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Expediting the Process of TET Meshing Highly Complex Solid Geometry for FEA

Meshing solid geometry with tetrahedral elements is a quick way of creating finite element models, but is not without its challenges. In some cases, solid geometry cannot be successfully meshed by the most advanced tetrahedral mesher. In many other cases, a tetrahedral mesh is produced, but is composed of poorly distorted elements that are inadequate for finite element analysis.

Posted in: On-Demand Webinars

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Compact UV Lasers Could ID Substances from a Distance

For soldiers in the field, the ability to identify an object or substance based on how it responds to light could mean the difference between life and death. They could, for example, determine from a safe distance if an approaching person or vehicle is carrying an explosive device or dangerous biological agent.

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Designing for the DMLS Process

Direct Metal Laser Sintering is an emerging additive manufacturing technology that has great potential to change the way parts are manufactured.

Posted in: Tech Talks

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Plastic Diffractive Optical Elements

If diffractive optical elements are used at low and medium laser power, then plastic elements may be sufficient instead of using fused silica elements. Laser Components (Bedford, NH) offers Holo/ORs plastic DOEs in different materials: polycarbonate, PMMA, Zeonex, and Zoner. They are produced in large quantities using an injection molding process. Plastic DOEs are used in particular in systems of mass production. For the most part, customers have optics made that feature their required specifications. Holo/OR offers inexpensive tooling and low production costs. Multi-spot DOEs and homogenizers are currently available as standard elements for the wavelengths 850 nm and 532 nm. To learn more click here.

Posted in: Products

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Solving the Challenges of Grounding and Bonding Composite Airframes

Weight-saving composite airframes create new challenges in providing reliable grounding and bonding systems.

Posted in: On-Demand Webinars, Composites

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Generating Broadband Terahertz Radiation from Microplasma in Air

Researchers at the University of Rochester’s Institute of Optics have shown that a laser-generated microplasma in air can be used as a source of broadband terahertz radiation. Fabrizio Buccheri and Xi-Cheng Zhang recently demonstrated that an approach for generating terahertz waves using intense laser pulses in air – first pioneered in 1993 – can be done with much lower power lasers, a major challenge until now.

Posted in: Articles, Briefs

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Scientists Use X-Ray Laser to Track Ultrafast Creation of a Catalyst

An international team has, for the first time, precisely tracked the surprisingly rapid process by which light rearranges the outermost electrons of a metal compound and turns it into an active catalyst – a substance that promotes chemical reactions. The research, which was performed with an X-ray laser at the Department of Energy’s SLAC National Accelerator Laboratory, could help in the effort to develop novel catalysts to efficiently produce fuel using sunlight.

Posted in: Articles

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