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IntroductionThe small hole mode swing laser welding has gained increasing recognition due to its ability to bridge gaps, refine microstructures, and enhance the mechanical properties of welds. However, the effects of amplitude, frequency, welding speed, laser beam power, and beam radius on heat flux distribution, melting mode, and three-dimensional temperature field have not been well understood. ...
Researchers from the Massachusetts Institute of Technology and the University of Texas at Austin showcased the first chip based resin 3D printer. Their concept verification tool consists of a millimeter sized photon chip that emits a programmable beam of light into resin holes, which solidify into a solid structure when exposed to light.The prototype processor does not have mobile components, but ...
Pierre Agostini, Ferenc Krausz, and Anne L'Huillier won the award for their ultra short optical pulses, which made close research on electrons possible.Ferenc Klaus, Anne Lullier, and Pierre Agostini (from left to right)Image sources: BBVA Foundation, Kenneth Ruona/Lund University, Ohio State UniversityThis year's Nobel Prize in Physics was awarded to three physicists - Pierre Agostini of Ohio St...
CU Boulder published a study in Optical Letters demonstrating a new high-speed laser guidance method for imaging applications, using a fluid scanner built around an electrowetting prism to replace traditional mechanical components."Most laser scanners today use mechanical mirrors to steer beams of light," said Darwin Quiroz from CU Boulder."Our approach replaces that with a transmissive, non-mecha...
Recently, scientists from the National Ignition Facility at Lawrence Livermore National Laboratory in California produced a burst of energy by bombarding hydrogen pellets with 192 laser beams, briefly reproducing the fusion process that powers the sun. This is a repeat of an experiment in December last year, but this time the scientists generated more energy, with a gain almost double that of the ...