Pulsed femtosecond laser system

脉冲飞秒激光系统

• 批准号: 467354208
• 金额: --
• 依托单位: Universität des Saarlandes
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2021
• 资助国家: 德国
• 起止时间: 2020-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/467354208?language=en
• 关键词: Pulsed; femtosecond; laser; system

Surfaces and their interactions with each other and their environment are of enormous complexity. Understanding them has been and will remain one of the great challenges of the natural sciences. Numerous functional properties of surfaces, such as frictional behavior, biofunctionality, electrical contact resistance, and antimicrobial properties, can be tuned in a wide range by targeted chemical and topographical modification of surfaces. The femtosecond pulse laser system applied for here will mainly serve this functionalization of surfaces. The DLIP (Direct Laser Interference Patterning) technique, which has been significantly developed in the group of the main applicant, will be used to generate periodic surface structures. The planned research areas include the interaction of bacteria and viruses with surfaces and the generation of friction-optimized structures. The equipment applied for is intended to replace an existing system with which extensive research has been carried out in numerous projects (DFG, DLR/ESA, NASA) in recent years. The interdisciplinary research carried out between materials science and biophysics contributes to the main focus NanoBioMed of Saarland University. In (surface) materials processing, femtosecond lasers are of particular interest. Due to the nature of the interaction with matter, this type of laser minimizes the thermal influence on the sample to a minimum through ultrashort pulses while simultaneously ablating material on the (sub-)micrometer scale with high edge and detail sharpness. This laser is thus also ideally suited for the second planned field of application, direct laser writing (DLW) for the targeted production of defined sample geometries, e.g. the production of micro bending beams for mechanical experiments on a small scale. Due to its age, the femtosecond laser system used so far, but no longer supplied with all relevant spare parts, is to be replaced by a more modern system with accessories. In order to exploit the full technical potential, state-of-the-art equipment is requested. In combination with the modernized equipment, the new laser system significantly strengthens and expands the research competence of the involved working groups, which can be mapped across topics and is essential for the further expansion of basic research at a top international level at the Saarbrücken Campus.

表面及其彼此之间及其环境的相互作用非常复杂，并且仍然是自然科学的巨大挑战之一，例如摩擦行为、生物功能、电接触电阻和表面电阻。抗菌特性，可以通过对表面进行有针对性的化学和形貌修饰来进行大范围的调整，这里应用的飞秒脉冲激光系统将主要服务于表面的功能化。已在主要申请人的团队中得到显着开发，将用于生成周期性表面结构。计划的研究领域包括细菌和病毒与表面的相互作用以及摩擦优化结构的生成。取代近年来在许多项目（DFG、DLR/ESA、NASA）中进行的广泛研究的现有系统。材料科学和生物物理学之间进行的跨学科研究有助于萨尔大学的纳米生物医学（NanoBioMed）的主要关注点。表面）材料由于与物质相互作用的性质，飞秒激光器特别受关注，这种类型的激光器通过超短脉冲将对样品的热影响降至最低，同时以高强度烧蚀（亚）微米尺度的材料。因此，该激光器也非常适合第二个计划的应用领域，即直接激光写入 (DLW)，用于有针对性地生产限定的样品几何形状，例如在小型工件上生产用于机械实验的微弯曲光束。由于其年代久远，目前使用的飞秒激光系统不再提供所有相关备件，将被更现代的系统和配件所取代，以充分发挥技术潜力。与现代化设备相结合，新的激光系统显着增强和扩展了相关工作组的研究能力，这些能力可以跨主题映射，对于进一步扩大顶层基础研究至关重要。萨尔布吕肯的国际水平校园。