Multiscale Visualization of Colloidal Particle Lens Array Mediated Plasma Dynamics for Dielectric Nanoparticle Enhanced Femtosecond Laser-Induced Breakdown Spectroscopy

Mengmeng Wang, Lan Jiang, Sumei Wang, Qitong Guo, Feng Tian, Zhuyuan Chu, Jin Zhang, Xin Li, Yongfeng Lu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A multiscale visualization of silica colloidal particle lens array (CPLA) assisted laser ablation of copper is investigated. The distributed holes on a crater of CPLA-deposited Cu (CPLA-Cu) show a near-field effect by the silica nanoparticles (NPs), and the plasma emission signal of CPLA-Cu is 3-5 times as strong as that of Cu. Time-resolved plasma expansion, shockwave propagation, plasma plume emission, and nanoparticle distribution are observed and analyzed for ablations on both Cu and CPLA-Cu substrates. The initial expansion of plasma generated on CPLA-Cu is faster than that of pristine Cu. The shockwave of CPLA-Cu is rounder and its plasma plume is wider than those of Cu. The nanoparticle distribution shows a strong lateral collision during plume ejection for CPLA-Cu. Plasma characterization shows the increased plasma temperature is the key reason for femtosecond laser-induced breakdown spectroscopy (fs-LIBS) signal enhancement. This work demonstrates the signal enhancement effect of dielectric NPs on fs-LIBS and provides insights into hydrodynamics of the fs laser-induced plasma generated on CPLA-deposited substrate.

Original languageEnglish (US)
Pages (from-to)9952-9961
Number of pages10
JournalAnalytical chemistry
Volume91
Issue number15
DOIs
StatePublished - Aug 6 2019

Fingerprint

Laser induced breakdown spectroscopy
Ultrashort pulses
Lenses
Visualization
Nanoparticles
Plasmas
Silicon Dioxide
Laser ablation
Substrates
Ablation
Copper
Hydrodynamics
Lasers

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Multiscale Visualization of Colloidal Particle Lens Array Mediated Plasma Dynamics for Dielectric Nanoparticle Enhanced Femtosecond Laser-Induced Breakdown Spectroscopy. / Wang, Mengmeng; Jiang, Lan; Wang, Sumei; Guo, Qitong; Tian, Feng; Chu, Zhuyuan; Zhang, Jin; Li, Xin; Lu, Yongfeng.

In: Analytical chemistry, Vol. 91, No. 15, 06.08.2019, p. 9952-9961.

Research output: Contribution to journalArticle

Wang, Mengmeng ; Jiang, Lan ; Wang, Sumei ; Guo, Qitong ; Tian, Feng ; Chu, Zhuyuan ; Zhang, Jin ; Li, Xin ; Lu, Yongfeng. / Multiscale Visualization of Colloidal Particle Lens Array Mediated Plasma Dynamics for Dielectric Nanoparticle Enhanced Femtosecond Laser-Induced Breakdown Spectroscopy. In: Analytical chemistry. 2019 ; Vol. 91, No. 15. pp. 9952-9961.
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abstract = "A multiscale visualization of silica colloidal particle lens array (CPLA) assisted laser ablation of copper is investigated. The distributed holes on a crater of CPLA-deposited Cu (CPLA-Cu) show a near-field effect by the silica nanoparticles (NPs), and the plasma emission signal of CPLA-Cu is 3-5 times as strong as that of Cu. Time-resolved plasma expansion, shockwave propagation, plasma plume emission, and nanoparticle distribution are observed and analyzed for ablations on both Cu and CPLA-Cu substrates. The initial expansion of plasma generated on CPLA-Cu is faster than that of pristine Cu. The shockwave of CPLA-Cu is rounder and its plasma plume is wider than those of Cu. The nanoparticle distribution shows a strong lateral collision during plume ejection for CPLA-Cu. Plasma characterization shows the increased plasma temperature is the key reason for femtosecond laser-induced breakdown spectroscopy (fs-LIBS) signal enhancement. This work demonstrates the signal enhancement effect of dielectric NPs on fs-LIBS and provides insights into hydrodynamics of the fs laser-induced plasma generated on CPLA-deposited substrate.",
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