A collaborative study between the groups of materials scientist Husam Alshareef at KAUST and medical imaging expert Abdulkader A. Alkenawi at King Saud bin Abdulaziz University for Health Sciences have come up with a way to charge a battery through a permanent implant by using sound waves. The team accomplished this by combining polyvinyl alcohol with nanosheets of MXene, a transition-metal carbide, to create a hydrogel that reacts to ultrasound waves.
The hydrogel generates a current when the pressure of the ultrasound waves forces the flow of electrical ions in the water, filling the hydrogel.
This technology has great future potential for implant devices such as pacemakers, patients won’t need invasive surgery to change batteries. They can simply recharge them wirelessly.