Yang Yang, Yang Jianjun, Liang Chunyong, Wang Hongshui, Zhu Xiaonong, Zhang Nan
Institute of Modern Optics, Nankai University, Key Laboratory of Opto-electronic Information Science and Technology, Education Ministry of China, Tianjin, 300071, China.
Opt Express. 2009 Nov 9;17(23):21124-33. doi: 10.1364/OE.17.021124.
Microstructuring of Ti plates with femtosecond laser pulses is investigated in three different liquids. In these ambiences, complex microstructures with voids and islands are produced on the sample surfaces, whose feature sizes are controlled by the laser parameters. Through adopting supersaturated Hydroxyapatite suspension with higher incident laser fluences, it is for the first time to observe the firm deposition of biocompatible elements Ca-P on the microstructures. At lower laser fluence, only porous structure is present but without additional elements deposition. Both plasma-related ablation under the confinement of liquids and micro-bubbles striking are employed to discuss such structures formation. Tight combining elements Ca-P onto the structured surfaces provide a new way to improve the biocompatibility of body-embedded devices.
研究了飞秒激光脉冲对钛板在三种不同液体中的微结构化处理。在这些环境中，样品表面产生了带有孔隙和岛状结构的复杂微观结构，其特征尺寸由激光参数控制。通过采用具有较高入射激光能量密度的过饱和羟基磷灰石悬浮液，首次观察到生物相容性元素钙 - 磷在微观结构上的牢固沉积。在较低的激光能量密度下，仅存在多孔结构，但没有额外元素沉积。利用液体约束下的等离子体相关烧蚀和微气泡撞击来讨论这种结构的形成。将钙 - 磷元素紧密结合到结构化表面为改善植入人体设备的生物相容性提供了一种新方法。
