An axisymmetric interfacial tracking model for melting and resolidification in a thin metal film irradiated by ultrashort pulse lasers

Baheti, Kapil; Huang, Jing; Chen, J.K.; Zhang, Kun

doi:10.1016/j.ijthermalsci.2010.09.003

Cited by 12 publications

(3 citation statements)

References 23 publications

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“…Femtosecond (fs) laser interactions with thin metal films have received intensive attention in the past two decades due to their unique characteristics in material processing (Baheti, 2010). To date, it has been possible to generate almost any arbitrary pulse shapes by recent development of optical devices.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer in Metal Films Irradiated by Combined Nanosecond Laser Pulse and Femtosecond Pulse Train

Chen¹,

Ren²,

Zhang³

2012

Frontiers in Heat and Mass Transfer

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Heat transfer in a copper film irradiated by a femtosecond (fs) laser pulse train and by an integrated dual laser beam of a nanosecond pulse with a fspulse train was studied using the semi-classical two-temperature model. The critical point model with three Lorentzian terms was employed to characterize transient optical properties for the laser energy deposition. The effects of pulse number and separation time on the thermal response were investigated. The results showed that with the same total energy in a fs-pulse train, more pulses for shorter separation time, e.g., 1 ps, and fewer pulses for longer separation time, e.g., 100 ps, can achieve higher lattice temperature. For a dual laser beam, the lattice temperature can be increased by setting the pulse separation time as short as possible, e.g., 1 ps.

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Section: Introductionmentioning

confidence: 99%

Heat Transfer in Metal Films Irradiated by Combined Nanosecond Laser Pulse and Femtosecond Pulse Train

Chen¹,

Ren²,

Zhang³

2012

Frontiers in Heat and Mass Transfer

Self Cite

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“…If the above condition is not met, a multi-dimensional model is needed. The authors recently proposed an axisymmetric model for melting and resilification (Baheti et al, 2010). To accurately describe the entire thermal process of an ultrashort pulsed laser interaction with a metal film, vaporization should also be taken into account if existing.…”

Section: Introductionmentioning

confidence: 99%

An Axisymmetric Model for Solid-Liquid-Vapor Phase Change in Thin Metal Films Induced by An Ultrashort Laser Pulse

Huang¹,

Baheti²,

Chen³

et al. 2011

Frontiers in Heat and Mass Transfer

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An axisymmetric model for thermal transport in thin metal films irradiated by an ultrashort laser pulse was developed. The superheating phenomena including preheating, melting, vaporization and re-solidification were modeled and analyzed. Together with the energy balance, nucleation dynamics was employed iteratively to track the solid-liquid interface and the gas kinetics law was used iteratively to track the liquid-vapor interface. The numerical results showed that higher laser fluence and shorter pulse width lead to higher interfacial temperature, larger melting and ablation depths. A simplified 1-D model could overestimate temperature response and ablation depth due to the omission of radial heat conduction.

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“…Thus, an analysis of kinetic superheating of materials should take several physical processes and their couplings into account. Recently, there has been some research and suggested models [41,92,38,42,40] [94,95]. The aluminum oxide has a lower thermal expansion coefficient than the aluminum core, so the compressive pressure in the core and the tensile hoop stress in the oxide are generated due to volumetric expansion during heating before melting [96].…”

Section: -D Homogeneous Meltingmentioning

confidence: 99%

A multiphysics phase field model on melting and kinetic superheating of aluminum nanolayer and nanoparticle

Hwang

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An axisymmetric interfacial tracking model for melting and resolidification in a thin metal film irradiated by ultrashort pulse lasers

Cited by 12 publications

References 23 publications

Heat Transfer in Metal Films Irradiated by Combined Nanosecond Laser Pulse and Femtosecond Pulse Train

Heat Transfer in Metal Films Irradiated by Combined Nanosecond Laser Pulse and Femtosecond Pulse Train

An Axisymmetric Model for Solid-Liquid-Vapor Phase Change in Thin Metal Films Induced by An Ultrashort Laser Pulse

A multiphysics phase field model on melting and kinetic superheating of aluminum nanolayer and nanoparticle

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