Papers by Keyword: Silver Nanowire

Abstract: Transparent flexible electrodes (TFEs) are extremely crucial for expanding flexible and wearable electronic devices. Silver nanowires (AgNWs) have been extensively investigated as an alternative to replace Indium Tin Oxide (ITO) as a commercial TFE due to their high conductivity, transparency, and flexibility. AgNWs have replaced ITO-based electrodes as the preferred approach in flexible, transparent, and conductive electrodes (FTCE). AgNWs outperform other materials, such as Reduced Graphene Oxide (RGO), ceramic material, Carbon Nanotubes (CNT), and conductive polymers, in terms of electrical conductivity, transmittance, flexibility, and low sheet resistance. Numerous techniques, including as electrospinning, spray coating, spin coating, and doctor blades, are used to use AgNWs as flexible substrates. Seed-based growth and template-assisted synthesis are two fundamental synthesis techniques that could be used to generate AgNWs. However, poor adhesiveness, and thermal and electrical stability, begin to be bottlenecks for AgNWs as high deployment in a variety of devices. So AgNWs synthesis process began to shift to other methods, such as wet chemical and polyol. In this paper, short and clear summary of various advances including post-treatment methods such as UV radiation, microwave, sonication, quenching, and so on is conducted to be one step forward to test mechanical properties and to improve AgNWs performance.

Abstract: Automotive air conditioning (AAC) is essential, particularly in tropical countries like the Philippines, where temperatures can go beyond 40 °C during the summer. AAC system is installed for the comfort and safety of passengers. However, AAC may consume up to 30% of the fuel and increase fuel consumption by up to 20%. Consequently, increasing fuel consumption can lead to high costs and greenhouse emissions worldwide. Commercially available car tints can block harmful ultraviolet (UV) rays but selectively block IR rays which primarily cause heating. Therefore, sustainable cooling solutions must be developed. This study developed a silver nanowire (AgNW)-PVB (polyvinyl butyral) composite spray coating. The coating decreased the transmittance by at least 30% in the UV region and at least 25% in the near-infrared (NIR). Average transmittance in the visible region (Vis) is as much as 63.50% which highly depends on the concentration of PVB and AgNWs. More AgNWs decrease the transmittance at UV, Vis, and NIR regions.

Abstract: In this work, we fabricated a flexible silver nanowires (Ag NWs)/graphene transparent conducting film on polyethylene terephthalate (PET) substrate, which was applied in an electrochromic device. The graphene layer was coated on the surface of the Ag NW film utilizing the electrostatic adsorption in order to improve the stability of the metallic nanowire layer and the performance of the electrochromic device. The Ag NWs/graphene composite film exhibited an optical transmittance of 82.5% at 550 nm and a sheet resistance of 57.5 Ω/sq. With the concentration of the adsorbed graphene increased, the transmittance and conductivity of the composite film both decreased. Furthermore, the lifetime of the electrochromic devices based on the tungsten oxide (WO₃) thin film and the Ag NW/graphene composite electrodes was greatly extended, compared to that utilizing the pristine Ag NW electrodes. The results indicate that the introduction of the graphene layer could protect the Ag NW film from corrosion of the electrolyte layer, and greatly improve the lifetime and cycle numbers of the electrochromic device. Key words: silver nanowire; graphene; transparent electrode; electrochromic devices

Abstract: In this paper, the silver nanowires (AgNWs) were synthesized by polyol process. Then the stretchable conductor was fabricated with a simple, low cost and low energy consuming method. The testing results showed that the synthesized AgNWs were 80 nm in diameter and 3~50 μm in length. Meanwhile, the thickness of AgNWs film was discussed as an effect factor to the resistance stability of stretchable conductor. Finally, through optimizing the thickness of AgNWs film, the stretchable conductor kept relatively stable resistance when the conductor was stretched to 50 times in length. The strain sensor was prepared using stretchable conductor as electrodes showed excellent linearity under a very large strain range and the minimum detectable strain is 0.89%.

Abstract: Silver (Ag) nanostructures, such as nanoparticles and nanowires, were formed by electroless deposition in ethylene glycol at 160 °C for 1h. Polyvinyl pyrrolidone (PVP) were used both as a capping agent and structure-directing agent to prevent agglomeration and promote the growth of Ag nanowires. The effect of its molecular weight and concentration on the morphology of Ag was examined by X-Ray Diffraction (XRD) and scanning electron microscopy (SEM). XRD analysis showed peaks corresponding to the face-centered cubic (FCC) structure of metallic silver. At low PVP molecular weight of 10,000, spherical Ag nanoparticles with a mean diameter of about 170 nm were formed. A mixture of Ag nanoparticles and nanowires were produced when the molecular weight was increased to 55,000 and 360,000.

Abstract: We developed new synthetic method of silver nanowire by reducing silver acetate precursor. Silver acetate could be easily synthesized by ultrasound irradiation to the mixture of non-toxic starting materials, only ethanol and silver (I) oxide. All of reaction was performed in relatively low temperature and it does not need any protective agents. The precursors had high aspect ratio needle-shaped morphology. They decomposed easily by heating up to 300 °C and then produce only silver without any residues. This process is expected to be new synthetic method of silver nanowire that doesn’t require any protective agents and emit much waste.

Abstract: One dimensional nanomaterials are used as the basic and significant parts to fabricate nanodevices. Silver nanowire is a promising conductive particle, which can be used in conductive adhensives. The research is about the effects of the control agents, reaction temperature, and reaction time on the morphology and size of the product. And figure out an effective way to control the nucleation and the morphology of silver nanowires.

Abstract: Silver nanowires in large quantities can be obtained by 5-hydroxy-L-tryptophan through a simple method in the absence of a surfactant and seed. The influences of different experimental parameters on the morphologies of silver nanoproducts in such an environmentally friendly synthesis were investigated. Different molar ratio of reactants which can results different size and shape of silver nanoparticles. The high temperature, the acid or alkaline condition is not to facilitate formation of the nanowires. This simple and eco-friendly preparation method of silver nanowires can decrease the synthetic cost and broaden the research and application areas of silver nanowires.

Abstract: Recently,research of surface plasmon polaritons in metal has been hot.in this paper, we study the surface plasmon polaritons modes in silver nanowire, explore the way of different excitations affect modes. and explore the impact of different physical parameters for the mode ratio.

Abstract: ABSTRACT Silver nanowires have been synthesized by polyol process with ethylene glycol as solvent and PVP as capping agent. The silver nanowires have been characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDX), and Transmission electron microscope (TEM) techniques. The prepared silver nanowires were found to exhibit face-centered cubic (fcc) structure. The diameter of the prepared silver nanowires have been found to lie in the range of 60 - 80 nm and the length of the wires have been observed to be in the range of 10-20 µm. The I-V characteristics have been carried out to study the conducting behavior of the prepared silver nanowires.