Transparent Electrodes: Templateless, Plating‐Free Fabrication of Flexible Transparent Electrodes with Embedded Silver Mesh by Electric‐Field‐Driven Microscale 3D Printing and Hybrid Hot Embossing (Adv. Mater. 21/2021)

Zhu, Xiaoyang; Li, Mingyang; Qi, Ximeng; Li, Hongke; Zhang, Yuan‐Fang; Li, Zhenghao; Peng, Zilong; Yang, Jianjun; Qian, Lei; Xu, Qi; Gou, Nairui; He, Jiankang; Li, Dichen; Lan, Hongbo

doi:10.1002/adma.202170165

Cited by 8 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, the Electrohydrodynamic jet (E‐Jet) printing has been regarded as a promising ink‐jet printing technology due to its advantages of high resolution, suitable for a wide range of ink viscosities, and easy fabrication of micro/nano dots or wires. [ 1–3 ] Therefore, it has been widely used in the manufacturing of transistors, [ 4–6 ] micro/nano sensors, [ 7,8 ] flexible electronics, [ 9–13 ] and biomaterials, [ 14–18 ] etc. The E‐Jet printing is a “pull” processing that uses an extra electric field to significantly improve resolution.…”

Section: Introductionmentioning

confidence: 99%

Substrate‐Independent Electrohydrodynamic Jet Printing with Dual‐Ring Electrostatic Focusing Structure

Liang

Xiao

et al. 2023

Adv Materials Technologies

View full text Add to dashboard Cite

Therefore, it has been widely used in the manufacturing of transistors, [4][5][6] micro/nano sensors, [7,8] flexible electronics, [9][10][11][12][13] and biomaterials, [14][15][16][17][18] etc. The E-Jet printing is a "pull" processing that uses an extra electric field to significantly improve resolution. When an appropriate electrical potential is applied to the extraction electrode at the outlet of a nozzle, a jet with a stable shape (Taylor cone) will be formed as a result of the balance of the electric field force, surface tension force, and gravity force. Different E-Jet printing modes (e.g., dropon-demand E-Jet, direct-writing E-Jet, and electrospray) can be realized by carefully adjusting the ink flux, the standoff height (nozzle-to-substrate distance), and the applied voltage, relying on a stable electrostatic field between the nozzle and the substrate. However, the E-Jet printing is hard to be applied in curved substrates due to the unstable electric field distribution caused by the variation of standoff height. Some scholars were concerned about this issue. Seong and his colleagues built the experimental setup to maintain a uniform electric field strength by implementing 3D movements of the nozzle to keep a constant standoff height during the printing. [19] Nevertheless, it is still difficult to control the jet with precision and consistency because the direction of the electric field varies with the relative position of the nozzle-substrate.In addition to curved substrates, the conductivity of the substrate is also an important factor affecting the E-Jet printing. Substrates with good electrical conductivity are often chosen because they can quickly direct residual charges away from the deposited droplets, thus improving the accuracy of the printed structures. In comparison, insulating substrates can severely degrade printing accuracy and resolution, and even interrupt the follow-on printing behavior. [20][21][22][23][24] That is because the polarization of the substrate under a strong electric field and the charge accumulation of the deposited droplets can change the electric field distribution between the substrate and the nozzle. Researchers have proposed ways to improve printing accuracy on insulating substrates. Dong and his coworkers presented an AC-pulse modulated E-Jet printing technology that can alternate the charge polarity of the consequent droplets to neutralize the residue charge on the substrate, which enables high-resolution printing of continuous patterns. [25] Wang et al. improved Electrohydrodynamic jet (E-Jet) printing is one of the most effective methods for fabricating micro/nanostructures due to its high-resolution, broad material adaptability, and simple process. However, printing high-resolution patterns on curved or insulated substrates still is of a great challenge because it is quite difficult to keep the electric field distribution stable between the nozzle and the substrate during the printing process. To address these issues, a dual-ring electrostatic focused electrohydro...

show abstract

Section: Introductionmentioning

confidence: 99%

Substrate‐Independent Electrohydrodynamic Jet Printing with Dual‐Ring Electrostatic Focusing Structure

Liang

Xiao

et al. 2023

Adv Materials Technologies

View full text Add to dashboard Cite

show abstract

“…[23][24][25][26] However, because of its extremely high printing resolution, printing large-scale 3D objects would be time consuming and would require inks with high solid content. [24] Among 3D printing techniques, digital light processing (DLP) has provided a way to fabricate complex, multi-material, or multifunctional objects with high accuracy and resolution in a bottom-up layer-by-layer fashion. [27][28][29][30][31] DLP relies on the selective photopolymerization of a liquid photoresin by UV light.…”

Section: Introductionmentioning

confidence: 99%

“…[22] EFD has been used to fabricate a 3D-printed Ag mesh with a sheet resistance of 0.75 Ω sq −1 when treated at 135 °C, and transparent glass heaters based on these metal grids were also developed. [23][24][25][26] However, because of its extremely high printing resolution, printing large-scale 3D objects would be time consuming and would require inks with high solid content. [24] Among 3D printing techniques, digital light processing (DLP) has provided a way to fabricate complex, multi-material, or multifunctional objects with high accuracy and resolution in a bottom-up layer-by-layer fashion.…”

Section: Introductionmentioning

confidence: 99%

Electrical Conductivity and Photodetection in 3D‐Printed Nanoporous Structures via Solution‐Processed Functional Materials

Xia

Dong

Sun

et al. 2023

Adv Materials Technologies

View full text Add to dashboard Cite

Abstract3D‐printed conductive structures are highly attractive due to their great potential for customizable electronic devices. While the traditional 3D printing of metal requires high temperatures to sinter metal powders or polymer/metal composites, low or room temperature processes will be advantageous to enable multi‐material deposition and integration of optoelectronic applications. Herein, digital light processing technology and inkjet printing are combined as an effective strategy to fabricate customized 3D conductive structures. In this approach, a 3D‐printed nanoporous (NPo) polymeric material is used as a substrate onto which a nanoparticle‐based Ag ink is printed. SEM and X‐ray nano computed tomography (nanoCT) measurements show that the porous morphology of the pristine NPo is retained after deposition and annealing of the Ag ink. By optimizing the deposition conditions, conductive structures with sheet resistance <2 Ω sq−1 are achieved when annealing at temperatures as low as 100 °C. Finally, the integration of an inkjet‐printed photodetector is investigated based on an organic semiconductor active layer onto the NPo substrate. Thus, the potential of this approach is demonstrated for the additive manufacturing of functional 3D‐printed optoelectronic devices.

show abstract

“…While PCB printers are efficient to manufacture, the devices produced by the printers do not possess flexible properties. At the same time, researchers have put forward high requirements for multilayer flexible electronics in terms of functions, [47][48][49][50][51] wire connection methods, [52,53] and overall structure utilization. [54,55] Therefore, 3D printing multilayer flexible electronics needs to reduce the cumbersome process combination as much as possible and take into account the multimaterial and multifunction.…”

Section: Introductionmentioning

confidence: 99%

Multinozzle 3D Printing of Multilayer and Thin Flexible Electronics

Wang

Zhu

et al. 2022

Adv Eng Mater

Self Cite

View full text Add to dashboard Cite

Multilayer flexible electronics have broad applications in the fields of sensors, biomedicine, flexible displays, etc. The existing multilayer flexible electronic manufacturing methods are complicated and usually require multiprocess and multiequipment combinations for processing; especially, it is difficult to achieve integrated manufacturing. The increase in the overall thickness of multilayer flexible electronics also limits its flexibility, stretchability, and spatial density. Herein, a method for integrated multinozzle 3D printing of multilayer flexible electronics with thin structures is proposed and a new strategy for interlayer interconnection is presented. Printing high‐viscosity stretchable silver paste on the edge of the multilayer dielectric material and avoiding microholes and vertically printed conductive micropillar structures in traditional interlayer interconnection wires are discussed. The influences of process parameters on the fabrication of multilayer and thin flexible electronics are explored, and the minimum layer thickness for the fabrication of multilayer circuits is determined. A five‐layer flexible pressure sensor and two flexible electromagnetic actuators with different coils are fabricated, and the related performance tests of the two devices are carried out. The test results demonstrate that the proposed fabrication method of flexible electronics provides a high‐efficiency, low‐cost, and simple manufacture solution for the fabrication of multilayer and thin flexible electronics.

show abstract

Transparent Electrodes: Templateless, Plating‐Free Fabrication of Flexible Transparent Electrodes with Embedded Silver Mesh by Electric‐Field‐Driven Microscale 3D Printing and Hybrid Hot Embossing (Adv. Mater. 21/2021)

Cited by 8 publications

References 0 publications

Substrate‐Independent Electrohydrodynamic Jet Printing with Dual‐Ring Electrostatic Focusing Structure

Substrate‐Independent Electrohydrodynamic Jet Printing with Dual‐Ring Electrostatic Focusing Structure

Electrical Conductivity and Photodetection in 3D‐Printed Nanoporous Structures via Solution‐Processed Functional Materials

Multinozzle 3D Printing of Multilayer and Thin Flexible Electronics

Contact Info

Product

Resources

About