Nd:YAG Nanosecond Laser Pulses for Precipitation Silver Nanoparticles in Silicate Glasses: AC Conductivity and Dielectric Studies

Silicon ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 13-20 ◽  
Author(s):  
A. A. Menazea ◽  
A. M. Abdelghany ◽  
N. A. Hakeem ◽  
W. H. Osman ◽  
F. H. Abd El-kader
Keyword(s):  
Silver Nanoparticles ◽  
Ac Conductivity ◽  
Laser Pulses ◽  
Silicate Glasses ◽  
Nanosecond Laser ◽  
Dielectric Studies ◽  
Nanosecond Laser Pulses

scholarly journals SERS-Active Pattern in Silver-Ion-Exchanged Glass Drawn by Infrared Nanosecond Laser

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1849
Author(s):  
Ekaterina Babich ◽  
Vladimir Kaasik ◽  
Alexey Redkov ◽  
Thomas Maurer ◽  
Andrey Lipovskii
Keyword(s):  
Silver Nanoparticles ◽  
Raman Scattering ◽  
Glass Surface ◽  
Laser Pulses ◽  
Sodium Ion ◽  
Glass Layer ◽  
Nanosecond Laser ◽  
Signal Distribution ◽  
Order Of Magnitude ◽  
Nanosecond Laser Pulses

The irradiation of silver-to-sodium ion-exchanged glass with 1.06-μm nanosecond laser pulses of mJ-range energy results in the formation of silver nanoparticles under the glass surface. Following chemical removal of ~25-nm glass layer reveals a pattern of nanoparticles capable of surface enhancement of Raman scattering (SERS). The pattern formed when laser pulses are more than half-overlapped provides up to ~105 enhancement and uniform SERS signal distribution, while the decrease of the pulse overlap results in an order of magnitude higher but less uniform enhancement.

Formation of Periodical Sub-Micron Sized Structures on Silicon by Interfered Nanosecond Laser Pulses

2010 ◽  
Vol 97-101 ◽  
pp. 3803-3806
Author(s):  
Yong Xiang Hu ◽  
Heng Zhang ◽  
Zheng Qiang Yao
Keyword(s):  
Cost Effective ◽  
Laser Pulses ◽  
Laser Beams ◽  
Nanosecond Laser ◽  
Effective Technique ◽  
First Order ◽  
Direct Fabrication ◽  
Cost Effective Technique ◽  
Nanosecond Laser Pulses ◽  
Micro Structuring

Laser interference micro-structuring is a relatively efficient and cost-effective technique for fabricating periodical micro-nano-structuring surfaces. The direct fabrication of sub-micron sized dot array on silicon was performed by four interfering nanosecond laser beams with a diffractive beam splitter. The mechanism to form the dot array was analyzed and it was found that the obtained conical dot array had a negative shape of the interference pattern of four laser beams. A second-order peak between two first-order peaks also occurred due to the liquid-solid expansion.

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