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Related Experiment Video

Updated: Apr 12, 2026

Reduced-gravity Environment Hardware Demonstrations of a Prototype Miniaturized Flow Cytometer and Companion Microfluidic Mixing Technology

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Electrifying the disk: a modular rotating platform for wireless power and data transmission for Lab on a disk

Jens Höfflin¹, Saraí M Torres Delgado, Fralett Suárez Sandoval

¹Simulation Laboratory, Department of Microsystems Engineering (IMTEK), University of Freiburg, Germany. dario.mager@imtek.uni-freiburg.de dario.mager@kit.edu.

|May 14, 2015

Summary

This study introduces a wireless power transfer system for spinning disks, enabling microcontrollers to operate sensors and actuators without slip rings or batteries. This design enhances flexibility for Lab-on-a-disk applications.

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Area of Science:

Engineering
Microfluidics
Electronics

Background:

Traditional Lab-on-a-disk systems often rely on slip rings or batteries for power, limiting mobility and increasing complexity.
The need for a robust, adaptable, and wireless power solution is critical for advancing integrated microfluidic devices.

Purpose of the Study:

To design and demonstrate a wireless power transfer system for a spinning disk platform.
To integrate a microcontroller and various sensors/actuators powered wirelessly for Lab-on-a-disk applications.
To validate the feasibility of eliminating slip rings and batteries in rotating microfluidic systems.

Main Methods:

Inductively coupled coils were used for wireless power transfer to the spinning disk.
A rectified and stabilized power supply fed an Arduino-compatible microcontroller (μC) on the disk.
Sensors and actuators were connected to the μC via an I2C bus for flexible integration.

Main Results:

Successfully demonstrated wireless power transfer to a spinning disk.
The system powered a microcontroller, sensors, and actuators, showcasing its functionality.
The platform proved adaptable and required minimal physical space, functioning as a straightforward add-on.

Conclusions:

Wireless power transfer offers a feasible and advantageous alternative to traditional power methods for spinning disk systems.
The developed platform enables flexible prototyping for Lab-on-a-disk applications, enhancing experimental freedom.
This approach simplifies system design and integration, paving the way for more advanced microfluidic devices.