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(94) Production(s) de l'année 2017
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Bursting mechanism of dilute emulsion-based liquid sheets: anti-drift application for agricultural sprays 
Auteur(s): Ligoure C.
Conférence invité: CROPS AND CHEMICALS EUROPE (BERLIN, DE, 2017-02-08)
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Highly active poly(3-hexylthiophene) nanostructures for photocatalysis under solar light
Auteur(s): Floresyona Dita, Goubard Fabrice, Aubert Pierre-Henri, Lampre Isabelle, Mathurin Jeremie, Dazzi Alexandre, Ghosh Srabanti, Beaunier Patricia, Brisset Francois, Remita Samy, Ramos L., Remita Hynd
(Article) Publié:
Applied Catalysis B-Environmental, vol. 209 p.23-32 (2017)
Ref HAL: hal-01553454_v1
DOI: 10.1016/j.apcatb.2017.02.069
WoS: WOS:000400584900003
Exporter : BibTex | endNote
31 Citations
Résumé: Conjugated polymer nanostructures have recently emerged as a new class of very active photocatalysts under solar light. Poly(3-hexylthiophene) (P3HT) is one of the commonly used conjugated polymers for photovoltaics applications. P3HT nanostructures synthesized in soft templates provided by hexagonal mesophases show high photocatalytic activity for degradation of pollutants under both UV and visible light. These photocatalysts are very stable even after repeated cycling. Addition of scavengers and mechanistic studies show that O2•−is the main radical responsible for degradation of phenol taken as a model pollutant. P3HT nanostructures can be easily deposited on flat supports such as quartz for photocatalytic applications avoiding a separation step by centrifugation. Most interestingly, the photocatalytic activityof these P3HT nanostructures is highly enhanced when they are supported on a solid surface opening new perspectives in photocatalytic reactors and self-cleaning surfaces.
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Selection of the tagged photons by off axis heterodyne holography in ultrasound-modulated optical tomography
Auteur(s): Gross M.
(Article) Publié:
Applied Optics, vol. 56 p.1846 - 1846 (2017)
Texte intégral en Openaccess : 
Ref HAL: hal-01474043_v1
Ref Arxiv: 1702.07378
DOI: 10.1364/AO.56.001846
WoS: 000395668400007
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
3 Citations
Résumé: Ultrasound-modulated optical tomography (UOT) is a technique that images optical contrast deep inside scattering media. Heterodyne holography is a promising tool able to detect the UOT tagged photons with high efficiency. In this work, we describe theoretically the detection of the tagged photon in heterodyne holography based UOT, show how to filter the untagged photon, and discuss the effect of shot noise. The discussion considers also speckle decorrelation. We show that optimal detection sensitivity can be reached, if the frame exposure time of the camera used to perform the holographic detection is of the order of the decorrelation time.
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