Ma Yuanping, Zhao Feng, Wang Lei, Ding Yuchen, Zhao Hongbin, Wang Hao, Liu Jing
Department of Stomatology, Beijing Tian Tan Hospital, Capital Medical University Beijing 100070 China.
Specialized Robot Engineering and Technological Center of Hainan Province, Hainan Vocational University of Science and Technology Haikou 571126 China.
RSC Adv. 2021 May 25;11(31):18783-18786. doi: 10.1039/d1ra03297f. eCollection 2021 May 24.
Stomata, specialized functional openings distributed on the leaf surface, are used for plant respiration by allowing gas exchange, , taking in carbon dioxide and releasing oxygen, and for water content regulation. Their function is vital to plant survival. Leaves with different wettability exhibit different stomata densities. In this study, we find that stomata on L. leaves are protected by superhydrophobic setae, which prevent direct contact between the stomata and water in humid environments by suspending water droplets on the top of the setae. Thus, oxygen and carbon dioxide are freely exchanged through the stomata. This structure inspired us to design and develop a mask for filtering solid particles and noxious gas from the atmosphere. The incoming gas is in convective contact with water, achieving a filtering efficiency. The solid particles and potential harmful gas in air are wetted and captured by water, leaving fresh air for healthy breathing. This novel design has potential applications in the treatment of respiratory diseases.
气孔是分布在叶片表面的特殊功能性开口，通过允许气体交换用于植物呼吸，吸入二氧化碳并释放氧气，还用于调节水分含量。它们的功能对植物生存至关重要。具有不同润湿性的叶片表现出不同的气孔密度。在本研究中，我们发现荷叶上的气孔受到超疏水刚毛的保护，这些刚毛通过将水滴悬浮在刚毛顶部来防止气孔在潮湿环境中与水直接接触。因此，氧气和二氧化碳通过气孔自由交换。这种结构启发我们设计并开发一种用于过滤大气中固体颗粒和有害气体的面罩。进入的气体与水进行对流接触，从而实现过滤效率。空气中的固体颗粒和潜在有害气体被水润湿并捕获，留下新鲜空气以供健康呼吸。这种新颖的设计在呼吸系统疾病治疗方面具有潜在应用。
