Text this: Nanostructured single-crystalline twin disks of zinc oxide

 _    _    _    _               ______    _____   
| \  / || | || | ||   ____     /_   _//  / ____|| 
|  \/  || | || | ||  |    \\    -| ||-  / //---`' 
| .  . || | \\_/ ||  | [] ||    _| ||_  \ \\___   
|_|\/|_||  \____//   |  __//   /_____//  \_____|| 
`-`  `-`    `---`    |_|`-`    `-----`    `----`  
                     `-`