TY - JOUR
T1 - Micro-magnetic Rotational Wings in an Alternating Magnetic Field
AU - Miki, Norihisa
AU - Shimoyama, Isao
PY - 2001
Y1 - 2001
N2 - Magnetic rotational wings that rotate in an alternating magnetic field were fabricated and analyzed. The rotational wings are composed of the rectangular-shaped magnetic wings and a thin rod in the center that acts as the axis of rotation. When the alternating magnetic field and the initial rotation are applied, the rotational wings keep on rotating at the same frequency as the magnetic field. The magnetization of the wings, the magnetic torque exerted on the wings and the resistance of the air are calculated and the rotation of the wings is simulated. When the thrust generated by the wings overcomes the weight of their own, the wings take off along the guide. The 165-mg 0,9-mm-long micro-rotational wings fabricated by micromachine technology succeeded in taking off at 570 Hz. The non-dimensional number Crw was introduced to represent the characteristics of the rotational wings. Crw increases, as the wing length decreases. Crw of around 1 mm long rotational wings was estimated to be 2.
AB - Magnetic rotational wings that rotate in an alternating magnetic field were fabricated and analyzed. The rotational wings are composed of the rectangular-shaped magnetic wings and a thin rod in the center that acts as the axis of rotation. When the alternating magnetic field and the initial rotation are applied, the rotational wings keep on rotating at the same frequency as the magnetic field. The magnetization of the wings, the magnetic torque exerted on the wings and the resistance of the air are calculated and the rotation of the wings is simulated. When the thrust generated by the wings overcomes the weight of their own, the wings take off along the guide. The 165-mg 0,9-mm-long micro-rotational wings fabricated by micromachine technology succeeded in taking off at 570 Hz. The non-dimensional number Crw was introduced to represent the characteristics of the rotational wings. Crw increases, as the wing length decreases. Crw of around 1 mm long rotational wings was estimated to be 2.
KW - alternating magnetic field
KW - magnetic actuation
KW - magnetic anisotropic torque
KW - micro-flight
KW - micromachine
KW - rotational wings
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U2 - 10.1541/ieejsmas.121.221
DO - 10.1541/ieejsmas.121.221
M3 - Article
AN - SCOPUS:85024438591
VL - 121
SP - 221
EP - 229
JO - IEEJ Transactions on Sensors and Micromachines
JF - IEEJ Transactions on Sensors and Micromachines
SN - 1341-8939
IS - 4
ER -