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Additive manufacturing of 3D nano-architected metals.
Vyatskikh, Andrey; Delalande, Stéphane; Kudo, Akira; Zhang, Xuan; Portela, Carlos M; Greer, Julia R.
Afiliación
  • Vyatskikh A; Division of Engineering and Applied Sciences, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA, 91125, USA.
  • Delalande S; Scientific Department, PSA Group, Centre Technique de Vélizy 2, route de Gizy, Vélizy-Villacoublay, 78943, France.
  • Kudo A; Division of Engineering and Applied Sciences, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA, 91125, USA.
  • Zhang X; Center of Advanced Mechanics and Materials, Department of Engineering Mechanics, Tsinghua University, Beijing, 10084, China.
  • Portela CM; Division of Engineering and Applied Sciences, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA, 91125, USA.
  • Greer JR; Division of Engineering and Applied Sciences, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA, 91125, USA. jrgreer@caltech.edu.
Nat Commun ; 9(1): 593, 2018 02 09.
Article en En | MEDLINE | ID: mdl-29426947
Most existing methods for additive manufacturing (AM) of metals are inherently limited to ~20-50 µm resolution, which makes them untenable for generating complex 3D-printed metallic structures with smaller features. We developed a lithography-based process to create complex 3D nano-architected metals with ~100 nm resolution. We first synthesize hybrid organic-inorganic materials that contain Ni clusters to produce a metal-rich photoresist, then use two-photon lithography to sculpt 3D polymer scaffolds, and pyrolyze them to volatilize the organics, which produces a >90 wt% Ni-containing architecture. We demonstrate nanolattices with octet geometries, 2 µm unit cells and 300-400-nm diameter beams made of 20-nm grained nanocrystalline, nanoporous Ni. Nanomechanical experiments reveal their specific strength to be 2.1-7.2 MPa g-1 cm3, which is comparable to lattice architectures fabricated using existing metal AM processes. This work demonstrates an efficient pathway to 3D-print micro-architected and nano-architected metals with sub-micron resolution.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2018 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2018 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido