Laser‐Printed, Flexible Graphene Pressure Sensors

Kaidarova, Altynay; Alsharif, Nouf; Oliveira, Barbara Nicoly M.; Marengo, Marco; Geraldi, Nathan R.; Duarte, Carlos M.; Kosel, Jürgen

doi:10.1002/gch2.202000001

Cited by 43 publications

(31 citation statements)

References 30 publications

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“…The effectiveness of LIG in electrochemical applications has been very advantageous in comparison to other conductive elements. Some of the advantages of LIG for these criteria include high electrical conductivity, high porosity, single processing step and avoidance of any wet chemical steps [107,108]. The fabrication of these electrochemical sensors is generally carried out using a range of light-emitting sources in an ambient atmosphere.…”

Section: Use Of Lig-based Sensors For Detection Of Glucose Moleculesmentioning

confidence: 99%

Electrochemical Detection of Glucose Molecules Using Laser-Induced Graphene Sensors: A Review

Gao

Nag

2021

Sensors

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This paper deals with recent progress in the use of laser-induced graphene sensors for the electrochemical detection of glucose molecules. The exponential increase in the exploitation of the laser induction technique to generate porous graphene from polymeric and other naturally occurring materials has provided a podium for researchers to fabricate flexible sensors with high dynamicity. These sensors have been employed largely for electrochemical applications due to their distinct advantages like high customization in their structural dimensions, enhanced characteristics and easy roll-to-roll production. These laser-induced graphene (LIG)-based sensors have been employed for a wide range of sensorial applications, including detection of ions at varying concentrations. Among the many pivotal electrochemical uses in the biomedical sector, the use of these prototypes to monitor the concentration of glucose molecules is constantly increasing due to the essentiality of the presence of these molecules at specific concentrations in the human body. This paper shows a categorical classification of the various uses of these sensors based on the type of materials involved in the fabrication of sensors. The first category constitutes examples where the electrodes have been functionalized with various forms of copper and other types of metallic nanomaterials. The second category includes other miscellaneous forms where the use of both pure and composite forms of LIG-based sensors has been shown. Finally, the paper concludes with some of the possible measures that can be taken to enhance the use of this technique to generate optimized sensing prototypes for a wider range of applications.

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Section: Use Of Lig-based Sensors For Detection Of Glucose Moleculesmentioning

confidence: 99%

Electrochemical Detection of Glucose Molecules Using Laser-Induced Graphene Sensors: A Review

Gao

Nag

2021

Sensors

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“…Coatings generally provide mechanical [396], chemical [397] and weathering [398,399] protection that increases resistance to wear, and this can be achieved through polymeric and smart coatings. Polymeric coatings (e.g., PDMS [400,401], PMMA [179,402] and PVDF [403][404][405]) can form organic thin films onto a substrate to significantly modify surface reactivity towards various elements including corrosion, adhesion, and wear [406]. Likewise, inorganic coatings (e.g., graphene [407], Ag [408] and Au [409]) can modify surface properties providing corrosion and damage protection.…”

Section: Self-protectionmentioning

confidence: 99%

“…The piezoresistive sensing principle is widely used in wearable sensors, including the use of graphene and its derivatives [179,180], CNT and CB [181][182][183], metal NPs and NWs [184,185], conductive polymers [186,187] and MXenes [188,189].…”

mentioning

confidence: 99%

Blood Pressure Sensors: Materials, Fabrication Methods, Performance Evaluations and Future Perspectives

Al-Qatatsheh

Morsi

Zavabeti

et al. 2020

Sensors

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Advancements in materials science and fabrication techniques have contributed to the significant growing attention to a wide variety of sensors for digital healthcare. While the progress in this area is tremendously impressive, few wearable sensors with the capability of real-time blood pressure monitoring are approved for clinical use. One of the key obstacles in the further development of wearable sensors for medical applications is the lack of comprehensive technical evaluation of sensor materials against the expected clinical performance. Here, we present an extensive review and critical analysis of various materials applied in the design and fabrication of wearable sensors. In our unique transdisciplinary approach, we studied the fundamentals of blood pressure and examined its measuring modalities while focusing on their clinical use and sensing principles to identify material functionalities. Then, we carefully reviewed various categories of functional materials utilized in sensor building blocks allowing for comparative analysis of the performance of a wide range of materials throughout the sensor operational-life cycle. Not only this provides essential data to enhance the materials’ properties and optimize their performance, but also, it highlights new perspectives and provides suggestions to develop the next generation pressure sensors for clinical use.

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“…Since then, laser-scribed graphene (LSG) has been extensively investigated from different theoretical and applied standpoints, including the laser graphitization [16][17][18] , effects of different types of lasers [19][20][21] , environments 22,23 , and lasing parameters [24][25][26] . LSG has been applied to a number of applications, such as sensing [27][28][29][30][31][32] , catalysis [33][34][35] , and energy storage devices [36][37][38] . Here, we utilized mask-free and chemicalfree laser processing technology to fabricate highly flexible Hall-Effect sensors based on graphene.…”

Section: Introductionmentioning

confidence: 99%

Flexible Hall sensor made of laser-scribed graphene

et al. 2021

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Graphene has shown considerable potential for sensing magnetic fields based on the Hall Effect, due to its high carrier mobility, low sheet carrier density, and low-temperature dependence. However, the cost of graphene in comparison to conventional materials has meant that its uptake in electronic manufacturing has been slow. To lower technological barriers and bring more widespread adoption of graphene Hall sensors, we are using a one-step laser scribing process that does not rely on multiple steps, toxic chemicals, and subsequent treatments. Laser-scribed graphene Hall sensors offer a linear response to magnetic fields with a normalized sensitivity of ~1.12 V/AT. They also exhibit a low constant noise voltage floor of ~ 50 nV/$$\sqrt {{\mathrm{Hz}}}$$ Hz for a bias current of 100 µA at room temperature, which is comparable with state-of-the-art low-noise Hall sensors. The sensors combine a high bendability, come with high robustness and operating temperatures up to 400 °C. They enable device ideas in various areas, for instance, soft robotics. As an example, we combined a laser-scribed graphene sensor with a deformable elastomer and flexible magnet to realize low-cost, compliant, and customizable tactile sensors.

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Laser‐Printed, Flexible Graphene Pressure Sensors

Cited by 43 publications

References 30 publications

Electrochemical Detection of Glucose Molecules Using Laser-Induced Graphene Sensors: A Review

Electrochemical Detection of Glucose Molecules Using Laser-Induced Graphene Sensors: A Review

Blood Pressure Sensors: Materials, Fabrication Methods, Performance Evaluations and Future Perspectives

Flexible Hall sensor made of laser-scribed graphene

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