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Micrometric Monodisperse Solid Foams as Complete Photonic Bandgap Materials

Maimouni, Ilham, Morvaridi, Maryam, Russo, Maria, Lui, Gianluc, Morozov, Konstantin, Cossy, Janine, Florescu, Marian, Labousse, Matthieu and Tabeling, Patrick (2020) Micrometric Monodisperse Solid Foams as Complete Photonic Bandgap Materials ACS Applied Materials & Interfaces, 12 (28). pp. 32061-32068.

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Solid foams with micrometric pores are used in different fields (filtering, 3D cell culture, etc.), but today, controlling their foam geometry at the pore level, their internal structure, and the monodispersity, along with their mechanical properties, is still a challenge. Existing attempts to create such foams suffer either from slow speed or size limitations (above 80 μm). In this work, by using a temperature-regulated microfluidic process, 3D solid foams with highly monodisperse open pores (PDI lower than 5%), with sizes ranging from 5 to 400 μm and stiffnesses spanning 2 orders of magnitude, are created for the first time. These features open the way for exciting applications, in cell culture, filtering, optics, etc. Here, the focus is set on photonics. Numerically, these foams are shown to open a 3D complete photonic bandgap, with a critical index of 2.80, thus compatible with the use of rutile TiO2. In the field of photonics, such structures represent the first physically realizable self-assembled FCC (face-centered cubic) structure that possesses this functionality.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Maimouni, Ilham
Morvaridi, Maryam
Russo, Maria
Morozov, Konstantin
Cossy, Janine
Labousse, Matthieu
Tabeling, Patrick
Date : 12 June 2020
Funders : EPSRC, European Union Horizon 2020
DOI : 10.1021/acsami.0c04031
Grant Title : EPSRC Strategic Equipment Grant
Copyright Disclaimer : © 2020 American Chemical Society
Uncontrolled Keywords : 3D solid foams, self-assembly, microfluidics, polymers, photonic band gaps
Additional Information : Embargo OK Metadata OK No Further Action
Depositing User : James Marshall
Date Deposited : 05 Aug 2020 08:55
Last Modified : 05 Aug 2020 08:55

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