Transferring nanoelectronics by using water
DOI: 10.1063/PT.5.024308
New Scientist : To get complicated nanostructures on a silicon chip it is sometimes necessary to grow them in separate layers and then transfer these one by one onto the final chip (PDF) to build them into working components.Often it takes strong chemicals to separate the layers from the surface on which they are grown, and high temperatures may be needed to activate the thermal adhesives that keep the components in place at their destination.Grégory Schneider and Cees Dekker at the Kavli Institute of Nanoscience in Delft, the Netherlands, have found a way to use water to quickly and easily transfer layers from one surface to another. They exploit the fact that different materials have different hydrophilicity—the tendency to attract water through transient hydrogen bonds.
