Researchers from North Carolina State University have developed a new technique for creating simple electronic device components that proved effective in recent tests. The results show that self-assembly for more complicated electronics, like 3D computer chips, could be possible.<\/p>\n
The findings are published in Materials Horizons<\/em> and supported by the U.S. National Science Foundation Center for Complex Particle Systems. The technique exhibits a relatively \u201cpassive\u201d creation process compared to current industry methods, eliminating the need for high-cost robotic or manual labor.<\/p>\n The method explores arrays of transistors and diodes for now but could be used to fabricate more complex structures, such as 3D chips, in the future.<\/p>\n Martin Thuo is a professor of materials science and engineering at North Carolina State University and an author of the study. Says Thuo, \u201cExisting chip manufacturing techniques involve many steps and rely on extremely complex technologies, making the process costly and time-consuming. Our self-assembling approach is significantly faster and less expensive.\u201d<\/p>\n \u201cWhat’s more, current manufacturing techniques have low yield, meaning they produce a relatively large number of faulty chips that can’t be used,\u201d adds Thuo. \u201cOur approach is high yield \u2014 meaning you get more consistent production of arrays and less waste.\u201d<\/p>\n Using this approach, the experiment runs a solution of carbon and oxygen \u201cligands\u201d pulled through liquid metal particles. These flow into a preset mold \u2014 think of it like nanotech \u201cJell-O mixture\u201d or \u201ccupcake batter\u201d setting into molds to be \u201cbaked.\u201d Only, in their case, they become end-products like diodes and transistors.<\/p>\n Before heating this solution, the ligands capture ions from the liquid metal before flowing into the mold. These grow into intricate 3D structures or arrays, while any liquid matter naturally evaporates away during this process.<\/p>\n Finally, the array is heated and transformed into all-new structures. These consist of mixed-metal oxides and carbon atoms, self-arranged to become new diodes, transistors or other electronic parts.<\/p>\n <\/p>\n