<< A bristle-bot or vibrobot is a multi-legged robot made of bristles and an oscillating actuator that generates vibrations. This work presents the first demonstration of a micro-bristle-bot, with 3D-printed legs, fabricated by two-photon polymerization lithography. The presented miniaturized bristle-bot has a weight of only 5 mg, in the size of 2 mm × 1.87 mm × 0.8 mm, and can achieve a speed up to 4 times the body length per second. >>
<< The presented micro-bristle-bots show a resonant frequency around 6.3 kHz, which can be tailored based on their geometry. This feature allows for addressing individual micro-bristle-bots with various geometries based on their unique resonance frequency. >>
DeaGyu Kim, Zhijian Hao, et al. A 5mg micro-bristle-bot fabricated by two-photon lithography. Journal of Micromechanics and Microengineering. Jul 9, 2019.
https://iopscience.iop.org/article/10.1088/1361-6439/ab309b
John Toon. Tiny vibration-powered robots the size of the world's smallest ant. Georgia Institute of Technology. Jul 17, 2019.
https://m.techxplore.com/news/2019-07-tiny-vibration-powered-robots-size-world.html
