向上转换的光发光,用于监测在五秒钟内直接激光写生物墨的局部热释放
Amirbahador Zeynali1, Giuseppe Chirico2, Michael Heymann1
1IBBS, Institute for Biomaterials and Biomolecular Systems, University of Stuttgart, Stuttgart, Germany.
Small methods
|February 9, 2026
概括
研究人员开发了一种实时方法,可以在激光写作过程中使用上转化纳米粒子 (UCNP) 光发光来监测激光写作中的热量. 这种技术揭示了热失控效应,这对于优化激光辅助生物打印和生物墨水应用至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 生物技术是生物技术.
- 光学工程是指光学工程.
背景情况:
- 光聚合过程,特别是秒直接激光写作,产生热量.
- 了解和控制这种外热热对于涉及生物墨水等敏感材料的应用至关重要.
- 现有的温度计方法可能缺乏这些动态过程所需的精度或实时能力.
研究的目的:
- 开发和验证实时温度测量技术,用于监测秒直接激光写作期间的热信号.
- 为了研究过程参数 (扫描速度,激光功率,光启动器度) 对局部加热的影响.
- 为了确定热失控效应,并建立激光辅助生物打印的最佳条件.
主要方法:
- 使用NaYF4:Yb3+/Er3+上转化纳米粒子 (UCNP) 光发光用于温度传感.
- 在现场监测中采用了对线光刻和温度计激光配置.
- 实施统计短通过,以提高温度校准准确度.
主要成果:
- 实现了高温度测量性能,相对灵敏度为0.89-1.58%K-1和不确定性为0.2-0.4K.
- 观察到重要的热效应,包括超过120-140°C的短暂温度峰值,与工艺参数相关.
- 确定,只有在20微米/秒的扫描速度下才能保持生理条件.
结论:
- 开发的基于UCNP的温度计提供了一个强大的实时热监测工具,用于激光写作.
- 这些发现强调了管理热负荷的必要性,以防止生物墨的有害影响.
- 这项工作可以改善激光辅助生物打印和相关先进制造技术的流程控制.
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