Second harmonic generation microscopy of otoconia

Autor: Kennedy Brittain, MacAulay Harvey, Richard Cisek, Saranyan Pillai, Sean D Christie, Danielle Tokarz
Rok vydání: 2022
Předmět:
Zdroj: Biomed Opt Express
ISSN: 2156-7085
DOI: 10.1364/boe.457967
Popis: The origin of second harmonic generation (SHG) signal in otoconia was investigated. SHG signal intensity from otoconia was compared to pure calcite crystals, given calcite is the primary component of otoconia and is known to emit surface SHG. The SHG intensity from calcite was found to be ∼41× weaker than the SHG intensity from otoconia signifying that the SHG signal from otoconia is likely generated from the organic matrix. Furthermore, the SHG intensity from otoconia increased when treated with a chelating agent known to dissolve calcite which confirms that calcite is not the source of SHG. Additionally, polarization-resolved SHG microscopy imaging revealed that the arrangement of the SHG emitters is radial and can form highly ordered domains.
Databáze: OpenAIRE