Researchers at MIT have used CVD graphene to selectively filter molecules. This has been attributed to the intrinsic defects in CVD graphene. Graphene takes one more leap for energy and water solutions.
For electronics industry, zero band gap of graphene has been a curse regardless of astonishing carrier mobility and optical transparency. However, gapless graphene seems to be a boon for optical transmission in THz range. This is all because of broadband absorption by graphene.
Researchers at University of Notre Dame have demostrated an unseen capability of graphene as THz wave modulator.
Controlling the defects in graphene is a very challenging task which when circumvented can provide defected graphene with more number of applications. Researchers at University of Oxford have used electron beam to create defects in graphene in a controlled manner. This can pave the way for graphene research based on atomic defects.
Graphene has shown great promise in upcoming plasmonic future where photons can be electrically controlled. However, this requires designing appropriate photonic materials where graphene can be used an active material. In a recent report in Nature Materials, it is indeed demonstrated that graphene, in conjunction with the metamaterial, can modulate both the amplitude and phase of the transmitted waves.
Graphene is known to exhibit a broad absorption peak at around 4.6 eV. This is attributed to resonant excitonic effects due to electron-hole interaction in the pi and pi star bands. Feeding on this extraordinary property of this single atomic layer, recent theoretical work has demonstrated that graphene layers can act as frequency tunable subwavelength imaging device in a proper configuration of a lens.
Researchers have used in-situ electron irradiation and heating in a TEM chamber to manipulate the size of graphene nanopores. This enables the shrinkage or widening of a graphene nanopore. The nanopores can be shrunk to the sizes small enough to thread a single DNA strand. This will help in DNA sequencing.
Graphene is a flourishing material which has significant impact on biomedical industry.
In a recent report, published in nature nanotechnology, graphene has been used a tunnel barrier for low resistance spin injection into silicon. This is attributed to chemical inertness and high conductivity of graphene.