Quantitative Temperature Measurements in Gold Nanorods Using Digital Holography

Adrien Lalisse (1, 2) , Abeer Al Mohtar (1, 3) , Minh Chau Nguyen (4) , Rémi Carminati (3) , Jérôme Plain (2) , Gilles Tessier (4)

1 UMR 8250 - Laboratoire de Neurophotonique
2 L2n - Lumière, nanomatériaux et nanotechnologies
3 IL - Institut Langevin - Ondes et Images (UMR7587)
4 Institut de la Vision

Temperature characterization and quantification at the nanoscale remain core challenges in applications based on photoinduced heating of nanoparticles. Here, we propose a new approach to obtain quantitative temperature measurements on individual nanoparticles by combining modulated photothermal stimulation and heterodyne digital holography. From full-field reconstructed holograms, the temperature is determined with a precision of 0.3 K via a simple approach without requiring any calibration or fitting parameters. As an application, the dependence of temperature on the aspect ratio of gold nanoparticles is investigated. A good agreement with numerical simulation is observed.

Mots clés: thermoplasmonics; digital holography; photothermal holography; gold nanostructures; optical modeling; thermal modeling

Domaines: Matériaux; Instrumentations et Détecteurs [physics.ins-det]

Adrien Lalisse, Abeer Al Mohtar, Minh Chau Nguyen, Rémi Carminati, Jérôme Plain, et al.. Quantitative Temperature Measurements in Gold Nanorods Using Digital Holography. ACS Applied Materials & Interfaces, 2021, 13 (8), pp.10313-10320. ⟨10.1021/acsami.0c22420⟩. ⟨hal-03148575⟩