Text this: Coherent structures over riblets in turbulent boundary layer studied by combining time-resolved particle image velocimetry (TRPIV), proper orthogonal decomposition (POD), and finite-time Lyapunov exponent (FTLE)

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