Morphic transitions of nanocarbons via laser pyrolysis of polyimide films

Tiliakos, Athanasios; Ceaus, C.; Iordache, Stefan Marian; Vasile, Eugeniu; Stamatin, I.

doi:10.1016/j.jaap.2016.08.007

Cited by 78 publications

(61 citation statements)

References 32 publications

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“…The morphic transition helps the manipulation of properties. For example, the LIG changed from hydrophilic to superhydrophobic due to the different surface tension [43]. In addition to PI, other biomaterials or synthetic polymers such as polyetherimide (PEI) [3], wood [12], food [44], and polysulfone (PSU) [37] have also been successfully converted to LIG by multiple stepwise lasing, addition of fire retardant or defocused lasing.…”

Section: Fabrication and Engineering Of Ligmentioning

confidence: 99%

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Laser-Induced Graphene: En Route to Smart Sensing

et al. 2020

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HIGHLIGHTS • Summarizing the strategies for the synthesis and engineering of laser-induced graphene, which is essential for the design of highperformance sensors. • Introducing LIG sensors for the detection of various stimuli with a focus on the design principle and working mechanism. • Discussing the integration of LIG sensors with signal transducers and conveying the prospects of smarting sensing systems to come.

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Section: Fabrication and Engineering Of Ligmentioning

confidence: 99%

“…By changing the radiation energy, operational modes, pulses density, and laser duty cycle, the graphene morphology could vary from sheet to fiber (Fig. 1 d) and to droplets [ 42 ], as well as spherical [ 25 ] and tubular structure [ 43 ]. The morphic transition helps the manipulation of properties.…”

Section: Synthesis Of Ligmentioning

confidence: 99%

Laser-Induced Graphene: En Route to Smart Sensing

et al. 2020

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“…Although LIG electrodes have also been used in supercapacitor (Fig. 2c), their temperature resilience is not compatible as laser scribed carbide 45 . As shown in in Fig.…”

Section: Resultsmentioning

confidence: 99%

Laser-sculptured ultrathin transition metal carbide layers for energy storage and energy harvesting applications

et al. 2019

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Ultrathin transition metal carbides with high capacity, high surface area, and high conductivity are a promising family of materials for applications from energy storage to catalysis. However, large-scale, cost-effective, and precursor-free methods to prepare ultrathin carbides are lacking. Here, we demonstrate a direct pattern method to manufacture ultrathin carbides (MoC x , WC x , and CoC x ) on versatile substrates using a CO 2 laser. The laser-sculptured polycrystalline carbides (macroporous, ~10–20 nm wall thickness, ~10 nm crystallinity) show high energy storage capability, hierarchical porous structure, and higher thermal resilience than MXenes and other laser-ablated carbon materials. A flexible supercapacitor made of MoC x demonstrates a wide temperature range (−50 to 300 °C). Furthermore, the sculptured microstructures endow the carbide network with enhanced visible light absorption, providing high solar energy harvesting efficiency (~72 %) for steam generation. The laser-based, scalable, resilient, and low-cost manufacturing process presents an approach for construction of carbides and their subsequent applications.

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“…At the optimum condition, a high-quality electrode is created at the acceptor while the Ag NP layer is sharply detached from the donor substrate. When the laser power overpasses 400 mW, the acceptor PI film is pyrolyzed and carbonized [32,33] (Figure 2d) to create a highly uneven structure.…”

Section: Resultsmentioning

confidence: 99%

Continuous-Wave Laser-Induced Transfer of Metal Nanoparticles to Arbitrary Polymer Substrates

et al. 2020

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Laser-induced forward transfer (LIFT) and selective laser sintering (SLS) are two distinct laser processes that can be applied to metal nanoparticle (NP) ink for the fabrication of a conductive layer on various substrates. A pulsed laser and a continuous-wave (CW) laser are utilized respectively in the conventional LIFT and SLS processes; however, in this study, CW laser-induced transfer of the metal NP is proposed to achieve simultaneous sintering and transfer of the metal NP to a wide range of polymer substrates. At the optimum laser parameters, it was shown that a high-quality uniform metal conductor was created on the acceptor substrate while the metal NP was sharply detached from the donor substrate, and we anticipate that such an asymmetric transfer phenomenon is related to the difference in the adhesion strengths. The resultant metal electrode exhibits a low resistivity that is comparable to its bulk counterpart, together with strong adhesion to the target polymer substrate. The versatility of the proposed process in terms of the target substrate and applicable metal NPs brightens its prospects as a facile manufacturing scheme for flexible electronics.

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Morphic transitions of nanocarbons via laser pyrolysis of polyimide films

Cited by 78 publications

References 32 publications

Laser-Induced Graphene: En Route to Smart Sensing

Laser-Induced Graphene: En Route to Smart Sensing

Laser-sculptured ultrathin transition metal carbide layers for energy storage and energy harvesting applications

Continuous-Wave Laser-Induced Transfer of Metal Nanoparticles to Arbitrary Polymer Substrates

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