The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this work, we theoretically propose a highly-flexible optical bistable switch based on a suspended monolayer Z-shaped graphene nanoribbon nanoresonator (NR). It is shown that bistable nonlinear absorption and refraction response will appear in the strong exciton-NR coupling rme. Specifically, we plot bistability phase diagrams within the system’s parameter subspace and derive the critical conditions...
Electrochemically reduced graphene oxide (ERGO) has attracted considerable interest in the electrochemical biosensing field. In this work, the π−π stacking assembly of phenoxyl-dextran (DexP) and sensitive electrochemical stripping analysis of gold nanoparticles (Au NPs) on the ERGO surface are conducted to develop a novel nonenzymatic glucose biosensing method. Concanavalin A (Con A) was covalently...
Carbon nanohorns (CNHs) as an important carbon nanostructure have been studied in many fields and shows huge potential for applications. Previous studies exhibit that CNHs consist of single-walled carbon nanohorns in the periphery and a graphene-based core in the center. However, the knowledge of their mechanical properties is still lacking. Here, the mechanical behaviors of CNHs subjected to uniaxial...
The graphene quantum dots (GQDs) are attractive nanomaterials with excellent optical and optoelectronic properties. However, the clear photoluminescence (PL) was difficult to be investigated due to the complicated structures of the reported GQDs. In this work, four kinds of GQDs were synthesized by organic methods with certain chemical structures. The PL mechanism of the GQDs was investigated by ultrafast...
We report a novel method to reduce layer number and structural defects of few-layer graphene (FLG) in He/H2 arc discharge via rapid cooling treatment. By adjusting the parameters of He/H2 mixtures appropriately, the effects of incremental cooling rates on the formation, morphology and structural defects of the raw soot have been investigated. According to observations of transmission electron microscopy...
Magnetic iron/graphitic mesoporous carbon composites were prepared by a simple one-step solid–liquid grinding/templating route. X-ray diffraction, nitrogen adsorption–desorption, transmission electron microscopy, vibrating-sample magnetometry and thermogravimetric analysis were used to characterize the samples. It was observed that a high content of magnetic iron nanoparticles could be embedded in...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.