Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 18, Issue 18, Pages 2763-2769Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.200800293
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Funding
- Camille Dreyfus Teacher-Scholar Award
- Sloan Fellowship
- NSF
- Northwestern MRSEC
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Supraspheres (SS) composed of hundreds to thousands of metal nanoparticles (NPs) and crosslinked by dithiol linkers are assembled into larger structures. which are subsequently converted into nanoporous metals (NMs). Conversion is achieved by heating which removes organic molecules stabilizing the NPs and allows for NP fusion. Heating of SS solutions leads to NMs of overall macroscopic dimensions; localized radiation using collimated electron beam is used to prepare metallized surface micropatterns. Depending on the composition of supraspherical precursors, nanoporous materials composed of up to three metals can be obtained. Strategies for controlling pore size and nanoscale surface toughness of these materials are discussed.
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