Time of flight mass spectrometry of polyyne formation in the irradiation of liquid alkanes with femtosecond laser pulses

Zaidi, Ali; Hu, A.; Wesolowski, Michal J.; Fu, Xinghu; Sanderson, Joseph; Zhou, Y.; Duley, W. W.

doi:10.1016/j.carbon.2010.03.026

Cited by 30 publications

(34 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For fs-laser ablation, larger carbon clusters (> 7 carbon atoms) with (in positive mode) fewer hydrogen atoms (< 3 hydrogen atoms) are observed. Such large clusters in the fs-laser spectra can potentially form during the Coulomb or phase explosion of the fs-laser ablation process but some studies claim that reactions of the primary ion species with the source plume can also generate larger clusters (Zaidi et al, 2015(Zaidi et al, , 2010. For both laser pulse durations, the number of larger clusters increased with increasing laser pulse energy for the PSL spectra as has also been reported for ns-laser pulses by Weiss et al (1997).…”

Section: Psl Particlessupporting

confidence: 52%

“…Various mechanisms of the fs-laser ablation (excitation, melting, ablation) were compared to the nanosecond laser ablation (Harilal et al, 2014;Malvezzi, 2014) at different timescales. Substantial atomization and strong cluster formation are the major effects due to the phase and/or Coulomb explosion in the fs-laser ablation (Malvezzi, 2014;Roeterdink et al, 2003;Xu et al, 2000;Zaidi et al, 2010). The fs-laser ablation generates more atomic ions than in the nanosecond laser ablation due to rapid energy transfer and also leads to the formation of more ion clusters because of the explosions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Exploring femtosecond laser ablation in single-particle aerosol mass spectrometry

et al. 2018

View full text Add to dashboard Cite

Abstract. Size, composition, and mixing state of individual aerosol particles can be analysed in real time using singleparticle mass spectrometry (SPMS). In SPMS, laser ablation is the most widely used method for desorption and ionization of particle components, often realizing both in one single step. Excimer lasers are well suited for this task due to their relatively high power density (10 7 -10 10 W cm −2 ) in nanosecond (ns) pulses at ultraviolet (UV) wavelengths and short triggering times. However, varying particle optical properties and matrix effects make a quantitative interpretation of this analytical approach challenging. In atmospheric SPMS applications, this influences both the mass fraction of an individual particle that is ablated, as well as the resulting mass spectral fragmentation pattern of the ablated material. The present study explores the use of shorter (femtosecond, fs) laser pulses for atmospheric SPMS. Its objective is to assess whether the higher laser power density of the fs laser leads to a more complete ionization of the entire particle and higher ion signal and thus improvement in the quantitative abilities of SPMS. We systematically investigate the influence of power density and pulse duration on airborne particle (polystyrene latex, SiO 2 , NH 4 NO 3 , NaCl, and custom-made core-shell particles) ablation and reproducibility of mass spectral signatures. We used a laser ablation aerosol time-of-flight single-particle mass spectrometer (LAAPTOF, AeroMegt GmbH), originally equipped with an excimer laser (wavelength 193 nm, pulse width 8 ns, pulse energy 4 mJ), and coupled it to an fs laser (Spectra Physics Solstice-100F ultrafast laser) with similar pulse energy but longer wavelengths (266 nm with 100 fs and 0.2 mJ, 800 nm with 100 fs and 3.2 mJ). We successfully coupled the freefiring fs laser with the single-particle mass spectrometer employing the fs laser light scattered by the particle to trigger mass spectra acquisition. Generally, mass spectra exhibit an increase in ion intensities (factor 1 to 5) with increasing laser power density (∼ 10 9 to ∼ 10 13 W cm −2 ) from ns to fs laser. At the same time, fs-laser ablation produces spectra with larger ion fragments and ion clusters as well as clusters with oxygen, which does not render spectra interpretation more simple compared to ns-laser ablation. The idea that the higher power density of the fs laser leads to a more complete particle ablation and ionization could not be substantiated in this study. Quantification of ablated material remains difficult due to incomplete ionization of the particle. Furthermore, the fslaser application still suffers from limitations in triggering it in a useful time frame. Further studies are needed to test potential advantages of fs-over ns-laser ablation in SPMS.

show abstract

Section: Psl Particlessupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Exploring femtosecond laser ablation in single-particle aerosol mass spectrometry

et al. 2018

View full text Add to dashboard Cite

show abstract

“…1,21 Nowadays the occurrence of sp-hybridized carbon has been suggested in many carbon-based materials and structures, in carbon-metal moieties, embedded in matrices, after laser irradiation of polymers, in free carbon clusters, in pure sp-sp 2 systems, in liquids, inside carbon nanotubes (CNTs) and connecting graphene sheets. [22][23][24][25][26][27][28][29][30][31][32][33][34][35] In addition, synthetic strategies allow us to produce long and stable sp-carbon wires with controlled length and termination. 36 Theoretical investigations have predicted a number of interesting vibrational, electronic, and transport properties that can be tuned by controlling the wire length and endgroups.…”

Section: S Casarimentioning

confidence: 99%

Carbon-atom wires: 1-D systems with tunable properties

et al. 2016

View full text Add to dashboard Cite

This review provides a discussion of the current state of research on linear carbon structures and related materials based on sp-hybridization of carbon atoms ( polyynes and cumulenes). We show that such systems have widely tunable properties and thus represent an intriguing and mostly unexplored field for both fundamental and applied sciences. We discuss the rich interplay between the structural, vibrational, and electronic properties focusing on recent advances and the future perspectives of carbon-atom wires and novel hybrid sp-sp 2 -carbon architectures.

show abstract

“…and reactions of the primary ion species with the source plume forming larger clusters as secondary products (Zaidi et al, 2010). The increase in number of larger clusters with increasing laser pulse energy was also observed for ns-laser PSL spectra (Weiss et al, 1997).…”

mentioning

confidence: 63%

Exploring femtosecond laser ablation in single particle aerosol mass spectrometry

Ramisetty¹,

Abdelmonem²,

Shen³

et al. 2017

Preprint

View full text Add to dashboard Cite

Keywords: nanosecond laser ablation, femtosecond laser ablation, single particle mass spectrometry, atmospheric aerosols, aerosol mass spectrometry 10 AbstractSize, composition, and mixing state of individual aerosol particles can be analysed in real time using single particle mass spectrometry (SPMS). In SPMS, laser ablation is the most widely used method for desorption and ionization of particle components, often realizing both in one single step. Excimer lasers are well suited for this task due to their relatively high power density (10 7 W cm -2 -10 10 W cm -2 ) in nanosecond (ns) pulses at ultraviolet (UV) 15wavelengths, and short triggering times. However, varying particle optical properties and matrix effects make a quantitative interpretation of this analytical approach challenging. In atmospheric SPMS applications, this influences both the mass fraction of an individual particle that gets ablated, as well as the resulting mass spectral fragmentation pattern of the ablated material. The present study explores the use of shorter (femtosecond, fs) laser pulses for atmospheric SPMS, and systematically investigates the influence of power density and pulse duration 20 on airborne particle (polystyrene latex, SiO2, NH4NO3, NaCl, and custom-made core-shell particles) ablation and reproducibility of mass spectral signatures. We used a laser ablation aerosol time-of-flight single particle mass spectrometer (LAAPTOF, AeroMegt GmbH), originally equipped with an excimer laser (wavelength 193 nm, pulse width 8 ns, pulse energy 4 mJ), and coupled it to an fs-laser (Spectra Physics Solstice-100F ultrafast laser) with similar pulse energy, but longer wavelengths (266 nm with 100 fs and 0.2 mJ, 800 nm with 100 fs and 4 mJ, 25 respectively). Generally, mass spectra exhibit an increase in ion intensities (factor 1 to 5) with increasing laser power density (~10 8 W cm -2 to ~10 13 W cm -2) from ns-to fs-laser. At the same time, fs-laser ablation produces spectra with larger ion fragments and ion clusters, as well as clusters with oxygen, which does not render spectra interpretation more simple compared to ns-laser ablation. Quantification of ablated material remains difficult due to incomplete ionization of the particle. Furthermore, the fs-laser application still suffers from limitations in 30 triggering it in a useful timeframe. Further tests are needed to test potential advantages of fs-over ns-laser ablation in SPMS.

show abstract

Time of flight mass spectrometry of polyyne formation in the irradiation of liquid alkanes with femtosecond laser pulses

Cited by 30 publications

References 13 publications

Exploring femtosecond laser ablation in single-particle aerosol mass spectrometry

Exploring femtosecond laser ablation in single-particle aerosol mass spectrometry

Carbon-atom wires: 1-D systems with tunable properties

Exploring femtosecond laser ablation in single particle aerosol mass spectrometry

Contact Info

Product

Resources

About