Self-Induced Diffraction Grating Storage in Polymer Films

Kandjani, S. Ahmadi; Barille, Régis; Dabos‐Seignon, Sylvie; Nunzi, Jean‐Michel; Ortyl, Ewelina; Kucharski, S.

doi:10.1080/15421400500383329

Cited by 11 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Above 760 mW cm −2 input beam intensity, the polymer film could be damaged and we did not exceed this limit. Note that figure 2 is very close to the already published data [10]. In fact, the experiments have been repeated using the same material but with an optical detector which has been improved in order to avoid scattered light.…”

Section: Evolution Of the Srgsupporting

confidence: 81%

“…The spontaneous arising of a pattern, related to the growth of counterpropagating waves (13), can be demonstrated from equations (10) and (18) above, by means of a perturbative approach. This is the aim of the present section.…”

Section: Fourier Analysis and Spontaneous Patterningmentioning

confidence: 99%

“…Further, we report the Fourier expansions ( 19) and ( 21) into the diffusion equation (10), which yields…”

Section: Fourier Components Of the Model Equationmentioning

confidence: 99%

See 2 more Smart Citations

Spontaneous formation of optically induced surface relief gratings

Leblond

Barille

Ahmadi-Kandjani

et al. 2009

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

We develop a model based on Fick's law of diffusion as a phenomenological description of the molecular motion, and on the coupled mode theory, to describe single-beam surface relief grating formation in azopolymers thin films. The model allows to explain the mechanism of spontaneous patterning, and self-organization. It allows to compute the surface relief profile and its evolution with good agreement with experiments.

show abstract

Section: Evolution Of the Srgsupporting

confidence: 81%

Section: Fourier Analysis and Spontaneous Patterningmentioning

confidence: 99%

See 1 more Smart Citation

Spontaneous formation of optically induced surface relief gratings

Leblond

Barille

Ahmadi-Kandjani

et al. 2009

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

show abstract

“…Their characteristics are attractive for the potential applications in engineering and medicine, for example, in the reduction of friction in micro-motors, 1 the prevention of bacterial adhesion onto orthopaedic implants, 2 the improvement of efficiency of solar cells 3 and optical data-storage devices. 4 The textures of self-structured surfaces can be formed by different processes. 5,6 Two most popular approaches are solution/gas phase deposition and lateral structuring.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Texture analysis of self-structured surfaces in formation process using directional fractal signature method

Wolski

Podsiadło

Stachowiak

2014

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

The range of applications for self-structured surfaces is growing. They are used to increase wear resistance, reduce friction and corrosion, and also used in design of biosensors and innovative coatings. However, to effectively manufacture these surfaces on a large scale, methods for their texture characterisation/description are required. Currently, we do not have any effective and accurate methods to characterise these surfaces. This is severely hindering their wider applications and further developments in this area. The texture of self-structured surfaces, like any texture of any other surface, would need to be characterised/described during the formation (production) process and for specific applications. During formation process, the self-structured surfaces change texture roughness and directionality. These changes are gradual, complex and occur over many scales. In this work, a recently developed method, called an augmented blanket with rotating grid method, is applied to microscopic images of real self-structured surface textures. Groups of isotropic and anisotropic texture images were analysed. In the first group the textures were formed through the growth of nanorods on indium oxide substrates while in another the laser beam irradiation was used to treat the polymer films. Results obtained showed that the augmented blanket with rotating grid method accurately quantifies minute decreases in roughness of isotropic surfaces and changes in roughness with directions of anisotropic surfaces observed during the formation process.

show abstract