Structured Ultra-Flyweight Aerogels by Interfacial Complexation: Self-Assembly Enabling Multiscale Designs
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2022-05-19
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Language
en
Pages
10
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Small, Volume 18, issue 20
Abstract
The rapid co-assembly of graphene oxide (GO) nanosheets and a surfactant at the oil/water (O/W) interface is harnessed to develop a new class of soft materials comprising continuous, multilayer, interpenetrated, and tubular structures. The process uses a microfluidic approach that enables interfacial complexation of two-phase systems, herein, termed as “liquid streaming” (LS). LS is demonstrated as a general method to design multifunctional soft materials of specific hierarchical order and morphology, conveniently controlled by the nature of the oil phase and extrusion's injection pressure, print-head speed, and nozzle diameter. The as-obtained LS systems can be readily converted into ultra-flyweight aerogels displaying worm-like morphologies with multiscale porosities (micro- and macro-scaled). The presence of reduced GO nanosheets in such large surface area systems renders materials with outstanding mechanical compressibility and tailorable electrical activity. This platform for engineering soft materials and solid constructs opens up new horizons toward advanced functionality and tunability, as demonstrated here for ultralight printed conductive circuits and electromagnetic interference shields.Description
| openaire: EC/H2020/788489/EU//BioELCell
Keywords
graphene oxide, interfacial assembly, liquid streaming, ultra-flyweight aerogels
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Citation
Kamkar, M, Ghaffarkhah, A, Ajdary, R, Lu, Y, Ahmadijokani, F, Mhatre, S E, Erfanian, E, Sundararaj, U, Arjmand, M & Rojas, O J 2022, ' Structured Ultra-Flyweight Aerogels by Interfacial Complexation: Self-Assembly Enabling Multiscale Designs ', Small, vol. 18, no. 20, 2200220 . https://doi.org/10.1002/smll.202200220