Multistable Thermal Actuators Via Multimaterial 4D Printing

2018 ◽  
Vol 4 (3) ◽  
pp. 1800495 ◽  
Author(s):  
Hoon Yeub Jeong ◽  
Eunseo Lee ◽  
Sangho Ha ◽  
Namhun Kim ◽  
Young Chul Jun
Keyword(s):  
4D Printing ◽  
Thermal Actuators

4D printing technology, modern era: A short review

2020 ◽  
pp. 92-111
Author(s):  
Khodadad Mostakim ◽  
Nahid Imtiaz Masuk ◽  
Md. Rakib Hasan ◽  
Md. Shafikul Islam
Keyword(s):  
Smart Materials ◽  
Computer Aided Design ◽  
Short Review ◽  
Stimuli Responsive ◽  
4D Printing ◽  
Space Applications ◽  
Printing Technology ◽  
Practical Applications ◽  
Biomedical Technologies ◽  
Novel Material

The advancement in 3D printing has led to the rapid growth of 4D printing technology. Adding time, as the fourth dimension, this technology ushered the potential of a massive evolution in fields of biomedical technologies, space applications, deployable structures, manufacturing industries, and so forth. This technology performs ingenious design, using smart materials to create advanced forms of the 3-D printed specimen. Improvements in Computer-aided design, additive manufacturing process, and material science engineering have ultimately favored the growth of 4-D printing innovation and revealed an effective method to gather complex 3-D structures. Contrast to all these developments, novel material is still a challenging sector. However, this short review illustrates the basic of 4D printing, summarizes the stimuli responsive materials properties, which have prominent role in the field of 4D technology. In addition, the practical applications are depicted and the potential prospect of this technology is put forward.

scholarly journals An ontology-based framework to formalize and represent 4D printing knowledge in design

2021 ◽  
Vol 126 ◽  
pp. 103374
Author(s):  
Saoussen Dimassi ◽  
Frédéric Demoly ◽  
Christophe Cruz ◽  
H. Jerry Qi ◽  
Kyoung-Yun Kim ◽  
...  
Keyword(s):  
4D Printing

4D printing of lotus root powder gel: Color change induced by microwave

2021 ◽  
Vol 68 ◽  
pp. 102605
Author(s):  
Chen Chen ◽  
Min Zhang ◽  
Chaofan Guo ◽  
Huizhi Chen
Keyword(s):  
Color Change ◽  
4D Printing ◽  
Lotus Root

scholarly journals Controlled Fabrication of Quality ZnO NWs/CNTs and ZnO NWs/Gr Heterostructures via Direct Two-Step CVD Method

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1836
Author(s):  
Nicholas Schaper ◽  
Dheyaa Alameri ◽  
Yoosuk Kim ◽  
Brian Thomas ◽  
Keith McCormack ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Chemical Vapor ◽  
Single Walled Carbon Nanotubes ◽  
Materials Synthesis ◽  
Oxide Nanowires ◽  
Cvd Method ◽  
Thermal Actuators ◽  
Potential Applications ◽  
Walled Carbon Nanotubes ◽  
Scalable Production

A novel and advanced approach of growing zinc oxide nanowires (ZnO NWs) directly on single-walled carbon nanotubes (SWCNTs) and graphene (Gr) surfaces has been demonstrated through the successful formation of 1D–1D and 1D–2D heterostructure interfaces. The direct two-step chemical vapor deposition (CVD) method was utilized to ensure high-quality materials’ synthesis and scalable production of different architectures. Iron-based universal compound molecular ink was used as a catalyst in both processes (a) to form a monolayer of horizontally defined networks of SWCNTs interfaced with vertically oriented ZnO NWs and (b) to grow densely packed ZnO NWs directly on a graphene surface. We show here that our universal compound molecular ink is efficient and selective in the direct synthesis of ZnO NWs/CNTs and ZnO NWs/Gr heterostructures. Heterostructures were also selectively patterned through different fabrication techniques and grown in predefined locations, demonstrating an ability to control materials’ placement and morphology. Several characterization tools were employed to interrogate the prepared heterostructures. ZnO NWs were shown to grow uniformly over the network of SWCNTs, and much denser packed vertically oriented ZnO NWs were produced on graphene thin films. Such heterostructures can be used widely in many potential applications, such as photocatalysts, supercapacitors, solar cells, piezoelectric or thermal actuators, as well as chemical or biological sensors.

4D Printing of Hygroscopic Liquid Crystal Elastomer Actuators

Small ◽  
2021 ◽  
pp. 2100910
Author(s):  
Keumbee Kim ◽  
Yuanhang Guo ◽  
Jaehee Bae ◽  
Subi Choi ◽  
Hyeong Yong Song ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
4D Printing ◽  
Liquid Crystal Elastomer

scholarly journals 4D printing of reconfigurable metamaterials and devices

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Teunis van Manen ◽  
Shahram Janbaz ◽  
Kaspar M. B. Jansen ◽  
Amir A. Zadpoor
Keyword(s):  
Fused Deposition Modeling ◽  
Production Method ◽  
Single Step ◽  
Layer By Layer ◽  
Design Strategies ◽  
4D Printing ◽  
Large Shift ◽  
Simple Modification ◽  
3D Shape ◽  
Fused Deposition

AbstractShape-shifting materials are a powerful tool for the fabrication of reconfigurable materials. Upon activation, not only a change in their shape but also a large shift in their material properties can be realized. As compared with the 4D printing of 2D-to-3D shape-shifting materials, the 4D printing of reconfigurable (i.e., 3D-to-3D shape-shifting) materials remains challenging. That is caused by the intrinsically 2D nature of the layer-by-layer manner of fabrication, which limits the possible shape-shifting modes of 4D printed reconfigurable materials. Here, we present a single-step production method for the fabrication and programming of 3D-to-3D shape-changing materials, which requires nothing more than a simple modification of widely available fused deposition modeling (FDM) printers. This simple modification allows the printer to print on curved surfaces. We demonstrate how this modified printer can be combined with various design strategies to achieve high levels of complexity and versatility in the 3D-to-3D shape-shifting behavior of our reconfigurable materials and devices. We showcase the potential of the proposed approach for the fabrication of deployable medical devices including deployable bifurcation stents that are otherwise extremely challenging to create.

scholarly journals 4D Printing: Enabling Technology for Microrobotics Applications

2021 ◽  
pp. 2000216
Author(s):  
Georges Adam ◽  
Amine Benouhiba ◽  
Kanty Rabenorosoa ◽  
Cédric Clévy ◽  
David J. Cappelleri
Keyword(s):  
Enabling Technology ◽  
4D Printing
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