She vocally ordered the board to float at exactly twenty centimeters from the ground, and it obeyed; Victoria stepped on it with caution, her feet apart for better equilibrium, making it slide ever so slightly from left to right with light impulses of her ankles.
She muttered something to herself in Ancient Greek (which meant 'the balance is good') before stepping back down.
"I've gotta say, I had to use a little trick in order to coat the batteries with graphene," she smirked to Jason. "Metallic oxides carry negative loads on their surface, just like graph oxides. Therefore, both were pushing each other off. I had to somehow turn around the loads on the metallic oxide particles first. That succeeded by adding a substance, which committed itself to the particles and produced a new, positively charged surface. Then, I added the graph oxide. It coated the particles completely, because both attracted each other now, thanks to the loading of their surface."
She leaned against a shelf, next to her favorite microscope. She had altered it with an USB-connection and an image-editing software, among else.
"In the end, I transformed the graph oxide by thermal treatment back into graphene (it could have functioned also by chemical reduction, but eh). The result was a hybrid material made out of an anorganic oxide with a stabilizing, but not totally closed organic cover."
Victoria smirked and took the edge of the magnetic board in her hand.
"I'd like to try it out now. Wanna come with me?" she asked. "You can try too, if you wish, but you'll have to take my shoes. Wait, what is your shoe size?"