Diffusioosmotic and convective flows induced by a nonelectrolyte concentration gradient.

ABSTRACT: Glucose is an important energy source in our bodies, and its consumption results in gradients over length scales ranging from the subcellular to entire organs. Concentration gradients can drive material transport through both diffusioosmosis and convection. Convection arises because concentration gradients are mass density gradients. Diffusioosmosis is fluid flow induced by the interaction between a solute and a solid surface. A concentration gradient parallel to a surface creates an osmotic pressure gradient near the surface, resulting in flow. Diffusioosmosis is well understood for electrolyte solutes, but is more poorly characterized for nonelectrolytes such as glucose. We measure fluid flow in glucose gradients formed in a millimeter-long thin channel and find that increasing the gradi

SUBMITTER: Williams I 

PROVIDER: S-EPMC7568292 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature