| Author(s): |
Gordon A. Shaw; David J. Ross; Steven E. Fick; Wyatt N. Vreeland; |
| Title: |
Contactless Differential Conductivity Detection |
| Published: |
October 12, 2008 |
| Abstract: |
We propose a new technique, contactless differential conductivity detection (CDCD,) to improve the detection limit of contactless conductivity detection for capillary and microchannel electrophoresis. By exploiting a 3-electrode differential configuration, CDCD greatly reduces the dominant noise source in contactless conductivity detection: temperature fluctuations within the measurement system. This will be a particularly important feature for high-conductivity samples, which are most susceptible to thermal noise. The reduced sensitivity of CDCD to temperature fluctuations and its potential suitability for low-power operation will also make this an excellent candidate for field-portable and point-of-application uses where optical detection strategies may be more difficult to implement. |
| Conference: |
microTAS 2008 |
| Proceedings: |
Proceedings of microTAS 2008 |
| Pages: |
3 pp. |
| Location: |
San Diego, CA |
| Dates: |
October 12-16, 2008 |
| Keywords: |
contactless conductivity detection; detector; electrophoresis |
| Research Areas: |
Nanomanufacturing |
| PDF version: |
 Click here to retrieve PDF version of paper (369KB) |
