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Transdermal microneedle sensor arrays based on palladium: Polymer composites |
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| Institution: | 1. Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093-0448, USA;2. Department of Chemical Engineering, Feng Chia University, Taichung 40724, Taiwan;3. Sandia National Laboratories, Albuquerque, NM 87185, USA;4. NCSU—University of North Carolina and North Carolina State University, Raleigh, NC 27695-7115, USA;5. Electrozyme LLC, 4225 Executive Square, Suite 400, La Jolla, CA 92037, USA |
| Abstract: | The solvent based casting of metal particle-polymer mixtures has been investigated as a rapid means through which to produce a 10 × 10 array of pyramidal (200 × 200 × 350 μm) microneedles for electroanalytical sensing applications. The incorporation of nanoparticulate palladium powder within either a polycarbonate or polystyrene binder is shown to result in mechanically robust microneedles. The electrochemical properties of the resulting structures have been investigated and their application for transdermal sensing applications has been demonstrated through the use of epidermal/skin mimic. |
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