Article Dans Une Revue AIP Advances Année : 2020

Optimal architecture for diamond-based wide-field thermal imaging

Rana Tanos
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Serge Monneret
Gediminas Seniutinas
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Mathieu Munsch
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Patrick Maletinsky
Anaïs Dréau
Csilla Gergely
Vincent Jacques
Guillaume Baffou

Résumé

Nitrogen-vacancy centers in diamonds possess an electronic spin resonance that strongly depends on temperature, which makes them efficient temperature sensors with sensitivity down to a few mK/√Hz. However, the high thermal conductivity of the host diamond may strongly damp any temperature variations, leading to invasive measurements when probing local temperature distributions. In the view of determining possible and optimal con gurations for diamond-based wide- eld thermal imaging, here, we investigate both experimentally and numeri- cally the effect of the presence of diamonds on microscale temperature distributions. Three geometrical con gurations are studied: a bulk diamond substrate, a thin diamond layer bonded on quartz, and diamond nanoparticles dispersed on quartz. We show that the use of bulk diamond substrates for thermal imaging is highly invasive in the sense that it prevents any substantial temperature increase. Conversely, thin diamond layers partly solve this issue and could provide a possible alternative for microscale thermal imaging. Dispersions of diamond nanoparticles throughout the sample appear as the most relevant approach as they do not affect the temperature distribution, although NV centers in nanodiamonds yield lower temperature sensitivities than bulk diamonds.

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Dates et versions

hal-02493073 , version 1 (25-05-2021)

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Rana Tanos, Mohammad Waseem Akhtar, Serge Monneret, Felipe Favaro de Oliveira, Gediminas Seniutinas, et al.. Optimal architecture for diamond-based wide-field thermal imaging. AIP Advances, 2020, 10, pp.025027. ⟨10.1063/1.5140030⟩. ⟨hal-02493073⟩
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