Multilayer screen printed flexible graphene antenna for ISM band applications and energy harvesting

Ram, Prasanna; Banu, N. M. Masoodhu; Light, R. Rachel Jeeva

doi:10.1016/j.matpr.2020.11.123

Cited by 2 publications

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The following constituents were added to form a suspension (the weight percentages have been parenthesised): GP (25%-30%) as the base material, ethanol (27%-32%) as the solvent, carboxymethylcellulose (CMC; 14%-19%) as the binder, glycerol (8%-13%) for the tuning of viscosity and deionised water (15%-25%) for dilution and prevention of evaporation of the volatile components in the mixture. The suspension was placed on a magnetic stirrer for 1.5-2 h (no heat) and then in an ultrasonicator for 1-1.5 h (no heat); the viscosity of the GI was ∼4.5 mPa s, which is optimum for screen printing [37]. The as-prepared GI was stored in an airtight glass vial, as shown in figure S2.…”

Section: Synthesis and Characterisation Of Gimentioning

confidence: 99%

Conductive graphene-based coagulated composites for electronic printing applications

Sankar,

2024

Funct. Compos. Struct.

View full text Add to dashboard Cite

Graphene is gaining significance in applications such as sensors, antennas, photonics and spintronics. In particular, it is suitable for printing components and circuits affording the properties of high conductivity alongside flexibility, elasticity and wearability. For this application, graphene is typically customised into a fluidic form—ink or paint. This paper reports a novel, economical, scalable methodology for synthesising electrically conductive graphene-based coagulated composite that could be utilised in the above-mentioned applications. Composites are prepared from graphene powder/ink and screen-printing ink (GP–SPI and GI–SPI, respectively) at different mass ratios, and the optimal composition is identified by brush coating on paper in the form of rectangular strips. As a proof of concept, at optimum mass ratios, the GP–SPI and GI–SPI composites exhibit electrical conductivities ranging 0.068–0.702 mS m−1 and 0.0303–0.1746 µS m−1, in order. The as-prepared conductive composites are then screen-printed onto a square with an area of 1 cm2 on ceramic, FR4, glass, paper, polyester and wood substrates. The coagulated GP–SPI and GI–SPI composites are compatible with all these substrates and yield a conductive coating, demonstrating their suitability in multifaceted applications. Furthermore, the method proposed herein eliminates the need for rare/precious expensive materials, state-of-the art equipment, highly skilled personnel and costs associated with the same, thereby broadening the avenues for low-cost, fluidic graphene-based functional composites.

show abstract

Section: Synthesis and Characterisation Of Gimentioning

confidence: 99%