Commercial nanodiamonds for precise fluorescence-based temperature sensing
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-08-12 |
| Journal | Applied Physics Letters |
| Authors | Francisco Alejandro Pedroza-Montero, Karla SantacruzāGĆ³mez, R. MelĆ©ndrez, M. BarbozaāFlores |
| Institutions | Universidad de Sonora |
Abstract
Section titled āAbstractāNanothermometry is crucial for understanding physical, chemical, and biological systems, which require precise temperature measurement. Fluorescent nanodiamonds containing nitrogen-vacancy (NV) color centers offer an approach to temperature sensing. In this study, we present the spectrofluorometric characteristics of the NV zero-phonon lines (575 and 637 nm), in 100 nm nanodiamonds in aqueous volume ensembles at a concentration of 0.5 mg/ml, across the temperature range of 30-45 Ā°C. The NV0 and NVā fluorescence intensities achieved high linear correlation values of 0.99 (INV0) and 0.94 (INVā), respectively, demonstrating their efficiency in high precision temperature assessment. Additionally, we explore NV0 width as temperature increases, NV populations intensity ratios, and INV0/INVā ratios to gain insights into thermal quenching phenomena in fluorescent nanodiamonds, where upon heating, an increasing trend for INVā/(INV0+INVā) is observed, while an antisymmetric effect takes place for INV0/(INV0+INVā). These findings indicate the potential of commercial nanodiamonds for precise all-optical fluorescence-based temperature sensing.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
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