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用于能量转换的材料和技术领域的研究工作约有三分之一依赖于微米范围内的材料加工激光系统--而且这一趋势正在增加。除了替换制造商已停产且也容易出现故障的过时UV激光器外，申请的现代皮秒激光系统还可以用于加工功能材料，热输入最少，结构宽度更小，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)和在微米范围内图案化涂层的能力对于自热传感器元件或微型分析设备的小型化以及高质量的平面高频谐振器的制造特别有利，甚至是不可或缺的。由于这种“冷”烧蚀的低热输入，使得材料的去除更温和，而不会对底层造成热损伤。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。特别是与基于气溶胶的不同材料类别的粉末的冷沉积(粉末气溶胶沉积方法，PADM)相结合，使全新的应用和材料配对成为可能，因为这样就可以在室温下形成层和结构。实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，是功能材料部及其研究工作的一个基本的重要、灵活和高精度的工具，利用它可以显著扩展可加工材料的光谱和结构宽度，并使相对简单和快速的原型生产成为可能。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，特别是在与功能材料的粉末气雾剂沉积有关的项目中。