Describir: Microscopic spheroidal particles obtained by laser cutting

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