Optical transport of sub-micron lipid vesicles along a nanofiber

Takaaki Yoshino, Daichi Yamaura, Maki Komiya, Masakazu Sugawara, Yasuyoshi Mitsumori, Michio Niwano, Ayumi Hirano-Iwata, Keiichi Edamatsu, Mark Sadgrove

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Enhanced manipulation and analysis of bio-particles using light confined in nano-scale dielectric structures has proceeded apace in the last several years. Small mode volumes, along with the lack of a need for bulky optical elements give advantages in sensitivity and scalability relative to conventional optical manipulation. However, manipulation of lipid vesicles (liposomes) remains difficult, particularly in the sub-micron diameter regime. Here we demonstrate the optical trapping and transport of sub-micron diameter liposomes along an optical nanofiber using the nanofiber mode’s evanescent field. We find that nanofiber diameters below a nominal diffraction limit give optimal results. Our results pave the way for integrated optical transport and analysis of liposome-like bio-particles, as well as their coupling to nano-optical resonators.

Original languageEnglish
Pages (from-to)38527-38538
Number of pages12
JournalOptics Express
Issue number26
Publication statusPublished - 2020 Dec 21


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