Interfacial Assembly of Graphene Oxide: From Super Elastic Interfaces to Liquid‐in‐Liquid Printing

• DOI: 10.1002/admi.202101659
• Publication Date: 2021-12-15T13:38:17Z
• Authors: Milad Kamkar; Elnaz Erfanian; Parisa Bazazi; Ahmadreza Ghaffar...; Farbod Sharif; Ganhua Xie; Aadithya Kannan; Mohammad Arjmand; S. Hossein Hejazi; Thomas P. Russell; Gerald G. Fuller; Uttandaraman Sund...
• Keywords: Elasticity; Fluidics; Interface (matter)

Abstract Tailoring the oil/water (O/W) interface is a prerequisite for structuring these two immiscible liquids into prescribed architectures, i.e., liquid‐in‐liquid printing, which an emerging area in material science. Here, assemblies of graphene oxide (GO) at O/W and air/W interfaces are characterized using wide range interfacial rheological techniques. It shown that GO nanosheets assemble interface, even extremely low concentrations as 0.04 vol%, significantly increasing elasticity or interfaces. This attributed to combined hydrophobic hydrophilic nature GO. Interfacial elastic modulus ≈1800 mN m −1 achieved, making exceptional candidates applications where stabilization indispensable. Herein, super character with capitalized all‐liquid 2D printing viscous oil, underscoring utility systems electronics, fluidic devices, controlled release systems.