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This paper presents a novel direct fluorescent ion detection system based on optically active inorganic CdSe quantum dots, surface-functionalized with an organic ionophore, a calixcrown. This new nanoassembly was accomplished via a thiol-based capping strategy. The detection of metal ions upon interaction with the calixcrown relied on changes in quantum dots fluorescence.
Relative displacements between the atomically smooth, nested shells in multiwalled carbon nanotubes (MWNTs) can be used as a robust nanoscale motion enabling mechanism for transduction applications such as bearings, switches, GHz-oscillators, shuttles, memories, syringes and actuators. Here we report on a batch fabrication paradigm suited for structuring large arrays of MWNTs into such devices in...
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