Modular electronic microrobots with on board sensor-program steered locomotion
Vineeth K. Bandari, Yeji Lee, Pranathi Adluri, Daniil Karnaushenko, Dmitriy D.Karnaushenko, John S. McCaskill, Oliver G. Schmidt

TL;DR
This paper introduces modular microrobots with onboard sensors and control, capable of autonomous 2D navigation and docking on surfaces, powered by ambient light and fabricated using innovative high-density integration techniques.
Contribution
It demonstrates the first integration of onboard control and sensing in microrobots, enabling autonomous navigation and docking using novel fabrication methods.
Findings
Microrobots can navigate on wet surfaces using onboard sensors.
High-density integration enables multiple functionalities within 1mm scale.
Robots can dock with other modules via patterned surfaces.
Abstract
True microrobots, in contrast with externally controlled microparticles, must harvest or carry their own source of energy, as well as their own (preferably programmable) microcontroller of actuators for locomotion, using information acquired from their own sensors. Building on recent published work [1], we demonstrate here, for the first time, that microrobotic smartlets, hitherto buoyancy divers, can also be equipped to navigate in 2D on surfaces, with on-board control responding to both sensor information and their internal electronic program. Fabricating modular microrobots, with all dimensions of 1mm and below, has been difficult to achieve because of competing demands for the limited surface area and the challenges of integrating and interconnecting the diverse functionalities of energy harvesting, actuation, sensing, communication, docking and control. A novel high density…
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