A 200 um by 100 um Smart Dust System with an Average Current Consumption of 1.3 nA

Dominic Funke, Pierre Mayr, Lukas Straczek, John S. McCaskill, Jürgen Oehm, Nils Pohl

23rd IEEE International Conference on Electronics, Circuits and Systems (ICECS), Monte Carlo, Monaco, Dec 11-14 2016


In this paper we present a microscale ”Smart Dust” type system with a volume of 200 µm x 100 µm x 10 µm, called lablet. The lablet contains a 20Hz low power clock generator, a sensor, electric actuators and a simple finite state machine to implement a predefined response to the sensor input. The system operates with supply voltages ranging from 0.3V to 1.8V and is thus suitable to be supplied from a capacitor with decreasing voltage. An input rectifier allows powering the lablet independent of polarity. The average current consumption of the system was measured to be 1.3 nA when supplied from a capacitor with an initial voltage of 1.8V. The system is intended to be used within electrolyte solutions. The small system scale allows the investigation of ”pourable electronics”, a concept where large quantities of microsystems are deployed within a chemical solution to perform a predefined task. Several lablets have been designed and fabricated in a standard 180 nm CMOS process and the electrical functionality has been verified by contacting the lablet electrodes with multiple probe needles. © 2016 IEEE http://ieeexplore.ieee.org/document/7841251/