| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 봄 (05/01 ~ 05/03, 부산 벡스코(BEXCO)) |
| 권호 |
23권 1호 |
| 발표분야 |
콜로이드·계면화학_포스터 |
| 제목 |
Brownian motion of anisotropic particles in microgravity |
| 초록 |
In the universe, Brownian motion is fascinating phenomena that give great impact in the field of science and engineering. On earth, it is experimentally difficult to observe original Brownian motion of anisotropic particle due to buoyancy-driven force and sedimentation. Their original 3-dimensional (3D) Brownian motion is replaced by quasi 2-dimensional (2D) motion at long time scale because the colloidal particles usually settle down in a liquid due to gravity. Here we report the observation of 3D rotational Brownian motion of anisotropic colloidal particle in International Space Station (ISS) with the Light microscopy module (LMM). We find that the hydrophobic surface enhance their 3D rotational Brownian motion. Our observation is the measurement of 3D rotational Brownian motion of an anisotropic colloidal particle in microgravity where one can connect the combined effects of shape with the amount of a hydrophobic surface present. |
| 저자 |
심규락1, 정성근1, William V. Meyer2, Ronald J. Sicker3, Dan Brown4, 이창수5
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| 소속 |
1충남대, 2Universities Space Research Association (USRA), 3NASA Glenn Research Center, 4ZIN Technologies, 5Inc. |
| 키워드 |
microgravity; Brownian motion; anisotropic particle
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| E-Mail |
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