Optical reflectance and scattering studies of nucleation and growth of bubbles at a liquid-solid interface induced by pulsed laser heating

Yavaş, O.; Leiderer, Paul; Park, Hee K.; Grigoropoulos, Costas P.; Poon, Chie C.; Leung, W. P.; Do, Nhan; Tam, A. C.

doi:10.1103/physrevlett.70.1830

Cited by 99 publications

(73 citation statements)

References 9 publications

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“…Optical scattering phenomena allow both NB imaging and monitoring of its dynamics. [7][8][9][10][14][15][16][17][18] Direct imaging of slower and larger macroand micro-bubbles employed different cameras and light sources. 13,[46][47][48][49][50][51][52] There is a possibility of using a continuous light source and of capturing a short transient NB with highspeed image detectors.…”

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confidence: 99%

Experimental techniques for imaging and measuring transient vapor nanobubbles

Lukianova‐Hleb

Lapotko

2012

Applied Physics Letters

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Imaging and measuring transient vapor bubbles at nanoscale pose certain experimental challenges due to their reduced dimensions and lifetimes, especially in a single event experiment. Here, we analyze three techniques that employ optical scattering and acoustic detection in identifying and quantifying individual photothermally induced vapor nanobubbles (NBs) at a wide range of excitation energies. In optically transparent media, the best quantitative detection can be achieved by measuring the duration of the optical scattering time-response, while in an opaque media, the amplitude of the acoustic time-response well describes NBs in the absence of stress waves. Transient thermal evaporation and the generation of vapor bubbles are one of the basic processes accompanying non-stationary high-temperature heat-and mass-transfer in liquids. The science and the methods for the detection of inertial vapor bubbles of various origins were well developed for macro-and micro-sized bubbles and mainly employ their ability to emit pressure and to scatter the incident light. Recent developments in nanoscience reduced the spatial and temporal scale of vapor bubbles to nanometers and nanoseconds. [7][8][9][10]23,[27][28][29][30][31][32][33] Unlike their larger analogs, vapor nanobubbles (NBs) require much higher sensitivity and resolution of the detection methods for their imaging, quantification, and identification among other phenomena, such as transient heating and the generation of stress waves. Here, we analyze several experimental techniques for the imaging and quantitative analysis of transient vapor nanobubbles as single events and we troubleshoot some related errors. Due to the multiple biomedical applications of NBs and related phenomena, [34][35][36][37][38] it should be noted that we consider the transient events, but not the materials (particles) that are often also called nanobubbles.39, 40 We also do not consider the cavitation of preexisting bubbles that is well studied elsewhere. 41 While NBs may have various sources of energy (the heating of liquid above the boiling threshold, local rarefaction, and plasma discharge), we employed an experimental model of a single NB in water. Such a model provides maximal precision, control, and reproducibility in NB generation through the localized transient photothermal heating of liquid above the evaporation point. This was achieved through the optical excitation of individual 60 nm gold nanospheres in water with single short laser pulses (70 ps and 532 nm) at specific fluences above the NB generation threshold. We used the plasmonic conversion of optical energy into heat to control the maximal diameter and lifetime of the NBs through the fluence of a single laser pulse, as described in detail previously. [8][9][10]33 This experimental model includes an internal metal nanoparticle (NP) that acts as the source of the bubble energy during bubble generation and prevents the development of extreme temperatures and sonoluminescence at the collapse stage, 8,42 unlike "classical" bu...

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confidence: 99%

Experimental techniques for imaging and measuring transient vapor nanobubbles

Lukianova‐Hleb

Lapotko

2012

Applied Physics Letters

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“…The scattered signals, shown in Fig. 15 b, indicate the presence of nucleated gas bubbles on the silicon surface (Yavas, 1993). After a time span of about 800 ns the scattered light 284 disappears, which shows that the nucleated bubbles exist for a well-defined lifetime.…”

Section: A)mentioning

confidence: 94%

Steam Laser Cleaning of Silicon Surfaces: Laser-Induced Gas Bubble Nucleation and Efficiency Measurements

Leiderer

Mosbacher

Dobler³

et al. 2002

Laser Cleaning

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The removal of dust particles from semiconductor surfaces requires new cleaning strategies such as Steam Laser Cleaning (SLC). It is based on laser-induced explosive evaporation of a liquid layer applied on the surface. We have investigated the laser-induced nucleation and growth of gas bubbles at silicon/water, silicon/isopropanol and silver-film/water -interfaces by light scattering and surface plasmon spectroscopy. The achieved superheating of the liquid before bubble nucleation sets in strongly depends on the substrate roughness. On rough metal films it is only about 30 K in water, compared to about 150 K on smooth silicon surfaces. Isopropanol (IPA) on smooth silicon surfaces could be heated to 116°C, corresponding to a superheating of 36 K. In combination with numerical calculations it was possible to determine the heat transfer coefficients silicon-water (x = 3 ·10 7 W/m 2 K) and silicon -IPA (x = 1 ·10 7 W/m 2 K). Using optical techniques we have measured the pressure wave created by the growing bubbles and the bubble growth velocities. For a quantitative study of the efficiency of SLC we deposited spherical colloidal particles on industrial silicon wafers. We observed a sharp threshold for particle removal at 110 mJ/cm 2 (laser l = 532 nm, FWHM = 8 ns) which is independent of the size (diameter 800 nm down to 60 nm) and material of the particles and efficiencies above 90% for particle removal. On the basis of our results we discuss the validity of the existing SLC models and the perspective of the application of SLC as an industrial cleaning tool.

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“…There are certain zones in the focal spot on the target surface due to space and time power distribution over beam area: ablation ( ≥ 10 8 W/cm 2 ), melting (< 10 8 W/cm 2 ), surface heating above liquid boiling point [40]. The ablation produces a plasma-vapor-gas bubble; its collapse may create secondary gas (H 2 , O 2 ) and vapor bubbles [40][41][42][43][44]. The process generates both heated solid particles and metal droplets with a vapor cloud around them [45].…”

Section: Morphology Of Synthesized Productsmentioning

confidence: 99%

Structural, Morphological and Optical Properties of Nanoproducts of Zirconium Target Laser Ablation in Water and Aqueous SDS Solutions

Karpukhin¹,

Malikov²,

Бородина³

et al. 2017

ChChT

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Abstract.1 Structural, morphological and optical properties of nanoproducts of laser ablation of zirconium target in water and aqueous SDS solutions were investigated. Depending on experiment conditions the indicated products can appear as different crystalline phases of zirconia and organic-inorganic composites, which include SDS alkyl chains intercalated between layers of zirconium oxides or hydroxides. The formation of zirconium dioxide-based hollow nano and microstructures is demonstrated. It is suggested that ablation formed gas-vapor bubbles can serve as templets for generation of hollow structures.

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Optical reflectance and scattering studies of nucleation and growth of bubbles at a liquid-solid interface induced by pulsed laser heating

Cited by 99 publications

References 9 publications

Experimental techniques for imaging and measuring transient vapor nanobubbles

Experimental techniques for imaging and measuring transient vapor nanobubbles

Steam Laser Cleaning of Silicon Surfaces: Laser-Induced Gas Bubble Nucleation and Efficiency Measurements

Structural, Morphological and Optical Properties of Nanoproducts of Zirconium Target Laser Ablation in Water and Aqueous SDS Solutions

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