Laser system for material processing in the micrometer range

用于微米范围材料加工的激光系统

• 批准号: 454840439
• 金额: --
• 依托单位: Universität Bayreuth
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/454840439?language=en
• 关键词: Laser; system; material; processing; micrometer

A flexible laser material processing system is of utmost importance for the precise fine structuring of a wide range of materials, for example in ceramic microsystems technology. About one third of the current research work of the Department of Functional Materials at the University of Bayreuth in the field of chemical sensor technology as well as materials and technologies for energy conversion is dependent on the laser system for material processing in the micrometer range - and the trend is increasing. In addition to the replacement of the obsolete UV laser, which has been discontinued by the manufacturer and is also susceptible to faults, the modern picosecond laser system applied for can also be used to process functional materials with minimal heat input and smaller structure widths but with very high precision, speed and flexibility. The ability to directly structure low and high temperature co-fired ceramics (LTCC or HTCC ceramics) and to pattern coatings in the micrometer range is particularly advantageous or even indispensable for the miniaturization of self-heated sensor elements or miniaturized analytical devices as well as for the manufacturing of planar high-frequency resonators of high quality. The low thermal input due to this "cold" ablation allows a gentler material removal without thermal damage of the underlying layers. Complex functional layers for gas sensors or metallic layers on flexible plastic substrates or foils can only be structured in this way. Especially the combination with the aerosol-based cold deposition of powders of different material classes (Powder Aerosol Deposition Method, PADM), which has been further developed as the European leader in this field, enables completely new applications and material pairings, since both layer formation and structuring are then possible at room temperature. The applied picosecond laser system, equipped with a camera-based positioning system, automatic focusing and a measuring microscope, represents an elementary important, flexible and high-precision tool for the Department of Functional Materials and its research work, with which the spectrum of processable materials and structure widths can be significantly expanded and which enables the comparatively simple and fast production of prototypes. New functionalities, measuring effects as well as innovative approaches are conceivable and are to be developed in new research projects, especially in connection with the powder aerosol deposition of functional materials.

灵活的激光材料加工系统对于各种材料的精确精细结构至关重要，例如在陶瓷微系统技术中。拜罗伊特大学功能材料系目前在化学传感器技术以及能量转换材料和技术领域的研究工作大约有三分之一依赖于微米范围内材料加工的激光系统 - 并且趋势正在增加。除了替换已被制造商停产且也容易出现故障的过时紫外激光器外，所应用的现代皮秒激光系统还可用于加工热输入最小、结构宽度更小的功能材料，但具有非常高的精度、速度和灵活性。直接构造低温和高温共烧陶瓷（LTCC 或 HTCC 陶瓷）以及在微米范围内形成涂层图案的能力对于自热传感器元件或小型化分析设备的小型化以及高品质平面高频谐振器的制造。这种“冷”烧蚀带来的低热输入可以更温和地去除材料，而不会造成底层的热损坏。气体传感器的复杂功能层或柔性塑料基板或箔上的金属层只能以这种方式构建。特别是与不同材料类别粉末的气溶胶冷沉积（粉末气溶胶沉积方法，PADM）相结合，该方法已作为欧洲该领域的领导者得到进一步发展，可实现全新的应用和材料配对，因为两层形成然后可以在室温下进行结构化。所应用的皮秒激光系统配备了基于相机的定位系统、自动对焦和测量显微镜，为功能材料系及其研究工作提供了一种基本的重要、灵活和高精度的工具，可加工的光谱材料和结构宽度可以显着扩展，从而可以相对简单和快速地生产原型。新的功能、测量效果以及创新方法是可以想象的，并将在新的研究项目中开发，特别是与功能材料的粉末气溶胶沉积相关的项目。