January 1, 2005
      
                  
        
  Author(s)
  Elizabeth A. Wilder,   Shu  Guo,   Martin  Chiang,   Christopher  Stafford
 
       
            
    
    
        A metrology for rapidly measuring the modulus of ultra-soft polymer networks has been developed. The method utilizes compression-induced buckling of a sensor film that is applied to the surface of the specimen, where the modulus-dependent buckling