Fluorescent nanodiamonds for luminescent thermometry in the biological transparency window. Academic Article

abstract

• Fluorescent nanodiamonds (FNDs) have attracted recent interest for biological applications owing to their biocompatibility and photostability (absence of photoblinking and bleaching). For optical thermometry, nitrogen-vacancy (NV) color centers and silicon-vacancy color centers in diamonds have demonstrated potential, where the NV has the highest sensitivity. However, NV is often excited with green light, which can cause heating and photodamage to tissues, as well as autofluorescence that decreases sensitivity. To overcome these limitations, we report temperature sensing using NV centers excited by deep red light (660nm), plus another color center that can be excited with NIR light; the nickel (Ni) complex. The NV center measures temperature using diamond lattice expansion while the Ni complex measures temperature using phonon sideband strength.

authors

• Hemmer, Philip
• Scully, Marlan

published proceedings

• Opt Lett

author list (cited authors)

• Alkahtani, M. H., Alghannam, F., Jiang, L., Rampersaud, A. A., Brick, R., Gomes, C. L., Scully, M. O., & Hemmer, P. R.

citation count

• 32

complete list of authors

• Alkahtani, Masfer H||Alghannam, Fahad||Jiang, Linkun||Rampersaud, Arfaan A||Brick, Robert||Gomes, Carmen L||Scully, Marlan O||Hemmer, Philip R

publication date

• July 2018

publisher

• Optica Publishing Group  Publisher

published in

• Optics Letters  Journal

keywords

• Biosensing Techniques
• FLUORESCENCE
• Nanodiamonds
• Nickel
• Nitrogen
• Thermometry

PubMed Central ID

• 30004495

Digital Object Identifier (DOI)

• 10.1364/OL.43.003317

start page

• 3317

end page

• 3320

volume

• 43

issue

• 14