The other is the Plateau–Rayleigh instability in the droplet retraction stage 13, 20, 21, 22, 23. One is the splashing that is dominated by the Kelvin–Helmholtz instability in the droplet spreading stage, where the thin air layer between the droplet and the solid is compressed and induces splashing at the edge of spreading droplet under certain criteria, thus producing satellite drops 15, 16, 17, 18, 19. Two types of instability exist during the droplet impact. A very essential branch is the investigation of the droplet instability suppression after impacting on various surfaces. These findings deepen the understanding of the wettability-induced asymmetrical droplet dynamics during the liquid–solid interactions, and facilitate related applications such as hydroelectric power generation and materials transportation.ĭroplet impact on solid surfaces has been extensively investigated owing to its significance in various fields such as hydroelectric power collection 1, 2, 3, 4, inkjet printing 5, 6, 7, 8, and anti-icing 9, 10, 11, 12, 13, 14. Accordingly, the droplet energy utilization was promoted, as demonstrated by the improved hydroelectric power generation efficiency by 36.5%. Systematic experimental investigation, together with mechanical modeling and numerical simulation, revealed that the asymmetric wettability patterns can regulate the internal liquid flow and reduce the vertical velocity gradient inside the droplet, thus suppressing the instability during droplet rebounding and eliminating the satellite drops. Herein, we found that breaking the symmetry of the droplet impact dynamics using patterned-wettability surfaces can suppress the Plateau–Rayleigh instability during the droplet rebounding and improve the energy collection efficiency. Particularly, controlling the instability after droplet impact, and avoiding the satellite drops generation, have aroused great interest for its significance in inkjet printing, pesticide spraying, and hydroelectric power collection. The Battista Tourbillon makes an immediate statement as soon as you put it on your wrist, and if you have it on when stepping out of your Automobili Pininfarina Battista hyper-GT, not another word needs to be said.Droplet impact on solid surfaces is essential for natural and industrial processes. The big date on the right-hand dial keeps you on schedule, and it is easily set thanks to a corrector on the side of the case. The flying tourbillon at 6 o’clock, in perpetual motion thanks to its astounding 10- day power reserve, is mesmerizing and a key point of focus when checking the time. Though at 45.6mm, the Battista could not be considered small, the configuration of the re-designed BOVET bow at the 12 0’clock positions makes it possible for the timepiece to fit just about any size of wrist.Īnd, thanks to the skeletonized structures of the movement itself and the sapphire crystals on both sides, the Battista is thin and extremely comfortable.
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Surprising light both in weight and in transparency, the Battista Tourbillon makes quite an impression when worn. We all need to move in this direction, and Automobili Pininfarina is inspiring us to use new methods and materials, and look at our processes with an eye to sustainability as well.”
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The Battista is a stunningly-designed hypercar, with almost 2,000 BHP, but it is 100% electric and sustainable. “This is what is so exciting about the beautiful Battista, which combines engineering excellence with hand-made attention to detail, like the fine timepieces of the House of BOVET. “The world is becoming more sustainable and the future is definitely in electric cars,” notes Mr.
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With Battista, Automobili Pininfarina is at the forefront of this new movement towards sustainable, responsible luxury and takes another step in the collaboration with BOVET 1822. The first timepiece in this partnership celebrates the creation of the first automobile designed and completely assembled in Cambiano – Battista – and the role of the pure-electric hyper GT in the ongoing luxury revolution.