In a groundbreaking discovery at Flinders University in South Australia, researchers have successfully synthesized a variety of gold nanoparticles through the manipulation of water flow in a vortex fluidic device. This innovative approach eliminates the need for toxic chemicals, highlighting a significant advancement in green chemistry. The study also revealed a contact electrification reaction within the device, leading to the production of hydrogen and hydrogen peroxide. Collaborating with scientists from Australia and overseas, the team explored the size and shape variations of gold nanoparticles based on different processing parameters. PhD candidate Badriah Alotaibi, who spearheaded the research, emphasized the novel phenomenon observed in the VFD and its potential applications in various reactions. The method developed allows for the creation of pure gold nanoparticles in water, minimizing waste and offering a sustainable alternative to traditional synthesis methods. Professor Colin Raston, the inventor of the vortex fluidic device, highlighted its versatility in designing nanoparticles for specific applications like drug delivery and electronics. The environmentally friendly nature of this approach, coupled with the scalability and efficiency of the process, signifies a significant step forward in nanotechnology and sustainable materials synthesis.