Photoinduced doughnut-shaped nanostructures

Dubrovkin, Alexander M.; Barille, Régis; Ortyl, Ewelina; Zielinska, S.

doi:10.1016/j.cplett.2014.03.021

Cited by 7 publications

(3 citation statements)

References 28 publications

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“…If azomaterials properties are coupled with other fabrication techniques, micro/nano structures of different shape and size can be realized [11,134,135] e.g. parallel groves [32,107,112,136], array of microporous [137][138][139][140][141] and hemispherical caps [142,143], whose geometry can be successively modified. Indeed, this technique allows to produce very sophisticated micro/nanoarchitecture that would be difficult to attain with other methods [12,107,144,145].…”

Section: Directional Photofluidization Lithography (Dpl)mentioning

confidence: 99%

Photonic applications of azobenzene molecules embedded in amorphous polymer

2020

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The incorporation of azobenzene chromophores into polymer systems gives rise to a number of unique effects under UV and visible light irradiation. The light-driven isomerization of the azobenzene element acts as a light-to-mechanical energy converter, translating the nanoscopic structural movement of the isomerization azobenzene into macroscopic topographic film modulation in the form of surface relief. This review focuses on the study of reversible changes in shape in various systems incorporating azobenzene, including large-scale superficial photo-patterned glassy materials, light-driven reshaping of tridimensional superficial azo-textures and contractions of stimuli-responsive liquid crystalline networks (LCNs). Further, promising applications of azo systems are investigated as smart biointerfaces able to mimic time-varying biological systems.

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Section: Directional Photofluidization Lithography (Dpl)mentioning

confidence: 99%

Photonic applications of azobenzene molecules embedded in amorphous polymer

2020

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“…Incoherent light can indifferently propel the photo-patterning process, in comparison with a laser illumination. Using this technique, it is possible to modify the holes and their surrounding areas formed on the surface evenly and to induce a polymer growth due to a mass transport [21].…”

Section: Multiple Trans−cis−transphoto-isomerization Cycles Of Chromo...mentioning

confidence: 99%

A new method for patterning azopolymer thin film surfaces

et al. 2017

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Abstract:We present a simple bottom-up approach via an incoherent unpolarized illumination and the choice of a solvent-droplet-induced-dewetting method to photoinducenano doughnuts on the surface of azopolymer thin films. We demonstrate that doughnut-shaped nanostructures can be formed and tailored with a wide range of typical sizes, thus providing a rich field of applications using surface photo-patterning. Furthermore, due to the presence of highly photoactive azobenzene derivative in the material, illumination of these nanostructures by a polarized laser light shows the possibility of a further growth and reshaping opening the way for fundamental studies of size-dependent scaling laws of optical properties and possible fabrication of nano-reactor or nano-trap patterns.

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“…[1][2][3][4][5] Such problems occur also in many other analytical measurement techniques. 6,7 Some efforts are undertaken, involving the modification of electrode, measurement procedure, chemical experimental conditions (e.g. composition of the electrolyte or pH), which goal is optimization of the experiment.…”

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confidence: 99%

Voltammetric Determination of Ternary Phenolic Antioxidants Mixtures with Peaks Separation by ICA

Górski

Sordoń

Jakubowska

2016

J. Electrochem. Soc.

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The paper refers to the problem of separation of the overlapping signals in voltammetry, which was resolved by the assumption that the univariate calibration models for the individual analytes are requested. It was demonstrated that Independent Components Analysis (ICA) is an effective tool for reconstruction of the successive signals shape, peak positions and also the basic validation parameters meet the typical criteria. Simulation approach enabled selection of the optimal set of mixtures, necessary for the effective operation of the ICA and high predictive ability of the calibration models. It was proved that the triples of analytes chosen from the list of four phenolic acids, ie. caffeic of 9.9 – 87.6 μM, ferulic of 5.9 – 52.6 μM, syringic of 9.9 – 87.3 μM, and vanillic acid of 13.9 – 122.7 μM may be successfully simultaneously determined by differential pulse voltammetry on boron doped diamond electrode, excluding samples at concentrations close to the lower limit of linearity.

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Photoinduced doughnut-shaped nanostructures

Cited by 7 publications

References 28 publications

Photonic applications of azobenzene molecules embedded in amorphous polymer

Photonic applications of azobenzene molecules embedded in amorphous polymer

A new method for patterning azopolymer thin film surfaces

Voltammetric Determination of Ternary Phenolic Antioxidants Mixtures with Peaks Separation by ICA

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