Living cell imaging by far-field fibered interference scanning optical microscopy

Abstract

We report on the imaging of biological cells including living neurons by a dedicated fibered interferometric scanning optical microscope. The topography and surface roughness of mouse fibroblasts and hippocampal neurons are clearly revealed. This straightforward far-field technique allows fast, high resolution observation of samples in liquids without lengthy alignment procedures or costly components.

Single and dual fiber nano-tip optical tweezers: trapping and analysis

“…In the present paper, we report on optical trapping of micrometer size dielectric particles using one or two bare optical fiber nano-tips. These chemically etched fiber tips with nanometer size apex were already used for high resolution optical scanning microscopy [19]. The trapping efficiency at different light powers and fiber distances is evaluated by analyzing the experimental data within three different models that find very consistent results.…”

Spaser spectroscopy with subwavelength spatial resolution

“…Some examples are future optical computers, 1, 2 optical memory, 3 optical lithography of high (subwavelength) spatial resolution, 4,5 as well as scanning near-field optical microscopy (SNOM). [6][7][8][9][10][11][12][13][14][15] It is the use of the optical near-field that makes it possible to overcome the Rayleigh limit of spatial resolution ~λ , which determines the lower bound for the size of optical devices. The aperture realization of SNOM is based on light transmission through the small (subwavelength) hole.…”