Open AccessLiquid Metal Phagocytosis: Intermetallic Wetting Induced Particle Internalization
Author(s) -
Tang Jianbo,
Zhao Xi,
Li Jing,
Zhou Yuan,
Liu Jing
Publication year - 2017
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.201700024
Subject(s) - wetting , internalization , intermetallic , materials science , dissolution , overlayer , liquid metal , particle (ecology) , metal , contact angle , nanotechnology , composite material , chemical physics , metallurgy , chemistry , geology , biochemistry , oceanography , alloy , cell
A biomimetic cellular‐eating phenomenon in gallium‐based liquid metal to realize particle internalization in full‐pH‐range solutions is reported. The effect, which is called liquid metal phagocytosis, represents a wet‐processing strategy to prepare various metallic liquid metal‐particle mixtures through introducing excitations such as an electrical polarization, a dissolving medium, or a sacrificial metal. A nonwetting‐to‐wetting transition resulting from surface transition and the reactive nature of the intermetallic wetting between the two metallic phases are found to be primarily responsible for such particle‐eating behavior. Theoretical study brings forward a physical picture to the problem, together with a generalized interpretation. The model developed here, which uses the macroscopic contact angle between the two metallic phases as a criterion to predict the particle internalization behavior, shows good consistency with experimental results.