Work

Light-sheet microscopy with digital Fourier analysis measures transport properties over large field-of-view

Year: 2016

Type: article

Abstract: Using light-sheet microscopy combined with digital Fourier methods we probe the dynamics of colloidal samples and DNA molecules. This combination, referred to as selective-plane illumination differential dynamic microscopy (SPIDDM), has the benefit of optical sectioning to study, with minimal photobleaching, thick samples allowing us to measure the diffusivity of colloidal particles at high volume fractions. Further, SPIDDM exploits the inherent spatially-varying thickness of Gaussian light-sheets. Where the excitation sheet is most focused, we capture high spatial frequency dynamics as the signal-to-background is high. In thicker regions, we capture the slower dynamics as diffusion out of the sheet takes longer.

Source: Optics Express

DOI: 10.1364/oe.24.020881

Authors: Devynn M. Wulstein, Kathryn E. Regan, Rae M. Robertson-Anderson, Ryan McGorty

Language: English

Topic: Digital Holography and Microscopy

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: University of San Diego, Air Force Office of Scientific Research

Award: G8854164062