▎ 摘 要
NOVELTY - The device has a Nano substrate assembly formed with a Zinc oxide nanometer layer. Graphene quantum point of the Nano substrate assembly is determined. Thickness of the Zinc oxide Nano layer is about 50-300nm. USE - Micro-Nano device. ADVANTAGE - The device is inexpensive, and reduces water resource pollution rate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a micro-Nano device preparation method. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view a micro-Nano device.