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GFETs — Perfect platform device for new sensor research and development

In recent research involving graphene, scientists have been interested in implementing this unique 2D material  in nanomaterial applications. In this respect, the analytical sensors based on graphene, with its outstanding material properties and  characteristics, including remarkably high charge carrier mobility and very large surface to volume ratio, are currently strong technological candidates for chemical, electrical, and especially in biosensing applications as the adsorbed molecules can readily affect its conductivity through charge transfer [1, 2].

Due to the 2D structure of graphene, GFETs with their superior properties are advantageous to other types of FETs offering high sensitivity and selectivity for ion detection [3-5].  The Strem Catalog by Ascensus Specialties, together with Graphenea, offers the high-quality graphene FET chips providing researchers with direct access to the newest graphene devices: 06-2555 – Graphene Field-Effect Transistor (GFET) Chip - Grid pattern and 06-2560 – Graphene Field-Effect Transistor (GFET) Chip - Quadrant pattern (Fig. 1.). This promotes application-driven research without a need to construct GFETs from scratch.

Fig. 1. Graphene Field-Effect Transistor (GFET) Chips -
Grid pattern 06-2555 (left) and 06-2560 Quadrant pattern (right)

These GFET devices are not encapsulated and ready for further functionalization, offering a perfect platform for new sensor research and development. Each chip provides 36 individual GFETs distributed in grid and quadrant patterns, with mobilities typically in excess of 1000 cm²/V.s. For evaluation of further physical specifications, please review the corresponding technical note.

Due to its unique structure and amazing physicochemical properties, including high chemical inertness, biocompatibility, large specific surface area, and high electric conductivity, graphene has a great potential in bioelectronic applications [1]. Furthermore, Graphene's unique optoelectronic properties are promising candidates for photodetectors with ultrafast photo-response over a wide spectral range from far-infrared to ultraviolet radiation [6].

Many applications require the ability to detect chemicals in the air or water with increasing sensitivity demands. Graphene chemical sensors have demonstrated the detection ability of single molecule adsorption events [8].

Applications cover many fields, including automotive, consumer electronics, healthcare, and defense industries, where magnetic field sensors are used for position detection, as well as current and frequency monitoring [7]. Graphene biosensors are capable of providing a fusion of biology and electronics that fundamentally transforms biological testing capabilities, in terms of  size and speed [1-2].

References:

1.       Biosens. Bioelectron. 2018, 100, 312.
2.       Sens Actuator B Chem 2017, 253, 759.
3.       J. Phys. D - Appl. Phys. 2012, 45, 019501.
4.       Chem. Rev. 2017, 117, 9973.
5.       Appl. Phys. Rev. 2017, 4, 021306.
6.       Nature Nanotechnology 2014, 9, 780.
7.       Nanotechnology 2013, 24, 214002.
8.       J. Phys. Chem. Lett. 2012, 3, 1746.

Featured Products

06-2555  Graphene Field-Effect Transistor (GFET) Chip - Grid pattern (1034343-98-0)
06-2560  Graphene Field-Effect Transistor (GFET) Chip - Quadrant pattern (1034343-98-0)

Related Resources & Product Lines:

Nanomaterials
Graphene
Carbon Based Nanomaterials & Elemental Forms
Nanomaterials Booklet