Room temperature sintering of printer silver nanoparticle conductive ink

Corsino, Dianne; Balela, Mary Donnabelle L.

doi:10.1088/1757-899x/264/1/012020

Cited by 25 publications

(20 citation statements)

References 15 publications

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“…XRD spectra of green-prepared Ag NPs and Ag/RGO NCs are given in Figure 3 A. The five distinct diffraction peaks at 2θ = 38.16, 44.32, 64.52, 77.45, and 81.59 correspond to the crystal planes (111), (200), (220), (311), and (222), respectively, for the Ag/RGO NCs, which occurs with the face-centred cubic structure of metallic Ag (JCPDS card no.04-0783) [ 44 ]. The incorporation of RGO did not alter the original structure of metallic Ag as all the peaks of Ag/RGO NCs were similar to those of pure Ag NPs [ 45 ].…”

Section: Resultsmentioning

confidence: 99%

A Novel Green Preparation of Ag/RGO Nanocomposites with Highly Effective Anticancer Performance

et al. 2021

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The efficacy of current cancer therapies is limited due to several factors, including drug resistance and non-specific toxic effects. Due to their tuneable properties, silver nanoparticles (Ag NPs) and graphene derivative-based nanomaterials are now providing new hope to treat cancer with minimum side effects. Here, we report a simple, inexpensive, and eco-friendly protocol for the preparation of silver-reduced graphene oxide nanocomposites (Ag/RGO NCs) using orange peel extract. This work was planned to curtail the use of toxic chemicals, and improve the anticancer performance and cytocompatibility of Ag/RGO NCs. Aqueous extract of orange peels is abundant in phytochemicals that act as reducing and stabilizing agents for the green synthesis of Ag NPs and Ag/RGO NCs from silver nitrate and graphene oxide (GO). Moreover, the flavonoid present in orange peel is a potent anticancer agent. Green-prepared Ag NPs and Ag/RGO NCs were characterized by UV-visible spectrophotometry, transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and dynamic light scattering (DLS). The results of the anticancer study demonstrated that the killing potential of Ag/RGO NCs against human breast cancer (MCF7) and lung cancer (A549) cells was two-fold that of pure Ag NPs. Moreover, the cytocompatibility of Ag/RGO NCs in human normal breast epithelial (MCF10A) cells and normal lung fibroblasts (IMR90) was higher than that of pure Ag NPs. This mechanistic study indicated that Ag/RGO NCs induce toxicity in cancer cells through pro-oxidant reactive oxygen species generation and antioxidant glutathione depletion and provided a novel green synthesis of Ag/RGO NCs with highly effective anticancer performance and better cytocompatibility.

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Section: Resultsmentioning

confidence: 99%

A Novel Green Preparation of Ag/RGO Nanocomposites with Highly Effective Anticancer Performance

et al. 2021

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“…Thus, sintering of the nanoparticles is typically necessary to achieve low resistivity. Generally, high temperature treatment is used for sintering, but heat‐sensitive substrates such as paper and medical films can be damaged during this process . There are different methods to achieve low‐temperature sintering including plasma, microwaves, and laser; but all these require specialized equipment making them unsuitable and expensive for on‐demand printing of heat pads.…”

Section: Resultsmentioning

confidence: 99%

“…Generally, high temperature treatment is used for sintering, but heat-sensitive substrates such as paper and medical films can be damaged during this process. [29] There are different methods to achieve low-temperature sintering including plasma, microwaves, and laser; but all these require specialized equipment making them unsuitable and expensive for on-demand printing of heat pads. Instead, chemical approaches are capable of instant sintering without any post-treatment after printing.…”

Section: Introductionmentioning

confidence: 99%

On‐Demand Printing of Wearable Thermotherapy Pad

Moon

Plečkaitytė

Choi

et al. 2020

Adv Healthcare Materials

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Thermotherapy is an effective method for pain relief, recovery from injury, and general healthcare. The ordinary heat pad used for thermotherapy at home is not usually tailored to the individual but supplied in a few different pre‐fixed sizes and shapes for mass marketing. A customized wearable heat pad often requires expert support. Herein, an instant, custom‐fit, and on‐demand heat pad for thermotherapy is demonstrated. The heater is directly printed using silver nanoparticle ink on an off‐the‐shelf medical grade tape by inkjet technology. By coating the tape with silica nanoparticles as ink‐absorbing layer and chloride ions as chemical sintering agent, stable heater patterns are printed without the need for subsequent high temperature sintering process. A 3D scanner is used to acquire body information, and a customized heater is produced using the information. The printed heat pad is attached to the shoulder and the effect of thermotherapy is verified objectively through electroencephalography and subjectively through survey. This printed heat pad produced by simple and low‐cost fabrication provides wearable medical devices for personal thermotherapy.

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“…Therefore, the development of alternative sintering methods focusing mainly on avoiding the destruction of the flexible substrate and enabling fast and efficient fabrication of conductive coatings has attracted great interest in recent years [ 11 , 12 ]. As promising approaches, chemical- [ 13 , 14 ] and radiation-induced [ 15 , 16 ] sintering methods have been considered.…”

Section: Introductionmentioning

confidence: 99%

Effect of Oxalic Acid Treatment on Conductive Coatings Formed by Ni@Ag Core–Shell Nanoparticles

et al. 2022

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Low-cost metallic nanoink based on nickel–silver core–shell nanoparticles (Ni@Ag NPs) was used for the formation of conductive metallic coatings with low sintering temperature, which can be successfully applied for replacement of currently used silver-based nanoinks in printed electronics. The effect of oxalic acid (OA) on the sintering temperature and conductivity of coatings formed by Ni@Ag NPs was evaluated. It was found that the addition of OA to the ink formulation and post-printing treatment of deposited films with this acid provided a noticeable decrease in the sintering temperature required for obtaining conductive patterns that is especially important for utilizing the polymeric substrates. The obtained resistivity of metallic coatings after sintering at temperature as low as 100 °C was found to be 30 µΩ·cm, only ~4 times higher compared to the resistivity of bulk Ni that is promising for future application of such materials for fabrication of low-cost flexible printed patterns.

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Room temperature sintering of printer silver nanoparticle conductive ink

Cited by 25 publications

References 15 publications

A Novel Green Preparation of Ag/RGO Nanocomposites with Highly Effective Anticancer Performance

A Novel Green Preparation of Ag/RGO Nanocomposites with Highly Effective Anticancer Performance

On‐Demand Printing of Wearable Thermotherapy Pad

Effect of Oxalic Acid Treatment on Conductive Coatings Formed by Ni@Ag Core–Shell Nanoparticles

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