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

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Text this: Flexible three-dimensional anticounterfeiting plasmonic security labels : utilizing z-axis-dependent SERS readouts to encode multilayered molecular information