In this Letter, we propose a new (to the best of our knowledge), promising concept of a hybrid femtosecond (fs) laser processing method composed of single-point scanning and holographic light modulation fabrication for manufacturing a tunable-size microtrap chip. The hybrid method not only ensures key microfluidic device precision but also greatly improves the fabrication speed. By using a new asymmetry-bracket-shaped microtrap design with a mechanical strain stretching method, real-time size-tunable trapping is obtained, and a 100% particle trapping retention is realized, ignoring the flow fluctuation. Finally, the microtrap array is successfully applied to trap single yeast cells and hold them for $\sim{10}\;{\rm h}$∼10h without escaping.

中文翻译：

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具有高陷阱保留率的尺寸可调微陷阱芯片的混合飞秒激光制造。

在这封信中，我们提出了一种新的（据我们所知）充满希望的混合飞秒（fs）飞秒激光加工方法的概念，该方法由单点扫描和全息光调制制造构成，用于制造可调大小的微阱芯片。混合方法不仅可以确保关键的微流控设备的精度，而且可以大大提高制造速度。通过使用具有机械应变拉伸方法的新型不对称支架形微阱设计，可以获得实时的尺寸可调捕集，并且实现了100％的颗粒捕集保留率，而无需考虑流量波动。最终，微阱阵列成功地用于捕获单个酵母细胞，并在不逃逸的情况下将它们保持$ \ sim {10} \; {\ rm h} $〜10h。