December 5, 2005
      
                  
        
  Author(s)
  Thomas W. LeBrun,   T W. Hwang,   I Y. Park,   Jun-Feng  Song,   Yong-Gu  Lee,   Nicholas G. Dagalakis,   Cedric V. Gagnon,   Arvind K. Balijepalli
 
       
            
    
    
        There are several new tools for manipulating microscopic objects. Among them, optical tweezers (OT) has two distinguishing advantages. Firstly, OT can easily release an object without the need of a complicated detaching scheme. Secondly, it is anticipated