Morphology-Dependent Resonance Emission from Individual Micron-Sized Particles

Smith, Trevor A.; Trevitt, Adam J.; Wearne, Philip J.; Bieske, Evan J.; McKimmie, Lachlan J.; Bird, Damian

doi:10.1007/4243_2007_015

Cited by 5 publications

(6 citation statements)

References 22 publications

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“…The Quadrupole Ion Trap Mass Spectrometry (QITMS) is a promising technique to perform mass analysis of micron-sized particles such as biological cells, aerosols, and synthetic polymers [454,455]. The trap can be operated in the mass-selective axial instability mode [435,436]. Microparticle diagnosis can be achieved by operating the QIT as an EDB, for low frequency values of the a.c.…”

Section: The Quadrupole Paul Trap As a Mass Spectrometermentioning

confidence: 99%

“…83. Charge detection QITMS has demonstrated to be a remarkable technique suited for high-speed mass analysis of micron-sized particles, such as biological cells and aerosols [436]. The paper of Nie [435] describes the technique, and explains how the trap can operate in the mass-selective axial instability mode by scanning the frequency of the applied a.c. field.…”

Section: Trap Operation In the Mass-selective Axial Instability Modementioning

confidence: 99%

“…Moreover, the Rayleigh limit of charge on a droplet can be investigated using elastic scattering, in order to determine the size and charge corresponding to droplet explosions. Phase function measurements (intensity versus scattering angle) and data gathered from morphology-dependent resonances (MDRs) provide alternative methods to determine the size and refractive index of droplets and microspheres [156,436,549,592], and thus characterize coated spheres [85,593].…”

Section: Elastic Scattering Lorenz-mie Theorymentioning

confidence: 99%

See 2 more Smart Citations

The physics and applications of strongly coupled plasmas levitated in electrodynamic traps

Mihalcea¹,

Филинов²,

Syrovatka³

et al. 2019

Preprint

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Charged (nano)particles confined in electrodynamic traps can evolve into strongly correlated Coulomb systems, which are the subject of current investigation. Exciting physical phenomena associated to Coulomb systems have been reported such as autowave generation, phase transitions, system self-locking at the ends of the linear Paul trap, self-organization in layers, or pattern formation and scaling. The dynamics of ordered structures consisting of highly nonideal similarly charged nanoparticles, with coupling parameter of the order Γ = 10 8 is investigated. This approach enables us to study the interaction of nanoparticle structures in presence and in absence of the neutralizing plasma background, as well as to investigate various types of phenomena and physical forces these structures experience. Applications of electrodynamic levitation for mass spectrometry, including containment and study of single aerosols and nanoparticles are reviewed, with an emphasis on state of the art experiments and techniques, as well as future trends. Late experimental data suggest that inelastic scattering can be successfully applied to the detection of biological particles such as pollen, bacteria, aerosols, traces of explosives or synthetic polymers.

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Section: The Quadrupole Paul Trap As a Mass Spectrometermentioning

confidence: 99%

Section: Trap Operation In the Mass-selective Axial Instability Modementioning

confidence: 99%

Section: Elastic Scattering Lorenz-mie Theorymentioning

confidence: 99%

See 1 more Smart Citation

The physics and applications of strongly coupled plasmas levitated in electrodynamic traps

Mihalcea¹,

Филинов²,

Syrovatka³

et al. 2019

Preprint

View full text Add to dashboard Cite

show abstract

“…Calibrations with laboratory-generated aerosol particles indicate a linear relationship between signal response and aerosol mass concentration. These studies, together with estimates of the detection limits for particulate sulfate (0.65µg/m 3 ) and nitrate (0.16µg/m 3 ) demonstrate the ability of the IT-AMS to measure atmospheric aerosol particles [53,60,39,61,62,58].…”

Section: Mass Spectrometry Using Ion Trapsmentioning

confidence: 74%

Multipole Traps as Tools in Environmental Studies

Mihalcea¹,

Stan²,

Giurgiu³

et al. 2015

Preprint

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Trapping of microparticles, nanoparticles and aerosols is an issue of major interest for physics and chemistry. We present a setup intended for microparticle trapping in multipole linear Paul trap geometries, operating under Standard Ambient Temperature and Pressure (SATP) conditions. A 16-electrode linear trap geometry has been designed and tested, with an aim to confine a larger number of particles with respect to quadrupole traps and thus enhance the signal to noise ratio, as well as to study microparticle dynamical stability in electrodynamic fields. Experimental tests and numerical simulations suggest that multipole traps are very suited for high precision mass spectrometry measurements in case of different microparticle species or to identify the presence of certain aerosols and polluting agents in the atmosphere. Particle traps represent versatile tools for environment monitoring or for the study of many-body Coulomb systems and dusty plasmas.

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“…Moreover, a microsphere can act as a three-dimensional optical cavity able to support optical resonances, also known as morphology-dependent resonances (MDR). Using individual micron-sized particles doped with fluorescence dyes and confined within a quadrupole trap, MDR emission has been observed by means of confocal and two-photon fluorescence microscopes 62 . Optical MDR resonances induced in the fluorescence spectrum were investigated in order to study laserinduced coalescence of two conjoined, polystyrene spheres levitated in a QIT 63 .…”

Section: Microparticles Investigation Methodsmentioning

confidence: 99%

Multipole electrodynamic ion trap geometries for microparticle confinement under standard ambient temperature and pressure conditions

Mihalcea

Giurgiu

Stan

et al. 2016

Journal of Applied Physics

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Trapping of microparticles and aerosols is of great interest for physics and chemistry.We report microparticle trapping in case of multipole linear Paul trap geometries, operating under Standard Ambient Temperature and Pressure (SATP) conditions. An 8-electrode and a 12-electrode linear trap geometries have been designed and tested with an aim to achieve trapping for larger number of particles and to study microparticle dynamical stability in electrodynamic fields. We report emergence of planar and volume ordered structures of microparticles, depending on the a.c. trapping frequency and particle specific charge ratio. The electric potential within the trap is mapped using the electrolytic tank method. Particle dynamics is simulated using a stochastic Langevin equation. We emphasize extended regions of stable trapping with respect to quadrupole traps, as well as good agreement between experiment and numerical simulations.

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Morphology-Dependent Resonance Emission from Individual Micron-Sized Particles

Cited by 5 publications

References 22 publications

The physics and applications of strongly coupled plasmas levitated in electrodynamic traps

The physics and applications of strongly coupled plasmas levitated in electrodynamic traps

Multipole Traps as Tools in Environmental Studies

Multipole electrodynamic ion trap geometries for microparticle confinement under standard ambient temperature and pressure conditions

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