• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Surface Science >Mid-infrared laser ablation of a hard biocomposite material: mechanistic studies of pulse duration and interface effects
【24h】

Mid-infrared laser ablation of a hard biocomposite material: mechanistic studies of pulse duration and interface effects

机译：硬生物复合材料的中红外激光烧蚀：脉冲持续时间和界面效应的机理研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Cortical bone is a hard biocomposite material comprising protein, mineral crystal and water. We have studied mid-infrared laser ablation of bovine cortical bone using a free-electron laser (FEL) and an Er:YAG laser at a wavelength of 2.94μm, comparing pulse duration and interface effects. Bovine bone samples were irradiated both in air and while irrigating with biologically inert perfluorocarbon. The perfluorocarbon dissipates heat and acoustical stress, and at the lowest scanning speeds, appears to inhibit carbonization. The ablation efficiency and etch rates are critically dependent on scanning speed, laser fluence, and the molecular weight and depth of the perfluorocarbon. The observed phenomenology is consistent with an explosive vaporization as the principal mechanism of ablation; in addition, there may be nonlinear absorption effects.
机译：皮质骨是一种坚硬的生物复合材料，包含蛋白质，矿物质晶体和水。我们研究了使用自由电子激光（FEL）和波长为2.94μm的Er：YAG激光对牛皮质骨进行中红外激光消融，比较了脉冲持续时间和界面效应。在空气中以及在用生物惰性全氟化碳冲洗的同时对牛骨样品进行辐照。全氟化碳会散发热量和声应力，并且在最低的扫描速度下似乎会抑制碳化。烧蚀效率和蚀刻速率主要取决于扫描速度，激光能量密度以及全氟化碳的分子量和深度。观察到的现象学与爆炸性汽化是消融的主要机理相一致。另外，可能存在非线性吸收效应。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号