Laser-nanostructure interactions for ion production

Interactions between pulsed laser radiation and nanostructured materials, with dimensions ranging from 1 nm to 500 nm, can result in enhanced desorption and ionization of organic and biomolecular adsorbates. When the critical dimensions of the nanostructures fall below the characteristic lengths for...

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Bibliographic Details
Published in:	Physical chemistry chemical physics : PCCP 2012-06, Vol.14 (24), p.8453-8471
Main Authors:	Stolee, Jessica A, Walker, Bennett N, Zorba, Vassilia, Russo, Richard E, Vertes, Akos
Format:	Article
Language:	eng
Subjects:	Active control Adsorbates Channels Chemistry Exact sciences and technology Fragmentation General and physical chemistry Ion sources Ionization Nanostructure Photonics Surface physical chemistry
Online Access:	Request full text
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Summary:	Interactions between pulsed laser radiation and nanostructured materials, with dimensions ranging from 1 nm to 500 nm, can result in enhanced desorption and ionization of organic and biomolecular adsorbates. When the critical dimensions of the nanostructures fall below the characteristic lengths for the involved transport processes, novel regimes of ion production are observed. Systems with dimensions commensurate with the wavelength of the laser radiation are the basis of photonic ion sources with unique properties, including polarization dependent ion yields and fragmentation. The main characteristics of these systems are often governed by altered modes of transport, e.g. , ballistic vs. diffusive, energy confinement, plasmon resonances, and local field enhancements. Some structures offer control over the internal energy and the active fragmentation channels for the produced ions. Emerging applications of photonic ion sources in mass spectrometry benefit from ultrahigh sensitivity, a wide dynamic range for detection and quantitation, and a broad coverage of adsorbates ranging from small organic molecules to biopolymers, as well as to highly complex samples like single cells. The emerging field of photonic ion production relies on laser-nanostructure interactions. A host of new phenomena and applications are enabled when the critical dimensions of the nanostructures fall below the characteristic lengths for the transport processes involved.
ISSN:	1463-9076 1463-9084