This year is also the 50th anniversary of the discovery of exfoliated graphite as a particularly uniform substrate (Thomy and Duval in J Chim Phys 66:1966, 1969. https://doi.org/10.1051/jcp/196966s21966, J Chim Phys 67:286, 1970. https://doi.org/10.1051/jcp/1970670286, J Chim Phys 67:1101, 1970. https://doi.org/10.1051/jcp/1970671101). In this article, we focus on the study of helium films on graphite-based substrates at ultralow temperatures. We provide a flavour of the historical development of this subject and a perspective on the current status. We discuss how atomically layered helium films provide model systems for the realization of a broad range of quantum materials of generic significance. Future prospects arising from new techniques and new substrates will also be discussed.

今年也是剥离石墨发现特别均匀的基底的50周年纪念（Thomy和Duval在J Chim Phys 66：1966，1969. https://doi.org/10.1051/jcp/196966s21966，J Chim Phys 67 ：286，1970。https：//doi.org/10.1051/jcp/1970670286，J Chim Phys 67：1101，1970。https：//doi.org/10.1051/jcp/1970671101）。在本文中，我们重点研究超低温下石墨基衬底上的氦膜。我们提供了该主题的历史发展风味以及对当前状态的看法。我们讨论原子层氦膜如何为实现具有普遍意义的多种量子材料提供模型系统。也将讨论由新技术和新基板引起的未来前景。