TY - JOUR
T1 - Mechanical nanolattices printed using nanocluster-based photoresists
AU - Li, Qi
AU - Kulikowski, John
AU - Doan, David
AU - Tertuliano, Ottman A.
AU - Zeman, Charles J.
AU - Wang, Melody M.
AU - Schatz, George C.
AU - Gu, X. Wendy
N1 - Funding Information:
This work was financially supported by the National Science Foundation (CMMI-2052251 and DMR-2002936/2002891) and the American Chemical Society Petroleum Research Doctoral New Investigator Grant. D.D. acknowledges the National Science Foundation Graduate Research Fellowship under grant 1656518. J.K. was supported by a Stanford Graduate Fellowship. Part of this work was performed at the Stanford Nano Shared Facilities (SNSF) and Stanford Nanofabrication Facility (SNF), which are supported by the National Science Foundation under award ECCS-1542152.
Publisher Copyright:
© 2022 American Association for the Advancement of Science. All rights reserved.
PY - 2022/11/18
Y1 - 2022/11/18
N2 - Natural materials exhibit emergent mechanical properties as a result of their nanoarchitected, nanocomposite structures with optimized hierarchy, anisotropy, and nanoporosity. Fabrication of such complex systems is currently challenging because high-quality three-dimensional (3D) nanoprinting is mostly limited to simple, homogeneous materials. We report a strategy for the rapid nanoprinting of complex structural nanocomposites using metal nanoclusters. These ultrasmall, quantum-confined nanoclusters function as highly sensitive two-photon activators and simultaneously serve as precursors for mechanical reinforcements and nanoscale porogens. Nanocomposites with complex 3D architectures are printed, as well as structures with tunable, hierarchical, and anisotropic nanoporosity. Nanocluster-polymer nanolattices exhibit high specific strength, energy absorption, deformability, and recoverability. This framework provides a generalizable, versatile approach for the use of photoactive nanomaterials in additive manufacturing of complex systems with emergent mechanical properties.
AB - Natural materials exhibit emergent mechanical properties as a result of their nanoarchitected, nanocomposite structures with optimized hierarchy, anisotropy, and nanoporosity. Fabrication of such complex systems is currently challenging because high-quality three-dimensional (3D) nanoprinting is mostly limited to simple, homogeneous materials. We report a strategy for the rapid nanoprinting of complex structural nanocomposites using metal nanoclusters. These ultrasmall, quantum-confined nanoclusters function as highly sensitive two-photon activators and simultaneously serve as precursors for mechanical reinforcements and nanoscale porogens. Nanocomposites with complex 3D architectures are printed, as well as structures with tunable, hierarchical, and anisotropic nanoporosity. Nanocluster-polymer nanolattices exhibit high specific strength, energy absorption, deformability, and recoverability. This framework provides a generalizable, versatile approach for the use of photoactive nanomaterials in additive manufacturing of complex systems with emergent mechanical properties.
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U2 - 10.1126/science.abo6997
DO - 10.1126/science.abo6997
M3 - Article
C2 - 36395243
AN - SCOPUS:85142149822
VL - 378
SP - 768
EP - 773
JO - Science
JF - Science
SN - 0036-8075
IS - 6621
ER -