Direct Laser Interference Patterning

许多大型部件需要经过特殊处理的表面来实现其功能。这些包括电化学蚀刻的金属板，一种含有有毒废水的能源密集型工艺，以及复合材料的“粗糙化”以产生更好的粘合剂接头。粗糙的表面确保粘合剂很好地键合到其上以获得额外的强度。激光加工提供了一种更有效和更清洁的方式来创建这些纹理，但传统上很慢，很难实现精细的纹理。该项目将展示使用高功率激光器和光束传输来创建干涉图案，以克服这些问题，并提供一种商业上可行的，节能和环保的表面处理技术，在广泛的制造业中有许多应用。

Many large components require specially treated surfaces for their functionality. These include metal plates that are electrochemically etched, an energy intensive process with a toxic effluent, and the "roughening" of composites to create better adhesive joints. The roughened surface ensures that the adhesive is well keyed to it for additional strength. Laser processing offers a more efficient and cleaner way of creating these textures but is traditionally slow and has difficulty achieving fine textures. This project will demonstrate the use of high power lasers and a beam delivery that creates interference patterns to overcome these issues and provide a commercially viable, energy efficient and environmentally friendly surface processing technology with many applications in a wide range of manufacturing sectors.