Invisible Silver Nanomesh Skin Electrode via Mechanical Press Welding

Oh, Ji Soo; Oh, Jong Sik; Yeom, Geun Young

doi:10.3390/nano10040633

Cited by 16 publications

(18 citation statements)

References 46 publications

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“…The increase in T 550 was attributed to the reduced R q and effectively welded junctions of the AgNWs after thermal pressing. [ 43 ] The FoM of the welded AgNWs and hydroprinted welded AgNWs after thermal pressing was 1200, which was much higher than the value of 200 for the spin‐coated AgNWs (Figure 5f). This shows that the optoelectronic performance of the hydroprinted welded AgNWs after thermal pressing outperforms those of previously published studies.…”

Section: Resultsmentioning

confidence: 92%

Hydroprinting Technology to Transfer Ultrathin, Transparent, and Double‐Sided Conductive Nanomembranes for Multiscale 3D Conformal Electronics

et al. 2021

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Transparent multiscale 3D conformal electronics using hydroprinting with polyvinyl alcohol (PVA) as a sacrificial layer to transfer networks of silver nanowires (AgNWs) without a carrier layer is developed. However, AgNWs are known to disperse on water surfaces during the transfer process. Therefore, a functional film is developed by simultaneously welding and embedding AgNWs in the PVA through a simple one‐step thermal pressing, demonstrating that ultrathin, transparent, and double‐sided conductive/patterned nanomembranes with welded AgNWs can float on water without dispersion. The nanomembrane with an excellent figure of merit of 1200, a low sheet resistance of 16.2 Ω sq−1, and a high transmittance of 98.17% achieves conformal contact with excellent step surface coverage of complex macro‐ and microstructures because of its nanoscale thickness (54.39 nm) and numerous deformable micro‐ and nanopores. Furthermore, the double‐sided conductive nanomembranes facilitate wiring and layer‐by‐layer assembly, regardless of the transfer direction of the surface. As a proof‐of‐concept demonstration, a nanomembrane‐based aneurysm sensor is developed. Its high transparency enables coil embolization, and the sensor can measure the pushing force of the coil within an aneurysm in an endovascular simulator. Moreover, this newly developed hydroprinting technology provides a new method for the fabrication of transparent multiscale 3D conformal electronics.

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Section: Resultsmentioning

confidence: 92%

Hydroprinting Technology to Transfer Ultrathin, Transparent, and Double‐Sided Conductive Nanomembranes for Multiscale 3D Conformal Electronics

et al. 2021

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“…Before the welding, the haze percentage was 10.09%, and, after the welding at 100, 450, and 800 kHz, the haze percentage was continuously decreased to 9.04%, 7.76%, and 6.81%, respectively, with increasing the induction frequency. This decrease in haze is due to the decreased light scattering and lower angle scattering by the increased fusion of Ag NW junctions [ 29 ].…”

Section: Resultsmentioning

confidence: 99%

“…To improve the electrical and mechanical characteristics of the transparent electrode using Ag NWs, the welding process is necessary to enhance their performance. Ag NW welding using various methods has been investigated, such as heating, plasmonic effect, capillary force, chemical treatment, laser irradiation, and radiofrequency [ 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ]. The welding treatment can significantly reduce the contact resistance of the Ag NWs.…”

Section: Introductionmentioning

confidence: 99%

Radio Frequency Induction Welding of Silver Nanowire Networks for Transparent Heat Films

Wen

Tak

et al. 2021

Materials

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Transparent heat films (THFs) are attracting increasing attention for their usefulness in various applications, such as vehicle windows, outdoor displays, and biosensors. In this study, the effects of induction power and radio frequency on the welding characteristics of silver nanowires (Ag NWs) and Ag NW-based THFs were investigated. The results showed that higher induction frequency and higher power increased the welding of the Ag NWs through the nano-welding at the junctions of the Ag NWs, which produced lower sheet resistance, and improved the adhesion of the Ag NWs. Using the inductive welding condition of 800 kHz and 6 kW for 60 s, 100 ohm/sq of Ag NW thin film with 95% transmittance at 550 nm after induction heating could be decreased to 56.13 ohm/sq, without decreasing the optical transmittance. In addition, induction welding of the Ag NW-based THFs improved haziness, increased bending resistance, enabled higher operating temperature at a given voltage, and improved stability.

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“…Therefore, it is necessary to develop new materials to replace ITO. Several candidate materials have been developed to prepare flexible TCFs, including conductive polymers [ 5 ], metal nanowires [ 6 ], metal grids [ 7 , 8 ], ultrathin metal films [ 9 ], carbon nanotubes (CNTs) [ 10 ], and graphene [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Scalable Solution-Processed Fabrication Approach for High-Performance Silver Nanowire/MXene Hybrid Transparent Conductive Films

Wang

Zhang

et al. 2021

Nanomaterials

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The transparent conductive films (TCFs) based on silver nanowires are expected to be a next-generation electrode for flexible electronics. However, their defects such as easy oxidation and high junction resistance limit its wide application in practical situations. Herein, a method of coating Ti3C2Tx with different sizes was proposed to prepare silver nanowire/MXene composite films. The solution-processed silver nanowire (AgNW) networks were patched and welded by capillary force effect through the double-coatings of small and large MXene nanosheets. The sheet resistance of the optimized AgNW/MXene TCFs was 15.1 Ω/sq, the optical transmittance at 550 nm was 89.3%, and the figure of merit value was 214.4. Moreover, the AgNW/MXene TCF showed higher stability at 1600 mechanical bending, annealing at 100 °C for 50 h, and exposure to ambient air for 40 days. These results indicate that the novel AgNW/MXene TCFs have a great potential for high-performance flexible optoelectronic devices.

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Invisible Silver Nanomesh Skin Electrode via Mechanical Press Welding

Cited by 16 publications

References 46 publications

Hydroprinting Technology to Transfer Ultrathin, Transparent, and Double‐Sided Conductive Nanomembranes for Multiscale 3D Conformal Electronics

Hydroprinting Technology to Transfer Ultrathin, Transparent, and Double‐Sided Conductive Nanomembranes for Multiscale 3D Conformal Electronics

Radio Frequency Induction Welding of Silver Nanowire Networks for Transparent Heat Films

Scalable Solution-Processed Fabrication Approach for High-Performance Silver Nanowire/MXene Hybrid Transparent Conductive Films

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