Three-dimensional temperature imaging around a gold microwire

Pierre Bon (1) , Nadia Belaid (2) , Denis Lagrange (3) , Christian Bergaud (4) , Hervé Rigneault (1) , Serge Monneret (1) , Guillaume Baffou (5)

1 MOSAIC - MOSAIC
2 LAAS - Laboratoire d'analyse et d'architecture des systèmes
3 LAAS-I2C - Service Instrumentation Conception Caractérisation
4 LAAS-NBS - Équipe NanoBioSystèmes
5 FRESNEL - Institut FRESNEL

We report on the temperature mapping around a resistively heated gold microwire. The temperature is determined by measuring the thermal-induced distortion of an incident optical wavefront crossing the system. The optical technique we introduce herein allows, in addition to 3-dimensional temperature measurements, a retrieval of the heat source density at optical resolution. Experimental results are supported by finite element simulations and electric measurements. Applications are envisioned in microelectronics, microfluidics or nanochemistry.

Domaines: Optique / photonique

Pierre Bon, Nadia Belaid, Denis Lagrange, Christian Bergaud, Hervé Rigneault, et al.. Three-dimensional temperature imaging around a gold microwire. Applied Physics Letters, 2013, 102, pp.244103. ⟨10.1063/1.4811557⟩. ⟨hal-00904675⟩