SPECIAL NOTICE
A -- TECHNOLOGY/BUSINESS OPPORTUNITY Computed Axial Lithography (CAL) for 3D Additive Manufacturing
- Notice Date
- 8/20/2018
- Notice Type
- Special Notice
- NAICS
- 238990
— All Other Specialty Trade Contractors
- Contracting Office
- Department of Energy, Lawrence Livermore National Laboratory (DOE Contractor), Industrial Partnerships & Commercialization, 7000 East Avenue, L-795, Livermore, California, 94550
- ZIP Code
- 94550
- Solicitation Number
- FBO375-18
- Archive Date
- 9/21/2018
- Point of Contact
- Connie L Pitcock, Phone: 925-422-1072
- E-Mail Address
-
pitcock1@llnl.gov
(pitcock1@llnl.gov)
- Small Business Set-Aside
- N/A
- Description
- Opportunity : Lawrence Livermore National Laboratory (LLNL), operated by the Lawrence Livermore National Security (LLNS), LLC under contract no. DE-AC52-07NA27344 (Contract 44) with the U.S. Department of Energy (DOE), is offering the opportunity to enter into a collaborative partnership to further development and commercialize its novel technology Computed Axial Lithography (CAL) for 3D Additive Manufacturing. Background : Additive manufacturing (AM) fabrication methods are proliferating rapidly, with photopolymer-based approaches comprising some of the most prominent methods. These stereolithographic techniques provide a useful balance of resolution, build speed, process control, and capital cost (system metrics that typically must be traded off one against another). Resolving the speed limitations, surface roughness (stair-step artifacts), and requirements for support structures would provide the next major steps forward in the progress of these technologies. Description : LLNL has developed a system and method that accomplishes volumetric fabrication by applying computed tomography (CT) techniques in reverse, fabricating structures by exposing a photopolymer resin volume from multiple angles, updating the light field at each angle. The necessary light fields are spatially and/or temporally multiplexed, such that their summed energy dose in a target resin volume crosslinks the resin into a user-defined geometry. These light-fields may be static or dynamic and may be generated by a spatial light modulator (SLM) that controls either the phase or the amplitude of a light field (or both) to provide the necessary intensity distribution. Advantages : LLNL’s approach surpasses recently-reported volumetric aperiodic three-dimensional (3D) structure fabrication using holographic light fields in its geometric flexibility. Similarly, the inherently volume-based approach of the present invention provides an order-of-magnitude improvement in fabrication speed over conventional layer-by-layer "2 1/2D" printing techniques. Finally, the surface roughness problems imposed by layer-by-layer fabrication are substantially reduced if not removed entirely. Past and current use has included improvement to photopolymer-based additive manufacturing: a. Faster part generation b. Improved surface quality, no stair step artifacts from layering c. Reduction of geometric constraints that arise from 2D layer slicing, simplified post-processing Potential Applications : a. AM generated optics with high quality surface finish b. Hollow or overhanging structures c. Large dynamic range mesoscale AM structures d. Printing/fabrication on a previously fabricated 3D structure immersed in the resin e. Processing very soft, flexible or brittle polymers and geometrically delicate/fragile structures (as there is no relative structure/fluid motion during printing). Development Status: LLNL has filed a U.S. Patent Application No. 15/593,947; LLNL internal case number (IL-13182). LLNL is seeking industry partners with a demonstrated ability to bring such inventions to the market. Moving critical technology beyond the Laboratory to the commercial world helps our licensees gain a competitive edge in the marketplace. All licensing activities are conducted under policies relating to the strict nondisclosure of company proprietary information. Please visit the IPO website at https://ipo.llnl.gov/resources for more information on working with LLNL and the industrial partnering and technology transfer process. Note: THIS IS NOT A PROCUREMENT. Companies interested in commercializing LLNL's Computed Axial Lithography (CAL) for 3D Additive Manufacturing should provide a written statement of interest, which includes the following: 1. Company Name and address. 2. The name, address, and telephone number of a point of contact. 3. A description of corporate expertise and facilities relevant to commercializing this technology. Written responses should be directed to: Lawrence Livermore National Laboratory Innovation and Partnerships Office P.O. Box 808, L-795 Livermore, CA 94551-0808 Attention: FBO 375-18 Please provide your written statement within thirty (30) days from the date this announcement is published to ensure consideration of your interest in LLNL's Computed Axial Lithography (CAL) for 3D Additive Manufacturing technology.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/DOE/LLNL/LL/FBO375-18/listing.html)
- Record
- SN05046121-W 20180822/180820231358-7666e2cf1568d3fda27b377228e6a6d6 (fbodaily.com)
- Source
-
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