文献详情
Vapor and Gas-Bubble Growth Dynamics around Laser-Irradiated, Water-Immersed Plasmonic Nanoparticles
文献类型期刊
作者Wang, Yuliang[1];Zaytsev, Mikhail E.[2];The, Hai Le[3];Eijkel, Jan C. T.[4];Zandvliet, Harold J. W.[5];Zhang, Xuehua[6];Lohse, Detlef[7]
机构
通讯作者Wang, YL (reprint author), Beihang Univ, Sch Mech Engn & Automat, Inst Robot, Beijing 100191, Peoples R China.; Wang, YL; Zhang, XH; Lohse, D (reprint author), Univ Twente, MESA Inst Nanotechnol, Phys Fluids, POB 217, NL-7500 AE Enschede, Netherlands.; Wang, YL; Zhang, XH; Lohse, D (reprint author), Univ Twente, MESA Inst Nanotechnol, JM Burgers Ctr Fluid Mech, POB 217, NL-7500 AE Enschede, Netherlands.; Wang, YL; Zhang, XH; Lohse, D (reprint author), Univ Twente, MESA Inst Nanotechnol, Phys Interfaces & Na
来源信息年:2017  卷:11  期:2  页码范围:2045-2051  
期刊信息ACS NANO影响因子和分区  ISSN:1936-0851
关键词nanoparticles; plasmonics; bubbles; vapor; dissolved gas
摘要Microbubbles produced by exposing water-immersed metallic nanoparticles to resonant light play an important role in emerging and efficient plasmonic-enhanced processes for catalytic conversion, solar energy harvesting, biomedical imaging, and cancer therapy. How do these bubbles form, and what is their gas composition? In this paper, the growth dynamics of nucleating bubbles around laser-irradiated, water-immersed Au plasmonic nanoparticles are studied to determine the exact origin of the occurrence and growth of these bubbles. The microbubbles' contact angle, footprint diameter, and radius of curvature were measured in air-equilibrated water (AEW) and degassed water (DGW) with fast imaging. Our experimental data reveals that the growth dynamics can be divided into two regimes: an initial bubble nucleation phase (regime I, < 10 ms) and, subsequently a bubble growth phase (regime II). The explosive growth in regime I is identical for AEW and DGW due to the vaporization of water. However, the slower growth in regime II is distinctly different for AEW and DGW, which is attributed to the uptake of dissolved gas expelled from the water around the hot nanoparticle. Our scaling analysis reveals that the bubble radius scales with time as R(t) alpha t(1/6) for both AEW and DGW in the initial regime I, whereas in the later regime II it scales as R(t) alpha t(1/3) for AEW and is constant for perfectly degassed. water. These scaling relations are consistent with the experiments.
收录情况SCIE(WOS:000395357300099)  EI(20171003413600)  
所属部门机械工程及自动化学院
DOI10.1021/acsnano.6b08229
学科化学综合;物理化学;材料科学:综合;纳米科技
人气指数983
浏览次数983
基金Dutch Organization for Research (NWO); Netherlands Center for Multiscale Catalytic Energy Conversion (MCEC); National Natural Science Foundation of China [51305019]; Australian Research Council [FT120100473, DP140100805]
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