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X-ray flood exposure w/o mask (PMMA): View
Process Hierarchy
Bonding
Clean
Consulting
Deposition
Doping
Etch
LIGA
Lift off
Lithography
Mask making
Metrology
Miscellaneous
Packaging
Polishing
Process technologies
Thermal
Unique capabilities

If you are interested in this process, either by itself or as part of a longer processing sequence, please send us email at engineering@mems-exchange.org or call us at (703) 262-5368

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X-ray flood exposure w/o mask (PMMA)
Field geometry
Shape of field with dimensions characterized by the maximum field size
square
Focal depth
Depth of focus of a single objective at a single setting (include objective)
1000 µm
Material PMMA
Max field size 60 mm
Min feature size 5 µm
Sides processed either
Wafer size
Wafer size
Equipment X-ray beam line
Equipment characteristics:
Wafer geometry
Types of wafers this equipment can accept
no-flat, 1-flat, 2-flat, notched
Wafer holder
Device that holds the wafers during processing.
stainless steel
Wafer materials
List of wafer materials this tool can accept (not list of all materials, just the wafer itself).
glass (category), metal (category), Pyrex (Corning 7740), quartz (single crystal), silicon
Wafer thickness
List or range of wafer thicknesses the tool can accept
500 .. 1000 µm
Comments:
  • Bottom dose: 3.5 kJ/cc, ratio<4.
    Scan velocity: 5-50 mm/s.