Graphene as a tunable resistor

Bellucci, Stefano; Bozzi, Maurizio; Cataldo, Antonino; Moro, Riccardo; Mencarelli, Davide; Pierantoni, Luca

doi:10.1109/smicnd.2014.6966380

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…Graphene nanoplates (GNPs) were produced in the laboratory by microwave irradiation, starting from Asbury ® expandable graphite (purity 99.1%, cod EG 1721, Asbury Graphite Mills Inc, Asbury, IA, USA). The synthesis method used in this work, developed by the NEXT Nanotechnology Group (INFN-LNF) [ 46 , 47 , 48 ], involves the use of EG with SO 4 2− and NO 3 − as intercalating agents. The exfoliation process took place in a household microwave oven (thus replacing the furnace, in which it would reach a temperature of ~1000 °C) as follows: 1–2 g of EG was placed in a ceramic pot, which was placed in the microwave oven and irradiated at 850 W for few seconds.…”

Section: Methodsmentioning

confidence: 99%

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MacGyvered Multiproperty Materials Using Nanocarbon and Jam: A Spectroscopic, Electromagnetic, and Rheological Investigation

Cataldo

Pietra

Zappelli

et al. 2022

JFB

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As part of a biopolymer matrix, pectin was investigated to obtain an engineered jam, due to its biodegradability. Only a few examples of pectin-based nanocomposites are present in the literature, and even fewer such bionanocomposites utilize nanocarbon as a filler—mostly for use in food packaging. In the present paper, ecofriendly nanocomposites made from household reagents and displaying multiple properties are presented. In particular, the electrical behavior and viscoelastic properties of a commercial jam were modulated by loading the jam with carbon nanotubes and graphene nanoplates. A new nanocomposite class based on commercial jam was studied, estimating the percolation threshold for each filler. The electrical characterization and the rheological measurements suggest that the behavior above the percolation threshold is influenced by the different morphology—i.e., one-dimensional or two-dimensional—of the fillers. These outcomes encourage further studies on the use of household materials in producing advanced and innovative materials, in order to reduce the environmental impact of new technologies, without giving up advanced devices endowed with different physical properties.

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Section: Methodsmentioning

confidence: 99%

“…Additionally, to reduce the environmental impact, the GNPs were produced using an eco-friendly method developed in previous works [ 46 , 47 , 48 ]. Finally, to demonstrate the ability to produce advanced materials using household reagents, the matrix was obtained starting from a jam formulation purchased in a supermarket.…”

Section: Introductionmentioning

confidence: 99%

MacGyvered Multiproperty Materials Using Nanocarbon and Jam: A Spectroscopic, Electromagnetic, and Rheological Investigation

Cataldo

Pietra

Zappelli

et al. 2022

JFB

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“…Graphene has attracted much attention due to its light weight, large surface area, excellent optical properties, and electrical properties. In recent years, significant advances have been made in the preparation methods of large-scale graphene [ 1 , 2 , 3 ], promoting its applications in the microwave and low terahertz ranges [ 4 , 5 , 6 , 7 , 8 , 9 ], such as RF graphene field effect transistor, graphene antenna, and graphene microstrip attenuator. Graphene nanoplates are composed of few-layer graphene and generally have a small area, which often appear in the form of fragments, suspensions, or powders.…”

Section: Introductionmentioning

confidence: 99%

High-Selectivity Bandpass Filter with Controllable Attenuation Based on Graphene Nanoplates

et al. 2022

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A high-selectivity band pass filter with controllable attenuation based on graphene nanoplates is proposed in this paper. Graphene with controllable resistance has a good uniform attenuation effect to electric field intensity. The filter utilizes quarter wavelength stepped impedance resonators and mixed electromagnetic coupling to have compact circuits and high performance. The graphene nanoplates are loaded on the microstrip resonator to reduce the electric field intensity, which results in a flat attenuation in the passband. In addition, the filter has two transmission zeros, which lead to a strong selectivity. Finally, a high-selectivity bandpass filter with controllable attenuation is formed. By changing the bias voltage of graphene, a controllable attenuation of 1.64–11.13 dB can be achieved in the working passband centered at 1.36 GHz. In order to validate the concept, the prototype is fabricated and measured. The measurement results are in good agreement with the simulation results. The proposed high-selectivity bandpass filter with controllable attenuation based on graphene nanoplates has widely potential in reconfigurable wireless communication systems and radar systems due to its high integration and versatility.

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Investigation of graphene flake and photonic crystal structure enhancement effect by Raman spectroscopy of thymine

Yaremkevych,

Fesenko,

Hryn

et al. 2023

Molecular Crystals and Liquid Crystals

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Graphene as a tunable resistor

Cited by 5 publications

References 12 publications

MacGyvered Multiproperty Materials Using Nanocarbon and Jam: A Spectroscopic, Electromagnetic, and Rheological Investigation

MacGyvered Multiproperty Materials Using Nanocarbon and Jam: A Spectroscopic, Electromagnetic, and Rheological Investigation

High-Selectivity Bandpass Filter with Controllable Attenuation Based on Graphene Nanoplates

Investigation of graphene flake and photonic crystal structure enhancement effect by Raman spectroscopy of thymine

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