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             ___      _  _     _____    __   _   
  ____      / _ \\   | \| ||  |  ___|| | || | || 
 |    \\   / //\ \\  |  ' ||  | ||__   | '--' || 
 | [] ||  |  ___  || | .  ||  | ||__   | .--. || 
 |  __//  |_||  |_|| |_|\_||  |_____|| |_|| |_|| 
 |_|`-`   `-`   `-`  `-` -`   `-----`  `-`  `-`  
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Text this: Surface damage in a Mn-Zn ferrite induced by laser chemical etching