Micro channel particle deposition (MPD) is a thick-film micro fabrication process where a polymeric stamp is used to transfer ink onto a substrate. MPD requires three components: a substrate, a stamp and an ink.
The substrate is loaded by an automated wafer handling system onto a wafer chuck in the tool.
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The stamp is aligned and accurately placed by the tool on the substrate. The stamp and substrate are in direct contact and seal through adhesive forces.
The ink (printing material) is injected from the top into the stamp and flows through a network of channels into the microchannels that are contained in the stamp and get filled.
Once the microchannels are completely filled, the ink is cured by removing the solvent while the stamp is still in contact with the substrate. Thereby, the printed structures become solidified.
Once the ink is cured, the stamp is gently peeled-off by the tool to make sure the printed features remain freestanding on the substrate.
Once the stamp is removed, the substrate is sintered at elevated temperature, to remove any binders/polymers and to give the printed material its desired properties (e.g. conductivity, porosity).
Micro channel particle deposition (MPD) is a thick-film micro fabrication process where a polymeric stamp is used to transfer ink onto a substrate. MPD requires three components: a substrate, a stamp and an ink.
Width: 2.5 – 500 um
Aspect ratio: 1 – 5
Minimum spacing: 5 – 500 um
The MPD printing process consists of three main components: a substrate, a polymeric stamp and an ink. These components are loaded into a dedicated and in-house developed MPD tool that cycles thought the various process:
These printing materials are commonly used in the MPD process.
The materials in powder form are formulated into an ink that is compatible with the MPD printing process.
The MPD process allows for simultaneously printing with up to four different printing materials in a single process step. In other words, once the stamp is in contact with the substrate four different inks can be injected into the stamp and thereby allow to print with four different materials in one go.
Want to use a different printing material?
Please reach out so we can verify if the MPD process is compatible with your material.
