Zobrazeno 1 - 10
of 241
pro vyhledávání: '"Ralph Spolenak"'
Autor:
Carmen M. Lauener, Fabian Schwarz, Laszlo Pethö, Jeffrey M. Wheeler, Johann Michler, Ralph Spolenak
Publikováno v:
Materials & Design, Vol 235, Iss , Pp 112423- (2023)
Measuring strain accurately at small length scales poses a significant challenge, making it difficult to obtain precise elastic properties of small materials. This becomes particularly pronounced for test geometries beyond micro-pillars and for mater
Externí odkaz:
https://doaj.org/article/2ccab9c84b294d55adc301550fd3e71c
Autor:
Nikolaus Porenta, Mirco Nydegger, Maxence Menétrey, Souzan Hammadi, Alain Reiser, Ralph Spolenak
Publikováno v:
Materials & Design, Vol 234, Iss , Pp 112364- (2023)
Across disciplines and length scales, alloying of metals is a common and necessary strategy to optimise materials performance. While the manufacturing of alloys in bulk and thin film form is well understood, the fabrication of alloyed 3D nanostructur
Externí odkaz:
https://doaj.org/article/8461835e66284d7bb4ccb58ebc81d40e
Publikováno v:
Materials & Design, Vol 225, Iss , Pp 111418- (2023)
Integrated additive manufacturing of actuators based on active materials could potentially replace conventional motors in numerous applications across disciplines like biomedical engineering, robotics, or aerospace. In this work, extrusion-based addi
Externí odkaz:
https://doaj.org/article/baba7351bd2a483cae76b0806f1a071e
Autor:
Marius A. Wagner, Fabian Schwarz, Nick Huber, Lena Geistlich, Henning Galinski, Ralph Spolenak
Publikováno v:
Materials & Design, Vol 221, Iss , Pp 110918- (2022)
Mechanical metamaterials are periodic lattice structures with complex unit cell architectures that can achieve extraordinary mechanical properties beyond the capability of bulk materials. A class of metamaterials is proposed, whose mechanical propert
Externí odkaz:
https://doaj.org/article/f91aaef066e64b80802163374624bf64
Autor:
Ming Chen, Laszlo Pethö, Alla S. Sologubenko, Huan Ma, Johann Michler, Ralph Spolenak, Jeffrey M. Wheeler
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-10 (2020)
Silicon is thought to be brittle, which limits its mechanical application in devices. Here, the authors lithographically fabricate silicon and show its superior surface quality leads to near ideal strength and micron-scale plasticity.
Externí odkaz:
https://doaj.org/article/6c0a441f4e924cc48460579893d91812
Autor:
Alain Reiser, Marcus Lindén, Patrik Rohner, Adrien Marchand, Henning Galinski, Alla S. Sologubenko, Jeffrey M. Wheeler, Renato Zenobi, Dimos Poulikakos, Ralph Spolenak
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-8 (2019)
Inkfree multi-material printing is a common challenge in 3D printing. Here, the authors introduce electrohydrodynamic redox printing, a method that enables the deposition of multiple metals and their alloys with nanoscale resolution and thus the synt
Externí odkaz:
https://doaj.org/article/e1aeab210d5b4315ae67f0afc4d4583b
Autor:
Bao Lin, Max Döbeli, Stephen Mudie, Adrian Hawley, Peter Hodgson, Lingxue Kong, Ralph Spolenak, Ludovic F. Dumée
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
Abstract The development of non-noble nano-porous metal materials is hindered by surface oxidation reactions and from the difficulty to generate long range order pore arrays. Dealloying is a promising route to generate such materials by selective che
Externí odkaz:
https://doaj.org/article/ed7c567ae5db4430ad50445cb7ffcafe
Publikováno v:
Materials & Design, Vol 193, Iss , Pp 108786- (2020)
Multi-principal element (MPE) alloys, sometimes also known as high entropy, complex concentration or multicomponent alloys, have attracted significant attention due to their remarkable mechanical properties, especially face-centered cubic (fcc) CrCoN
Externí odkaz:
https://doaj.org/article/7d64a1aeaba24bedb2c5920647f31280
Publikováno v:
Materials & Design, Vol 191, Iss , Pp - (2020)
Recent studies demonstrate novel metamaterials featuring unique properties by combining origami-inspired designs with additive manufacturing. In particular, the use of flexural hinges endows distinct advantages towards miniaturization and fabrication
Externí odkaz:
https://doaj.org/article/467a95ce2d3c45839b99c83eff265c04
Autor:
Yu Zou, Pawel Kuczera, Alla Sologubenko, Takashi Sumigawa, Takayuki Kitamura, Walter Steurer, Ralph Spolenak
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-7 (2016)
Quasicrystals are typically stiff and hard, but also brittle in bulk form at room temperature. Here, authors observe ductile behaviour in quasicrystalline pillars of submicron diameter and provide evidence for dislocation-based plasticity at intermed
Externí odkaz:
https://doaj.org/article/4a19fb6e2fee486ea1216102044ef292