Pitcher plant-bioinspired bubble slippery surface fabricated by femtosecond laser for buoyancy-driven bubble self-transport and efficient gas capture

Abstract

Pitcher plant-bioinspired bubble slippery surface fabricated by femtosecond laser for buoyancy-driven bubble self-transport and efficient gas capture.

Remote Photothermal Actuation of Underwater Bubble toward Arbitrary Direction on Planar Slippery Fe3O4‐Doped Surfaces

“…Yu et al presented a lubricant‐infused slippery surface constructed by filter paper, polydimethylsiloxane (PDMS), hydrofluorosilicic acid, and silicone oil with outstanding water repellency, which was shaped for in situ capture and delivery of bubbles in aqueous environment . Jiao et al designed a lubricated slippery surface fabricated by femtosecond laser for buoyancy‐driven bubble self‐transport and gas capture . More recently, Guo et al achieved the dynamic control between pinning and sliding for liquid droplet and bubble on an amphibious slippery Fe/PDMS gel surface by loading/discharging external magnetic stimuli .…”

“…However, several severe blockages arise subsequently: 1) Most of the hydrophobic/aerophilic platforms were fabricated by chemical etching or hydrophobic NP modification, which is not eco‐friendly and time‐consuming . 2) Achieving bubble directional transport and delivery is either limited to wettability gradient force arising from platform's geography (e.g., tapered shapes) or dependent on buoyant force, which hindered its practical application in dynamic underwater gas bubble (UGB) control (e.g., pinning and sliding) on horizontal substrates . Though controllable motion between pinning and sliding for UGB has been realized by a magnetic stimulus, the driving force is dominated by buoyant force, and thus can only drive the bubble at titled surface .…”

Progress in Bioinspired Dry and Wet Gradient Materials from Design Principles to Engineering Applications

“…Once decorated, the lubricated slippery surface on a large area on the gas catcher is used to capture underwater bubbles. The device keeps working with an air output of 3.4 L min −1 and obtains a capture efficiency of up to 90% ( Jiao et al., 2019 ). These bionic designs provide inspiration for related fields and effectively realize energy collection and are environmental friendly.…”

Patterned Slippery Surface for Bubble Directional Transportation and Collection Fabricated via a Facile Method

“…Thus, it is hard to realize the directional transportation of underwater bubbles on superhydrophobic substrates, while in previous work the directional transportation of bubbles has been accomplished by a slippery surface with shape gradient structure [25]. Therefore, based on those researches, the slippery surface fabricated by the superhydrophobic substrate with infused oil layer was conducive to capture and transport bubbles [25,[34][35][36][37]39]. In this work, we have fabricated patterned slippery surface (PSS) with different widths to achieve the goal of directional manipulation.…”

“…Bubbles tend to spread rapidly and adhere to the surface due to the interaction of air and substrates [25][26][27]. Inspired by the movement of water droplets or insects on Pitcher plant, spider silk, and cactus spine [28][29][30][31][32][33], the slippery surfaces with a lubricant layer and the substrates with a geometrical gradient have been applied largely in the directional manipulation of underwater bubbles [7,10,[34][35][36][37][38][39][40][41]. Zhang et al [34] designed a wedge-shaped superhydrophobic surface with a lubricant layer via laser cutting for this directional movement.…”