纳米压印是最有希望的下一代纳米成像技术之一.基于其机械压印原理,纳米压印技术可以实现的图形分辨率超越了在别的传统技术中由光衍射或粒子束散射造成的局限.本文介绍纳米压印技术的基本原理,回顾了近期纳米压印抗蚀剂的研究进展.对影响抗蚀剂性能的主要因素进行讨论,包括玻璃化转化温度/热稳定性、粘度/平均分子量、抗蚀性能等.分别介绍了热压印和紫外压印的常见抗蚀剂材料,这些抗蚀剂的主要部分包括聚甲基丙烯酸甲酯(PMMA)、有机硅改性的聚(甲基)丙烯酸酯、聚酰胺酯、聚二甲基硅烷、聚乙烯基醚化合物、环氧树脂等,并给出这些抗蚀剂体系的优、缺点.本文还介绍了纳米压印抗蚀剂面临的主要问题,对纳米压印技术的优势和问题作了小结.
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