A deposition head for depositing a material on a target, the deposition head comprising: The mass throughput is preferably controlled by an aerosol carrier gas mass flow controller.
The sheath gas combines with the aerosol carrier gas in combination chamber of the deposition head. In such a design, auxiliary focusing of an aerosol stream is accomplished by developing multiple sheath flows that enter into a capillary array.
The use of a tandem configuration increases the range of depositable linewidths for a given capillary diameter. Structures can be printed on nearly any surface geometry by manipulating the tilt and rotation of the print head Overhangs and closed cells can be printed directly, without using sacrificial support structures Co-deposition of electronic and support materials can be used for fabricating 3D circuits Composite materials can be printed, which enables tailoring of the mechanical and electrical properties of the 3D structures.
Thus the diameter or width of the miniature deposition head is preferably approximately 1 cm, but could be smaller or larger. The annular flow developed in the M3D application is generally capable of depositing aerosolized materials with a linewidth of approximately one-tenth the size of the capillary exit orifice.
Using aerosol jet printing technology, NASA hopes to print smaller and more uniquely shaped detector assemblies in a faster and more efficient way.
Miniaturization also facilitates the fabrication and operation of arrayed deposition heads, enabling construction and operation of arrays of aerosol jets capable of independent motion and deposition.
However, in an alternative embodiment, the capillaries can be tapered, resulting in each successive capillary having a smaller diameter than the previous capillary.
An example of one such configuration is a Multi-Nozzle Array, which is an array of two or more capillaries used to simultaneously print parallel lines onto a substrate.
The use of multiple deposition heads for direct printing applications may be facilitated by using miniaturized deposition heads to increase the number of nozzles per unit area.
In this configuration, the sheath gas enters the plenum chamber from ports located on the side of the chamber, and flows upward to the sheath gas channels The primary sheath focuses the flow and is then injected into primary capillary The apparatus of claim 1 wherein an orifice diameter of each said exit capillary is between approximately 50 microns and approximately one millimeter.
In the M3D application, the annular flow is injected into a ceramic capillary.
The diameter of the emerging stream and therefore the linewidth of the deposit is controlled by the exit orifice size, the ratio of sheath gas flow rate to carrier gas flow rate, and the distance between the orifice and the target.
The entire disclosures of all references, applications, patents, and publications cited above are hereby incorporated by reference. The apparatus preferably further comprises an atomizer comprising a cylindrical chamber for holding the material, a thin polymer film disposed on the bottom of the chamber, an ultrasonic bath for receiving the chamber and directing ultrasonic energy up through the film, a carrier tube for introducing carrier gas into the chamber, and one or more pickup tubes for delivering the aerosol to the plurality of channels.
The MSSC configuration provides a secondary sheath gas layer that limits, or in some cases, entirely prevents such impaction of droplets.
An object of the present invention is to provide a miniature deposition head for depositing materials on a target. Provisional Patent Application Ser. A Dual Sheath Single Capillary configuration provides secondary focusing of an annular flow distribution comprised of an aerosol and primary sheath flow, but does not introduced the combined flows into a second capillary.
The orifice diameter of the first capillary is preferably the same as the orifice diameter of the second capillary. The apparatus of claim 6 further comprising an exhaust valve or a vacuum manifold for preventing a flow of the aerosol from passing through said exit capillary.Optomec Aerosol Jet technology is a high volume printing solution for the production of 3D antennas and 3D sensors that are tightly integrated with an underlying product ranging from Smartphones to Industrial Components.
Aerosol Jet systems print fine-feature electronic, structural and biological patterns -such as 3D conformal sensors and antennas for aerospace, defense, consumer electronics, wearables and the Internet of Things (IoT) – on to almost any substrate.
printed with Optomec direct-write aerosol jetting R The printed QR codes are invisible under ambient lighting conditions, but are readable using a near-IR laser, and were successfully. The aerosol jetting technique is a bit different than your everyday FDM printer.
Although it does build components layer by layer, the process works by using a carrier gas and printer head, which.
You can find out more about Optomec and their Aerosol Jet Technology here, and if you’d like to read more of the white paper discussing the aerosol based direct-write micro-additive fabrication.
You can find out more about Optomec and their Aerosol Jet Technology here, and if you’d like to read more of the white paper discussing the aerosol based direct-write micro-additive fabrication.Download