概括
本研究介绍了微纳米设备的新型光学3D分析方法. 对于大型步骤结构,它可以达到15纳米的精度,从而实现了详细的表面造型.
科学领域:
- 光学计量学 在光学计量学
- 纳米技术 纳米技术
- 表面科学是一门学科.
背景情况:
- 具有大型步骤结构的微纳米设备的精确3D形状测量具有挑战性.
- 现有的方法可能缺乏复杂微电子元件所需的精度或速度.
研究的目的:
- 展示一种用于微纳米设备高精度3D分析的新型光学方法.
- 为了能够快速准确地描述具有较大尺寸比例的结构.
主要方法:
- 使用双直接飞行时间检测.
- 采用电子控制光学采样 (ECOPS) 方法来提高采购率.
- 点对点扫描以获取3D点云数据.
主要成果:
- 在距离测量中达到15nm的测量精度,平均值为4000个.
- 成功描述了一个10微米宽,62.3微米深的矩形微米槽.
- 微观结构的定量3D形状重建,精确度低于微米.
结论:
- 开发的光学方法提供了高精度和高速的3D表面造型.
- 这项技术在复杂的微电子设备的检查中具有潜在的应用.
- 双飞行时间方法对于大型阶梯结构是有效的.
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