The effect of nanobubbles on Langmuir-Blodgett films

被引：2
作者：
Foudas, Anastasios W. [1 ]
Kyzas, George Z. [1 ]
Metaxa, Zoi S. [1 ]
Mitropoulos, Athanasios C. [1 ]
机构：
[1] Democritus Univ Thrace, Sch Sci, Dept Chem, Hephaestus Lab, Kavala, Greece
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2024年 / 669卷
关键词：
Bulk nanobubbles; Langmuir-Blodgett film; AFM; Stearic acid; ODA; DPPC; HYDROPHOBIC SURFACE; WATER; NANOPARTICLES; COLLAPSE; MONOLAYERS; INTERFACE; BUBBLES; PHASE; PH;
D O I：
10.1016/j.jcis.2024.04.233
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nanobubbles (NBs) are classified in two distinct categories: surface and bulk. Surface NBs are readily observed using atomic force microscopy (AFM), while the existence of bulk NBs has been a subject of debate, conflicting with the diffusion theory's predictions. Current methodologies for identifying bulk NBs yield inconclusive results. In this study, Langmuir Blodgett (LB) technique and AFM, are utilized to visualize NB imprints on anionic, cationic and zwitterionic lipid films deposited on glass-slide substrates. Our analysis of Langmuir monolayers compression isotherms reveals the impact of bulk NBs on lipid monolayer development. AFM scans of the deposited lipid films consistently show NB imprints. Notably, cationic and zwitterionic film depositions exhibit NB formations from the 1st layer, whereas in anionic films, these formations are observed only after the 3rd layer. These results suggest that the origin of these imprinted formations may be attributed to bulk NBs.
引用
收藏
页码：327 / 335
页数：9
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