A simple laminated paper-based sensor for temperature sensing and imaging

TY - JOUR

T1 - A simple laminated paper-based sensor for temperature sensing and imaging

AU - Koren, Klaus

AU - Kühl, Michael

PY - 2015/4

Y1 - 2015/4

N2 - We describe a low cost optical temperature sensor that is simple to manufacture. The sensor is constructed by simple soaking of paper in a solution of the temperature sensitive luminescent indicator Ru(phen)3 and subsequent lamination of the dried paper. Lamination prevents O2 diffusion to the indicator and thus eliminates O2 cross-sensitivity. The temperature sensitivity was up to -2% change in luminescence lifetime per K, a t90 response time of 10 s. Besides luminescence lifetime based measurements, the sensor is well suited for ratiometric imaging with simple RGB cameras, where the temperature dependent red luminescence can be referenced by the blue luminescence of the optical brightener in the paper.

AB - We describe a low cost optical temperature sensor that is simple to manufacture. The sensor is constructed by simple soaking of paper in a solution of the temperature sensitive luminescent indicator Ru(phen)3 and subsequent lamination of the dried paper. Lamination prevents O2 diffusion to the indicator and thus eliminates O2 cross-sensitivity. The temperature sensitivity was up to -2% change in luminescence lifetime per K, a t90 response time of 10 s. Besides luminescence lifetime based measurements, the sensor is well suited for ratiometric imaging with simple RGB cameras, where the temperature dependent red luminescence can be referenced by the blue luminescence of the optical brightener in the paper.

U2 - 10.1016/j.snb.2014.12.102

DO - 10.1016/j.snb.2014.12.102

M3 - Journal article

SN - 0925-4005

VL - 210

SP - 124

EP - 128

JO - Sensors and Actuators B: Chemical

JF - Sensors and Actuators B: Chemical

ER -