The recent explosion in technology has led to the development of devices that would have been unfathomable just a few decades ago. Many of these technological advancements are enabled by the miniaturization of electronic components. Microscale devices can be used for a host of applications ranging from portable and implantable medical devices to wireless sensors.
Unfortunately, the development of functional microscale devices has been stalled by difficulties in miniaturizing energy storage to match. The high energy and high power density required for most applications is difficult to achieve in microbatteries due to their size and footprint restrictions. Though scientists have been researching a variety of possible workarounds, few functional microbatteries have been developed; the majority of the existing microbatteries designs simply cannot be manufactured easily.
A team of researchers has now fabricated microbatteries containing microelectromechanical and complementary metal-oxide-seminconductor (CMOS) devices using a futuristic 3D fabrication route. By combining 3D holographic lithography with conventional photolithography, the scientists demonstrated increased control of the electrode structure and spatial arrangement.
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