Misael Diaz  University of Puerto Rico at Mayagüez, Mayagüez,
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your profile  Publications (2)9.77 Total impact    • [show
abstract] [hide abstract]     ABSTRACT: While a large body of
work exists on the design of catalytically-driven colloidal
particles, little work exists on particles with the ability to
permeate fluid through its surface that may be used for
applications in lab-on-a-chip systems and drug delivery. We
propose a model for the catalytically-driven motion of a
semipermeable particle (e.g., non-motile microorganisms and
vesicles) surrounded by reactant solutes in a Newtonian fluid.
It is assumed that a first-order consumption reaction of
surrounding reactants---which could be enzymatic or catalytic---
occurs on half of the outer surface of the membrane. In
equilibrium, the osmotic pressure inside the particle balances
that of outside. The reaction creates an imbalance in osmotic
pressure, causing outer fluid facing the catalytic side to