Nanoparticle enhanced laser ablation and consequent effects on laser induced plasma optical emission

Giacomo, A. De; Alrifai, Rim; Gardette, Vincent; Salajková, Zita; Dell’Aglio, M.

doi:10.1016/j.sab.2020.105794

Cited by 28 publications

(16 citation statements)

References 23 publications

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“…This happens since the emission of particles from the NP elements is shifted forward in distance and time with respect to the emission of the target emitters because the NPs are vaporized in the plasma and not during laser irradiation, as demonstrated in spectrally resolved emission images in ref. 18. As explained above, in these experiments, only the part of plasma far from its edge was acquired with the optical fiber; consequently, minimal or no signal of Au was found during the temporal evolution experiments.…”

Section: Resultsmentioning

confidence: 95%

“…This last observation conrms that NELIBS had a higher number of emitters, about 7 times in these experiments, even though the ablation mass was moderately affected by the deposition of NPs. 18 Moreover, no differences were found between the NELIBS Boltzmann plots of AuNRs_50 and AuNSs, meaning that the NP shape did not inuence the number of emitters in the plasma phase when the specic optimal conditions were used.…”

Section: Resultsmentioning

confidence: 97%

See 1 more Smart Citation

Different nanoparticle shapes for nanoparticle-enhanced laser-induced breakdown spectroscopy: nanosphere and nanorod effects

Dell’Aglio

Franco

Giacomo

2023

J. Anal. At. Spectrom.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 97%

Different nanoparticle shapes for nanoparticle-enhanced laser-induced breakdown spectroscopy: nanosphere and nanorod effects

Dell’Aglio

Franco

Giacomo

2023

J. Anal. At. Spectrom.

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“…[1][2][3][4] Like LIBS, NELIBS is an optical emission technique based on the generation of a laser-induced plasma (LIP) at a sample surface, but in this case, the LIP is induced on a sample covered with plasmonic NPs deposited on its surface. The main mechanism of signal enhancement occurring during NELIBS, as recently reported in De Giacomo et al, 5 is based on the coupling of the NP plasmonic system with the ablated matter at the initial stage and the electromagnetic field of the incoming laser pulse.…”

Section: Introductionmentioning

confidence: 88%

Plasma Parameters During Nanoparticle-Enhanced Laser-Induced Breakdown Spectroscopy (NELIBS) in the Presence of Nanoparticle–Protein Conjugates

Dell’Aglio,

Mallardi,

Gaudiuso

et al. 2023

Appl Spectrosc

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Nanoparticle-enhanced laser-induced breakdown spectroscopy (NELIBS) is an optical emission technique based on the laser-induced plasma (LIP) on a sample after the deposition of plasmonic nanoparticles (NPs) on its surface. The employment of the NPs allows an enhancement of the signal with respect to the one obtained with the conventional laser-induced breakdown spectroscopy (LIBS) enabling an extremely high sensitivity and very low limits of detection compared with the LIBS performance. Recently, NELIBS was used for monitoring the NP protein corona formation. As a matter of fact, the NPs in the presence of proteins adsorbed on the surface change their surface properties, therefore the sensing of protein corona formation was possible because of the strong dependence of NELIBS effects on the NP organization on the substrate, which in turn is deeply affected by the surface properties of the NPs. A correlation was found between NELIBS enhancement and the structure of the NP–protein conjugate in terms of protein content absorbed on the NP surface. An interesting question that was not yet exploited regards the role of LIP during the NELIBS when the NPs are covered with proteins. Since the presence of organic matter can strongly quench the LIP emission, the study of the LIP properties during protein corona sensing by NELIBS is of interest for two main reasons: (i) to understand whether the plasma parameters can vary in the presence of proteins adsorbed on the NP surface and (ii) to investigate how and if the plasma parameters themselves can influence the NELIBS processes. With this aim, the study of plasma parameters, i.e., electron densities and temperatures, during the sensing of NP protein corona by NELIBS is presented and discussed. The NPs used during these experiments were ultrapure gold NPs (AuNPs) produced by pulsed laser ablation in liquid, which are stable without any stabilizer. The human serum albumin protein is used to form AuNP–protein conjugates further deposited on a titanium target in NELIBS measurements. Dynamic light scattering, surface plasmon resonance spectroscopy, and laser Doppler electrophoresis for ζ-potential determination were employed to monitor the protein coverage of NP surface in the conjugate solutions before the NELIBS measurements.

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“…Nanoparticle enhanced (NE) LIBS was investigated by De Giacomo et al 110 They studied the plasmonic nature of the signal enhancement during NE-LIBS of noble metal NPs deposited on metal samples. Shielding of the NPs due to the plasmonic effect was thoroughly studied using laws of conservation of energy and the spectral features of the atomic emission during plasma evolution.…”

Section: Laser-based Atomic Spectrometrymentioning

confidence: 99%

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

Evans

Pisonero

Smith

et al. 2021

J. Anal. At. Spectrom.

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Nanoparticle enhanced laser ablation and consequent effects on laser induced plasma optical emission

Cited by 28 publications

References 23 publications

Different nanoparticle shapes for nanoparticle-enhanced laser-induced breakdown spectroscopy: nanosphere and nanorod effects

Different nanoparticle shapes for nanoparticle-enhanced laser-induced breakdown spectroscopy: nanosphere and nanorod effects

Plasma Parameters During Nanoparticle-Enhanced Laser-Induced Breakdown Spectroscopy (NELIBS) in the Presence of Nanoparticle–Protein Conjugates

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

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