Electron beam (e-beam) lithography using polymer resists is an important technology that provides the spatial resolution needed for nanodevice fabrication. But it is often desirable to pattern nonplanar structures on which polymeric resists cannot be reliably applied. Furthermore, fragile substrates, such as free-standing nanotubes or thin films, cannot tolerate the vigorous mechanical scrubbin...

Self-assembly of metal phthalocyanine (MPc) molecules on monolayer graphene (MG) epitaxially grown on Ru(0001) and Pt(111) is investigated by means of lowtemperature scanning tunneling microscopy. At low coverage, dispersive single molecules, dispersive molecular chains, and small patches of Kagome lattice are observed for iron phthalocyanine (FePc), manganese phthalocyanine (MnPc), nickel phth...

We design a dual-band absorber formed by combining two cross-shaped metallic resonators of different sizes within a super-unit-cell arranged in mirror symmetry. Simulations indicate that absorption efficiencies greater than 99% can be achieved at two different frequencies under normal incidence. We employ a design scheme with graphene integration, which allows independent tuning of individual a...

The effects of reactive oxygen species on cells have attracted great attention from both physiological and pathological aspects. Superoxide (O2-) is the primary reactive oxygen species formed in animals. We previously developed an O2--generating nanodevice consisting of NADPH oxidase 2 (Nox2) and modulated activating factors. However, the device was subsequently found to be unstable in a standa...

Abstract According to the findings of article, researchers looked at graphene-based hexagonal microstrip patch antennas. In place a U-shaped slot and an elliptical slot, ellipse-shaped was cut into surface radiators that were used in designs recommended. This helped improve radiation performance radiators. A frequency known as ultra-wideband (UWB) is modelling process for anticipated structures...

Solar energy is an essential renewable source among all the other sources. It possible to improve efficiency of solar absorber by increasing absorber’s capacity for absorption, which can help in building better solar-based devices. The need covering whole spectrum led us design this T-shaped metasurface based on graphene material. gives 90, 88 and 57% absorption visible, infrared UV regions, re...

We report on the preparation, atomic resolution imaging, and element selective damage mechanism in atomically thin boron nitride membranes. Flakes of less than 10 layers are prepared by mechanical cleavage and are thinned down to single layers in a high-energy electron beam. At our beam energies, we observe a highly selective sputtering of only one of the elements and predominantly at the exit ...

A small volumetric capacitance resulting from a low packing density is one of the major limitations for novel nanocarbons finding real applications in commercial electrochemical energy storage devices. Here we report a carbon with a density of 1.58 g cm(-3), 70% of the density of graphite, constructed of compactly interlinked graphene nanosheets, which is produced by an evaporation-induced dryi...