| 摘要 |
A printing apparatus configured to print a material profile onto a substrate is provided. The printing apparatus includes a container, a nozzle, a positive displacement mechanism, and one or more regulators. The container is adapted to hold a precursor material. The container has a first end and a second end, with the nozzle connected to the first end of the container. The nozzle has an orifice configured to deposit the precursor material over the substrate. The positive displacement mechanism is configured to push the precursor material through the orifice of the nozzle over the substrate. The regulator is configured to deposit the precursor material in accordance with pre-determined parameters governing width and cross-sectional area of the precursor material deposited over the substrate, such that the precursor material deposited over the substrate has a pre-determined width and a pre-determined cross-sectional area.
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