scholarly journals Hexagonal and Square Patterned Silver Nanowires/PEDOT:PSS Composite Grids by Screen Printing for Uniformly Transparent Heaters

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 468 ◽  
Author(s):  
Xin He ◽  
Gengzhe Shen ◽  
Ruibin Xu ◽  
Weijia Yang ◽  
Chi Zhang ◽  
...  
Keyword(s):  
Screen Printing ◽  
Silver Nanowires ◽  
Composite Films ◽  
Silver Nanowire ◽  
Mass Ratio ◽  
Large Area ◽  
High Transparency ◽  
Square Grid ◽  
Photoelectric Properties ◽  
Printing Parameters

Transparent conductive films with hexagonal and square patterns were fabricated on poly(ethylene terephthalate) (PET) substrates by screen printing technology utilizing a poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) and silver nanowire (Ag NWs) composite ink. The printing parameters—mesh number, printing layer, mass ratio of PEDOT:PSS to Ag NWs and pattern shape—have a significant influence on the photoelectric properties of the composite films. The screen mesh with a mesh number of 200 possesses a suitable mesh size of 74 µm for printing clear and integrated grids with high transparency. With an increase in the printing layer and a decrease in the mass ratio of PEDOT:PSS to Ag NWs, the transmittance and resistance of the printed grids both decreased. When the printing layer is 1, the transmittance and resistance are 85.6% and 2.23 kΩ for the hexagonal grid and 77.3% and 8.78 kΩ for the square grid, indicating that the more compact arrangement of square grids reduces the transmittance, and the greater number of connections of the square grid increases the resistance. Therefore, it is believed that improved photoelectric properties of transparent electrodes could be obtained by designing a printing pattern with optimized printing parameters. Additionally, the Ag NWs/PEDOT:PSS composite films with hexagonal and square patterns exhibit high transparency and good uniformity, suggesting promising applications in large-area and uniform heaters.

Highly flexible and conductive composite films of silk fibroin and silver nanowires for optoelectronic devices

RSC Advances ◽  
2015 ◽  
Vol 5 (63) ◽  
pp. 50878-50882 ◽  
Author(s):  
Ning Qi ◽  
Bing Zhao ◽  
Shu-Dong Wang ◽  
Salem S. Al-Deyab ◽  
Ke-Qin Zhang
Keyword(s):  
Silk Fibroin ◽  
Silver Nanowires ◽  
Composite Films ◽  
Optoelectronic Devices ◽  
Silver Nanowire ◽  
Ion Sputtering ◽  
Conductive Composite

Silver nanowire-coated silk fibroin composite films assisted by ion sputtering exhibited excellent flexibility, conductivity, which used to light LED device.

scholarly journals Fabrication of Screen Printing-Based AgNWs Flexible Transparent Conductive Film with High Stability

Micromachines ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1027
Author(s):  
Jianjun Yang ◽  
Wei Zeng ◽  
Yaxin Li ◽  
Zichuan Yi ◽  
Guofu Zhou
Keyword(s):  
Screen Printing ◽  
High Stability ◽  
Large Scale ◽  
Silver Nanowires ◽  
Low Cost ◽  
Optical Microscope ◽  
Light Transmittance ◽  
Large Area ◽  
Transparent Substrate ◽  
Conductive Thin Films

Flexible transparent conductive thin films (TCFs) prepared from Silver nanowires (AgNWs) have attractive features of low cost, flexibility, and solution-processed, but the usual manufacturing methods could still be hard to be scaled up. In addition, large-scale/large-area fabrication process with industrialized potential is strongly needed. In this paper, the flexible TCFs with high stability are obtained via using screen printing method to print the AgNWs inks on a flexible and transparent substrate. The micro-structure of the AgNWs patterns is investigated by optical microscope and scanning electron microscope. Furthermore, the sheet resistance, light transmittance, and film thickness of the AgNWs patterns prepared under different conditions are characterized to explore the influence of different factors on its optical and electrical properties.

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

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1360
Author(s):  
Pengchang Wang ◽  
Chi Zhang ◽  
Majiaqi Wu ◽  
Jianhua Zhang ◽  
Xiao Ling ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
High Performance ◽  
Silver Nanowires ◽  
Composite Films ◽  
Ambient Air ◽  
Optical Transmittance ◽  
Silver Nanowire ◽  
Solution Processed ◽  
Transparent Conductive Films ◽  
Conductive Films

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.

scholarly journals Silver Nanowire Ink for Flexible Circuit on Textiles

Micromachines ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 42 ◽  
Author(s):  
Dexi Du ◽  
Xing Yang ◽  
Yonglan Yang ◽  
Yuzhen Zhao ◽  
Yuehui Wang
Keyword(s):  
Screen Printing ◽  
Solvothermal Method ◽  
Silver Nanowires ◽  
Low Cost ◽  
Treatment Temperature ◽  
Silver Nanowire ◽  
Commercial Exploitation ◽  
Conductive Inks ◽  
Smart Products ◽  
New Generation

Low cost electronics implemented in textiles could pave the way to a fully new generation of smart products in the fields of healthcare, sport, fashion, and safety. Although many methods have found their way into the market, many problems still need to be solved and much progress has to be made to enable the commercial exploitation of such products. In this paper, silver nanowires of 60–100 nm in diameter and 8–15 μm in length were achieved by the polyol solvothermal method, and aqueous silver nanowire conductive inks were prepared with the synthesized silver nanowires as the conductive phase, in the presence of polyaniline, guar, and hydrochloric acid. The conductive inks were printed on cotton fabric substrate by screen printing process. The effects of the amount of silver nanowires, layers of coating, and treatment temperature on the microstructure and electrical properties of samples were investigated by scanning electron microscopy and the four-point probe method. The results show that the conductivity and densification of the samples increased with increased amount of silver nanowires, layers of coating, and treatment temperature. The heat treatment helped to improve densification of the silver nanowires and conductivity of the sample. The resistance of the samples increased after bending due to loosening of the overlap between the silver nanowires.

Environmentally responsive composite films fabricated using silk nanofibrils and silver nanowires

2018 ◽  
Vol 6 (47) ◽  
pp. 12940-12947 ◽  
Author(s):  
Jialin Liu ◽  
Tengyu He ◽  
Guangqiang Fang ◽  
Ranran Wang ◽  
Elbadawy A. Kamoun ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Humidity Sensor ◽  
Silver Nanowires ◽  
Composite Films ◽  
Silver Nanowire ◽  
Filtration Method ◽  
Vacuum Filtration ◽  
Environmentally Responsive

Two kinds of silk nanofibril/silver nanowire composite films were fabricated by using a facile vacuum-filtration method, and can act as a humidity sensor or a pressure sensor.

Transparent Film Heaters based on Silver Nanowire Random Networks

2012 ◽  
Vol 1449 ◽  
Author(s):  
Jean-Pierre Simonato ◽  
Caroline Celle ◽  
Celine Mayousse ◽  
Alexandre Carella ◽  
Henda Basti ◽  
...  
Keyword(s):  
Silver Nanowires ◽  
Silver Nanowire ◽  
Random Networks ◽  
Transparent Film ◽  
Heating Rates ◽  
Large Area ◽  
High Heating ◽  
Fabrication And Characterization ◽  
Printing Techniques

ABSTRACTWe present the fabrication and characterization of transparent thin film heaters (TTFHs) based on silver nanowires. The goal is to develop a simple process for the production of transparent heating elements by large area printing techniques. The TTFHs are based on recently developed random networks of silver nanowires. Thanks to the very low sheet resistance achievable with silver nanowires, we show that it is possible to obtain high heating rates and good steady state temperatures at low voltages, typically below 12 V.

scholarly journals Flexible and transparent silver nanowire structures for multifunctional electrical and optical biointerfacing

2020 ◽  
Author(s):  
Zhiyuan Chen ◽  
Nicolas Boyajian ◽  
Zexu Lin ◽  
Rose T. Yin ◽  
Sofian N. Obaid ◽  
...  
Keyword(s):  
High Performance ◽  
Mechanical Stability ◽  
Electrochemical Impedance ◽  
Silver Nanowires ◽  
Visible Spectrum ◽  
Heart Rhythm ◽  
Silver Nanowire ◽  
Large Area ◽  
Seamless Integration ◽  
Flexible Polymer

AbstractTransparent microelectrodes have recently emerged as a promising approach to combine electrophysiology with optophysiology for multifunctional biointerfacing. High-performance flexible platforms that allow seamless integration with soft tissue systems for such applications are urgently needed. Here, silver nanowires (Ag NWs)-based transparent microelectrodes and interconnects are designed to meet this demand. The Ag NWs percolating networks are patterned on flexible polymer substrates using an innovative photolithography-based solution-processing technique. The resulting nanowire networks exhibit a high average optical transparency of 76.1-90.0% over the visible spectrum, low normalized electrochemical impedance of 3.4-15 Ω cm2 at 1 kHz which is even better than those of opaque solid Ag films, superior sheet resistance of 11-25 Ω sq−1, excellent mechanical stability up to 10,000 bending cycles, good biocompatibility and chemical stability. Studies on Langendorff-perfused mouse and rat hearts demonstrate that the Ag NWs microelectrodes enable high-fidelity real-time monitoring of heart rhythm during co-localized optogenetic pacing and optical mapping with negligible light-induced electrical artifacts. This proof-of-concept work illustrates that the solution-processed, transparent, and flexible Ag NWs networks are a promising candidate for the next-generation of large-area multifunctional biointerfaces for interrogating complex biological systems in basic and translational research.

scholarly journals Effect of Silver Nanowire Plasmons on Graphene Oxide Coatings Reduction for Highly Transparent Electrodes

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Xingzhen Yan ◽  
Lu Zhou ◽  
Xuefeng Chu ◽  
Huan Wang ◽  
Fan Yang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Composite Structures ◽  
Uv Light ◽  
Silver Nanowires ◽  
Composite Films ◽  
Visible Spectrum ◽  
Silver Nanowire ◽  
Environmental Stability ◽  
Composite Electrodes ◽  
Spectrum Region

We prepared transparent conducting composite electrodes composed of silver nanowires (Ag NWs) and reduced graphene oxide (r-GO). We present a simple approach to welding the cross-positions of the Ag NWs by applying pressure at a relatively low temperature (100°C). We examined the Ag NWs/r-GO composite films in terms of their transmission, conductivity, and stability. The plasmonic features of the Ag NWs were used to assist the ultraviolet (UV) light-induced reduction of the GO coating. The r-GO coatings used to form Ag NWs/r-GO composite structures increased the conductivity of the film by providing more efficient electron conductive pathways. The G/D intensity ratios of the GO and r-GO produced by the UV light-induced method without and with Ag NWs were 0.95, 1.01, and 1.04, respectively. The lowest sheet resistance of the composite films was 7 ohm/sq with approximately 82% transparency in the visible spectrum region. No degradation of the films was observed after 2 months. This excellent environmental stability might facilitate applications of Ag NWs/r-GO composite films in optoelectronic devices.

scholarly journals Direct Printed Silver Nanowire Strain Sensor for Early Extravasation Detection

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2583
Author(s):  
Hsuan-Chin Lu ◽  
Ying-Chih Liao
Keyword(s):  
Silver Nanowire ◽  
Gauge Factor ◽  
Strain Sensing ◽  
Large Area ◽  
Resistance Change ◽  
Direct Printing ◽  
Specific Direction ◽  
Multiple Detection ◽  
Printed Patterns ◽  
Printing Parameters

In this study, we presented a wearable sensor patch for the early detection of extravasation by using a simple, direct printing process. Silver nanowire (AgNW) ink was first formulated to provide necessary rheological properties to print patterns on flexible plastic sheets. By adjusting printing parameters, alignments of AgNWs in the printed patterns were controlled to enhance the resistance change under stretching conditions. A resistive strain-sensing device was then fabricated by printing patterned electrodes on a stretchable film for skin attachment. The designed sensor pattern was able to detect forces from a specific direction from the resistance change. Moreover, the sensor showed excellent sensitivity (gauge factor (GF) = 100 at 50% strain) and could be printed in small dimensions. Sensors of millimeter size were printed in an array and were used for multiple detection points in a large area to detect extravasation at small volumes (<0.5 mL) at accurate bump location.

scholarly journals Novel Insights into Inkjet Printed Silver Nanowires Flexible Transparent Conductive Films

2021 ◽  
Vol 22 (14) ◽  
pp. 7719
Author(s):  
Yuehui Wang ◽  
Xiaoli Wu ◽  
Ke Wang ◽  
Kaiwen Lin ◽  
Hui Xie ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Inkjet Printing ◽  
Silver Nanowires ◽  
Temperature Drop ◽  
Silver Nanowire ◽  
Printing Process ◽  
Transparent Conductive Films ◽  
Conductive Films ◽  
Photoelectric Properties ◽  
Pet Substrate

Silver nanowire (AgNWs) inks for inkjet printing were prepared and the effects of the solvent system, wetting agent, AgNWs suspension on the viscosity, surface tension, contact angle between ink droplet and poly(ethylene) terephthalate (PET) surface, and pH value of AgNWs ink were discussed. Further, AgNWs flexible transparent conductive films were fabricated by using inkjet printing process on the PET substrate, and the effects of the number printing layer, heat treatment temperature, drop frequency, and number of nozzle on the microstructures and photoelectric properties of AgNWs films were investigated in detail. The experimental results demonstrated that the 14-layer AgNWs printed film heated at 60 °C and 70 °C had an average sheet resistance of 13 Ω∙sq−1 and 23 Ω∙sq−1 and average transparency of 81.9% and 83.1%, respectively, and displayed good photoelectric performance when the inkjet printing parameters were set to the voltage of 20 V, number of nozzles of 16, drop frequency of 7000 Hz, droplet spacing of 15 μm, PET substrate temperatures of 40 °C and nozzles of 35 °C during printing, and heat treatment at 60 °C for 20 min. The accumulation and overflow of AgNWs at the edges of the linear pattern were observed, which resulted in a decrease in printing accuracy. We successfully printed the heart-shaped pattern and then demonstrated that it could work well. This showed that the well-defined pattern with good photoelectric properties can be obtained by using an inkjet printing process with silver nanowires ink as inkjet material.

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