ANYL 17 |
| As technique length scales are reduced to the scale of the controlling physical phenomena, new sensing attributes can be realized. We have developed a unique fabrication strategy to form individual nanoarchitectures through insulating poly(methylmethacrylate) layers utilizing focused-ion beam (FIB) milling. These nanostructures (individual or arrays) serve either as nanoelectrode wells or as templates for creating nanowire structures via metal deposition. We will emphasize our efforts in characterizing the electrochemical response of nanoelectrode well structures with high-aspect ratios (~100) that furnish insight into restricted diffusion effects. We are also creating nanoelectrode arrays for enhanced spatiotemporal electrochemical sensing. By tailoring the number, size and density (i.e. interelectrode distances), FIB milling allows electrode array characteristics to be highly defined, providing a powerful means for optimizing the cooperative effects between adjacent electroactive areas. Further illumination of nanoelectrode array properties should offer enhanced analytical possibilities for a wide range of scientific disciplines. |
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Analytical Approaches: Electroanalytical Chemistry
8:30 AM-11:40 AM, Sunday, 10 September 2006 Moscone Center -- Room 124, Oral
Division of Analytical Chemistry |