Article

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

Sensors and Actuators B Chemical, Elsevier, ISSN 0925-4005

Volume 210, 2015

DOI:10.1016/j.snb.2014.12.102, Dimensions: pub.1032375687,

Authors

Koren, Klaus * (1)
Kühl, Michael (1) (2) (3)

* Corresponding author

Affiliations

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  1. (1) University of Copenhagen, grid.5254.6, KU
  2. (2) Nanyang Technological University, grid.59025.3b
  3. (3) University of Technology Sydney, grid.117476.2

Description

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 10s. 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.

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NORA University Profiles

University of Copenhagen

Danish Open Access Indicator

2015: Blocked

Research area: Science & Technology

Danish Bibliometrics Indicator

2015: Level 1

Research area: Science & Technology

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Times Cited: 17

Field Citation Ratio (FCR): 4.8