The engraving technique has grown in parallel with our human civilization, along with the targeted materials evolving from stone and metals to wood. Benefiting from the blossom of nanotechnology, the bulky nicking tools have downsized themselves to a micro-/nanoscale, such as laser beams, and the materials have been extended from traditional hard ones to soft functional nanomaterials. When ancient sculpture art meets modern advanced micro-/nano fabrication techniques and low-dimensional materials, impossible materials are born, which will redefine the functional scope of well-developed materials. Recently, a team from Tsinghua University reported such fascinating materials, graphene-based meta-aerogels, that process excellent elasticity, ultralight specific weight (down to 0.1 mg·cm−3), and superwide Poisson's ratio range (−0.95 < vpeak < 1.64) via facile and fast laser-engraving technique.
Zhao, Y.; Liu, J.; Hu, Y.; Cheng, H.; Hu, C.; Jiang, C.; Jiang, L.; Cao, A.; Qu, L. Highly compression-tolerant supercapacitor based on polypyrrole-mediated graphene foam electrodes. Adv. Mater. 2013, 25, 591–595.
Yang, H.; Li, Z.; Lu, B.; Gao, J.; Jin, X.; Sun, G.; Zhang, G.; Zhang, P.; Qu, L. Reconstruction of inherent graphene oxide liquid crystals for large-scale fabrication of structure-intact graphene aerogel bulk toward practical applications. ACS Nano 2018, 12, 11407–11416.
Guo, F.; Jiang, Y.; Xu, Z.; Xiao, Y.; Fang, B.; Liu, Y.; Gao, W.; Zhao, P.; Wang, H.; Gao, C. Highly stretchable carbon aerogels. Nat. Commun. 2018, 9, 881.
Xu, Y.; Sheng, K.; Li, C.; Shi, G., Self-assembled graphene hydrogel via a one-step hydrothermal process. ACS Nano 2010, 4, 4324–4330.
Yang, M.; Zhao, N.; Cui, Y.; Gao, W.; Zhao, Q.; Gao, C.; Bai, H.; Xie, T., Biomimetic architectured graphene aerogel with exceptional strength and resilience. ACS Nano 2017, 11, 6817–6824.
Yang, H.; Li, Z.; Sun, G.; Jin, X.; Lu, B.; Zhang, P.; Lin, T.; Qu, L. Superplastic air-dryable graphene hydrogels for wet-press assembly of ultrastrong superelastic aerogels with infinite macroscale. Adv. Funct. Mater. 2019, 29, 1901917.
Yao, B.; Chandrasekaran, S.; Zhang, H.; Ma, A.; Kang, J.; Zhang, L.; Lu, X.; Qian, F.; Zhu, C.; Duoss, E. B.; Spadaccini, C. M.; Worsley, M. A.; Li, Y. 3D-printed structure boosts the kinetics and intrinsic capacitance of pseudocapacitive graphene aerogels. Adv. Mater. 2020, 32, 1906652.
The articles published in this open access journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.