Smart paper from graphene coated cellulose for high-performance humidity and piezoresistive force sensor

Khalifa, Mohammed; Wuzella, Günter; Lammer, Herfried; Mahendran, Arunjunai Raj

doi:10.1016/j.synthmet.2020.116420

Cited by 57 publications

(30 citation statements)

References 39 publications

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“…At a higher percentage of relative humidity, more water molecules are readily available for interaction, and their adsorption to the sensor surface is relatively fast. However, it took more time to reach a saturated value [ 50 ]. It is reported that high sensitivity humidity sensors can be fabricated with nanofibrillated cellulose with graphene oxide and polydimethylsiloxane; however, the desorption curve of the sensor lagged behind its adsorption curve in the range of 75% to 85% relative humidity [ 51 ].…”

Section: Resultsmentioning

confidence: 99%

Rice Husk-Derived Cellulose Nanofibers: A Potential Sensor for Water-Soluble Gases

Shahi

Lee

Min

et al. 2021

Sensors

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Cellulose and its derivatives have evoked much attention in sensor technology as host-matrices for conducting materials because of their versatility, renewability, and biocompatibility. However, only a few studies have dealt with the potential utilization of cellulose as a sensing material without a composite structure. In this study, cellulose nanofibers (CNF) and 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibers (TOCNF) extracted from rice husks by using ultrasonic-assisted methods are introduced as a potential gas sensing material with highly sensitive performance. To fabricate nanocellulose-based films, CNF, TOCNF, and TOCNF with glycerol (TOCNF/G) were dispersed in water and applied on polyimide substrate with digital electrodes to form self-standing thin films by a drop-casting method. A transparent coating layer on the surface of the plate after drying is used for the detection of water-soluble gases such as acetone, ammonia, methane, and hydrogen sulfide gases at room temperature at 52% relative humidity. The sensor prototypes exhibited high sensitivity, and the detection limit was between 1 ppm and 5 ppm, with less than 10 min response and recovery time. The results indicate that both the CNF- and the TOCNF-coated sensors show good sensitivity toward ammonia and acetone, compared to other gases. A TOCNF/G-coated sensor exhibited minimum time in regard to response/recovery time, compared to a CNF-coated sensor. In this study, nanocellulose-based sensors were successfully fabricated using a low-cost process and a bio-based platform. They showed good sensitivity for the detection of various gases under ambient conditions. Therefore, our study results should further propel in-depth research regarding various applications of cellulose-based sensors in the future.

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Section: Resultsmentioning

confidence: 99%

Rice Husk-Derived Cellulose Nanofibers: A Potential Sensor for Water-Soluble Gases

Shahi

Lee

Min

et al. 2021

Sensors

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Section: біорозкладні сенсориunclassified

“…Із наноцелюлози виготовляють плівки, прозорість яких може досягати 70 %, модуль Юнгадо 11,45 ГПа, а міцність на розрив сягає 42,3 МПа [69,70]. Зазвичай плівки наноцелюлози пропонують використовувати як підкладку для виготовлення гнучкої електроніки [12,63,69], однак їх можна застосовувати як чутливий шар [62,[70][71][72]. Для покращення чи надання нових характеристик плівкам наноцелюлози її можна покривати полімерними матеріалами [12,63,64] чи використовувати для створення композитних матеріалів із полімерами, наночастинками металів, вуглецевими нанотрубками тощо [4,72].…”

Section: біорозкладні сенсориunclassified

Flexible and Biodegradable Sensors: Materials, Manufacturing Technology and Devices on Its Basis

Lapshuda¹,

Koval²

2021

KPI SN

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Background. Currently, there is a significant number of technologies and materials in the world that are used to manufacture flexible electronics devices. Therefore, a review of various technologies and materials for the manufacture of flexible sensors, which would not be inferior in terms of sensitivity to their solid-state counterparts, is in demand. In addition, most modern flexible electronics technologies are based on the use of artificial polymers, the production of which pollutes the environment and which need to be disposed of at the end of its service life. Therefore, there is an urgent need to find an alternative to artificial polymers, environmentally friendly material. Objective. The purpose of the paper is to determine design and technological features of manufacturing and application of flexible and biodegradable electronic sensors. Methods. The article analyses, classifies and compares different technologies and materials for the manufacture of flexible sensors, which would not be inferior to their solid-state counterparts in terms of sensitivity. The technological features of synthesis and the main characteristics of flexible sensors made on the basis of artificial and biodegradable materials were also compared in the paper. Results. The design and technological features of manufacturing as well as application of flexible electronic sensors in comparison with their solid-state analogues were determined in the paper. Three groups of substrate materials that can be used for the synthesis of flexible sensors have been identified and their performance characteristics analysed. A comparison of different production techniques for flexible electronic sensors in terms of environmental friendliness, cost and manufacturability is carried out. Conclusions. The most promising biodegradable material, on the surface of which one can create a flexible sensor, is nanocellulose. Different types of printing are the most promising production technique for the manufacture of such devices, because they are cheap and can provide high productivity. Based on the obtained results, it is possible to improve the existing and develop new methods of creating flexible electronics devices that do not require recycling.

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“…Graphene nanosheets and carbon nanotubes enhanced electrical conductivity. They can also immobilize biomolecules, improving the active surface area and plasmonic fields around AuNPs and AgNPs, resulting in fluorescence quenching and color changes [ 186 ]. Functionalization on paper-based biosensors surfaces incorporating nanomaterials and nanostructures to enhance their performance, adding sensitivity, dynamic range, limit detection, and selectivity.…”

Section: Biosensor Fabricationmentioning

confidence: 99%

Paper and Other Fibrous Materials—A Complete Platform for Biosensing Applications

et al. 2021

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Paper-based analytical devices (PADs) and Electrospun Fiber-Based Biosensors (EFBs) have aroused the interest of the academy and industry due to their affordability, sensitivity, ease of use, robustness, being equipment-free, and deliverability to end-users. These features make them suitable to face the need for point-of-care (POC) diagnostics, monitoring, environmental, and quality food control applications. Our work introduces new and experienced researchers in the field to a practical guide for fibrous-based biosensors fabrication with insight into the chemical and physical interaction of fibrous materials with a wide variety of materials for functionalization and biofunctionalization purposes. This research also allows readers to compare classical and novel materials, fabrication techniques, immobilization methods, signal transduction, and readout. Moreover, the examined classical and alternative mathematical models provide a powerful tool for bioanalytical device designing for the multiple steps required in biosensing platforms. Finally, we aimed this research to comprise the current state of PADs and EFBs research and their future direction to offer the reader a full insight on this topic.

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Smart paper from graphene coated cellulose for high-performance humidity and piezoresistive force sensor

Cited by 57 publications

References 39 publications

Rice Husk-Derived Cellulose Nanofibers: A Potential Sensor for Water-Soluble Gases

Rice Husk-Derived Cellulose Nanofibers: A Potential Sensor for Water-Soluble Gases

Flexible and Biodegradable Sensors: Materials, Manufacturing Technology and Devices on Its Basis

Paper and Other Fibrous Materials—A Complete Platform for Biosensing Applications

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