Patent ID: 11874203
Assignee: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A nano printing device comprising:
a nanopipette which includes a pipette body having a discharge hole formed in one end portion thereof and configured to contain a liquid solution, and a plating layer formed on an outer surface of the pipette body;
a substrate having a metal layer and on which nanostructures formed from the liquid solution discharged from the nanopipette are placed;
a first power supply unit configured to apply heat to the nanopipette, wherein the first power supply unit electrically connects the liquid solution of the pipette body and the plating layer;
a second power supply unit configured to reduce a surface tension of the liquid solution at the discharge hole, wherein the second power supply unit electrically connects the plating layer and the metal layer; and
a quartz tuning fork provided to be in contact with the nanopipette,
wherein the quartz tuning fork is configured to detect a phase and an amplitude generated at the end of the nanopipette,
wherein the phase and amplitude satisfy the following equations:, k
      int
    
    =
    
      
        
          F
          A
        
        ⁢
        sin
        ⁢
        
          
        
        ⁢
        θ
      
      +
      
        m
        ⁢
        
          
        
        ⁢
        
          ω
          2
        
      
      -
      k
    
  

  
    
      b
      int
    
    =
    
      
        
          F
          
            A
            ⁢
            
              
            
            ⁢
            ω
          
        
        ⁢
        cos
        ⁢
        
          
        
        ⁢
        θ
      
      -
      b
    
  

  
    
      F
      k
    
    =
    
      
        k
        int
      
      ⁢
      A
    
  

  
    
      F
      b
    
    =
    
      
        b
        int
      
      ⁢
      ω
      ⁢
      
        
      
      ⁢
      A
    
  

  
    
      E
      dis
    
    -
    
      
        
          π
          ⁢
          
            
          
          ⁢
          
            kA
            0
            2
          
        
        Q
      
      ⁡
      
        [
        
          
            
              A
              
                A
                0
              
            
            ⁢
            cos
            ⁢
            
              
            
            ⁢
            θ
          
          -
          
            
              ω
              
                ω
                0
              
            
            ⁢
            
              (
              
                A
                
                  A
                  0
                
              
              )
            
          
        
        ]
      
    
  

wherein, kint denotes an elastic coefficient, bint denotes a viscosity coefficient, Fk denotes an elastic force, Fb denotes a viscous force, Edis denotes an energy dissipation, and Q denotes a quality factor.