Silver microcoil is fabricated through a biotemplating process combined with electroless plating. Spiral vessels in Lotus root are employed as a biotemplate because of their left-handed coil structure. The silver microcoil exhibits a solenoidal microcoil showing self-inductance in the level of picohenry, which could be applied for electromagnetic-responsive materials in the high-frequency region such as millimeter waves or terahertz waves.

No abstract

Spiral vessels extracted from plant tissues can be utilized as a biotemplate for the production of left-handed metal microcoils with approximately 50-µm coil diameter. The silver microcoil functions as a solenoid with small self-inductance ranging to the picohenry level. As reported by Kaori Kamata and co-workers, this method provides an environmentally conscious and cheap route to develop electromagnetic-responsive materials such as microantenna targeting the high-frequency region.