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

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Text this: Hollow carbon spheres with a controllable shell structure