Force Spectroscopy Revealed a High-Gas-Density State near the Graphite Substrate inside Surface Nanobubbles

doi:10.1021/acs.langmuir.8b03383

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Force Spectroscopy Revealed a High-Gas-Density State near the Graphite Substrate inside Surface Nanobubbles
	Wang, S ; Zhou, LM ; Wang, XY ; Wang, CL ; Dong, YM ; Zhang, Y ; Gao, YX ; Zhang, LJ ; Hu, J
刊名	LANGMUIR
	2019
卷号	35 期号:7 页码:2498—2505
关键词	NANO-BUBBLES AFM TIPS WATER NANODROPLETS INTERFACE STABILITY LAYER
ISSN号	0743-7463
DOI	10.1021/acs.langmuir.8b03383
文献子类	期刊论文
英文摘要	The absorption of gas molecules at hydrophobic surfaces may have a special state and play an important role in many processes in interfacial physics, which has been rarely considered in previous theory. In this paper, force spectroscopic experiments were performed by a nanosized AFM probe penetrated into individual surface nanobubbles and contacted with a highly ordered pyrolytic graphite (HOPG) substrate. The results showed that the adhesion force at the gas/solid interface was much smaller than that in air measured with the same AFM probe. The adhesion data were further analyzed by the van der Waals force theory, and the result implied that the gas density near the substrate inside the surface nanobubbles was about 3 orders of magnitude higher than that under the standard pressure and temperature (STP). Our MD simulation indicated that the gas layers near the substrate exhibited a high-density state inside the surface nanobubbles. This high-density state may provide new insight into the understanding of the abnormal stability and contact angle of nanobubbles on hydrophobic surfaces, and have significant impact on their applications.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31638]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 2.Shenzhen Univ, Coll Optoelect Engn, Minist Educ & Guangdong Prov, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China; 3.Shenzhen Univ, Inst Adv Study, Shenzhen 518060, Peoples R China; 4.Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China; 5.Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 6.Shanghai Normal Univ, Shanghai 200234, Peoples R China;
推荐引用方式 GB/T 7714	Wang, S,Zhou, LM,Wang, XY,et al. Force Spectroscopy Revealed a High-Gas-Density State near the Graphite Substrate inside Surface Nanobubbles[J]. LANGMUIR,2019,35(7):2498—2505.
APA	Wang, S.,Zhou, LM.,Wang, XY.,Wang, CL.,Dong, YM.,...&Hu, J.(2019).Force Spectroscopy Revealed a High-Gas-Density State near the Graphite Substrate inside Surface Nanobubbles.LANGMUIR,35(7),2498—2505.
MLA	Wang, S,et al."Force Spectroscopy Revealed a High-Gas-Density State near the Graphite Substrate inside Surface Nanobubbles".LANGMUIR 35.7(2019):2498—2505.