Heating effects of low power surface plasmon resonance sensors

•We measure the local heating of SPR sensors induced by the laser.•Increase of sensor surface temperature up to 1°C is found with low power lasers.•Heating of the glass do not alter the optics of the sensor. We present here a study of the possible local heating effects in surface plasmon resonance s...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2017-05, Vol.243, p.806-811
Main Authors: Galvez, F., Pérez de Lara, D., Spottorno, J., García, M.A., Vicent, J.L.
Format: Article
Language:English
Subjects:
Computer simulation
Electric power
Electrons
Laser beam heating
Local heating
Sensors
Surface chemistry
Surface plasmon resonance
Surface plasmons
Temperature effects
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Summary:•We measure the local heating of SPR sensors induced by the laser.•Increase of sensor surface temperature up to 1°C is found with low power lasers.•Heating of the glass do not alter the optics of the sensor. We present here a study of the possible local heating effects in surface plasmon resonance sensors using low power lasers (∼mW/mm2). By measuring the increase of electrical resistivity in an Au stripe while exciting SPR and performing numerical simulations we determine upper limits to the local heating that result of the order of ∼0.1K and ∼1K for laser power densities of 1.5mW/mm2 and 15mW/mm2 respectively.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2016.12.053