Lateral Grain Growth during the Laser Interference Crystallization of a-Si

Aichmayr, G.; Toet, D.; Mulato, Marcelo; Santos, P.V.; Spangenberg, A.; Christiansen, Silke; Albrecht, M.; Strunk, H. P.

doi:10.1002/(sici)1521-396x(199804)166:2<659::aid-pssa659>3.3.co;2-l

Cited by 9 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This phenomenon is known as Super Lateral Growth. [16][17][18] Above a given laser fluence, laterally growing grains appear in this regime, originating from the unmelted areas (interference minima) and propagating to the completely molten regions (interference maxima). In Figure 1(a) and 1(b), a centre-line at the interference maxima can be observed, which results from the lateral growth of the grains from both sides of the molten pool at the interference maxima following the temperature gradient.…”

Section: Microstructural Design Of Advanced Architecturesmentioning

confidence: 99%

Microstructural Design of Advanced Architectures in Titanium/Platinum Thin Films by Laser Interference Metallurgy

et al. 2008

View full text Add to dashboard Cite

Laser Interference Metallurgy has been used to modify locally microstructure and mechanical properties of metallic thin films with spatial periodicity. Irradiating Platinum films using a Nd:YAG pulsed laser enables the fabrication of three different microstructural architectures. Texture analyses have proven the corresponding impact on the microstructure and the anisotropy of periodic structures. Nanoindentation tests demonstrate an increase of hardness in the microcrystalline region according to the inverse Hall‐Petch effect.

show abstract

Section: Microstructural Design Of Advanced Architecturesmentioning

confidence: 99%

Microstructural Design of Advanced Architectures in Titanium/Platinum Thin Films by Laser Interference Metallurgy

et al. 2008

View full text Add to dashboard Cite

show abstract

“…Due to the thermal interaction, one can achieve a metallurgical treatments on the surface, such as phase transition, re-solidification, re-crystallization, phase transformation, chemical processes, and dislocation formation. [26][27][28][29][30][31] However, the periodic pattern now allows the opportunity for local and periodic treatment and the in-situ growth of one phase or defect structure in another, and thereby the formation of an in-situ composite with very strong and reticulated interfaces down to the atomic level. [31,32] By producing intermetallics in metal (Ni-Al) thin film systems, a periodic mechanical composite can be created.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Phase‐Modulated Hierarchical Surface Structures by Interfering Laser Beams

Daniel

Dahotre

2006

Adv Eng Mater

View full text Add to dashboard Cite

A high‐energy laser interference direct modulation technique is proposed to develop surfaces for energy‐efficient performance based on microstructure and physical parameter control. By producing the surface features or particles at the nano to micron scale in an orderly and/or parallel manner with a lateral long‐range order, the surfaces can be configured for highly improved surface response for a host of properties, including wear and friction. Laser interference direct modulation can lead to an optimized composite of metallurgical (localized alloyed or composite regions) and topographic textures. The technique is rapid prototyping, low cost and one‐step method that can be well‐integrated into existing production lines without the need for any special atmosphere. It is usable for complex geometries of the components and the surface can be modulated for nano‐micro scale features on large areas. The present paper describes the principle behind the laser interference technique configured for surface modulation and provides the definitions of surface structures (features) evolved. Some examples of laser‐based surface modulation of materials systems are presented.

show abstract

“…Ultraviolet (UV) light has been used to induce structural modification in a-CN [4] or crystallization of a-Si [5] and a-SiO x [6]. But no much insight exists concerning the effect of the UV photons on the structure of the SiO x when the material remains amorphous.…”

Section: Introductionmentioning

confidence: 99%

Effects of UV photon irradiation on SiOx (0<x<2) structural properties

Tomozeiu¹

2006

Applied Surface Science

View full text Add to dashboard Cite

Lateral Grain Growth during the Laser Interference Crystallization of a-Si

Cited by 9 publications

References 0 publications

Microstructural Design of Advanced Architectures in Titanium/Platinum Thin Films by Laser Interference Metallurgy

Microstructural Design of Advanced Architectures in Titanium/Platinum Thin Films by Laser Interference Metallurgy

Phase‐Modulated Hierarchical Surface Structures by Interfering Laser Beams

Effects of UV photon irradiation on SiOx (0<x<2) structural properties

Contact Info

Product

Resources

About