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Ryan, Kevin M.
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Ryan, Kevin M.
Official Name
Ryan, Kevin M.
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Now showing 1 - 3 of 3
- PublicationCentimetre scale assembly of vertically aligned and close packed semiconductor nanorods from solutionAssembly of CdS nanorods (8 × 100 nm) into vertically aligned arrays over very large areas on a substrate either as a monolayer or several multilayers is shown by electrophoresis.
Scopus© Citations 52 430 - PublicationSize controlled gold tip growth onto II–VI nanorods(RSC publications, 2010-09-28)
; ; ; ; Gold tip size and multiplicity is controlled in hybrid gold-semiconductor nanorods (CdS-Au, CdSe-Au and CdTe-Au) in fast reaction times of less than 2 minutes by optimising precursor type, concentration, and temperature. Controllable gold tips up to as large as 40 nm on a rod diameter of 7 nm are reported with the tip size shown to be directly related to the redox potentials of the dangling atoms on the nanorod and the gold chloride precursors (mono or trivalent). The preference for symmetric (both ends) over asymmetric (single end) is achieved by simply elevating the reaction temperature to 80ºC without changing the reaction time. TEM and XRD analysis were preformed to verify both the gold nanoparticle size and crystallinity of the hybrid nanostructures. Increased quenching of nanorod emission is observed as the size of the gold tip increases suggesting optimisation of charge transfer between the semiconductor and the metal.Scopus© Citations 36 735 - PublicationA facile spin-cast route for cation exchange of multilayer perpendicularly-aligned nanorod assemblies(RSC publications, 2011-10-07)
; ; ; ; ; ; ; A facile spin cast route was developed to convert perpendicularly aligned nanorod assemblies of cadmium chalcogenides into their silver and copper analogues. The assemblies are rapidly cation exchanged without affecting either the individual rod dimensions or collective superlattice order extending over several multilayers.Scopus© Citations 36 740