Describir: Microscopic spheroidal particles obtained by laser cutting

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