Optical transmission measurements of explosive boiling and liftoff of a layer of micron-scale water droplets from a KrF laser-heated Si substrate

Kudryashov, S. I.; Allen, Susan D.

doi:10.1063/1.1555272

Cited by 26 publications

(27 citation statements)

References 19 publications

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“…The contact angle of the droplet on a nanostructured substrate appeared to follow typical electrowetting behavior [3,11,14] with the cos u proportional to V 2 (see Figure 4). However, it showed no saturation for the whole range of investigated voltages in contrast to a rapid saturation on an identically treated planar substrate (see Figure 4).…”

Section: Introductionmentioning

confidence: 95%

Electrically tunable superhydrophobic nanostructured surfaces

Krupenkin¹,

Taylor²,

Kolodner³

et al. 2005

Bell Labs Tech. J.

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known for some time [6,8,13], the first successful attempts to demonstrate effective dynamic tuning of superhydrophobic surfaces have been reported only recently [9,22].In this work, we summarize our recent results [9] on electrically tunable nanostructured surfaces that allow fully reversible, electrically controlled tuning of the liquid-solid interaction that covers the widest possible range-from strong superhydrophobic behavior to nearly complete wetting.

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Section: Introductionmentioning

confidence: 95%

Electrically tunable superhydrophobic nanostructured surfaces

Krupenkin¹,

Taylor²,

Kolodner³

et al. 2005

Bell Labs Tech. J.

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“…Similarly, small clusters of alumina particles of radii R ¼ 0.3-1 mm (Buehler micro-polish) were deposited in the same way on similar Si wafers. An ETM dosing system described elsewhere (Kudryashov & Allen, 2003, 2004a) was used to deposit 3-6 cm wide (depending on the dosing time, t dose ) ETM layers on the Si substrates mounted on a three-dimensional stage. ETM dosing was achieved by using pressurized N 2 gas with a triggered valve connected to a bubbler immersed in a flask with preheated ETM.…”

Section: Methodsmentioning

confidence: 99%

“…The transient multi-MPa pressure of the superheated ETM may be applied underneath the contaminant particles as a ''vapor piston'' force (Lu et al, 1999(Lu et al, , 2000Zheng et al, 2001), while the lifting-off ETM also exerts a viscous ''drag'' force on the particles (Kudryashov & Allen, 2002b, 2005. Lift-off distances for submm ETM layers may approach sub-mm magnitudes (Kudryashov & Allen, 2003, 2004b, enabling the removal of contaminant particles sufficiently far away from the substrate to prevent redeposition irrespective of their size. Importantly, F B , being a function of the ETM, and related steam laser cleaning threshold, F SLC , are usually much lower than DLC thresholds for sub-100 nm model particle contaminants ( Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Studies of Laser Cleaning Mechanisms for Submicrometer Particulates on Si Surfaces

Kudryashov

Allen

Shukla

2006

Particulate Science and Technology

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Submicrometer (0.1-1 lm) polystyrene and alumina particles were removed by single-shot nanosecond 248 nm KrF laser radiation from Si wafer surfaces with or without pre-deposited thin liquid layers. Nearly complete (>90%) single-shot laser cleaning has been achieved for combinations of polystyrene and alumina particles, respectively, with 2-propanol and water used as liquid energy transfer media, while for other combinations cleaning was absent or incomplete. Time-resolved optical microscopy studies have for the first time revealed important transient microscopic interactions between these particles and Si substrates in the pre-deposited micronthick liquid layers, resulting, in some of these cases, in significantly reduced particle-substrate coupling. The visualization results give insight into microscopic particle removal mechanisms relevant to our laser cleaning experimental conditions, which are discussed along with their theoretical analysis. Theoretical modeling has been performed to interpret these experimental results and to provide insight into microscopic particle removal mechanisms.

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“…During superheating, if the superhot layer is irradiated by a high-power short-pulsed laser and its temperature reaches the bronze bond thermodynamic critical temperature 0.90T tc (T tc is the bronze thermodynamic critical temperature), there will be a large outbreak of nucleation. If, at this time, there are disturbances, a more violent phase explosion phenomenon will occur [11,[13][14][15][16][17]. During the grinding wheel laser dressing process, the existence of a super-hot layer will lead to the occurrence of a phase explosion.…”

Section: After the Bronze Bond Is Meltedmentioning

confidence: 99%

The mechanism and application of bronze-bond diamond grinding wheel pulsed laser dressing based on phase explosion

Cai

Chen

Zhang

et al. 2015

Int J Adv Manuf Technol

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This paper presents a theoretical analysis of the surface bond removal mechanism for bronze-bond diamond grinding wheels using a pulsed laser. For the first time, the existence of a phase explosion phenomenon during the process of grinding wheel laser dressing is proposed, and the negative effects of a phase explosion on laser dressing are analyzed. Additionally, a theoretical study on phase explosion is conducted. The mechanism of bronze-bond diamond grinding wheel laser dressing is improved, and theoretical guidance for bronze-bond diamond grinding wheel laser dressing is provided. In the experiment, the processing parameters of the laser during phase explosion are studied, and a grinding test under the corresponding conditions is conducted. A highspeed camera is used to observe phase explosion in the laser dressing process. An ultra-depth 3-D microscope system is used to observe the topography of the bronze-bond diamond grinding wheel after dressing and grinding as well as the bronze wheel surface quality. It is concluded that to avoid phase explosion from occurring in the laser dressing of the bronze-bond grinding wheel, chip space around the bond must exist for the abrasive particle protrusions. The processing parameters of laser dressing under certain condition are optimized, and the desired dressing effect is achieved.

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Optical transmission measurements of explosive boiling and liftoff of a layer of micron-scale water droplets from a KrF laser-heated Si substrate

Cited by 26 publications

References 19 publications

Electrically tunable superhydrophobic nanostructured surfaces

Electrically tunable superhydrophobic nanostructured surfaces

Experimental and Theoretical Studies of Laser Cleaning Mechanisms for Submicrometer Particulates on Si Surfaces

The mechanism and application of bronze-bond diamond grinding wheel pulsed laser dressing based on phase explosion

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