Journal
LANGMUIR
Volume 30, Issue 27, Pages 8101-8108Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la501628d
Keywords
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Funding
- Japan Society for the Promotion of Science (JSPS) [23740299, 24740256, 25410094, 25103008]
- JSPS
- Japan Science and Technology Agency Precursory Research for Embryonic Science and Technology (PRESTO) program
- Sekisui Chemical Grant Program for Research on Manufacturing Based on Innovations Inspired by Nature
- Institute of Science and Technology Meiji University
- Meiji University from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan
- Grants-in-Aid for Scientific Research [24740256, 23740299, 25103008, 25410094] Funding Source: KAKEN
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Quantitative information on the parameters associated with self-propelled objects would enhance the potential of this research field; for example, finding a realistic way to develop a functional self-propelled object and quantitative understanding of the mechanism of self-motion. We therefore estimated five main parameters, including the driving force, of a camphor boat as a simple self-propelled object that spontaneously moves on water due to difference in surface tension. The experimental results and mathematical model indicated that the camphor boat generated a driving force of 4.2 mu N, which corresponds to a difference in surface tension of 1.1 mN m(-1). The methods used in this study are not restricted to evaluate the parameters of self-motion of a camphor boat, but can be applied to other self-propelled objects driven by difference in surface tension. Thus, our investigation provides a novel method to quantitatively estimate the parameters for self-propelled objects driven by the interfacial tension difference.
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