Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 47, Pages 53503-53509Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c15764
Keywords
swimmer; Marangoni effect; electrospinning; hollow fiber; surface tension
Funding
- National Natural Science Foundation of China (NSFC) [21975007, 21774005, 51803183, 21433012, 51772010]
- National Natural Science Foundation for Outstanding Youth Foundation
- Fundamental Research Funds for the Central Universities
- National Program for Support of Top-notch Young Professionals
- 111 Project [B14009]
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The rapid response movement caused by the Marangoni effect, a surface tension gradient-induced mass transfer behavior, has spurred considerable promise for diverse applications from microrobots and microreactors to smart drug delivery. Herein, we fabricated an aligned hollow fiber swimmer that showed self-propel movement on a water surface based on the Marangoni effect. By rational designing of an aligned hollow microstructure and an optimized geometrical shape, this swimmer can move continuously for more than 600 s and the maximum angular velocity can reach 22 rad center dot s(-1). The movement process of the swimmer is clearly monitored by infrared imaging and the process fluid migration. Moreover, this swimmer exhibited a highly controllable motion mode induced by a magnetic field and a concentration gradient. We designed a novel continuous motion system under the heat conversion from solar energy illumination into mechanical energy. This swimmer shows potential application prospects in controlled cargo transportation and convenient energy conversion systems.
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