Dry aerosol jet printing of conductive silver lines on a heated silicon substrate

Ефимов, А. А.; Arsenov, Pavel V.; Protas, N V; Min’kov, K. N.; Urazov, Maxim; Иванов, В. В.

doi:10.1088/1757-899x/307/1/012082

Cited by 14 publications

(11 citation statements)

References 7 publications

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“…This temperature range is probably responsible for the beginning of the stage of the sintering process of nanoparticles, at which contacts and necks between nanoparticles begin to form. Moreover, it can also be seen from the graph in Figure 2a that the complete sintering of nanoparticles occurs in the temperature range from 300 to 500 • C, where the line electrical resistivity reaches minimum values of the order of~2.3 µΩ•cm and then ceases to change with increasing substrate temperature [39,40]. In the SEM image of the surface of the line heat-treated at 400 • C, it can be seen that the line consists of a bulk monolitized material with a certain number of micro-sized pores formed during sintering of nanoparticles.…”

Section: Resultsmentioning

confidence: 84%

Aerosol Jet Printing of Silver Lines with A High Aspect Ratio on A Heated Silicon Substrate

et al. 2020

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In this work, we studied the formation of conductive silver lines with high aspect ratios (AR = thickness/width) > 0.1 using the modernized method of aerosol jet printing on a heated silicon substrate. The geometric (AR) and electrical (resistivity) parameters of the formed lines were investigated depending on the number of printing layers (1–10 layers) and the temperature of the substrate (25–300 °C). The AR of the lines increased as the number of printing layers and the temperature of the substrate increased. An increase in the AR of the lines with increasing substrate temperature was associated with a decrease in the ink spreading as a result of an increase in the rate of evaporation of nano-ink. Moreover, with an increase in the substrate temperature of more than 200 °C, a significant increase in the porosity of the formed lines was observed, and as a result, the electrical resistivity of the lines increased significantly. Taking into account the revealed regularities, it was demonstrated that the formation of silver lines with a high AR > 0.1 and a low electrical resistivity of 2–3 μΩ∙cm is advisable to be carried out at a substrate temperature of about 100 °C. The adhesion strength of silver films formed on a heated silicon substrate is 2.8 ± 0.9 N/mm2, which further confirms the suitability of the investigated method of aerosol jet printing for electronic applications.

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Section: Resultsmentioning

confidence: 84%

Aerosol Jet Printing of Silver Lines with A High Aspect Ratio on A Heated Silicon Substrate

et al. 2020

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“…This is why dry aerosol printing [ 34 ], which avoids the processes of interaction of liquids with paint layers, is suggested to be a promising technology for developing nanostructures on the surface of paintings and dyes. Aerosol metal nanoparticles produced in a gas discharge generator [ 35 , 36 ] can be used as a source for the formation of nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Aerosol Dry Printing for SERS and Photoluminescence-Active Gold Nanostructures Preparation for Detection of Traces in Dye Mixtures

et al. 2022

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We proposed a novel method of nanostructure preparation for observation of surface-enhanced Raman spectroscopy (SERS) and metal-enhanced fluorescence (MEF) based on the deposition of gold nanoparticles (GNPs) above the thin dye film by dry aerosol printing. We detected various enhanced SERS and MEF signals of films of malachite green (MG) and rhodamine B (RhB) mixtures, depending on the surface packing density of Au NPs on the strip, and found the optimum one to achieve the 3.5 × 105 SERS enhancement. It was shown that statistical methods of chemometrics such as projection on latent structures provided the opportunity to distinguish SERS of MG from 100 ppm RhB in a mixture, whereas separation of MEF signals are feasible even for a mixture of MG and 1 ppm RhB due to two-photon excitation.

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“…The dual-material process allowed for deposition of nanocomposite structures as well as real-time control of the properties of the deposited structures. In a research work by Efimov et al, the AJP process was integrated with a spark discharge generator with the aim to deposit dry silver nanoparticles (15-100 nm in diameter) on heated silicon [31] and glass [32] substrates. As a result, this process does not require postdeposition sintering.…”

Section: Introductionmentioning

confidence: 99%

A Computational Fluid Dynamics Investigation of Pneumatic Atomization, Aerosol Transport, and Deposition in Aerosol Jet Printing Process

Salary

Lombardi

Weerawarne

et al. 2021

Journal of Micro and Nano-Manufacturing

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Aerosol jet printing (AJP) is a direct-write additive manufacturing technique, which has emerged as a high-resolution method for the fabrication of a broad spectrum of electronic devices. Despite the advantages and critical applications of AJP in the printed-electronics industry, the AJP process is intrinsically unstable, complex, and prone to unexpected gradual drifts, which adversely affect the morphology and consequently the functional performance of a printed electronic device. Therefore, in situ process monitoring and control in AJP is an inevitable need. In this respect, in addition to experimental characterization of the AJP process, physical models would be required to explain the underlying aerodynamic phenomena in AJP. The goal of this research work is to establish a physics-based computational platform for prediction of aerosol flow regimes and ultimately, physics-driven control of AJP process. In pursuit of this goal, the objective is to forward a 3D compressible, turbulent, multi-phase CFD model to investigate the aerodynamics behind: (i) aerosol generation, (ii) aerosol transport, and (iii) aerosol deposition on a moving free surface in the AJP process. The complex geometries of the deposition head as well as the pneumatic atomizer were modeled in the ANSYS-Fluent environment, based on patented designs and also accurate measurements, obtained from 3D X-ray computed tomography (CT) imaging. The entire volume of the constructed geometries was subsequently meshed, using a mixture of smooth and soft quadrilateral elements, with consideration of layers of inflation to obtain an accurate solution near the walls. A combined approach - based upon the density-based and pressure-based Navier-Stokes formation - was adopted to obtain steady-state solutions and to bring the conservation imbalances below a specified linearization tolerance (i.e., ?10?^(-6)). Turbulence was modeled, using the realizable k-? viscous model with scalable wall functions. A coupled two-phase flow model was, in addition, set up to track a large number of injected particles. The boundary conditions were defined based on experimental sensor data, recorded from the AJP setup. The accuracy of the model was validated using a factorial experiment, composed of AJ-deposition of silver nanoparticles on a polyimide substrate. The outcomes of this study pave the way for the implementation of physics-driven in situ control of AJP.

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Dry aerosol jet printing of conductive silver lines on a heated silicon substrate

Cited by 14 publications

References 7 publications

Aerosol Jet Printing of Silver Lines with A High Aspect Ratio on A Heated Silicon Substrate

Aerosol Jet Printing of Silver Lines with A High Aspect Ratio on A Heated Silicon Substrate

Aerosol Dry Printing for SERS and Photoluminescence-Active Gold Nanostructures Preparation for Detection of Traces in Dye Mixtures

A Computational Fluid Dynamics Investigation of Pneumatic Atomization, Aerosol Transport, and Deposition in Aerosol Jet Printing Process

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