Investigation of micro/nano formation mechanism of porous graphene induced by CO2 laser processing on polyimide film

Bai, Shigen; Tang, Yong; Lin, Lihui; Ruan, Luoyuan; Song, Ruixuan; Chen, Huanjian; Du, Yu; Lin, Hongyu; Shan, Yufeng; Tang, Yanru

doi:10.1016/j.jmapro.2022.10.037

Cited by 10 publications

(7 citation statements)

References 36 publications

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“…The SWV operating parameters employed in the PAR analysis were fully optimized by univariate experiments, employing 75.0 μmol L −1 PAR in 0.2 mol L −1 buffer PB (pH 7.0). The optimized parameters were step potential ranging from 1 to 9 mV (1, 2, 3, 4, 5, 6, 7, 8, and 9 mV), amplitude of 10−100 mV (10,20,30,40,50,60, 70, 80, 90, and 100 mV), and frequency from 5 to 35 Hz (5,10,15,20,25,30 and 35 Hz). The selected values were as follows: potential increment: 5 mV, amplitude: 100 mV, and frequency: 10 Hz.…”

Section: Electrochemical Detection Of Paracetamolmentioning

confidence: 99%

“…In the environmental sense, CO 2 laser pyrolysis is a dry process that does not require solvents or generate waste products. 19,20 Using fallen leaves as a substrate and carbon source for developing electrochemical sensors using laser pyrolysis represents a major step toward the development of highperformance, eco-friendly, and cost-effective sensors.…”

Section: Introductionmentioning

confidence: 99%

“…The use of CO 2 lasers to create electrochemical sensors is an approach that has several advantages over traditional sensor manufacturing methods. , In this process, a CO 2 laser is used to selectively remove or burn material from a substrate, creating conductive patterns and structures on the surface that can be used to create electrodes or other sensor components. , It can be used to create sensors from a wide range of materials, including metals, ceramics, and polymers, , patterning complex structures, reproducibly, over substrates. In the environmental sense, CO 2 laser pyrolysis is a dry process that does not require solvents or generate waste products. , Using fallen leaves as a substrate and carbon source for developing electrochemical sensors using laser pyrolysis represents a major step toward the development of high-performance, eco-friendly, and cost-effective sensors.…”

Section: Introductionmentioning

confidence: 99%

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Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO₂ Laser

Blasques,

Camargo,

Veloso

et al. 2024

ACS Sustainable Chem. Eng.

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The use of materials from nature to prepare sensors is a challenge, once we can generate great value with respect to the environment. In this regard, the carbonization of several types of substrates through the utilization of a CO 2 laser promotes the fabrication of exceptional electrochemical sensors that exhibit different architectures, all while adhering to the principles of ecofriendliness and cost-efficiency. In this context, the pursuit of novel substrates derived from renewable sources, characterized by their accessibility and wide availability, is important in the advancement of cutting-edge electrochemical sensors. In this scenario, the study into the utilization of fallen tree leaves is presented for the first time, capitalizing on the pyrolytic transformation induced by a CO 2 laser, to fabricate electrochemical sensors. During the sensor fabrication process, the parameters of the CO 2 laser, including laser power, pyrolysis scan rate, and scan gap, are systematically adjusted to attain optimal outcomes. The proposed sensors were characterized through electrochemical, morphological, and physicochemical methodologies, thereby enabling an exhaustive exploration of the novel carbonized surface generated on the leaves. Also, to underscore the applicability of the sensors, they have been employed in the detection of dopamine and paracetamol in biological and pharmaceutical samples. The applications of this system show a linear range of 10−1200 μmol L −1 for dopamine and 5.0−100.0 μmol L −1 for paracetamol, with limits of detection of 1.1 and 0.76 μmol L −1 , respectively. In this manner, electrochemical sensors derived from fallen tree leaves exhibit satisfactory analytical performance and remarkable reproducibility, thus highlighting their substantial potential to replace conventional substrates.

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Section: Electrochemical Detection Of Paracetamolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO₂ Laser

Blasques,

Camargo,

Veloso

et al. 2024

ACS Sustainable Chem. Eng.

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“…The smallest sheet resistance of the as-prepared LIG samples (as low as 4.5 Ω per square) was also obtained under a laser power of 0.9 W. Comprehensively analyzing the results of the ID/IG intensity ratios and the sheet resistances of the as-prepared LIG samples, the optimal LIG sample can be acquired at a laser power of 0.9 W. The surface morphology of the LIG sample at a lower laser power of 0.3 W is shown in Figure S1a. The high temperature generated by the laser breaks the C-H, C=O, C-O, and C-N bonds in PI film [51], forming gaseous products, such as N2, O2, and CH4 [52]. The porous surface structure is caused by gas leakage during the laser scribing process [53,54].…”

Section: Effects Of Laser Power On Laser-induced Graphenementioning

confidence: 99%

“…The electron shielding effect was the best and the quality of the generated lamellar LIG was The surface morphology of the LIG sample at a lower laser power of 0.3 W is shown in Figure S1a. The high temperature generated by the laser breaks the C-H, C=O, C-O, and C-N bonds in PI film [51], forming gaseous products, such as N 2 , O 2 , and CH 4 [52]. The porous surface structure is caused by gas leakage during the laser scribing process [53,54].…”

Section: Effects Of Scanning Speed On Laser-induced Graphenementioning

confidence: 99%

Fabrication of Laser-Induced Graphene Based Flexible Sensors Using 355 nm Ultraviolet Laser and Their Application in Human–Computer Interaction System

Sun,

Zhang,

Liu

et al. 2023

Materials

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In recent years, flexible sensors based on laser-induced graphene (LIG) have played an important role in areas such as smart healthcare, smart skin, and wearable devices. This paper presents the fabrication of flexible sensors based on LIG technology and their applications in human–computer interaction (HCI) systems. Firstly, LIG with a sheet resistance as low as 4.5 Ω per square was generated through direct laser interaction with commercial polyimide (PI) film. The flexible sensors were then fabricated through a one-step method using the as-prepared LIG. The applications of the flexible sensors were demonstrated by an HCI system, which was fabricated through the integration of the flexible sensors and a flexible glove. The as-prepared HCI system could detect the bending motions of different fingers and translate them into the movements of the mouse on the computer screen. At the end of the paper, a demonstration of the HCI system is presented in which words were typed on a computer screen through the bending motion of the fingers. The newly designed LIG-based flexible HCI system can be used by persons with limited mobility to control a virtual keyboard or mouse pointer, thus enhancing their accessibility and independence in the digital realm.

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Highly Efficient Laser Bidirectional Graphene Printing: Integration of Synthesis, Transfer and Patterning

Li,

Zeng,

Zhang

et al. 2024

Small

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Graphene has tremendous potential in future electronics due to its superior force, electrical, and thermal properties. However, the development of graphene devices is limited by its complex, high‐cost, and low‐efficiency preparation process. This study proposes a novel laser bidirectional graphene printing (LBGP) process for the large‐scale preparation of patterned graphene films. In LBGP, a sandwich sample composed of a thermoplastic elastomer (TPE) substrate, carbon precursor powder, and a glass cover is irradiated by a nanosecond pulsed laser. The laser photothermal effect converts the carbon precursor into graphene, with partial graphene sheets deposited directly on the TPE substrate and the remaining transferred to the glass cover via a laser‐induced plasma plume. This method simultaneously prepares two face‐to‐face graphene films in a single laser irradiation, integrating synthesis, transfer, and patterning. The resulting graphene patterns demonstrate good performance in flexible pressure sensing and Joule heating, showcasing high sensitivity (7.7 kPa−1), fast response (37 ms), and good cycling stability (2000 cycles) for sensors, and high heating rate (1 °C s−1) and long‐term stability (3000 s) for heaters. It is believed that the simple, low‐cost, and efficient LBGP process can promote the development of graphene electronics and laser manufacturing processes.

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Investigation of micro/nano formation mechanism of porous graphene induced by CO2 laser processing on polyimide film

Cited by 10 publications

References 36 publications

Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO₂ Laser

Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO₂ Laser

Fabrication of Laser-Induced Graphene Based Flexible Sensors Using 355 nm Ultraviolet Laser and Their Application in Human–Computer Interaction System

Highly Efficient Laser Bidirectional Graphene Printing: Integration of Synthesis, Transfer and Patterning

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Investigation of micro/nano formation mechanism of porous graphene induced by CO2 laser processing on polyimide film

Cited by 10 publications

References 36 publications

Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO2 Laser

Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO2 Laser

Fabrication of Laser-Induced Graphene Based Flexible Sensors Using 355 nm Ultraviolet Laser and Their Application in Human–Computer Interaction System

Highly Efficient Laser Bidirectional Graphene Printing: Integration of Synthesis, Transfer and Patterning

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Product

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Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO₂ Laser

Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO₂ Laser