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

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Text this: Multicolor x-rays from free electron-driven van der Waals heterostructures