Masahiro I. Kohira Hiroyuki Kitahata Nobuyuki Magome Kenichi Yoshikawa
PHYSICAL REVIEW E 85(2) 2012年2月 [査読有り]
An oscillatory system called a plastic bottle oscillator is studied, in which the downflow of water and upflow of air alternate periodically in an upside-down plastic bottle containing water. It is demonstrated that a coupled two-bottle system exh...
Shun N. Watanabe Takafumi Iwaki Masahiro I. Kohira Nobuyuki Magome Kenichi Yoshikawa
CHEMICAL PHYSICS LETTERS 511(4-6) 447-451 2011年8月 [査読有り]
We observed the photophoresis of smoke particles in a small focal laser beam under micro-gravity, exerted in an airplane, to avoid air convectional flow due to buoyancy. We measured the motion of smoke particles and found that the particles exhibi...
INTERNATIONAL JOURNAL OF UNCONVENTIONAL COMPUTING 5(1) 103-111 2009年 [査読有り]
When a plastic bottle with water is placed upside-down with a thin pipe at its head. limit-cycle oscillation call be observed. A simple differential equation can reproduce the properties of this oscillation. In the present study, a three-coupled-o...
Masahiro I. Kohira Nobuyuki Magome Hiroyuki Kitahata Kenichi Yoshikawa
AMERICAN JOURNAL OF PHYSICS 75(10) 893-895 2007年10月 [査読有り]
The oscillatory flow of water draining from an upside-down plastic bottle with a thin pipe attached to its head is studied as an example of a dissipative structure generated under far-from-equilibrium conditions. Mode bifurcation was observed in t...
Akihiro Isomura Nobuyuki Magome Masahiro I. Kohira Kenichi Yoshikawa
CHEMICAL PHYSICS LETTERS 429(1-3) 321-325 2006年9月 [査読有り]
To identify the optimum conditions for the optical trapping of a droplet under microgravity, we theoretically analyzed the efficiency of trapping with counter laser beams. We found that the distance between the two foci is an important parameter f...
所長
プロジェクト