A paper has been accepted to 'Extreme Mechanics Letters​'.

The title is 'Hybridized generator: freely movable ferromagnetic nanoparticle-embedded balls for a self-powered tilt and direction sensor​' and the authors are Su Thiri San, † Seungju Jo, † Hyeonhee Roh, Nagabandi Jayababu, Inkyum Kim, Youngsu Kim, and Daewon Kim*. 

†These authors equally contributed to this work.