3D Printing of Conductive Hydrogel–Elastomer Hybrids for Stretchable Electronics

2021 ◽  
Author(s):  
Heng Zhu ◽  
Xiaocheng Hu ◽  
Binhong Liu ◽  
Zhe Chen ◽  
Shaoxing Qu
Keyword(s):  
3D Printing ◽  
Stretchable Electronics ◽  
Conductive Hydrogel

3D Printing/Interfacial Polymerization Coupling for the Fabrication of Conductive Hydrogel

2018 ◽  
Vol 303 (4) ◽  
pp. 1700356 ◽  
Author(s):  
Erika Fantino ◽  
Ignazio Roppolo ◽  
Dongxing Zhang ◽  
Junfeng Xiao ◽  
Annalisa Chiappone ◽  
...  
Keyword(s):  
3D Printing ◽  
Interfacial Polymerization ◽  
Conductive Hydrogel

3D printing of dual cross-linked hydrogel for fingerprint-like iontronic pressure sensor

2021 ◽  
Author(s):  
Honghao Yan ◽  
Jun Zhou ◽  
Chengyun Wang ◽  
Huaqiang Gong ◽  
Wu Liu ◽  
...  
Keyword(s):  
3D Printing ◽  
Pressure Sensor ◽  
High Sensitivity ◽  
Human Motion ◽  
Printing Technology ◽  
Digital Light Processing ◽  
Detection Range ◽  
3D Printing Technology ◽  
Flexible Devices ◽  
Conductive Hydrogel

Abstract Hydrogels with intrinsic high stretchability and flexibility are extremely attractive for soft electronics. However, the existing complicated and laborious methods (such as mold curing) to fabricate microstructured hydrogel (MH) still limit the development of hydrogel-based sensors for flexible devices. Herein, we use digital light processing 3D printing technology to rapidly construct double-network (DN) ionic conductive hydrogel, and then design and print fingerprint-like MH film to manufacture an iontronic pressure sensor. In particular, the DN hydrogel consists of acrylamide/acrylic acid to form a covalently cross-linked network, and magnesium chloride is introduced to form an ionic cross-linked physical network in the hydrogel. The printability (with resolution 150 μm) and mechanical property tunability of DN hydrogel enable the convenient fabrication of sensors. With the biomimetic fingerprint MH film, the iontronic pressure sensor not only has a high sensitivity (0.06 kPa-1), but also has a large detection range (26 Pa-70 kPa) and good stability (200 cycles of pressure loading). We demonstrated that our sensor can be applied to realize tactile sensing in a prosthetic application and detect human motion. With the easy strategy of constructing DN hydrogel with microstructures by 3D printing technology, hydrogel-based sensors are anticipated to be employed in more smart electronics.

A highly elastic, Room-temperature repairable and recyclable conductive hydrogel for stretchable electronics

2021 ◽  
Vol 588 ◽  
pp. 295-304
Author(s):  
Haifei Wang ◽  
Jiameng Lu ◽  
Huayi Huang ◽  
Senlin Fang ◽  
Muhammad Zubair ◽  
...  
Keyword(s):  
Room Temperature ◽  
Stretchable Electronics ◽  
Conductive Hydrogel

scholarly journals 3D printing-directed flexible strain sensors of accordion-like architecture to achieve ultrastretchability with the assist of ultrasonic cavitation treatment

2021 ◽  
Vol 2085 (1) ◽  
pp. 012042
Author(s):  
Y F Qu ◽  
J H Ma ◽  
Y Q He ◽  
L Zhang ◽  
F C Ren ◽  
...  
Keyword(s):  
3D Printing ◽  
Fused Deposition Modeling ◽  
Thermoplastic Polyurethane ◽  
Matrix Material ◽  
Ultrasonic Cavitation ◽  
Strain Sensors ◽  
Stretchable Electronics ◽  
Fused Deposition ◽  
The Matrix ◽  
Manufacturing Procedure

Abstract A new class of accordion-like cellular architecture with sinusoidal struts is designed to enhance the planar stretchability of cellular solids, aiming to fabricate flexible strain sensors with ultrastretchability. The combination manufacturing process of fused deposition modeling (FDM) 3D printing technique and ultrasonic cavitation-enabled treatment was introduced into the fabrication of flexible strain sensors made of thermoplastic polyurethane (TPU) substrate and carbon nanotubes (CNTs). A negative Poisson’s ratio (NPR) architecture made of TPU was firstly 3D-printed by FDM. The ultrasonic cavitation treatment was then conducted on the soft auxetic structure immersing in CNTs liquid, aiming to embed the CNTs into the surface layer of the flexible TPU substrate with NPR configurations. Instead of 3D printing the TPU matrix composite after hybridization inside the matrix material, the hybrid manufacturing procedure can ensure that the intrinsic excellent mechanical properties of TPU are not embrittled. Besides, the sinusoidal struts in accordion-like cellular architectures offer a design route to extend the material property chart to achieve ultrahigh stretchability in lightweight 3D printable flexible polymers for the applications that require combined stretchability, lightweight, and energy absorption such as soft robotics, stretchable electronics, and wearable protection shields.

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
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