Spatiotemporally controlled nano-sized third harmonic generation agents

Dmitry Nevozhay, Michael Weiger, Peter Friedl, Konstantin V. Sokolov

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Here, we present a new class of third harmonic generation (THG) imaging probes that can be activated with precise spatiotemporal control using non-linear excitation. These probes consist of lipid-coated perfluorocarbon nanodroplets with embedded visible chromophores. The droplets undergo phase transition from liquid to gas upon heating mediated by two-photon absorption of NIR light by the embedded dyes. Resulting microbubbles provide a sharp, local refractive index mismatch, which makes an excellent source of THG signal. Potential applications of these probes include activatable THG agents for biological imaging and “on-demand” delivery of various compounds under THG monitoring.

Original languageEnglish (US)
Article number364132
Pages (from-to)3301-3316
Number of pages16
JournalBiomedical Optics Express
Volume10
Issue number7
DOIs
StatePublished - Jul 2019

ASJC Scopus subject areas

  • Biotechnology
  • Atomic and Molecular Physics, and Optics

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