Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison of the spring constant experienced by lipid droplets and polystyrene beads at the same laser power. As expected, trapped lipid droplets feel a stiffer confinement when their diameter increases. At diameters between 400 nm and 800 nm, this increase is approximately linear at a slope of 17 pN/μm2 (black line). The confinement of 500-nm-diameter (black squares) and 1-μm-diameter (black triangles) polystyrene beads is stronger, but of the same order of magnitude.
