C12 Advanced Technologies, LLC
 

 

Thermally fugitive micro-machined LTCC Carbon Tape inserts are highly effective for preventing deformation during lamination.

LTCC Carbon Tapes can be precisely cut and engraved with low power lasers to form complex inserts for microchannels and enclosed cavities.

High Purity, LTCC Carbon Tape


"Thermally fugitive" carbon tapes for fabricating buried cavities, microchannels, and MEM's structures in Low Temperature Co-fired Ceramic (LTCC) multilayer devices and other laminated components

Description


    C12 Advanced Technologies' LTCC Carbon Tapes are thin, flexible tapes made of specially processed, high purity carbon.  LTCC Carbon Tapes are used to form in-situ channels, cavities, and MEMs structures in LTCC laminates and other multilayer components.  LTCC Carbon Tapes are designed to be compatible with all major commercial LTCC tape and screen printable systems.  Our "thermally fugitive" LTCC Carbon Tapes are engineered to burn out cleanly in air atmospheres, and begin to rapidly sublimate at 600 Deg. C as the ceramic matrix sinters, leaving behind well-defined features such as cavities and channels.  LTCC Carbon Tapes create precise, stress-free structures unlike conventional fugitive materials, such as waxes and polymers, which often leave residue and result in stress related distortion.  LTCC Carbon Tapes are also a cost effective alternative to using removable inserts such as platinum or latex to create structural features.  LTCC Carbon Tapes do not smudge, and are easily punched or cut into complex shapes with simple tools or with low-power laser trimmers.

Features:

 

  • Forms in-situ, buried channels, cavities, and MEMs structures in LTCC and other multilayer composites.

 

  • Prevents deformation during high pressure lamination of multilayer structures.

 

  • Prevents slumping during firing.

 

  • Contains high purity carbon which burns out cleanly in air atmospheres – sublimates directly without causing stress on green parts.

 

  • Cost effective substitute for removable inserts (e.g. latex, platinum, etc.)

 

  • Does not require complex lamination and firing cycles that are necessary when using other fugitive materials such as wax or polymeric materials.

 

  • Compatible with all major commercial LTCC tape and screen printable systems.

 

 

Applications include forming buried channels, cavities and ports in:

 

  • Low Temperature Co-fired Ceramics (LTCC).

 

  • Solid Oxide Fuel Cell (SOFC) membranes.

 

  • Ceramic MEM's.

 

  • Microfluidic devices with channels for gasses and fluids.

 

  • Suspended structures, (accelerometers, pumps, flow sensors, etc.)

 

  • Microreactors and microcombustors.

 

  • Laminated Object Manufacturing (LOM) and rapid prototyping.

 

  • Thermally fugitive masking materials.
LTCC laminates showing buried channels (along edges) formed with LTCC Carbon Tapes.
Cross section showing precise channels formed in LTCC substrate with LTCC Carbon Tapes.
Method of embossing channels with LTCC Carbon Tape as described by J. Youngsman, et al., in Ref. 1. (Photo reproduced with permission of International Microelectronics And Packaging Society, Washington DC, CICMT 2005).
X-ray view of channel device with sapphire tubes and lens fabricated with LTCC Carbon Tapes as described by J. Youngsman, et al., in Ref. 1. (Photo reproduced with permission of International Microelectronics And Packaging Society, Washington DC, CICMT 2005).