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  ______    _____      _____     ___    __    __  
 /_   _//  |  ___||   / ___//   / _ \\  \ \\ / // 
 `-| |,-   | ||__     \___ \\  / //\ \\  \ \/ //  
   | ||    | ||__     /    // |  ___  ||  \  //   
   |_||    |_____||  /____//  |_||  |_||   \//    
   `-`'    `-----`  `-----`   `-`   `-`     `

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Text this: Bandgap engineering of zigzag graphene nanoribbons by manipulating edge states via defective boundaries