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Near Filed Ultrasonic Holography

Holography features includes:

Nondestructive Defect Review in 3D interconnects, thin films, devices, ceramics, MEMS, Optoelectronics etc..

  • Possess nanometer-scale resolution
  • Enable subsurface imaging w/o cross-sectioning
  • Cracks identification due to stress migration as a result of electrical and thermal stressing

Nondestructive Inspection for Emerging Nanotechnology

  • Enable imaging of electro-mechanical defects (e.g. nanotube contacts)
  • Enable imaging of nanoscale integrity in molecular assemblies
  • Subsurface defect review and imaging in ferroelectrics, nanoparticles, interfacial, micro cracks and bulk defects

Nondestructive Defect Review and Process Control in Conventional IC materials and structures

Near-field acoustic amplitude depends only on surface modulus and surface mechanical defects
Near-field acoustic phase corresponds to surface + subsurface variations in polymer mechanical uniformity in addition to time-of-flight delay of acoustic wave

Projected Performance Gains

  • Nanostructural Metrology
    -- Mechanical imaging of molecular interconnects: Comparative modulus resolution ~ < 0.5%
    -- Mechanical imaging of molecular interconnects: Absolute modulus resolution ~ < 5%
  • In-Line 3D Nanomechanical Imaging
    -- nondestructive surface/ subsurface defect identification
    -- XY resolution: < 1nm
    -- Z resolution < 10 nm (defect size)