Nanoelectrode array for electrochemical analysis
| DWPI Title: Nano-electrode array used in sensor system for in-situ analysis of chemicals in water, has nanoscale hollow pores that are formed in insulating template film to provide nano-electrodes with uniform inter-electrode spacing |
| Abstract: A nanoelectrode array comprises a plurality of nanoelectrodes wherein the geometric dimensions of the electrode controls the electrochemical response, and the current density is independent of time. By combining a massive array of nanoelectrodes in parallel, the current signal can be amplified while still retaining the beneficial geometric advantages of nanoelectrodes. Such nanoelectrode arrays can be used in a sensor system for rapid, non-contaminating field analysis. For example, an array of suitably functionalized nanoelectrodes can be incorporated into a small, integrated sensor system that can identify many species rapidly and simultaneously under field conditions in high-resistivity water, without the need for chemical addition to increase conductivity. |
| Use: Nano-electrode array used in sensor system for in-situ analysis of chemicals in water. |
| Advantage: The measured current of the array can be increased by providing a parallel array, while taking advantage of the improved electrochemical response of each nano-electrode. Thus, both portable and battery-powered field testing can be enabled, and continuous remote system monitoring can be enabled. |
| Novelty: The nano-electrode array has an insulating template film (11) made of a resist polymer, that is formed on a conducting substrate (12). Several nanoscale hollow pores are formed in the insulating template film by nanoscale lithography to provide working nano-electrodes. The critical dimension of the nano-electrodes is less than 1 micron, and the uniform inter-electrode spacing is 10-100 times the critical dimension. A conducting layer is deposited on the insulating template film to provide a counter electrode. |
| Filed: 3/16/2005 |
| Application Number: US200581923A |
| Tech ID: SD 7588.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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