2 research outputs found
Fabrication of Slippery Lubricant-Infused Porous Surface for Inhibition of Microbially Influenced Corrosion
Microbially influenced corrosion
(MIC) accelerates the failure
of metal in a marine environment. In this research, slippery lubricant-infused
porous surface (SLIPS) was designed on aluminum, and its great potential
for inhibiting MIC induced by sulfate-reducing bacteria (SRB) was
demonstrated in a simulated marine environment. The inhibition mechanism
of SLIPS to MIC was proposed based on its effective roles in the suppression
of SRB settlement and isolation effect to corrosive metabolites. The
liquid-like property is demonstrated to be the major contributor to
the suppression effect of SLIPS to SRB settlement. The effects of
environmental factors (static and dynamic conditions) and lubricant
type to SRB settlement over SLIPS were also investigated. It was indicated
that the as-fabricated SLIPS can inhibit the SRB settlement in both
static and dynamic marine conditions, and lubricant type presents
a negligible effect on the SRB settlement. These results will provide
a series of foundational data for the future practical application
of SLIPS in the marine environment, and also a lubricant selecting
instruction to construct SLIPS for MIC control
Fabrication of Slippery Lubricant-Infused Porous Surface with High Underwater Transparency for the Control of Marine Biofouling
Marine optical instruments
are bearing serious biofouling problem,
which affects the accuracy of data collected. To solve the biofouling
problem of marine optical instruments, a novel instance of slippery
lubricant-infused porous surface (SLIPS) with high underwater-transparency
was designed over glass substrate via infusing lubricant into its
porous microstructure fabricated with hydrothermal method. The advantage
of SLIPS as antibiofouling strategy to marine optical instruments
was proven by comparing its underwater optical and antibiofouling
performances with three kinds of samples (hydrophilic glass sample,
textured hydrophilic glass sample, and superhydrophobic glass sample).
The modification of SLIPS enhances the underwater-transparency of
glass sample within the wavelength of 500–800 nm, for the infusion
of lubricant with lower refractive index than glass substrate. In
contrast with hydrophilic surface, textured hydrophilic surface and
superhydrophobic surface, SLIPS can significantly inhibit bacterial
and algal settlements, thereby maintaining high underwater-transparency
in both dynamic and static seawater. The inhibition of bacterial and
algal settlements over SLIPS results from its liquid-like property.
The contact angle hysteresis of water over SLIPS increases with immersion
time in seawater under different conditions (static, dynamic, and
vibration conditions). Both dynamic and vibration conditions accelerate
the failure of SLIPS exposed in seawater. This research provides valuable
information for solving biofouling problem of marine optical instruments
with SLIPS