Nanoparticle Enhanced Laser Induced Breakdown Spectroscopy: Effect of nanoparticles deposited on sample surface on laser ablation and plasma emission

A critical review of recent progress in analytical laser-induced breakdown spectroscopy

“…For transparent media, for example glasses, the authors propose that it is possible to obtain enhanced spectra by this approach without damaging or cracking the sample itself. In addition, a method to determine NP concentration and size by use of non-interacting substrates was also proposed [187]. Several fundamental aspects have already been studied by the authors, but further investigations are needed to elucidate the exact mechanisms behind the effect.…”

Wavelength dependency and threshold measurements for nanoparticle-enhanced laser-induced breakdown spectroscopy

“…However, the interaction of laser radiation with nanomaterials and corresponding bulkmaterials has been investigated recently. Under otherwise the same experimental arrangements and conditions, extensive systematic experimental works employed OES for different laser parameters and time delays [11][12][13][14]. Several conclusions were communicated, including: (1) the enhanced emission from the nanomaterials increases linearly with time delays when compared with bulkmaterial; (2) the enhanced emission increases with decreasing laser fluence; (3) there are no apparent changes of the plasma electron density and temperature; and (4) the enhancement factors that may vary for different experimental conditions can be associated with the relative masses ejected from both targets.…”

Emission enhancement of femtosecond laser-induced breakdown spectroscopy by combining nanoparticle and dual-pulse on crystal SiO 2

“…Different from experiment method reported above [20,21], a new method of depositing nanoparticles was used and femtosecond laser (fs) was applied instead of nanosecond laser because ultrashort pulse duration has unique advantages, such as little sample damage, low ablation threshold, and periodic microstructure fabrication [22,23]. In this study, an enhancement factor of about 30 for spectrum intensity was obtained in combination of NELIBS and DP-LIBS on crystal SiO 2 sample, compared to conventional single pulse (SP)LIBS.…”

“…In particular, De Giacomo et al reported nanoparticle-enhanced LIBS (NELIBS) of metallic samples with an increase of 1-2 orders of magnitude in LIBS signals by depositing silver nanoparticles (NPs) on metal samples [20]. In another article, they discussed the basic mechanisms of NELIBS in detail [21]. They pointed out that a faster and more efficient production of seed electrons was produced with NPs during the laser ablation process.…”