We have examined the effect of focused nanosecond laser pulses on the formation and tribological properties of microstructures in the form of a matrix of craters produced in a – C : H : Si : O diamond-like films (DLFs), both undoped and doped with tungsten. The studies are performed by scanning probe microscopy (SPM) using SPM probes of standard design with a tip and probes without a tip (tipless-type probes). A special procedure is developed for assessing the wettability (contact angle) of individual sections of the laser-induced microstructure by the local adhesion force. According to estimates, the material inside the crater becomes softer and more hydrophobic as a result of laser irradiation. This is manifested to the greatest extent in tungsten-doped DLFs, where the crater walls are arranged like terraces formed by 'nanoflakes', i.e. grains of the substance. Scanning of microstructures with a tipless probe in the regime of lateral force microscopy demonstrates a decrease in fr...

中文翻译：

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聚焦纳秒激光脉冲辐照对类金刚石薄膜微摩擦学性能的影响

我们已经研究了聚焦的纳秒激光脉冲对以– C：H：Si：O类金刚石薄膜（DLF）产生的凹坑矩阵形式形成的微结构的形成和摩擦学特性的影响，这些膜均未掺杂和掺杂钨。通过使用标准设计的带尖端的SPM探针和不带尖端的探针（无尖端型探针），通过扫描探针显微镜（SPM）进行研究。开发了一种特殊的程序，用于通过局部粘附力评估激光诱导的微结构各个部分的润湿性（接触角）。据估计，由于激光辐照，弹坑内部的材料变得更柔软，更疏水。这在掺钨的DLF中最大程度地体现出来，其中的坑壁排列像“ nanoflakes”形成的阶地，即 物质的颗粒。在横向力显微镜下用无针探针扫描显微结构表明，其结构减少了。