scholarly journals Direct 3D Printing of Catalytically Active Structures

ACS Catalysis ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. 7567-7577 ◽  
Author(s):  
J. Sebastián Manzano ◽  
Zachary B. Weinstein ◽  
Aaron D. Sadow ◽  
Igor I. Slowing
Keyword(s):  
3D Printing ◽  
Active Structures ◽  
Catalytically Active

Sequential Electrodeposition of Bifunctional Catalytically Active Structures in MoO 3 /Ni–NiO Composite Electrocatalysts for Selective Hydrogen and Oxygen Evolution

2020 ◽  
Vol 32 (39) ◽  
pp. 2003414 ◽  
Author(s):  
Xiaopeng Li ◽  
Yang Wang ◽  
Jiajun Wang ◽  
Yumin Da ◽  
Jinfeng Zhang ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Active Structures ◽  
Catalytically Active

Catalytically active structures of SiO2-supported Au nanoparticles in low-temperature CO oxidation

2013 ◽  
Vol 3 (3) ◽  
pp. 679-687 ◽  
Author(s):  
Kun Qian ◽  
Liangfeng Luo ◽  
Huizhi Bao ◽  
Qing Hua ◽  
Zhiquan Jiang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
Active Structures ◽  
Catalytically Active ◽  
Low Temperature Co Oxidation

scholarly journals Composite Materials Manufactured by Photopolymer 3D Printing with Metal-Organic Frameworks

2021 ◽  
Vol 47 (5) ◽  
pp. 319-325
Author(s):  
A. I. Cherevko ◽  
G. L. Denisov ◽  
I. A. Nikovskii ◽  
A. V. Polezhaev ◽  
A. A. Korlyukov ◽  
...  
Keyword(s):  
Composite Materials ◽  
3D Printing ◽  
Metal Organic Framework ◽  
X Ray Diffraction ◽  
X Ray ◽  
Catalytically Active ◽  
Metal Organic ◽  
X Ray Computed ◽  
Organic Framework

Abstract New composite materials containing metal-organic framework (MOF-5) particles were manufactured by 3D printing. The optimal composition of the photopolymer formulation and printing conditions ensuring the highest quality of printing were selected. Retention of the metal-organic framework (MOF) structure in the resulting composite objects was demonstrated by powder X-ray diffraction. The distribution of MOF-5 particles over the whole bulk of the 3D product was studied by X-ray computed tomography. In the future, composite materials of this type containing catalytically active MOFs, with their structure and properties being controllable at the micro and macro levels, could find application as catalysts of various chemical processes.

scholarly journals Combined Level-Set-XFEM-Density Topology Optimization of Four-Dimensional Printed Structures Undergoing Large Deformation

2019 ◽  
Vol 141 (5) ◽  
Author(s):  
Markus J. Geiss ◽  
Narasimha Boddeti ◽  
Oliver Weeger ◽  
Kurt Maute ◽  
Martin L. Dunn
Keyword(s):  
Topology Optimization ◽  
3D Printing ◽  
Large Deformation ◽  
Level Set ◽  
Shape Change ◽  
Thermomechanical Model ◽  
Active Structures ◽  
Numerical Predictions ◽  
Multiple Materials ◽  
Material Layout

Advancement of additive manufacturing is driving a need for design tools that exploit the increasing fabrication freedom. Multimaterial, three-dimensional (3D) printing allows for the fabrication of components from multiple materials with different thermal, mechanical, and “active” behavior that can be spatially arranged in 3D with a resolution on the order of tens of microns. This can be exploited to incorporate shape changing features into additively manufactured structures. 3D printing with a downstream shape change in response to an external stimulus such as temperature, humidity, or light is referred to as four-dimensional (4D) printing. In this paper, a design methodology to determine the material layout of 4D printed materials with internal, programmable strains is introduced to create active structures that undergo large deformation and assume a desired target displacement upon heat activation. A level set (LS) approach together with the extended finite element method (XFEM) is combined with density-based topology optimization to describe the evolving multimaterial design problem in the optimization process. A finite deformation hyperelastic thermomechanical model is used together with an higher-order XFEM scheme to accurately predict the behavior of nonlinear slender structures during the design evolution. Examples are presented to demonstrate the unique capabilities of the proposed framework. Numerical predictions of optimized shape-changing structures are compared to 4D printed physical specimen and good agreement is achieved. Overall, a systematic design approach for creating 4D printed active structures with geometrically nonlinear behavior is presented which yields nonintuitive material layouts and geometries to achieve target deformations of various complexities.

Michael Pawlyn: Push the limits of 3D printing

Nature ◽  
2013 ◽  
Vol 494 (7436) ◽  
pp. 174-174 ◽  
Author(s):  
Michael Pawlyn
Keyword(s):  
3D Printing

High-resolution 3D printing in seconds

Nature ◽  
2020 ◽  
Vol 588 (7839) ◽  
pp. 594-595
Author(s):  
Cameron Darkes-Burkey ◽  
Robert F. Shepherd
Keyword(s):  
High Resolution ◽  
3D Printing

3D Printing for Development in the Global South

2014 ◽  
Author(s):  
Thomas Birtchnell ◽  
William Hoyle
Keyword(s):  
3D Printing ◽  
Global South
Sign in / Sign up

Export Citation Format

Share Document