Advanced Manufacturing is the use of innovative technologies to create new or existing products. Lawrence Livermore National Laboratory’s advanced manufacturing portfolio can be organized into four main groups: Additive Manufacturing is the process of joining materials to make objects from 3D model data, usually layer upon layer, as opposed to subtractive manufacturing methodologies. Precision Engineering is the design and fabrication of machines, fixtures, and other structure that have exceptionally low tolerances, are repeatable, and are stable over time. Manufacturing Simulation & Automation comprises technologies that reduce human intervention in manufacturing processes, as well as a set of tools that allows for experimentation and validation of product, process, and system designs & configurations. Manufacturing Improvements are inventions that improve throughput/efficiency, or that reduce cost/waste.
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R&D World Magazine recently announced their 2022 award winners. LLNL researchers received three awards, which include Tailored Glass by Direct Ink Writing, novel compression gratings that enable a new class of high-energy laser systems and a 3D printing feedstock known as Energy Inks that can print a functioning battery.
Lawrence Livermore National Laboratory is partnering with Ampcera Inc. to develop solvent-free Laser Powder Bed Fusion additive manufacturing technologies for the fabrication of 3D-structured lithium battery cathodes, that could result in faster charging and higher-energy-density batteries.
The Department of Energy’s Technology Transfer Working Group recently awarded two Lawrence Livermore National Laboratory (LLNL) employees with “Best in Class” awards during their May spring meeting in Washington, D.C.
LLNL is seeking industry partners to collaborate on quantum science and technology research and development in the following areas: quantum-coherent device physics, quantum materials, quantum–classical interfaces, computing and simulation, and sensing and detection.
LLNL pioneered the use of tomographic reconstruction to determine the power density of electron beams using profiles of the beam taken at a number of angles. LLNL’s earlier diagnostic consisted of a fixed number of radially oriented sensor slits and required the beam to be circled over them at a fixed known diameter to collect data. The new sensor design incorporates annular slits instead,…
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…
LLNL researchers have designed and tested performance characteristics for a multichannel pyrometer that works in the NIR from 1200 to 2000 nm. A single datapoint without averaging can be acquired in 14 microseconds (sampling rate of 70,000/s). In conjunction with a diamond anvil cell, the system still works down to about 830K.
LLNL has solved the challenges of depth-resolved parallel TPL by using a temporal focusing technique in addition to the spatial focusing technique used in serial writing systems. We temporally focus the beam (through optical set-up design) so that a sharp Z-plane can be resolved while projecting 2D “light sheets” that cause localized photo-polymerization. This enables printing of complex 3D…
The LLNL method for optimizing as built optical designs uses insights from perturbed optical system theory and reformulates perturbation of optical performance in terms of double Zernikes, which can be calculated analytically rather than by tracing thousands of rays. A new theory of compensation is enabled by the use of double Zernikes which allows the performance degradation of a perturbed…
LLNL has developed an optically clear iodine-doped resist that increases the mean atomic number of the part. AM parts fabricated with this resist appear radio-opaque due to an increase in the X-ray attenuation by a factor of 10 to 20 times. Optical clarity is required so that the photons can penetrate the liquid to initiate polymerization and radio opacity is required to enable 3D computed…
By combining 3D printing and dealloying., researchers at LLNL have developed a method for fabricating metal foams with engineered hierarchical architectures consisting of pores at least 3 distinct length scales. LLNL’s method uses direct ink writing (DIW), a 3D printing technique for additive manufacturing to fabricate hierarchical nanoporous metal foams with deterministically controlled 3D…
LLNL researchers have developed a high-speed, tightly-packed array of micro-mirrors capable of rapidly (>40 kHz) directing light over large angles (>10°) in two axes-tip and tilt-with continuous closed-loop motion control.
LLNL's TTP micro-mirror array design contains a number of unique features that enable its high performance. These features are generated from the application…
LLNL scientists have developed a new metal additive manufacturing technique that uses diode lasers in conjunction with a programmable mask to generate 2D patterns of energy at the powder surface. The method can produce entire layers in a single laser shot, rather than producing layers spot by spot as is currently done in powder bed fusion methods.
