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Browsing ISEL - Física - Posters by Subject "Wrinkly elastomers"
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- From wrinkly elastomers to Janus particles to Janus fibresPublication . Trindade, A. C.; Canejo, J. P.; Patricio, Pedro; Brogueira, P.; Teixeira, Paulo; Godinho, Maria HelenaAim is to fabricate Janus objects possessing two distinct sides, through control and manipulation of uneable sub-micron scale long-lived textures in urethane/urea elastomer films, spheres and fibres. Textures are obtained by UV-irradiation of the elastomers followed by mechanical deformation or swelling in a solvent. Standard chemistry, no complex deposition techniques required. Resulting textures investigated using AFM, SEM, SALS and POM. Interpreted by assuming that each film, sphere or fibre consists of a thin, stiff surface layer (“skin”) lying atop a thicker, softer substrate (“bulk”).