15 Result(s)

Article

Mechanism of and method to avoid discoloration of stainless steel surfaces in laser cleaning

O₃. Based on Auger Electron Spectroscopy analyses and optical microscopic observations, γ-Fe₂O₃ and Fe₃O₄ are formed on the stainless steel surface in laser cleaning in the air. Since laser can induce high temper...

Y.F. Lu, W.D. Song, M.H. Hong, T.C. Chong, T.S. Low in Applied Physics A (1997)

Article

A theoretical model for laser removal of particles from solid surfaces

Y.F. Lu, W.D. Song, B.W. Ang, M.H. Hong, D.S.H. Chan, T.S. Low in Applied Physics A (1997)

Article

An energy approach to the modelling of particle removal by pulsed laser irradiation

An energy model to explain particle removal mechanism has been developed. This model is based on a detailed investigation of contact deformation of a particle on a solid surface, as well as particle motion dur...

Y.F. Lu, Y.W. Zheng, W.D. Song in Applied Physics A (1999)

Article

Scanning tunnelling microscopy imaging and modification of hydrogen-passivated Ge(100) surfaces

Scanning tunnelling microscopy (STM) study and modification of hydrogen (H)-passivated Ge(100) surfaces have been investigated. Thermal oxidation procedures were used to minimise surface roughness. Ge samples ...

Y.F. Lu, Z.H. Mai, W.D. Song, W.K. Chim in Applied Physics A (2000)

Article

Laser-induced removal of flash from heat sinks in integrated circuit packages

Laser-induced removal of flash from heat sinks in integrated circuit (IC) packages has been studied. It is found that flash can be effectively removed from heat sinks in plastic IC packages by laser deflashing...

W.D. Song, M.H. Hong, S.M. Huang, S.Y. Chan, Y.F. Lu, T.C. Chong in Applied Physics A (2002)

Article

Pulsed laser deposition of oriented barium ferrite (BaFe₁₂O₁₉) thin films

Barium ferrite (BaFe₁₂O₁₉) thin films have been deposited by pulsed laser deposition at 900 °C in 250 mTorr oxygen on Si substrates with Pt (111) underlayers. The barium ferrite films contained platelet grains an...

X.H. Liu, M.H. Hong, W.D. Song, G.X. Chen, J.F. Chong, J.P. Wang… in Applied Physics A (2004)

Article

Particle on surface: 3D-effects in dry laser cleaning

Previous analysis of dry laser cleaning within the frame of a one-dimensional (1D) model with homogeneous surface heating shows that this model disagrees with experiments by one–two orders of magnitude. The pa...

B.S. Luk’Yanchuk, Z.B. Wang, W.D. Song, M.H. Hong in Applied Physics A (2004)

Article

Laser synthesis of new materials

The dual-beam laser ablation of different targets for synthesizing new materials within the overlap** plasma area has been investigated. This method is termed ‘laser synthesis of new materials’ and it is fle...

W.D. Song, M.H. Hong, T. Osipowicz, D.Y. Dai, S.I. Pang, Y.Z. Peng… in Applied Physics A (2004)

Article

Structural and Optical Properties of Co-Doped ZnO Thin Films

Co-doped zinc oxide thin films (Zn_1−xCo _x O) have been deposited on c-plane sapphire substrates by dual-beam pulsed laser deposition. The films have lattice parameters similar to...

Y. Z. Peng, T. Liew, W. D. Song, C. W. An, K. L. Teo… in Journal of Superconductivity (2005)

Article

Barium ferrite (BaFe₁₂O₁₉) thin films prepared by pulsed laser deposition on MgO buffered Si substrates

Barium ferrite (BaFe₁₂O₁₉) thin films have been deposited by pulsed laser deposition (PLD) on Si substrates with MgO underlayers. The films were deposited in oxygen atmosphere by excimer laser (λ=248 nm, pulse du...

X.H. Liu, M.H. Hong, W.D. Song, G.X. Chen, H.M.J. Lam, J.P. Wang… in Applied Physics A (2005)

Article

Room temperature diluted magnetic semiconductor synthesized by dual beam laser deposition

Diluted magnetic semiconductor Co-doped ZnO film has been synthesized by a dual beam pulsed laser deposition method. The magnetic, electrical, and optical properties of the Zn_0.985Co_0.015O_0.67 film are studied in...

Y.Z. Peng, W.D. Song, C.W. An, J.J. Qiu, J.F. Chong, B.C. Lim… in Applied Physics A (2005)

Chapter

New Methods for Laser Cleaning of Nanoparticles

B. S. Luk’yanchuk, W. D. Song, Z. B. Wang… in Laser Ablation and its Applications (2007)

Article

Mechanism and characteristics of steam laser patterning

Steam laser patterning of thin films and/or solid surfaces has been studied by jetting a beam of steam, such as water vapor, onto a sample surface to form a thin liquid film on it and patterning the sample by ...

W.D. Song, Q. **e in Applied Physics A (2008)

Article

Magnetoresistance in granular films formed by CoFe and phase change material

Magnetoresistance having a field and current dependence like that of GMR (but a rather small magnitude) has been observed in Co₇₀Fe₃₀/GeTe and Co₇₀Fe₃₀/Ge₂Sb₂Te₅ granular films. Film stacks were fabricated using ...

J. C. Huang, W. D. Song, J. A. Bain, Y. Yang, L. P. Shi… in Applied Physics A (2013)