Aug 26, 2018
International audienc
International Journal of Electrochemical Science, Aug 1, 2012
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Papers by Gilles Lerondel