Patent ID: 11939338
Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 8:
9. The sensitivity-enhanced spiropyran composite according to claim 1, which has a strain sensitivity factor of 0.5-2.5, as calculated by the following Mathematical Formula 1:, strain
      ⁢
         
      sensitivity
      ⁢
         
      factor
     
     =
     
      
       (
       
        Δ
        ⁢
        I
        /
        
         I
         0
        
       
       )
      
      
       ε
       ut
      
     
    
   
   
    
     [
     
      Mathematical
      ⁢
         
      Formula
      ⁢
         
      1
     
     ]
    
   
  
 

wherein I0 represents the initial fluorescence intensity, ΔI represents a change in fluorescence intensity, and εut represents a strain ratio.