Handbook of Graphene, Volume 3 by Unknown

Author:Unknown
Language: eng
Format: epub
ISBN: 9781119469674
Publisher: John Wiley & Sons, Incorporated
Published: 2019-06-05T14:14:00+00:00

8.3 Applications of Graphene

Graphene has a large number of applications. A few of them are discussed below:

Graphene in electronics: The excellent electrical properties of graphene, such as its high electron mobility coupled with modest current modulation, make it very appropriate for very fast analog electronics, which are used in wireless communications, radar, security systems, imaging, and other applications. In the future, graphene researchers need to improve the quality of synthetic graphene and to study its properties under conditions relevant to technology the future of graphene in both electronics and photonics and anticipates the development of additional new applications.

Graphene could replace the transistor with switches that steer electrons just like beams of light. These transistors can be used for radio frequency (RF) circuits such as RF amplifiers of mixers. A number of concepts for (non-volatile) graphene switches have proposed that operate on mechanisms other than the classic semiconductor field effect. Graphene is also used as photo-detectors, optical modulators, mode locked laser/THz generator, optical polarization controllers, etc.

Graphene in aerospace: There are a wide variety of potential aerospace applications which graphene could be used for: Lighter electronic displays: Graphene is expected to be realized in the electronics industry with the introduction of flexible display screens. This could have interesting applications for producing thinner and lighter in-flight entertainment (IFE) seat back display screens which would realize a considerable reduction in weight for airlines. There could also be weight-saving opportunities in new versions of glass cockpit displays and electronic flight bags.

Reinforcing materials: The mechanical, chemical, electronic and barrier properties of graphene make it attractive for use in composite materials. If used as an additive to a composite matrix polymer, Graphene could increase composite compressive strength, have a higher temperature resistance, reduce moisture uptake and (because of its superior electrical conductive properties) could mitigate damage from lightning strikes without the need to incorporate metal materials with the composite structure. Graphene’s thermal conductivity could also have applications for improved aircraft de-icing systems components.

Coatings: Graphene can be used as an ideal material for ultra-thin paints and coatings which not only offer protection but also enhance the original materials. Graphene-based paints could be used for antistatic, electromagnetic-interference shielding and gas barrier applications. The aerospace applications for lightweight gas impermeable films and coatings could be widespread, with possibilities for lighter-weight paints for aircraft, improved fuel containment systems, enhanced airship or balloon gas containment systems, and lightweight, gas-tight materials for spacecraft.

Thin film protective graphene coatings could also be used to enhance the qualities of existing aerospace materials. One example is titanium aluminide (TiAl) alloy which is used for high temperature aerospace components. Although it has the advantages of low weight per volume, corrosion resistance, and tolerance of relatively high temperatures, titanium aluminide also suffers from brittleness or limited ductility, as well as insufficient performance under severe environmental conditions and temperatures exceeding 800°C.

Biomedical applications of graphene: Graphene has a lot of medical applications, such as drug delivery, gene therapy, and cancer therapy, etc.

Biosensing and Bioimaging: Graphene derivatives, including pristine graphene, graphene oxide

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