Freestanding Thin-Film Materials
Abstract
Freestanding thin films, a class of low-dimensional materials capable of maintaining structural integrity without substrates, have emerged as a forefront research focus. Their unique advantages-circumventing substrate clamping, liberating intrinsic material properties, and enabling cross-platform heterogeneous integration-underpin this prominence. This review systematically summarizes core fabrication techniques, including physical delamination (e.g., laser lift-off, mechanical exfoliation) and chemical etching, alongside associated transfer strategies. It further explores the induced strain modulation mechanisms, extreme mechanical properties and interface decoupling effects enabled by these films. Representative case studies demonstrate breakthrough applications in flexible/ultrathin electronics, ultrahigh-sensitivity sensors and the exploration of novel quantum states. Critical challenges regarding scalable fabrication, precise interface control, and long-term stability are analyzed, concluding with prospects for emerging applications in bio-inspired intelligent devices, quantum precision sensing, and brain-inspired neural networks.
Keywords
Cite
@article{arxiv.2512.06637,
title = {Freestanding Thin-Film Materials},
author = {Li Liu and Peixin Qin and Guojian Zhao and Zhiyuan Duan and Jingyu Li and Sixu Jiang and Xiaoyang Tan and Xiaoning Wang and Ziang Meng and Zhiqi Liu},
journal= {arXiv preprint arXiv:2512.06637},
year = {2026}
}
Comments
64 pages, 13 figures, published online at Materials Today