scholarly journals Synthesis of fibrous nanoparticle aggregates by femtosecond laser ablation in air

2009 ◽  
Vol 17 (2) ◽  
pp. 1064 ◽  
Author(s):  
Bo Tan ◽  
Krishnan Venkatakrishnan
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Nanoparticle Aggregates

scholarly journals Self assembled nanoparticle aggregates from line focused femtosecond laser ablation

2010 ◽  
Vol 18 (5) ◽  
pp. 4329 ◽  
Author(s):  
Craig A. Zuhlke ◽  
Dennis R. Alexander ◽  
John C. Bruce III ◽  
Natale J. Ianno ◽  
Chad A. Kamler ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Nanoparticle Aggregates ◽  
Self Assembled

scholarly journals Synthesis of Fibrous Nanoparticle Aggregates by Femtosecond Laser Ablation in Air

2021 ◽  
Author(s):  
Bo Tan ◽  
Krishnan Venkatakrishnan
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Nanoparticle Aggregates

Synthesis of Fibrous Nanoparticle Aggregates by Femtosecond Laser Ablation in Air

scholarly journals Synthesis of Fibrous Nanoparticle Aggregates by Femtosecond Laser Ablation in Air

2021 ◽  
Author(s):  
Bo Tan ◽  
Krishnan Venkatakrishnan
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Nanoparticle Aggregates

Synthesis of Fibrous Nanoparticle Aggregates by Femtosecond Laser Ablation in Air

scholarly journals Critical Time to Nucleation: Graphite and Silicon Nanoparticle Generation by Laser Ablation

2009 ◽  
Vol 2009 ◽  
pp. 1-6 ◽  
Author(s):  
Sid Senadheera ◽  
Bo Tan ◽  
Krishnan Venkatakrishnan
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Critical Time ◽  
Femtosecond Laser Ablation ◽  
Pulse Frequency ◽  
Experimental Result ◽  
Time Interval ◽  
Nanoparticle Aggregates ◽  
Threshold Time ◽  
Critical Times

Femtosecond laser ablation hydrodynamics has been analyzed numerically. The nucleation process of two materials (silicon and graphite) in an expanding plume produced by a femtosecond laser ablation is analyzed within the framework of the Zeldovich-Raizer theory (RZ theory). RZ theory is the most appropriate theory applicable to an expanding plume created by a femtosecond laser ablation and has been used to estimate the critical times in the evolution of nanoparticle formation. However, there is no experimental result to directly substantiate the theoretical model on a fundamental level. This paper gives an experimental approach to prove theoretical predictions of critical times to nucleation in laser-ablated graphite and silicon plumes. The critical time to nucleation deduced using the RZ theory was found to be in close agreement with pulse frequency at which fibrous nanoparticle aggregates start to form for both materials. We experimentally showed that the nanoparticle aggregates were produced consistently when the pulse frequency corresponding to the femtosecond laser time interval was shorter than the critical time to begin nucleation. Therefore the nucleation time acts as a threshold time length to begin nucleation.

scholarly journals Ridge waveguide lasers in Nd:GGG crystals produced by swift carbon ion irradiation and femtosecond laser ablation

2012 ◽  
Vol 20 (9) ◽  
pp. 9763 ◽  
Author(s):  
Yuechen Jia ◽  
Ningning Dong ◽  
Feng Chen ◽  
Javier R. Vázquez de Aldana ◽  
Sh. Akhmadaliev ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Ion Irradiation ◽  
Femtosecond Laser Ablation ◽  
Ridge Waveguide ◽  
Carbon Ion ◽  
Waveguide Lasers ◽  
Ridge Waveguide Lasers
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