Commercial nanodiamonds for precise fluorescence-based temperature sensing
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2024-08-12 |
| Journal | Applied Physics Letters |
| Authors | Francisco Alejandro Pedroza-Montero, Karla SantacruzâGĂłmez, R. MelĂ©ndrez, M. BarbozaâFlores |
| Institutions | Universidad de Sonora |
Abstract
Section titled âAbstractâNanothermometry 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 °C. The NV0 and NVâ fluorescence intensities achieved high linear correlation values of 0.99 (INV0) and 0.94 (INVâ), respectively, demonstrating their efficiency in high precision temperature assessment. Additionally, we explore NV0 width as temperature increases, NV populations intensity ratios, and INV0/INVâ ratios to gain insights into thermal quenching phenomena in fluorescent nanodiamonds, where upon heating, an increasing trend for INVâ/(INV0+INVâ) is observed, while an antisymmetric effect takes place for INV0/(INV0+INVâ). These findings indicate the potential of commercial nanodiamonds for precise all-optical fluorescence-based temperature sensing.
Tech Support
Section titled âTech SupportâOriginal Source
Section titled âOriginal SourceâReferences
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