Sol-gel-derived nanoparticles coated liquid entities: liquid marbles, liquid plasticine, and flat interface

Lathia, R and Sen, P (2023) Sol-gel-derived nanoparticles coated liquid entities: liquid marbles, liquid plasticine, and flat interface. In: Journal of Micromechanics and Microengineering, 33 (2).

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Abstract

Particle-coated liquid entities are the basis of many useful products, such as foams, emulsions, bijels, and liquid marbles (LMs). Particles stabilized at the liquid-air interface have been widely explored during the past two decades. Such interfaces usually consist of micro- to nano-sized particles that often tend to aggregate and lose transparency as well as the smoothness of the interface. Recently, these obstacles have been overcome by using sol-gel-derived silica nanoparticle coating. Sol-gel-derived nanoparticles offer a monolayer structure at the interface with high transparency and reproducibility. This paper critically reviews three sol-gel-derived liquid entities: LMs, liquid plasticine (LP), and nanoparticle-coated flat interface. LM, a particle-covered droplet, was significantly explored for its application as a container in many biological and chemical processes. Unlike powder-derived LM, sol-gel-derived LM can be formed into any desired shape, commonly known as LP. Monolayer-covered sol-gel entities also offer a simple physical platform for investigating many fundamental properties of particle-coated interfaces. In the present review, starting from its preparation to the application, all critical aspects are summarized. Some unaddressed issues compared to the powder LM are also discussed for future research. © 2022 IOP Publishing Ltd.

Item Type:	Journal Article
Publication:	Journal of Micromechanics and Microengineering
Publisher:	Institute of Physics
Additional Information:	The copyright for this article belongs to the Institute of Physics.
Keywords:	Liquefied gases; Marble; Monolayers; Phase interfaces; Silica nanoparticles; Sol-gel process; Sol-gels; Transparency, Flat interface; Liquid marble; Liquid plasticine; Liquid/air interface; Nanoparticle coatings; Nanosized particle; Particle-coated interface; Plasticine; Silica nanoparticles; Sol'gel, Particle size
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	31 Jan 2023 07:00
Last Modified:	31 Jan 2023 07:00
URI:	https://eprints.iisc.ac.in/id/eprint/79615

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