Advanced Materials Interfaces
·
2021
·Vol. 8
·期 13
·2100548
·
IF 6.147
Dongdong Li,Wen-Yong Lai,Fang Feng,Wei Huang
Screen printing is an important technique for creating 2D conductive patterns with high conductivity and resolution. Non-conductive additives are thus required in printable ink formulation in order to achieve appropriate viscosity and rheological behaviors. However, it is still a challenge to recover the conductivity of the printed networks after screen printing, while keeping the integrity of the patterns during repeated water-washing. Herein, a series of post-treatments are introduced into the washing process in order to achieve high-quality silver nanowire (Ag NW) transparent conductive films. Screen-printed patterns can be well maintained because of the enhanced adhesion between the Ag NW networks and flexible poly(ethylene terephthalate) substrates. High-performance transparent conductive film with extremely low sheet resistance (0.72 Ω sq −1 ) is achieved by combining plasma treatment, thermal annealing, and high pressure, making screen-printed Ag NW conductive networks promising to be used in the next-generation flexible optoelectronic devices.
研究领域:
材料科学
·
纳米技术
·
电子学
·
光电子学
·
高分子科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2019
·
IF 4.784
Dandan Su,Juan Zhou,Kamel S. Ahmed,Qiaoqiao Ma,Guozhong Lv,Jinghua Chen
In this work, a conductive film consisted of polypyrrole-heparin-collagen (PHC film) was fabricated as a potential neural scaffold. Heparin was initially modified with pyrrole, which was further polymerized with pyrrole monomer under the catalysis of ferric trichloride. Then collagen was added and crosslinked through amide bond, as well as physical interaction with pyrrole through hydrogen bond. In this system, heparin and collagen contributed to improving the biocompatibility, because they were the major component of the extracellular matrix. Additionally, heparin was verified to promote nerve cells growth. The physicochemical properties of PHC film were verified, including structure, morphological analysis, degradation, swelling, electrical properties and so on. Combined with the promotion results of pheochromocytoma cells growing, this PHC film is expected to be a promising alternative for nerve regeneration.
研究领域:
生物材料学
·
神经科学
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Ou Hai,Zechuan Qi,Yuanting Wu,Qiubo Xie,Qiang Ren,Xiulan Wu,Peng Zheng,Tong Li
De-icing represents a significant of application areas for electrothermal materials. However, the primary focus is on the heating performance of electric heating materials, but the ability of materials to handle liquids is rarely mentioned. Consequently, developing a electrothermal material that can simultaneously exhibit liquid-conducting and de-icing capabilities represents a novel research direction. Silica porous ceramics (porosity, water absorption, oil absorption in the ranges of 62 %, 123 %, and 143 %, respectively) were prepared using the sacrificial template method with glass powder and diatomaceous earth as raw materials and PMMA and starch as pore-forming agents. Continuous conductive film networks of poly (3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT:PSS) and antimony-doped tin oxide (ATO) are prepared inside the silica porous ceramics by dip-coating method. By controlling the times of dip-coating, the electrical conductivity of the composites was modulated, the minimum resistance is 9.52 Ω mm. The material has merit electric heating ability, which can be heated from room temperature to 210 °C at 3 V DC in 35 s. Furthermore, the porous ceramic material retained good liquid passage properties after dip-coating with the conductive film. The developed electrothermal porous ceramic materials have the potential for application in the field of electrothermal de-icing.
CAS / MDL:
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
Micromachines
·
2020
·Vol. 11
·期 12
·1027
·
IF 2.524
Jianjun Yang,Wei Zeng,Yaxin Li,Zichuan Yi,Guofu Zhou
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.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
Materials Research Express
·
2017
·Vol. 4
·期 7
·075052
·
IF 1.068
Bowen Lei,Jie Wang,Yongguo Du,Kaili Zhang
Silver nanowires (Ag NWs) of different aspect ratios have emerged as promising materials toward manufacturing optoelectronic devices for various applications. We report herein a facile, polyol-based one-pot strategy that has allowed us to synthesize Ag NWs ranging in length from 4–7 to 20–34 µm and diameter of 49 ± 10 nm, by simply controlling the concentration of MnCl2 and KBr. The kinetics of Ag+ converted to Ag0 have been thoroughly investigated, revealing that the introduction of MnCl2 and KBr plays a key role toward the growing of Ag NWs with a high aspect ratio. Cl− and Br− would significantly influence the reaction rate of Ag+ as well as the reaction activation energy, which controls the nucleation, seeding and growth process of Ag NWs. In addition, MnCl2 and KBr promote an efficient conversion of Ag+ and thus, productivity of Ag NWs up to 90% and 70%, respectively. Without further post-treatment, the conductive film made of this Ag NWs on glass had a sheet resistance of 24 Ω/sq and the specular transmittance of it were 92.4%, which proved it is highly potential for optoelectronic applications.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2025
·
IF 4.6
Yongqing Zhang,Jiahang Zhou,Lingui Hu,Yunbo Li
Silver nanowires (AgNWs) films are a promising alternative to indium tin oxide (ITO) as transparent conductors, but their adhesion and thermal stability are limited. We prepared a transparent conductive film by bonding PEDOT:PSS with graphene and AgNWs on a hydrophilically treated polyethylene terephthalate (PET) substrate. This improved the film’s thermal stability and reduced resistivity due to enhanced adhesion. The sheet resistance of the flexible AgNWs/GR/PEDOT:PSS composite film decreased to about 20 Ω/sq at approximately 80 % transmittance, with minimal changes after bending tests, indicating good adhesion to PET. The composite film also demonstrated excellent stability under long-term storage and high temperatures (up to 106 °C). Joule heating evaluations revealed an average heating rate of 7.19 °C/s at low bias voltages (6.0–12.0 V), highlighting its potential for flexible transparent heaters in future electric heating devices.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 9
·638
·
IF 4.3
Xiangyun Zha,Depeng Gong,Wanyu Chen,Lili Wu,Chaocan Zhang
Copper nanowires (Cu NWs) are considered a promising alternative to indium tin oxide (ITO) and silver nanowires (Ag NWs) due to their excellent electrical conductivity, mechanical properties, abundant reserves, and low cost. They have been widely applied in various optoelectronic devices. In this study, Cu NWs were synthesized using copper chloride (CuCl 2 ) as the precursor, monoethanolamine (MEA) as the complexing agent, and hydrated hydrazine (N 2 H 4 ) as the reducing agent under strongly alkaline conditions at 60 °C. Notably, this is the first time that MEA has been employed as a complexing agent in this synthesis method for Cu NWs. Through a series of experiments, the optimal conditions for the CuCl 2 –MEA–N 2 H 4 system in Cu NWs synthesis were determined. This study revealed that the presence of amines plays a crucial role in nanowire formation, as the co-ordination of MEA with copper in this system provides selectivity for the nanowire growth direction. MEA prevents the excessive conversion of Cu(I) complexes into Cu 2 O octahedral precipitates and exhibits an adsorption effect during Cu NWs formation. The different adsorption tendencies of MEA at the nanowire ends and lateral surfaces, depending on its concentration, influence the growth of the Cu NWs, as directly reflected by changes in their diameter and length. At an MEA concentration of 210 mM, the synthesized Cu NWs have an average diameter of approximately 101 nm and a length of about 28 μm. To fabricate transparent conductive films, the Cu NW network was transferred onto a polyethylene terephthalate (PET) substrate by applying a pressure of 20 MPa using a tablet press to ensure strong adhesion between the Cu NW-coated mixed cellulose ester (MCE) filter membrane and the PET substrate. Subsequently, the MCE membrane was dissolved by acetone and isopropanol immersion. The resulting Cu NW transparent conductive film exhibited a sheet resistance of 52 Ω sq −1 with an optical transmittance of 86.7%.
研究领域:
材料科学
·
纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOID AND POLYMER SCIENCE
·
2020
·Vol. 299
·期 4
·595-601
·
IF 1.536
Liu Li,Jiang Jianchun,Xu Zhan,Zhou Jiahang,Li Yunbo
Flexible, transparent and conductive films (TCFs) were prepared with silver nanowires (AgNWs) and the conductivity was enhanced via tuning junction resistance between nanowires treated by different surfactants and encapsulated by poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS). The results showed that the conductivity of AgNW TCFs was obviously enhanced after being immersed into surfactant solutions because the AgNWs would approach each other directly after dislocating away from polyvinyl pyrrolidone (PVP) and the junction resistance sharply decreased. Moreover, the transmittance of AgNW TCFs immersed into different surfactant solutions just decreased little because the halogen ions induced the formation of silver nanoparticles on the surface of AgNWs. Besides, the conductivity of AgNW TCFs encapsulated by PEDOT:PSS was also enhanced because the charges can transfer between PEDOT chains and AgNWs with the little decrease of optical transmittance. Graphical abstract The characterization of the electrical properties of AgNW TCFs and AgNWs/PEDOT:PSS films treated by different surfactants (CTAB, CTAC and OTAC).
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Wei Peng,Liting Wang,Mingyu Zhang,Deng-Guang Yu,Xiaoyan Li
Biodegradable conductive films are crucial for the sustainable development of wearable electronics. In this work, a flexible and degradable conductive film was prepared based on a carefully designed interface of polylactic acid (PLA) electrospun fibers and silver nanowires (AgNWs). The amphiphilic triblock copolymer was added to PLA solution for electrospinning, followed by solvent posttreatment to induce the hydrophilic block of the amphiphilic triblock copolymer to migrate to the fiber surface. Dopamine can be uniformly polymerized on the surface of hydrophilic PLA fibers, and the prepared PLA@PDA fiber film can form a good interface combination with AgNWs. The electrical conductivity of AgNWs/PLA@PDA flexible film can reach 258.5 S cm −1 , showing obvious Joule heating effect and good mechanical properties. Degradation experiments showed that in phosphate buffered saline , the PLA molecular chain showed a dynamic equilibrium due to the scission and rearrangement of the ester groups and degraded slowly, while AgNWs/PLA@PDA degraded rapidly under alkaline conditions. Our study provides a simple and controllable method to prepare flexible degradable electronic films, which is expected to be applied to flexible wearable bioelectrodes.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Weimin Yan,Chengmin Hou
Flexible electronics demand conductive films with high stability and conductivity. However, silver nanowires (AgNWs) face challenges like agglomeration and inconsistent morphology. In this study, AgNWs were synthesized via a two-step process: (1) preliminary growth using a glass fiber template and polyol method (diameter: 0.2–0.4 μm, length: 1–6 μm), and (2) secondary growth by mixing AgNWs with PVA solution followed by heat treatment. The secondary growth enhanced nanowire dimensions (diameter: 5–7 μm, length: 100–200 μm) and conductivity. The optimized film exhibited stable resistance (4 MΩ) after 5000 bends (90° and 180°) and achieved optimal performance at 100 °C/30 min. This method provides a scalable solution for flexible electronics.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2021
·
IF 4.094
Shah Fahad,Haojie Yu,Li Wang,Jinhua Liu,Songbiao Li,Junchao Fu,Bilal Ul Amin,Rizwan Ullah Khan,Sahid Mehmood,Fazal Haq,Wang Nan,Muhammad Usman
Silver nanowires (AgNWs) have attracted growing interest because of their wide range of applications in modern nano electronic appliances. During polyol method, the presence of cations and anions in the reaction solution has influence on the final morphology of AgNWs. Here we report a feasible way to prepare AgNWs by polyol method. Copper bromide (CuBr 2 ) salt was used to provide anions and cations in the reaction solution. The anions (Br − ) helps in reducing the amount of free Ag + by forming silver bromide (AgBr) during initial silver seeds formation and the cations scavenge oxygen from the surface of AgNWs during preferential growth of the AgNWs. Ethylene glycol (EG) was used as a solvent and reducing agent, silver nitrate (AgNO 3 ) was used as Ag source and polyvinyl pyrrolidone (PVP) was used as a capping agent. The effects of various factors which influence the final morphology of AgNWs were studied. AgNWs were successfully synthesized in the presence of CuBr 2 salt. The morphology of the synthesized AgNWs was characterized by the SEM and TEM. The crystallinity was characterized by HRTEM, SAED and XRD . The LSPR peaks of Ag nanostructures were revealed by UV–Vis spectroscopy. The conductive properties of AgNWs thin conductive films were studied by coating the synthesized nanowires on polyethylene terephthalate (PET) substrate.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2019
·Vol. 44
·期 3
·780-790
·
IF 3.069
Hui Zhao,Wenming Geng,Wei-Wei Cao,Jian-Gong Wen,Tao Wang,Ying Tian,Li-Chao Jing,Xiao-Tong Yuan,Ze-Ru Zhu,Hong-Zhang Geng
Carbon nanotubes (CNTs) and graphene oxide (GO) were sprayed on flexible polyethylene terephthalate (PET) substrates to prepare CNT and GO–CNT transparent conductive films (TCFs). For the GO–CNT TCFs, when the mass ratio of GO to CNTs was 0.2, a relatively low sheet resistance of 90.4 Ω sq−1 at a transmittance of 87% (550 nm) was obtained with an average σdc/σopt value of 28.9. Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) solution without or with ethylene glycol (EG) added was sprayed on the surface of the GO–CNT films to obtain P/GO–CNT and P(E)/GO–CNT films, respectively. P(E)/GO–CNT films were post-treated with sulfuric acid to obtain P(E,S)/GO–CNT TCFs. The addition of PEDOT:PSS can permeate into the pores of networks and densify the GO–CNT networks, increasing the conductivity and wettability and decreasing the roughness of the films. Additional EG can reduce the Coulomb force between PEDOT and PSS and change the morphology of PEDOT, and at the same time sulfuric acid treatment can effectively remove PSS from the PEDOT:PSS layer. The P(E,S)/GO–CNT 0.2 TCFs exhibited a sheet resistance of 46.3 Ω sq−1 at a transmittance of 87.5% (550 nm) with an average σdc/σopt value of 56.1. The organic light emitting diodes were successfully fabricated, and the mechanism of how the electrical conductivity of the hybrid film increased was also investigated.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）