Results 31 to 40 of about 494,947 (250)

4D printing using anisotropic thermal deformation of 3D-printed thermoplastic parts

open access: yesMaterials & Design, 2020
Four-dimensional (4D) printing is an advanced application of 3D printing with the additional shapes changes over time. For appropriate shape changes, 4D printing has been developed using shape memory materials or multi-material structures with different ...
Bona Goo, Chae-Hui Hong, Keun Park
doaj   +1 more source

Reversible 4D-printing of shape memory polymers using heat and ethanol swelling

open access: yes, 2020
The advancements in smart materials have boosted additive manufacturing into a new form of printing known as 4D printing. 4D printing provides the means to create a dynamic structure for self-actuating devices fabricated by additive manufacturing ...
Lee, Amelia Yilin   +2 more
core   +1 more source

4D Printing Applications in the Development of Smart Cardiovascular Implants

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
Smart materials are able to react to different stimuli and adapt their shape to the environment. Although the development of 3D printing technology increased the reproducibility and accuracy of scaffold fabrication, 3D printed scaffolds can still be ...
Fatemeh Kabirian   +2 more
doaj   +1 more source

Online reinforcement learning for the shape morphing adaptive control of 4D printed shape memory polymer

open access: yes, 2022
Combining 3D printing and smart materials, 4D printing technologies enable the printed actuators to furtherchange their shapes or other properties after prototyping. However, the shape morphing of 4D printed actuatorssuffers from poor controllability and
Wang, Xi Vincent,   +3 more
core   +1 more source

Water-responsive 4D printing based on self-assembly of hydrophobic protein “Zein” for the control of degradation rate and drug release

open access: yesBioactive Materials, 2023
Four-dimensional (4D) printing is a promising technology that provides solutions for compelling needs in various fields. Most of the reported 4D printed systems are based on the temporal shape transformation of printed subjects.
Yubei Zhang   +8 more
doaj   +1 more source

Current progress of 4D-printing technology

open access: yes, 2021
Click on the DOI link to access the article (may not be free).The combination of smart materials to print a three-dimensional (3D) product has primarily driven the development of innovative technology, or four-dimensional (4D) printing.
Asmatulu, Eylem   +5 more
core   +1 more source

Application Progress of Food 4D Printing Technology in Food Industry

open access: yesShipin gongye ke-ji
4D printing technology, as an emerging printing technique that adds the dimension of "time" to 3D printing, not only enables the construction of complex structures in three-dimensional space but also allows for self-assembly and shape transformation of ...
Qiang TONG   +4 more
doaj   +1 more source

Recent progress of 4D printing in cancer therapeutics studies

open access: yesSLAS Technology, 2023
Cancer is a critical cause of global human death. Not only are complex approaches to cancer prognosis, accurate diagnosis, and efficient therapeutics concerned, but post-treatments like postsurgical or chemotherapeutical effects are also followed up. The
Atchara Chinnakorn   +4 more
doaj   +1 more source

Residual force and deformation measurement in FDM 4D printing

open access: yes, 2023
In FDM 4D printing, residual stresses are purposely introduce into a structure by controlling the print parameters. The residual stress introduction can be interpreted as the programming step of the shape memory cycle.
Mahlstedt, Dominik, Cerbe, Ferdinand
core   +1 more source

GelMA‐based 3D spheroids recapitulate transcriptomic and functional hallmarks of myeloid sarcoma

open access: yesFEBS Open Bio, EarlyView.
GelMA 5% hydrogels support the formation of myeloid leukemia spheroids that recapitulate MS‐specific features, including G1 arrest, apoptosis, and ECM‐driven transcriptomic reprogramming. The 3D model mimicked soft‐tissue‐like stiffness and oxygen conditions, and transcriptomic convergence with primary MS samples confirmed its utility as a preclinical ...
Nicolas Germain   +11 more
wiley   +1 more source

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