Charge Manipulation Based Selective Functionalization of 3D Printed Structures for Functional Devices

Yang, Chen; Xiao, Ting; Hu, Minghui; Wang, Nan; Pan, Likun; Ling, Xiaofeng; Gao, Yang

doi:10.1002/admt.202100694

Cited by 2 publications

(2 citation statements)

References 44 publications

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“…The first one is located at 399.59 eV, corresponding to the pyrrolidone group of PVP, as same as that in N 1s spectrum of Ag NWs. [ 75 ] The other one located at 402.42 eV, assigned to the quaternary nitrogen, is found to have a redshift in comparison to the one for PCS. The redshift of the peak indicates that the quaternary nitrogen gains electrons from the oxygen and hydroxyl groups of Ag NWs during ionic interaction between PCS and Ag NWs.…”

Section: Resultsmentioning

confidence: 94%

“…As shown in Figure 3g, the N 1s spectrum of PCS has one peak located at 402.73 eV, corresponding to the quaternary nitrogen of AAC. [59,75] After Ag NW deposition, the N 1s spectrum of Ag NWs@PCS appears two distinct peaks. The first one is located at 399.59 eV, corresponding to the pyrrolidone group of PVP, as same as that in N 1s spectrum of Ag NWs.…”

Section: Characterization and Performance Study Of The Ag Nws@pcsmentioning

confidence: 99%

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All Digital Light Processing‐3D Printing of Flexible Sensor

Xiao

Yang

et al. 2022

Adv Materials Technologies

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conductivity and immunity to deformations, as well as a robust interface between them for long-term usage. In addition, a facile, cost-effective, and eco-friendly fabrication method is highly desirable for the whole flexible sensor.Among a variety of fabrication methods reported so far, lithography, [16][17][18][19] screen printing, [20][21][22][23][24] inkjet printing, [25][26][27][28][29] and electroless deposition, [30,31] are widely used in flexible sensor fabrication. However these 2D fabrication methods only can fabricate flexible sensor on a flat plane. 3D printing, also called additive manufacturing, provides a rapid prototyping strategy for industrial design, architecture, aerospace, dental and medical industries, and other fields. [32] Due to the ability to fabricate components and structures rapidly, cost-efficiently, and environmentally, in recent years, 3D printing has been explored for the fabrication of flexible sensor for electronics. [33] Up to now, 3D printing technologies used in the fabrication of flexible sensor include fused deposition modeling (FDM), [34][35][36][37][38] direct ink writing (DIW), [39][40][41] and digital light processing (DLP). [42][43][44][45] Li et al. developed a FDM-3D printed flexible strain sensor based on carbon black/thermoplastic polyurethane, and periodic configurations were designed to improve the flexibility of sensing unit. [46] Hensleigh and coworkers fabricated a flexible 3D capacitive sensor based on multi-material DIW-3D printing, which can be integrated into prosthetic and soft robotic. [47] Despite of these successful studies, extrusion-based 3D printing techniques typically suffer from limited raw materials, easy clogging of the needles, and nonuniformity of the printed layers. [48] The stereolithography-based 3D printing technique, DLP-3D printing, relying on layer-by-layer curing of photocurable resin, has high resolution, simple process, and fast forming speed. Technically, DLP 3D printing of flexible sensor can be divided into two routes. The first one is to 3D printing of molds or substrates, then active components are filled into the molds or deposited on the substrates to form flexible sensors. For instance, Wu's group report a flexible pressure sensor with porous structure used DLP-3D printed hydrolysable scaffold as sacrificial mold which need to be dissolved to create the porous structure for sensing unit after curing the conductive polymer composites. [49] Xia and coworkers fabricated a flexible pressure sensor by 3D-printing of microstructured substrate with gold film spray-coated on it. [50] The second route for DLP-3D Flexible sensor with high sensitivity, high durability, and facile fabrication process has promising applications in structural health monitoring, humanmachine interface, and soft robotics areas. Digital light processing-3D (DLP-3D) printing can print flexible sensor in a scalable process. However, to achieve all DLP-3D printing of flexible sensor, there still exist challenges of how to print sensing units with high sensitivit...

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Section: Resultsmentioning

confidence: 94%

Section: Characterization and Performance Study Of The Ag Nws@pcsmentioning

confidence: 99%

All Digital Light Processing‐3D Printing of Flexible Sensor

Xiao

Yang

et al. 2022

Adv Materials Technologies

Self Cite

View full text Add to dashboard Cite

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Fully Additively 3D Manufactured Conductive Deformable Sensors for Pressure Sensing

Massaroni,

Vitali,

Lo Presti

et al. 2024

Advanced Intelligent Systems

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Additive manufacturing technologies increasingly revolutionize current production techniques for object manufacturing. Particularly, fused deposition modeling (FDM) strongly impacts production processes by enabling the cost‐effective and efficient creation of structures with complex designs and innovative geometries. The use of conductive filaments in FDM printing is paving the way for the advancement of entirely printed sensors and circuits, although this domain is still in its early stages. In this article, the design and production of bilayer deformable pressure sensors fabricated using conductive thermoplastic polyurethane are investigated. The potential to vary the mechanical and electrical characteristics of FDM‐printed components by adjusting printing parameters is explored. The influence of different levels of material infill (20%, 50%, and 100%) and different contact geometries between layers (domes, pyramids, and cylinders) is studied. Electromechanical tests are carried out to characterize the sensor, applying pressures up to 22 kPa. The 3D‐printed pressure sensors demonstrate tunable mechanical and electrical sensitivities at different infill values, with the highest value of −6.3 kPa−1 achieved by using a pyramid layer at 100% infill. Sensor outputs registered during cyclic tests show reproducible responses with a wide range of sensitivity, paving the way for applicability in recording both static and periodic pressure changes.

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Charge Manipulation Based Selective Functionalization of 3D Printed Structures for Functional Devices

Cited by 2 publications

References 44 publications

All Digital Light Processing‐3D Printing of Flexible Sensor

All Digital Light Processing‐3D Printing of Flexible Sensor

Fully Additively 3D Manufactured Conductive Deformable Sensors for Pressure Sensing

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