Desorption stimulated by laser-induced surface-plasmon excitation

Hoheisel, W.; Jungmann, Klaus-Peter; Vollmer, Michael; Weidenauer, R.; Träger, F.

doi:10.1103/physrevlett.60.1649

Cited by 156 publications

(65 citation statements)

References 18 publications

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“…The observed desorption rate is faster than measured for far field photodesorption with the same wavelength, 5 even when taking into account our higher intensity. This is consistent with the observations on the plasmon stimulated desorption on metal, 15 indicating SPP induced rate enhancement. To study the energy dependence, the device was excited with a white light source, i.e., a tungsten-halogen lamp, and the energy of the excited SPPs was adjusted by the angle of incidence.…”

Section: (A) the Contour Plots In Figures 2(b) And 2(c)supporting

confidence: 82%

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Surface plasmon effects on carbon nanotube field effect transistors

Isoniemi

Johansson

Hakala

et al. 2011

Applied Physics Letters

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Herein, we experimentally demonstrate surface plasmon polariton (SPP) induced changes in the conductivity of a carbon nanotube field effect transistor (CNT FET). SPP excitation is done via Kretschmann configuration while the measured CNT FET is situated on the opposite side of the metal layer away from the laser, but within reach of the launched SPPs. We observe a shift of ∼0.4 V in effective gate voltage. SPP-intermediated desorption of physisorbed oxygen from the device is discussed as a likely explanation of the observed effect. This effect is visible even at low SPP intensities and within a near-infrared range.

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Section: (A) the Contour Plots In Figures 2(b) And 2(c)supporting

confidence: 82%

“…Surface plasmons have been shown to cause desorption on metal surfaces. 15 Here, the observed effect can also be explained by the desorption of oxygen induced by the SPP illumination. Contrary to far-field induced photodesorption, the effect observed here is visible at low intensities and even in near-IR.…”

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confidence: 90%

Surface plasmon effects on carbon nanotube field effect transistors

Isoniemi

Johansson

Hakala

et al. 2011

Applied Physics Letters

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“…That there should be electronic (or photochemical) contributions to the ablation of molecular materials, like polymers, which contain well-defined chemical bonds, is unsurprising. 6 Direct evidence for electronic sputtering contributions in the case of metals and other extended solids is generally harder to discern, but reported examples include the observation of atoms with markedly non-thermal velocity distributions arising in laser-induced desorption from nano-sized metal particles 9 and from thin metallic films 10 (both of which findings have been attributed to surface-plasmon interactions) and even of graphite targets. 11 Most detailed mechanistic considerations of target excitation and sputtering involve electronic initiation.…”

Section: The Targetmentioning

confidence: 99%

Pulsed laser ablation and deposition of thin films

et al. 2004

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Pulsed laser ablation is a simple, but versatile, experimental method that finds use as a means of patterning a very diverse range of materials, and in wide areas of thin film deposition and multi-layer research. Superficially, at least, the technique is conceptually simple also, but this apparent simplicity hides a wealth of fascinating, and still incompletely understood, chemical physics. This overview traces our current physico-chemical understanding of the evolution of material from target ablation through to the deposited film, addressing the initial laser-target interactions by which solid material enters the gas phase, the processing and propagation of material in the plume of ejected material, and the eventual accommodation of gas phase species onto the substrate that is to be coated. It is intended that this Review be of interest both to materials scientists interested in thin film growth, and to chemical physicists whose primary interest is with more fundamental aspects of the processes of pulsed laser ablation and deposition.

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“…These two effects can concur, leading to special properties of MNPs for photoreactions [2]. Drastic increases in photoreaction cross sections by excitation in the plasmon resonance have been observed [4 -8], with the first work [4] reporting the nonthermal evaporation of Na atoms from NaNPs in their plasmon range. However, it appears that-with the possible exception on ref.…”

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confidence: 99%

Hyperthermal Chaotic Photodesorption of Xenon from Alumina-Supported Silver Nanoparticles: Plasmonic Coupling and Plasmon-Induced Desorption

et al. 2007

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Excitation of Xe monolayers on alumina-supported silver nanoparticles (AgNPs) by laser light in the (1,0) Mie plasmon resonance can lead to desorption of Xe atoms with hyperthermal energy and chaotic time structure. The chaotic behavior is most likely due to plasmonic coupling between AgNPs. We argue that the desorption is induced by direct energy transfer to the adsorbate from the Pauli repulsion of the collectively oscillating electrons of the plasmon at the surface. A simple model calculation shows that this is possible. A connection between both effects appears likely. DOI: 10.1103/PhysRevLett.99.225501 PACS numbers: 61.46.Df, 68.43.Tj, 71.45.Gm, 73.20.Mf Metal nanoparticles (MNPs) in the size range 1 to 20 nm have special properties, not only in catalysis and other near ground state surface properties, but also with respect to electronic excitations and, consequently, to photoninduced surface reactions [1,2]. Important factors are the confinement of electronic and phononic excitations in the particles, which may lead to quite strong changes of their lifetimes. For MNPs containing quasifree electrons the most drastic change in the excitation spectrum is the existence of the so-called Mie plasmon [3]. These two effects can concur, leading to special properties of MNPs for photoreactions [2]. Drastic increases in photoreaction cross sections by excitation in the plasmon resonance have been observed [4 -8], with the first work [4] reporting the nonthermal evaporation of Na atoms from NaNPs in their plasmon range. However, it appears that-with the possible exception on ref.[4]-no clear indication of a unique action of the plasmon itself has been seen; all cases reported, e.g., of photodesorption, may be understood either in terms of cross section enhancement due to the plasmoninduced field enhancement without change of the nonthermal desorption mechanism [5][6][7], or by strongly enhanced thermal effects [8]. Nonthermal photodesorption usually occurs through the transient excitation of a repulsive adsorbate state. In the energy range concerned (about 2 to 4 eV) the main mechanism goes via transient negative ions (TNI mechanism): absorption of the light by the metal substrate creates hot electrons; the latter can form transient negative ions of the adsorbed species with shifted potentials which leads to momentum transfer and ultimatelyafter backtransfer of the excited electron to the substrateto desorption [9]. The events appear to be essentially the same in and off the plasmon resonance. The Mie plasmon is known to have a very short lifetime (of around 10 fs or less) [10] and partly decays into electron-hole pairs which can enter this mechanism. Besides these nonthermal processes, confinement of the large energy input into the MNPs in the plasmon resonance can also lead to strong thermal events (diffusion, shape changes, desorption), even in the MNPs themselves [11].Here we report a case of nonthermal desorption where the plasmon is not just a means to drastically increase the energy input into the MNPs, but...

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Desorption stimulated by laser-induced surface-plasmon excitation

Cited by 156 publications

References 18 publications

Surface plasmon effects on carbon nanotube field effect transistors

Surface plasmon effects on carbon nanotube field effect transistors

Pulsed laser ablation and deposition of thin films

Hyperthermal Chaotic Photodesorption of Xenon from Alumina-Supported Silver Nanoparticles: Plasmonic Coupling and Plasmon-Induced Desorption

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