Rotary-actuated folding polyhedrons for midwater investigation of delicate marine organisms
Autor: | Chuck Hoberman, James C. Weaver, Zhi Ern Teoh, Kaitlyn P. Becker, Brennan T. Phillips, Griffin Whittredge, David F. Gruber, Robert J. Wood |
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Rok vydání: | 2018 |
Předmět: |
0301 basic medicine
Microelectromechanical systems Control and Optimization business.industry Mechanical Engineering Ranging 02 engineering and technology Rotary actuator Design strategy 021001 nanoscience & nanotechnology Computer Science Applications 03 medical and health sciences Polyhedron Dodecahedron Remote operation 030104 developmental biology Artificial Intelligence Aerospace engineering Underwater 0210 nano-technology business |
Zdroj: | Science robotics. 3(20) |
ISSN: | 2470-9476 |
Popis: | Self-folding polyhedra have emerged as a viable design strategy for a wide range of applications, with advances largely made through modeling and experimentation at the micro- and millimeter scale. Translating these concepts to larger scales for practical purposes is an obvious next step; however, the size, weight, and method of actuation present a new set of problems to overcome. We have developed large-scale folding polyhedra to rapidly and noninvasively enclose marine organisms in the water column. The design is based on an axisymmetric dodecahedron net that is folded by an external assembly linkage. Requiring only a single rotary actuator to fold, the device is suited for remote operation onboard underwater vehicles and has been field-tested to encapsulate a variety of delicate deep-sea organisms. Our work validates the use of self-folding polyhedra for marine biological applications that require minimal actuation to achieve complex motion. The device was tested to 700 m, but the system was designed to withstand full ocean depth (11 km) pressures. We envision broader terrestrial applications of rotary-actuated folding polyhedra, ranging from large-scale deployable habitats and satellite solar arrays to small-scale functional origami microelectromechanical systems. |
Databáze: | OpenAIRE |
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