We report the realization of top-gated graphene nanoribbon field effect transistors (GNRFETs) of ~10 nm width on large-area epitaxial graphene exhibiting the opening of a band gap of ~0.14 eV. Contrary to prior observations of disordered transport and severe edge-roughness effects of GNRs, the experimental results presented here clearly show that the transport mechanism in carefully fabricated ...

The Great North Run witnesses 55,000 plus participants run from Newcastle to South Shields and is an annual ritual for many runners. event reaches audiences around the world well documented by media, yet remains of such are as much embodied in memory a runner. Despite this, memories can be unreliable forgotten, like routine daily interactions with familiar environments. This article explores ho...

Abstract Integration of graphene and hexagonal boron nitride (hBN) in lateral heterostructures has provided a route to broadly engineer the material properties by quantum confinement electrons or introduction novel electronic magnetic states at interface. In this work we demonstrate heteroepitaxial growth nanoribbons (GNRs) passivated hBN using high-temperature molecular beam epitaxy (HT-MBE) g...

In this study, the exergy analysis of graphene-based nanofluids in a compact heat exchanger is examined. experiments using distilled water as base fluid, graphene nano-ribbon and oxide were used at 0.01% 0.02% volume concentrations. The carried out 36, 40, 44 oC fluid inlet temperatures 0.6, 0.7, 0.8, 0.9 m3/h mass flow rates. As result calculations made for all temperature rates, it was found ...

Super-resolution imaging of fluorescence-free plasmonic nanoparticles (NPs) was achieved using enhanced dark-field (EDF) illumination based on wavelength-modulation. Indistinguishable adjacent EDF images of 103-nm gold nanoparticles (GNPs), 40-nm gold nanorods (GNRs), and 80-nm silver nanoparticles (SNPs) were modulated at their wavelengths of specific localized surface plasmon scattering. The ...

A systematic study of simulated atomic-resolution electronic energy-loss spectroscopy (EELS) for different graphene nanoribbons (GNRs) is presented. The results of ab initio studies of carbon [Formula: see text] core-loss EELS on GNRs with different ribbon edge structures and different hydrogen terminations show that theoretical core-loss EELS can distinguish key structural features at the atom...

Graphene nanoribbons (GNRs) are ultra-narrow strips of graphene that have the potential to be used in high-performance graphene-based semiconductor electronics. However, controlled growth of GNRs on dielectric substrates remains a challenge. Here, we report the successful growth of GNRs directly on hexagonal boron nitride substrates with smooth edges and controllable widths using chemical vapou...

Graphene shows promise as a future material for nanoelectronics owing to its compatibility with industry-standard lithographic processing, electron mobilities up to 150 times greater than Si and a thermal conductivity twice that of diamond. The electronic structure of graphene nanoribbons (GNRs) and quantum dots (GQDs) has been predicted to depend sensitively on the crystallographic orientation...

Graphene nanoribbons !GNRs" were fabricated by metal mask lithography and plasma etching. GNRs with width #20 nm show field-effect conductance modulation of #12 at room temperature and !106 at 4.2 K. Conductance quantization due to quantum confinement in low field transport was observed. Landauer formula was utilized to fit the experimental data and excellent agreement was obtained. The extract...

An elementary function that is now commonly referred to Gabor function, Gabor filter and Gabor wavelet was derived from uncertainty relation for information by Gabor to overcome the representation limit of Fourier analysis. Analyzing a signal by a Gabor filter in terms of convolution or spatial filtering, two pieces of information—phase and magnitude—can be obtained. In the paper, Gabor filter ...