Journal
JOURNAL OF APPLIED PHYSICS
Volume 117, Issue 17, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4917243
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- JST, PRESTO
- JSPS
- Grants-in-Aid for Scientific Research [15K12511, 14J06583] Funding Source: KAKEN
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In the present study, we describe the fabrication and manipulation of a micro-mirror system similar to the iridophores of neon tetra that allow microstructural light control. Biogenic guanine crystals as micro-mirrors were adhered to a glass substrate with flexible DNA joints under a vertical magnetic field of 480 mT. We then observed the movement of the micro-mirrors under sub-Tesla horizontal magnetic fields. Under ambient fields, the orientation of the guanine micro-mirrors did not change. Appling a horizontal magnetic field of approximately 400mT generated by an electromagnet induced motion and width changes of the guanine micro-mirrors, which were observed by an optical microscope. However, the inclination of the micro-mirrors recovered upon removal of the magnetic field. The developed guanine micro-mirrors on a glass substrate demonstrate the remote control of microstructural diamagnetic materials, and may show promise for use as an underwater microactuator for microfluidic systems. (C) 2015 AIP Publishing LLC.
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