Facile fabrication of super-hydrophilic porous graphene with ultra-fast spreading feature and capillary effect by direct laser writing

Liu, Junbo; Liu, Huilong; Lin, Na; Xie, Yingxi; Bai, Shigen; Zhao, Lin; Lu, Longsheng; Tang, Yong

doi:10.1016/j.matchemphys.2020.123083

Cited by 14 publications

(7 citation statements)

References 39 publications

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“…Next, we examined and engineered the wicking properties of our channel architectures in various flow configurations, since effective wetting within the porous LIG-E structure is essential to maximizing electrode utilization for sensing applications. The wetting properties of laser-pyrolyzed polyimide can be tuned by control of the lasing atmosphere ( 42), KMnO4 pre-treatment (43), and post-modifications (44). In our cellulose systems, we found that the laser-pyrolyzed electrodes are always superhydrophilic, completely absorbing a water droplet within < 50 ms.…”

Section: Engineering Anisotropic Capillary-flow Propertiesmentioning

confidence: 87%

Paper-based laser-pyrolyzed electrofluidics: an electrochemical platform for capillary-driven diagnostic bioassays

Bezinge

Lesinski

Suea‐Ngam

et al. 2023

Preprint

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Microfluidic paper-based analytical devices (uPADs) are indispensable tools for disease diagnostics. The integration of electronic components into uPADs enables new device functionalities and facilitates the development of complex quantitative assays. Unfortunately, current electrode fabrication methods often hinder capillary flow, considerably restricting uPAD design architectures. Here, we present laser-induced graphenization as an approach to fabricate porous electrodes embedded into cellulose paper. The resulting electrodes not only have high conductivity and electrochemical activity, but also retain wetting properties for capillary transport. We demonstrate paper-based electrofluidics, including (i) a lateral flow device for injection analysis of alkaline phosphatase in serum and (ii) a vertical flow device for quantitative detection of HPV16 with a CRISPR-based assay. We expect that this platform will streamline the development of diagnostic devices that combine the operational simplicity of colorimetric lateral flow tests with the added benefits and possibilities offered by electronic signaling.

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Section: Engineering Anisotropic Capillary-flow Propertiesmentioning

confidence: 87%

Paper-based laser-pyrolyzed electrofluidics: an electrochemical platform for capillary-driven diagnostic bioassays

Bezinge

Lesinski

Suea‐Ngam

et al. 2023

Preprint

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“…However, these doping strategies are affected by strict conditions and sophisticated equipment, as well as being inefficient, high cost, and environmentally unfriendly. Recently, laser doping achieved by rapid and localized heating approaches has been widely used in flexible devices, including in-plane MSCs, owing to its advantages of simplicity, easy operation, high efficiency, and high resolution. ,,,− In 2015, Peng et al reported a facile and robust laser-induced process to fabricate boron-doped LIG (B-LIG) interdigital in-plane MSCs from PI/boric acid (H 3 BO 3 ) composite films, wherein the composite films were realized by dissolving H 3 BO 3 into PAA solution and then hot pressing into films, as shown in Figure A. The successful boron-doped LIG can be verified from the XPS B 1s spectra in Figure B.…”

Section: Laser Processing Techniques For In-plane Mscsmentioning

confidence: 99%

Laser Processing of Flexible In-Plane Micro-supercapacitors: Progresses in Advanced Manufacturing of Nanostructured Electrodes

et al. 2022

Self Cite

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Flexible in-plane architecture micro-supercapacitors (MSCs) are competitive candidates for on-chip miniature energy storage applications owing to their light weight, small size, high flexibility, as well as the advantages of short charging time, high power density, and long cycle life. However, tedious and time-consuming processes are required for the manufacturing of high-resolution interdigital electrodes using conventional approaches. In contrast, the laser processing technique enables high-efficiency high-precision patterning and advanced manufacturing of nanostructured electrodes. In this review, the recent advances in laser manufacturing and patterning of nanostructured electrodes for applications in flexible in-plane MSCs are comprehensively summarized. Various laser processing techniques for the synthesis, modification, and processing of interdigital electrode materials, including laser pyrolysis, reduction, oxidation, growth, activation, sintering, doping, and ablation, are discussed. In particular, some special features and merits of laser processing techniques are highlighted, including the impacts of laser types and parameters on manufacturing electrodes with desired morphologies/structures and their applications on the formation of high-quality nanoshaped graphene, the selective deposition of nanostructured materials, the controllable nanopore etching and heteroatom doping, and the efficient sintering of nanometal products. Finally, the current challenges and prospects associated with the laser processing of in-plane MSCs are also discussed. This review will provide a useful guidance for the advanced manufacturing of nanostructured electrodes in flexible in-plane energy storage devices and beyond.

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“…There are many methods reported for the fabrication of graphene and its derived materials by incorporating lasers other than PLAL method [ 120 , 121 , 122 , 123 , 124 , 125 , 126 , 127 ]. Fabrication applications include the fabrication of electrodes for batteries [ 128 , 129 ], supercapacitors [ 130 , 131 , 132 ], resistive switching memory devices [ 133 ], micro-capacitors [ 134 , 135 ], paper-based liquid sensors [ 136 ], super-hydrophilic porous membranes [ 137 , 138 ], and 1D fiber electronics [ 139 ]. Moreover, graphene and lasers were used for signal enhancement for laser-induced breakdown spectroscopy [ 140 ].…”

Section: Applications Of Plal Graphene Nanostructuresmentioning

confidence: 99%

Graphene Nanostructures by Pulsed Laser Ablation in Liquids: A Review

Al-Tuwirqi

2022

Materials

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High-quality graphene has demonstrated remarkable mechanical, thermal, electronic, and optical properties. These features have paved the road for the introduction of graphene into numerous applications such as optoelectronics and energy devices, photodegradation, bioimaging, photodetectors, sensors, and biosensors. Due to this, graphene research has accelerated exponentially, with the aim of reaching a sustainable large-scale production process of high-quality graphene that can produce graphene-based technologies at an industrial scale. There exist numerous routes for graphene fabrication; however, pulsed laser ablation in liquids (PLAL) has emerged as a simple, fast, green, and environmentally friendly method as it does not require the use of toxic chemicals. Moreover, it does not involve the use of expensive vacuum chambers or clean rooms. However, the great advantage of PLAL is its ability to control the size, shape, and structure of the produced nanostructures through the choice of laser parameters and liquid used. Consequently, this review will focus on recent research on the synthesis of graphene nanosheets and graphene quantum dots via PLAL and the effect of experimental parameters such as laser wavelength, pulse width, pulse energy, repetition rate, irradiation time, and liquid media on the produced nanostructures. Moreover, it will discuss extended PLAL techniques which incorporate other methods into PLAL. Finally, different applications that utilize nanostructures produced by PLAL will be highlighted. We hope that this review will provide a useful guide for researchers to further develop the PLAL technique and the fabrication of graphene-based materials.

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Facile fabrication of super-hydrophilic porous graphene with ultra-fast spreading feature and capillary effect by direct laser writing

Cited by 14 publications

References 39 publications

Paper-based laser-pyrolyzed electrofluidics: an electrochemical platform for capillary-driven diagnostic bioassays

Paper-based laser-pyrolyzed electrofluidics: an electrochemical platform for capillary-driven diagnostic bioassays

Laser Processing of Flexible In-Plane Micro-supercapacitors: Progresses in Advanced Manufacturing of Nanostructured Electrodes

Graphene Nanostructures by Pulsed Laser Ablation in Liquids: A Review

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