Non-planar interconnects in double-sided flexible Cu-PET substrates using a laser-assisted maskless microdeposition process: 3D finite element modeling and experimental analysis

Jabari, Elahe; Tong, Steven; Azhari, Amir; Toyserkani, Ehsan

doi:10.1016/j.optlaseng.2013.10.002

Cited by 16 publications

(5 citation statements)

References 12 publications

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“…Details of the aerosol-jet printing system have already been reported in previous publications of the authors. 81,82 After printing the patterns with 4 deposition layers, the samples were left in the oven at temperatures of 180 °C for 30 min in order to sinter the AgNPs and remove all the solvents from the ink. The resistivity of the printed GQD@AgNP patterns was calculated using the resistance and thickness of the printed patterns measured by a two-probe station and an AFM, respectively.…”

Section: Application: Conductive Ink Using Gqds In Go Dispersionmentioning

confidence: 99%

Single-step synthesis of graphene quantum dots by femtosecond laser ablation of graphene oxide dispersions

et al. 2016

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In the last few years, graphene quantum dots (GQDs) have attracted the attention of many research groups for their outstanding properties, which include low toxicity, chemical stability and photoluminescence. One of the challenges of GQD synthesis is finding a single-step, cheap and sustainable approach for synthesizing these promising nanomaterials. In this study, we demonstrate that femtosecond laser ablation of graphene oxide (GO) dispersions could be employed as a facile and environmentally friendly synthesis method for GQDs. With the proper control of laser ablation parameters, such as ablation time and laser power, it is possible to produce GQDs with average sizes of 2-5 nm, emitting a blue luminescence at 410 nm. We tested the feasibility of the synthesized GQDs as materials for electronic devices by aerosol-jet printing of an ink that is a mixture of water dispersion of laser synthesized GQDs and silver nanoparticle dispersion, which resulted in lower resistivity of the final printed patterns. Preliminary results showed that femtosecond laser synthesized GQDs can be mixed with silver nanoparticle dispersion to fabricate a hybrid material, which can be employed in printing electronic devices by either printing patterns that are more conductive and/or reducing costs of the ink by decreasing the concentration of silver nanoparticles (AgNPs) in the ink.

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Section: Application: Conductive Ink Using Gqds In Go Dispersionmentioning

confidence: 99%

Single-step synthesis of graphene quantum dots by femtosecond laser ablation of graphene oxide dispersions

et al. 2016

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“…where ρ, C p , k and Q are, respectively, the density, the specific heat capacity, the thermal conductivity and the power generation per unit volume. The heat transfer module and the boundary conditions used in Jabari et al [30] were adapted to solve the heat transfer equation.…”

Section: D Finite Element Modellingmentioning

confidence: 99%

“…Among all systems, magnesium-calcium alloys appear as the most promising candidate. Like magnesium, calcium is well tolerated by the body: it is a major element of bones (30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40) wt.% for an adult bone) [10]. Calcium may also promote the healing process with the formation of hydroxyapatite [11,12].…”

Section: Introductionmentioning

confidence: 99%

Selective laser-assisted deposition of silver nanoparticles on a Mg-2wt.%Ca substrate

Jay

Toyserkani

Donnadieu

et al. 2018

J. Phys. D: Appl. Phys.

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Magnesium alloys appear as one of the most promising materials for many applications such as degradable implants. However, their mechanical, corrosion and integration behaviors need to be optimized to comply with this application. The present paper focuses on laser-assisted maskless microdeposition (LAMM) of silver nanoparticles, a surface treatment aiming to modify the surface characteristics for better integration of the magnesium implant. The LAMM process parameters for obtaining desirable depositions are reported. The impacts of the LAMM process on the deposit and the substrate microstructure have been investigated using various characterization techniques. The results show that laser processing, which can lead to particle sintering in the deposit, can be fine-tuned to achieve necking between nano particles, while the nano-scale characteristics of the deposited layer is retained. Microstructural characterization reveals significant grain refinement in the immediate vicinity of the surface, providing evidence for the thermal impact of the laser process on the substrate. The thermal profiles of the deposit and the substrate during processing are further investigated by developing a 3D finite element modelling method. The implementation of the model allows us to better understand the origin of the fine-grained sublayer as well as the overall thermal impact of the current laser processing method on the substrate.

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“…where γ mn , α, and T 0 are shear strain, coefficient of thermal expansion, and initial temperature, respectively. δ mn is the Kronecker delta which is 1 for m = n and 0 for m = n. Consequently, the stress on the domain is represented by [37]:…”

Section: Governing Physicsmentioning

confidence: 99%

A novel fibre Bragg grating sensor packaging design for ultra-high temperature sensing in harsh environments

Azhari¹,

Liang²,

Toyserkani

2014

Meas. Sci. Technol.

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The aim of this article is to introduce a novel packaging of conventional Corning SMF-28 TM single-mode fibre Bragg grating sensors for ultra-high temperature sensing. The package is in a cylindrical shape made of yttria-stabilized zirconia tubes. The fibre optic sensor is epoxied to one end inside the tube to be protected from high external temperatures and also harsh environments. Highly-oriented pyrolytic graphite tube with an exceptional anisotropic thermal conductivity with higher conductivity in transverse than radial direction is positioned around the fibre to protect it from high temperatures. Air cooling system is also provided from the other end to dissipate the transferred heat from inside the tube. The shift in the Bragg wavelength is influenced by the thermal expansion of the package and internal temperature variations, which translates into thermal expansion of the fibre. The modelling and experimental results revealed that the Bragg wavelength shift increases to 1.4 pm • C −1 at higher temperatures with linear behaviour at temperatures above 600 • C. The finite element modelling and the experimental results are also in good proximity indicating the similar trend for the shift in the Bragg wavelength.

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Non-planar interconnects in double-sided flexible Cu-PET substrates using a laser-assisted maskless microdeposition process: 3D finite element modeling and experimental analysis

Cited by 16 publications

References 12 publications

Single-step synthesis of graphene quantum dots by femtosecond laser ablation of graphene oxide dispersions

Single-step synthesis of graphene quantum dots by femtosecond laser ablation of graphene oxide dispersions

Selective laser-assisted deposition of silver nanoparticles on a Mg-2wt.%Ca substrate

A novel fibre Bragg grating sensor packaging design for ultra-high temperature sensing in harsh environments

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