Date of Award
Master of Science in Chemical Engineering - (M.S.)
Chemical, Biological and Pharmaceutical Engineering
Robert Benedict Barat
Dong Kyun Ko
Temperature measurement and manipulation is a critical factor in a wide range of applications like Point Of Care Diagnostics (POC's), Polymerase Chain Reaction (PCR), Temperature Gradient Focusing (TGF) to cite few prominent examples. In the past decade, researchers have used various techniques to sense and control the temperature in microfluidic systems. The primary challenge has been the twin problem of integration and accuracy using minimal equipment while keeping it simple. In this study, an equipment free fabrication of the temperature sensor using filter paper impregnated with p-type colloidal PbS quantum dots is demonstrated. This sensor is later integrated into line a PDMS microfluidic device with two parallel microfluidic channels. The integrated device is chiefly to sense the difference in temperature of fluids inside the two channels. COMSOL Multiphysics 5.1 is used to simulate the single-phase laminar fluid flow and heat transfer in the microchannel of the device. The design of the microfluidic channel is optimized to decrease heat sensing times of the sensor using the simulation results.
Shekhar, Vignesh, "Real time, integrated, paper based temperature sensor for lab on a chip device" (2017). Theses. 10.