title: Measurement of contact angles in a simulated microgravity environment generated by a large gradient magnetic field.
abstract: The contact angle is an important parameter that is essential for studying interfacial phenomena. The contact angle can be measured using commercially available instruments. However, these well-developed instruments may not function or may be unsuitable for use in some special environments. A simulated microgravity generated by a large gradient magnetic field is such an environment in which the current measurement instruments cannot be installed. To measure the contact angle in this environment, new tools must be designed and manufactured to be compatible with the size and physical environment. In this study, we report the development and construction of a new setup that was specifically designed for use in a strong magnetic field to measure the contact angle between a levitated droplet and a solid surface. The application of the setup in a large gradient magnetic field was tested, and the contact angles were readily measured.
authors: Key Lab of Space Bioscience and Biotechnology, School of Life Science, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, People's Republic of China.
authors: Yong-Ming
authors: YM
authors: Liu
authors: Key Lab of Space Bioscience and Biotechnology, School of Life Science, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, People's Republic of China.
authors: Rui-Qing
authors: RQ
authors: Chen
authors: Key Lab of Space Bioscience and Biotechnology, School of Life Science, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, People's Republic of China.
authors: Zi-Qing
authors: ZQ
authors: Wu
authors: Key Lab of Space Bioscience and Biotechnology, School of Life Science, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, People's Republic of China.
authors: Jing
authors: J
authors: Zhu
authors: Key Lab of Space Bioscience and Biotechnology, School of Life Science, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, People's Republic of China.
authors: Jian-Yu
authors: JY
authors: Shi
authors: Key Lab of Space Bioscience and Biotechnology, School of Life Science, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, People's Republic of China.
authors: Hui-Meng
authors: HM
authors: Lu
authors: Key Lab of Space Bioscience and Biotechnology, School of Life Science, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, People's Republic of China.
authors: Peng
authors: P
authors: Shang
authors: Key Lab of Space Bioscience and Biotechnology, School of Life Science, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, People's Republic of China.
authors: Da-Chuan
authors: DC
authors: Yin