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Advantages of CNT Emitter X-ray tubes

Structural comparison of thermionic and field emission x-ray tubes

Advantages of CNT-baded field emission x-ray tubes

  • Operation by voltage modulation
  • Do no need warning-up of emitters by heating
  • Digital operation by plusing a gate voltage
  • Minimize x-ray dose to patients
  • Minimize motion blur by pulse operation (high resolution)

CNT material

Images of thin multi-walled carbon nanotubes

properties of t-MWCCNTs

  • Length : 10㎛
  • Avg. diameter : ~ 7㎚
  • Avg. number of layers : ~ 5

TGA

Raman spectrum

Dot patterned CNT emitter

  • Dot diameter : 300㎛
  • Number of dots : 133
  • Effective area : 0.094㎠