Laser desorption ionization on nanostructures

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Interactions between laser radiation and photonic structures at elevated laser intensities give rise to the production of positive and negative ions from adsorbates. These new types of nanophotonic ion sources exhibit properties that are significantly different from conventional laser desorption ionization sources.The power to shape the laser light-nanostructure interaction through structural properties and to efficiently optimize the resulting enhanced ion yields is unique to nanophotonic ion sources. Beyond their obvious use for ion production in mass spectrometry, they are candidates for energy harvesting and as solar cell materials. In addition, due to their small dimensions, these sources are amenable for integration with microfluidic separation devices and miniaturized mass spectrometers.


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108/ B. N. Walker, T. Razunguzwa, M. Powell, R. Knochenmuss and A. Vertes, “Nanophotonic Ion Production from Silicon Microcolumn Arrays,” Angew. Chem. Int. Ed., 2009, 48, 1669-1672. Supporting information.