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Optomec Awarded AFRL Contract to Enhance Aerosol Jet Technology for Large Area Printing of Carbon Nanotube Based TFTs

Optomec announced today that the company was awarded a contract by the Air Force Research Lab (AFRL) to advance its Aerosol Jet technology for printed electronics. Under the contract Optomec will enhance its Aerosol Jet technology to enable large area printing of high performance Carbon Nanotube (CNT) based Thin Film Transistors (TFTs) thereby expanding the application space for flexible electronics.

The main challenge limiting high volume flexible electronic applications is the lack of a room temperature, large area printing process for producing high performance TFTs and circuits on plastic substrates. Enhancements to Aerosol Jet Printing technology developed under this contract will address these limitations allowing an expanded range of new products such as large area conformal sensor arrays, programmable drug-delivery patches, and roll-up displays. Many of these applications will be of vital importance to the US military and will also have significant commercial potential.

Optomec Aerosol Jet Printers are used to directly print functional electronic circuitry and components onto low-temperature, non-planar substrates, without the need for masks, screens, or plating. The Aerosol Jet process utilizes an innovative aerodynamic focusing technique to collimate a dense mist of material-laden micro droplets into a tightly controlled beam to print features as small as 10 microns or as large as several millimeters in a single pass. For more information on Aerosol Jet printing, click here.

A number of Aerosol Jet system enhancements will be engineered under this contract including advanced ultrasonic atomization technology, new in-situ curing methods for sintering on low temperature substrates, and new process controls enabling sequential printing of 4 different materials with a single print job set-up. TFTs are made up of 4 layers each of which requires a different material. The enhanced Aerosol Jet printer will be equipped with 4 atomizers each containing a unique material and new software process controls to automatically switch between materials for printing each layer. In addition, each layer will be cured before the next layer is printed, all under software control. Professor Dan Frisbie, who serves as the Director of Graduate Studies for Materials Science and Engineering at the University of Minnesota (UMN), is supporting the project with materials development and device design and testing.

Optomec is a privately-held, rapidly growing supplier of Additive Manufacturing systems. Optomec’s patented Aerosol Jet Systems for printed electronics and LENS 3D Printers for metal components are used by industry to reduce product cost and improve performance. Together, these unique printing solutions work with the broadest spectrum of functional materials, ranging from electronic inks to structural metals and even biological matter. Optomec has more than 150 marquee customers around the world, targeting production applications in the Electronics, Energy, Life Sciences and Aerospace industries.

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