Journal ArticleDOI
Fog-Harvesting Potential of Lubricant-Impregnated Electrospun Nanomats
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Hydrophobic PVDF-HFP nanowebs were fabricated by a facile electrospinning method and proposed for harvesting fog from the atmosphere and a strong adhesive force between the surface and a water droplet has been observed, which resists the water being shed from the surface.Abstract:
Hydrophobic PVDF-HFP nanowebs were fabricated by a facile electrospinning method and proposed for harvesting fog from the atmosphere. A strong adhesive force between the surface and a water droplet has been observed, which resists the water being shed from the surface. The water droplets on the inhomogeneous nanomats showed high contact angle hysteresis. The impregnation of nanomats with lubricants (total quartz oil and Krytox 1506) decreased the contact angle hysteresis and hence improved the roll off of water droplets on the nanomat surface. It was found that water droplets of 5 μL size (diameter = 2.1 mm) and larger roll down on an oil-impregnated surface, held vertically, compared to 38 μL (diameter = 4.2 mm) on a plain nanoweb. The contact angle hysteresis decreased from ∼95 to ∼23° with the Krytox 1506 impregnation.read more
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Slippery Lubricant-Infused Surfaces: Properties and Emerging Applications
Journal ArticleDOI
The effects of surface wettability on the fog and dew moisture harvesting performance on tubular surfaces.
TL;DR: This work compares the water harvesting performance of the surfaces with various wettability under two different harvesting conditions–dewing and fogging, and shows that the different harvesting efficiency of each surface under these two conditions can be understood by considering the relative importance of the water capturing and removal efficiency of the surface.
Journal ArticleDOI
Silicone Oil-Infused Slippery Surfaces Based on Sol-Gel Process-Induced Nanocomposite Coatings: A Facile Approach to Highly Stable Bioinspired Surface for Biofouling Resistance
TL;DR: The unique ultralow bacterial attachment and remarkably long-term protein-resistant performance render the as-prepared SLIPS as a promising candidate for biomedical applications even under harsh environmental conditions.
Journal ArticleDOI
Fog Harvesting with Harps
TL;DR: This work designs and fabricates fog harvesters comprising an array of vertical wires, which they are called "fog harps", and finds that the fog-harvesting rate continually increased with decreasing wire diameter for the fog harps due to efficient droplet shedding that prevented clogging.
Journal ArticleDOI
Air-stable droplet interface bilayers on oil-infused surfaces
TL;DR: It is demonstrated that when two or more water droplets collide on an oil-infused substrate, they exhibit noncoalescence due to the formation of a thin oil film that gets squeezed between the droplets from the bottom up, revealing that droplet interface bilayers can function in ambient environments.
References
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Journal ArticleDOI
Science and technology for water purification in the coming decades
Mark A. Shannon,Paul W. Bohn,Paul W. Bohn,Menachem Elimelech,Menachem Elimelech,John G. Georgiadis,Benito J. Mariñas,Anne M. Mayes,Anne M. Mayes +8 more
TL;DR: Some of the science and technology being developed to improve the disinfection and decontamination of water, as well as efforts to increase water supplies through the safe re-use of wastewater and efficient desalination of sea and brackish water are highlighted.
Journal ArticleDOI
Electrospinning of Nanofibers: Reinventing the Wheel?†
Dan Li,Younan Xia +1 more
TL;DR: An overview of electrospinning can be found in this article, where the authors focus on progress achieved in the last three years and highlight some potential applications associated with the remarkable features of electro-spun nanofibers.
Journal ArticleDOI
Electrospinning: A Fascinating Method for the Preparation of Ultrathin Fibers
TL;DR: Electrospinning is a highly versatile method to process solutions or melts, mainly of polymers, into continuous fibers with diameters ranging from a few micrometers to a few nanometers, applicable to virtually every soluble or fusible polymer.