Open AccessA Thermoelectric Temperature Control Module for a Portable Fluorescent Sensing Platform
Author(s) -
Brianna Robertson,
Young-Ho Shin,
JinWoo Choi
Publication year - 2020
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/abc35d
Subject(s) - controllability , fluorescence , thermoelectric effect , thermoelectric cooling , temperature control , cuvette , rhodamine , sample (material) , materials science , computer science , process engineering , control engineering , chemistry , engineering , optics , physics , thermodynamics , mathematics , chromatography
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.