A thermoelectric temperature control module for a portable fluorescent sensing platform
Fluorescent portable monitoring systems provide real-time and on-site analysis of a sample solution, avoiding transportation delays and solution degradation. However, some applications, such as environmental monitoring of bodies of water with algae pollution, rely on the temperature control that off-site systems provide for adequate solution results. The goal of this research is the development of a temperature stabilization module for a portable fluorescent sensing platform, which is necessary to prevent inaccurate results. Using a Peltier device-based system, the module heats/cools a solution through digital-to-analog control of the current, using three surface-mounted temperature modules attached to a copper cuvette holder, which is directly attached to the Peltier device. This system utilizes an in-house algorithm for control, which effectively minimizes temperature overshooting when a change is enacted. Finally, with the use of a sample fluorescent dye, Rhodamine B, the system’s controllability is highlighted through the monitoring of Rhodamine B’s fluorescence emission decrease as the solution temperature increases.
Publication Source (Journal or Book title)
Journal of the Electrochemical Society
Robertson, B., Shin, Y., & Choi, J. (2020). A thermoelectric temperature control module for a portable fluorescent sensing platform. Journal of the Electrochemical Society, 167 (14) https://doi.org/10.1149/1945-7111/abc35d