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           _    _     _____    _    _     _____   
  ____    | || | ||  |__  //  | || | ||  /  ___|| 
 |    \\  | || | ||    / //   | || | || | // __   
 | [] ||  | \\_/ ||   / //__  | \\_/ || | \\_\ || 
 |  __//   \____//   /_____||  \____//   \____//  
 |_|`-`     `---`    `-----`    `---`     `---`   
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Text this: Exciton trong Graphene