2010 Fiscal Year Final Research Report
An Impulsive Force Generator as a Micro size Transportable Device
| Project/Area Number |
21860043
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Intelligent mechanics/Mechanical systems
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| Research Institution | Nagoya Institute of Technology |
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Principal Investigator |
YAMADA Atsushi Nagoya Institute of Technology, 大学院・工学研究科, 特任研究員 (40534334)
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| Project Period (FY) |
2009 – 2010
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| Keywords | マイクロマシン / 知能機械 / 知能ロボット / 飛び移り座屈 / インパルス力 |
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| Research Abstract |
We have developed minimum micro-scale impulsive force generator (microcatapult) utilizing snap-through buckling of an elastic material. It is the first successful example to store the elastic energy and release it as kinematic energy by using a rotary motion of protein. The device consists of motor protein (F_1-ATPase) immobilized on a coverslip and actin bundle coated with microbeads as an elastic material. It has a closed loop structure of the actin bundle with the length of about 10μm. One end of the actin bundle is fixed with F_1-ATPase through a magnetic bead as an active rotary joint, and the other end of the actin bundle is fixed on the coverslip through a terminal microbead as a passive rotary joint. Using this device, elastic energy stored in the actin bundle mainly by bending deformation of it can be obtained as impulsive force utilizing snap-through buckling generated by the driving torque of F_1-ATPase with added ATP and an external magnetic field torque. As a result, this is the first success example to convert a rotary motion of protein into different motion mode (snap-through buckling). The acceleration generated by the proposed micro-catapult reached more than 120μm^2/S under a solution and dozens of repeated snap-through buckling could be obtained for one the assembled devices.
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