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- Title
Terahertz Thermometry: Combining Hyperspectral Imaging and Temperature Mapping at Terahertz Frequencies.
- Authors
Naccache, Rafik; Mazhorova, Anna; Clerici, Matteo; Piccoli, Riccardo; Khorashad, Larousse Khosravi; Govorov, Alexander O.; Razzari, Luca; Vetrone, Fiorenzo; Morandotti, Roberto
- Abstract
The accurate and non-invasive determination of multiple physical parameters, with well-defined spatial resolution, is crucial for applications in manufacturing, chemistry, medicine and biology. Specifically, the ability to simultaneously measure both temperature and spectral signatures is still experimentally unavailable. To this end, we propose a mapping technique for biological systems, which exploits a linear correlation between terahertz wave reflectivity and temperature, and allows to spatially and spectrally resolve thermal distributions. This method is applied to a model biological system in two relevant cases where in one example, nanoplasmonic-induced photothermal effects are imaged gaining new insights into collective heating phenomena. In the second example, we demonstrate a joint thermal-hyperspectral imaging approach to chemically map the presence of a model drug formulation and simultaneously investigate its thermal stability in our biological system. This concept can be easily extended and widely applied to all materials that demonstrate a measurable change in their dielectric properties.
- Subjects
THERMOMETRY; TERAHERTZ technology; HYPERSPECTRAL imaging systems; PLASMONICS; MATHEMATICAL mappings
- Publication
Laser & Photonics Reviews, 2017, Vol 11, Issue 5, pn/a
- ISSN
1863-8880
- Publication type
Article
- DOI
10.1002/lpor.201600342