title: The impact mitigation of a heterojunction nanotube-water system: behavior and mechanism.
abstract: A novel nanofluidic impact protection system is introduced in this paper, consisting of hydrophobic heterojunction carbon nanotubes (HCNTs) and water molecules. When the capillary resistance of the nanopores is overcome, water molecules can infiltrate into nanopores such as to convert external impact energy into excessive surface energy. A model of a single HCNT with water molecules in a reservoir is established and validated. The effects of several dominant parameters (e.g., nanopore size, impact velocity) are evaluated, and the potential mechanism is illustrated. The effect of the carbon nanotube structure on the nanofluidic behavior of the HCNT-water system is investigated. Results reveal that the segment of carbon nanotubes close to the water reservoir determines the energy absorption efficiency of the system.
authors.affiliation: Department of Aircraft Airworthiness Engineering, School of Transportation Science and Engineering, Beihang University, Beijing, 100191, China and Advanced Vehicle Research Center, Beihang University, Beijing, 100191, China. junxu@buaa.edu.cn and Airworthiness Technologies Research Center, Beihang University, Beijing, 100191, China.
authors.forename: Dayong
authors.initials: D
authors.lastname: Hu
authors.affiliation: Department of Aircraft Airworthiness Engineering, School of Transportation Science and Engineering, Beihang University, Beijing, 100191, China and Advanced Vehicle Research Center, Beihang University, Beijing, 100191, China. junxu@buaa.edu.cn and Airworthiness Technologies Research Center, Beihang University, Beijing, 100191, China.
authors.forename: Hanlin
authors.initials: H
authors.lastname: Jiang
authors.affiliation: Department of Aircraft Airworthiness Engineering, School of Transportation Science and Engineering, Beihang University, Beijing, 100191, China and Advanced Vehicle Research Center, Beihang University, Beijing, 100191, China. junxu@buaa.edu.cn and Airworthiness Technologies Research Center, Beihang University, Beijing, 100191, China.
authors.forename: Kangpei
authors.initials: K
authors.lastname: Meng
authors.affiliation: Advanced Vehicle Research Center, Beihang University, Beijing, 100191, China. junxu@buaa.edu.cn and Department of Automotive Engineering, School of Transportation Science and Engineering, Beihang University, Beijing, 100191, China and Beijing Key Laboratory for High-efficient Power Transmission and System Control of New Energy Resource Vehicle, Beihang University, Beijing, 100191, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Xu
authors.affiliation: Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI 48824, USA. wylu@egr.msu.edu.
authors.forename: Weiyi
authors.initials: W
authors.lastname: Lu