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(69) Production(s) de l'année 2017
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Model gluten gels 
Auteur(s): Banc A. , Dahesh M., Wolf Marcell, Morel Marie-Hélène, Ramos L.
(Article) Publié:
Journal Of Cereal Science, vol. 75 p.175-178 (2017)
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Morphology and anisotropy of thin conductive inkjet printed lines of single-walled carbon nanotubes
Auteur(s): Torres-Canas F. J., Blanc C., Mašlík Jan, Tahir S., Izard N., Karasahin Senguel, Castellani Mauro, Dammasch Matthias, Zamora-Ledezma C., Anglaret E.
(Article) Publié:
Materials Research Express, vol. 4 p.035037 (2017)
Ref HAL: hal-01504984_v1
DOI: 10.1088/2053-1591/aa5687
WoS: 000398803200003
Exporter : BibTex | endNote
2 Citations
Résumé: We show that the properties of thin conductive inkjet printed lines of single-walled carbon nanotubes (SWCNT) can be greatly tuned, using only a few deposition parameters. The morphology, anisotropy and electrical resistivity of single-stroke printed lines are studied as a function of ink concentration and drop density. An original method based on coupled profilometry-Raman measurements is developed to determine the height, mass, orientational order and density profiles of SWCNT across the printed lines with a micrometric lateral resolution. Height profiles can be tuned from 'rail tracks' (twin parallel lines) to layers of homogeneous thickness by controlling nanotube concentration and drop density. In all samples, the nanotubes are strongly oriented parallel to the line axis at the edges of the lines, and the orientational order decreases continuously towards the center of the lines. The resistivity of 'rail tracks' is significantly larger than that of homogeneous deposits, likely because of large amounts of electrical dead-ends.
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Off-equilibrium surface tension in miscible fluids
Auteur(s): Truzzolillo D., Cipelletti L.
(Article) Publié:
Soft Matter, vol. 13 p.13-21 (2017)
Ref HAL: hal-01499947_v1
DOI: 10.1039/c6sm01026a
WoS: WOS:000395374100002
Exporter : BibTex | endNote
14 Citations
Résumé: The interfacial tension between immiscible fluids is responsible for a wealth of every-day phenomena, from the spherical shape of small drops and bubbles to the ability to walk on water of many insects.More than a century ago, physicist and mathematician D. Korteweg postulated the existence of an effective interface tension for miscible fluids, whenever a composition gradient exists, as encountered, e.g., in many flow geometries. In this mini-review, we discuss experimental work performed in the last decades that demonstrates the existence of a positive effective interface tension in a variety of systems, from molecular, near-critical liquids to complex fluids such as polymer solutions and colloidal suspensions. The various experimental strategies that have been deployed are discussed, together with their advantages and limitations. Finally, some of the key theoretical questions still open are outlined.
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