帖子
勋章
关注
任务
科学家研发出太阳能动力轻便扑翼  由中国科学家团队创建的“柔性生物蝴蝶翅膀”（FBBW）由薄的聚合物片材制成，并在其顶部涂有纳米晶体金属膜。原型设备水平放置，一端固定在固定支架上，另一端可以自由移动。 当模拟阳光照射到FBBW上时，两种材料的温度升高，从而使它们膨胀。但是，由于下面的FEP（氟化乙烯丙烯）聚合物比顶部的金属膜膨胀更多，因此扑翼通过向内和向上卷曲来响应。一旦完全卷曲，弯曲的顶部就会遮盖FBBW的其余部分，使其冷却，从而变平。通过这种方式，该设备会快速反复地向上和向下卷曲，从而产生拍打动作，该拍打动作比实际的蝴蝶翅膀快。 在该系统的演示中，研究人员制造了一种光动力旋转陀螺仪，一种玩具帆船，该帆船通过挥舞帆而在水上移动，以及一种通过机翼拍动发电的装置。尽管到目前为止，还没有制造出配备FBBW的飞行微型机器人，但这确实是该技术未来可能的用途之一。 科学家最近在《ACS应用材料与界面》杂志上发表了有关该研究的论文。 关键词： 太阳能
分享到：
|
最新评论
-
dushunli 2020-02-21 00:11太阳能动力！
-
mang2004 2020-02-21 01:16https://pubs.acs.org/doi/10.1021/acsami.9b20250
Sunlight-Driven Continuous Flapping-Wing Motion
Abstract
Light-driven actuators that directly convert light into mechanical work have attracted significant attention due to their wireless advantage and ability to be easily controlled. However, a fundamental impediment to their application is that the continuous motion of light-driven flexible actuators usually requires a periodically switching light source or the coordination of other additional hardware. Here, for the first time, continuous flapping-wing motion under sunlight is realized through the utilization of a simple nanocrystalline metal polymer bilayer structure without the coordination of additional hardware. The light-driven performance can be controlled by adjusting the grain size of the upper nanocrystalline metallic layer or selecting metals with different thermodynamic parameters. The achieved highest frequency of flapping-wing motion is 4.49 Hz, which exceeds the frequency of real butterfly wings, thus informing the further development of sunlight-driven bionic flying animal robotics without external energy consumption. The flapping-wing motion has been used to realize a light-driven whirligig, a light-driven sailboat, and photoelectric energy harvesting. Furthermore, the flexible bilayer actuator features the ability to be driven by light and electricity, low-power actuation, a large deflection, fast actuation speed, long-time stability, strong design ability, and large-area facile fabrication. The bilayer film considered herein represents a simple, general, and effective strategy for preparing photoelectric-driven flexible actuators with target performances and informs the standardization and industrial application of flexible actuators in the future.
-
bairuizheng 2020-02-21 01:50柔性生物蝴蝶翅膀
-
tassy 2020-02-21 02:13柔性生物翅膀
-
likaihit 2020-02-21 07:48[资讯]科学家研发出太阳能动力轻便扑翼
-
redplum 2020-02-21 07:49[资讯]科学家研发出太阳能动力轻便扑翼
-
mmttxiaoxiao 2020-02-21 08:35材料应用，前景广泛
-
木子示羊 2020-02-21 09:19太阳能动力轻便扑翼
-
wgd_sl 2020-02-21 09:42神奇的材料
-
songshaoman 2020-02-21 09:47好神奇，薄如蝉翼