In-Depth Study of Laser Diode Ablation of Kapton Polyimide for Flexible Conductive Substrates

Romero, Francisco J.; Salinas-Castillo, Alfonso; Rivadeneyra, Almudena; Albrecht, Andreas; Godoy, A.; Morales, Diego P.; Rodríguez, Noel

doi:10.3390/nano8070517

Cited by 65 publications

(47 citation statements)

References 51 publications

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“…The feasibility of both CO 2 and UV lasers to induce porous nanographene aggregates from commercial polyimides, and to reduce the GO, has been already proved in several works [6,28,33,34]. However, due to the different nature of the laser beams, not only is the power required to optimize the sheet resistance different, but so are the properties of the material synthetized [39].…”

Section: Resultsmentioning

confidence: 99%

“…The devices were fabricated following the schemas shown in Figure 1. In the case of the LIG-based supercapacitors (Figure 1a), the laser photothermal ablation was carried out directly on the polyimide film ( Figure 1(a-1)), inducing the graphene-derived structures on its surface (Figure 1(a-2)) [33,34]. On the other hand, for the fabrication of LrGO-based electrodes, a PET foil (Figure 1(b-1)) was covered with GO at a concentration of 75 µL/cm 2 ( Figure 1(b-2)).…”

Section: Fabrication Processesmentioning

confidence: 99%

“…The sheet resistance of the graphene-derived patterns was extracted through the Transmission Line Method (TLM) [34]. X-ray Photoelectron Spectroscopy (XPS) analysis was performed using the Katros Axis Ultra-DLD X-ray photoelectron spectrometer (from Kratos Analytical Ltd., Manchester, UK).…”

Section: Characterizationmentioning

confidence: 99%

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Comparison of Laser-Synthetized Nanographene-Based Electrodes for Flexible Supercapacitors

et al. 2020

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In this paper, we present a comparative study of a cost-effective method for the mass fabrication of electrodes to be used in thin-film flexible supercapacitors. This technique is based on the laser-synthesis of graphene-based nanomaterials, specifically, laser-induced graphene and reduced graphene oxide. The synthesis of these materials was performed using two different lasers: a CO2 laser with an infrared wavelength of λ = 10.6 µm and a UV laser (λ = 405 nm). After the optimization of the parameters of both lasers for this purpose, the performance of these materials as bare electrodes for flexible supercapacitors was studied in a comparative way. The experiments showed that the electrodes synthetized with the low-cost UV laser compete well in terms of specific capacitance with those obtained with the CO2 laser, while the best performance is provided by the rGO electrodes fabricated with the CO2 laser. It has also been demonstrated that the degree of reduction achieved with the UV laser for the rGO patterns was not enough to provide a good interaction electrode-electrolyte. Finally, we proved that the specific capacitance achieved with the presented supercapacitors can be improved by modifying the in-planar structure, without compromising their performance, which, together with their compatibility with doping-techniques and surface treatments processes, shows the potential of this technology for the fabrication of future high-performance and inexpensive flexible supercapacitors.

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Section: Resultsmentioning

confidence: 99%

Section: Fabrication Processesmentioning

confidence: 99%

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Comparison of Laser-Synthetized Nanographene-Based Electrodes for Flexible Supercapacitors

et al. 2020

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“…Moreover, flexible electronics open a wide field for innovative wearable devices [14]. New tools in the field of flexible electronics are currently available, such as printed electronics and, more recently, novel nanomaterials [15]- [17].…”

Section: Introductionmentioning

confidence: 99%

Cost-Effective Printed Electrodes Based on Emerging Materials Applied to Biosignal Acquisition

et al. 2020

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In this paper flexible printed electrodes applicable to wearable electronics are presented. Using innovative materials as Laser Induced Graphene (LIG) and printed electronics, three type of electrodes based in LIG, silver chloride and carbon inks have been compared during the acquisition of bipotentials as electrocardiogram, electromyogram and electrooculogram. For this last one, a completely new framework for acquisition have been developed. This framework is based in a printed patch which integers 6 electrodes for the EOG acquisitions and an ad-hoc signal processing to detect the direction and amplitude of the eye movement. The performance of the developed electrodes have been compared with commercial ones using the characteristics parameters of each signal as comparative variables. The results obtained for the flexible electrodes have shown a similar performance than the commercial electrodes with an improvement in the comfort of the user.

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“…Laser direct-writing subtraction method, where the material is photo-removed (e.g., laser scribing [54], photochemical, photothermal, or photophysical ablation [55,56], cutting, drilling, or etching [57]). These techniques offer high-resolution manufacturing as well as the deposition of biomaterials.…”

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confidence: 99%

Recent Advances in Printed Capacitive Sensors

Rivadeneyra

López‐Villanueva

2020

Micromachines

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In this review paper, we summarize the latest advances in the field of capacitive sensors fabricated by printing techniques. We first explain the main technologies used in printed electronics, pointing out their features and uses, and discuss their advantages and drawbacks. Then, we review the main types of capacitive sensors manufactured with different materials and techniques from physical to chemical detection, detailing the main substrates and additives utilized, as well as the measured ranges. The paper concludes with a short notice on status and perspectives in the field.

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In-Depth Study of Laser Diode Ablation of Kapton Polyimide for Flexible Conductive Substrates

Cited by 65 publications

References 51 publications

Comparison of Laser-Synthetized Nanographene-Based Electrodes for Flexible Supercapacitors

Comparison of Laser-Synthetized Nanographene-Based Electrodes for Flexible Supercapacitors

Cost-Effective Printed Electrodes Based on Emerging Materials Applied to Biosignal Acquisition

Recent Advances in Printed Capacitive Sensors

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