Type
PreprintKAUST Department
Biological and Environmental Science and Engineering (BESE) DivisionEnvironmental Science and Engineering Program
Interfacial Lab
Interfacial Lab (iLab), Water Desalination and Reuse Center (WDRC), Division of Biological and Environmental Sciences (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
KAUST Catalysis Center (KCC)
Physical Science and Engineering (PSE) Division
Water Desalination and Reuse Research Center (WDRC)
KAUST Grant Number
BAS/1/1070-01-01Date
2021-02-12Permanent link to this record
http://hdl.handle.net/10754/667486
Metadata
Show full item recordAbstract
Liquid marbles refer to liquid droplets that are covered with a layer of non-wetting particles. They are observed in nature and have practical significance. However, a generalized framework for analyzing liquid marbles as they inflate or deflate is unavailable. The present study fills this gap by developing an analytical framework based on liquid-particle and particle-particle interactions. We demonstrate that the potential final states of evaporating liquid marbles are characterized by one of the following: (I) constant surface area, (II) particle ejection, or (III) multilayering. Based on these insights, a single-parameter evaporation model for liquid marbles is developed. Model predictions are in excellent agreement with experimental evaporation data for water liquid marbles of particle sizes ranging from 7 nanometers to 300 micrometers (over four orders of magnitude) and chemical compositions ranging from hydrophilic to superhydrophobic. These findings lay the groundwork for the rational design of liquid marble applications.Sponsors
AGJ thanks Ms. Jamilya Nauruzbayeva and Mr. Sankara Arunachalam from KAUST for their assistance with the scanning electron microscopy, Ms. Nayara Musskopf (KAUST) for her assistance with the literature review, and Mr. Thiago Reihner and Dr. Meng Shi for the fruitful discussionsHM acknowledges KAUST for funding (BAS/1/1070-01-01).