TiO2/graphene nano platelets (GNP) nanocomposite cathodes have been synthesized through a simple ball mill process. TiO2 anatase nanoparticles, around 16 nm in size, were encapsulated in the 2D graphene matrix. The synthesized samples are characterized using x-ray diffraction (XRD), DSC, impedance spectroscopy, and scanning electron microscope (SEM). The graphene nano platelets act not only to ...

Address correspondence to [email protected] ABSTRACT Graphene has many unique properties that make it an ideal material for fundamental studies as well as for potential applications. Here we review recent results on the Raman spectroscopy and imaging of graphene. We show that Raman spectroscopy and imaging can be used as a quick and unambiguous method to determine the number of graphene layers...

Titanium(IV) oxide graphene [1] or graphene oxide nano composite [2] were prepared by one-pot thermal hydrolysis of suspension graphene or graphene oxide nanosheets and titanium oxide in three different forms as a starting materials. Graphene nanosheets were produced in a large quantity from natural graphite using a high intensity cavitation field in a pressurized ultrasonic reactor [3]. The gr...

The many desirable material properties of the novel graphene films, including ultra-high mobility, high saturation velocity, high current carrying capability, excellent thermal conductivity, ultra-thin geometry, and the feature to integrate with traditional CMOS processes, offer the potential for graphene-based electronics. Since the bandgap of semiconducting GNRs is inversely proportional to t...

It is understood that nano-channels of graphene oxide membranes have a water flow mechanism which is similar to the water flow inside carbon nanotube pores. The water transport mechanisms recently proposed by various researchers suggest that membranes composed of graphene oxide laminates could be regarded as an assembly of many tiny carbon nanotubes stacked together with attached functional gro...

The "carbon nano-world" has made over the past few decades huge contributions in diverse scientific disciplines and technological advances. While dramatic advances have been widely publicized in using carbon nanomaterials such as fullerenes, carbon nanotubes, and graphene in materials sciences, nano-electronics, and photonics, their contributions to biology and biomedicine have been noteworthy ...

We show how the magnetization of nano-objects can be efficiently regulated. Several types of nanosystems are considered: magnetics nanomolecules, magnetic nanoclusters, polarized nanomolecules, and magnetic graphene. These nano-objects and the structures composed of them enjoy many common properties, with the main difference being in the type of particle interactions. The possibility of governi...

Highly confined surface plasmons on graphene attract substantial interest as potential information carriers for highly integrated photonic data processing circuits. However, plasmon losses remain the main obstacle for implementation of such devices. In near-field microscopic experiments performed at the wavelength of 10 μm we show that a substantial reduction of plasmon damping can be achieved ...

ENHANCEMENT IN ELECTROCHEMICAL PERFORMANCE OF LiFePO4-CARBONNANO COMPOSITE MATERIALS FOR LITHIUM ION BATTERIESbyKULWINDER S. DHINDSAMay 2015Advisor:Dr. Zhixian ZhouCo Advisors: Dr. Ratna Naik and Dr. Gholam-Abbas NazriMajor:Physics (Condensed Matter)Degree:Doctor of PhilosophyLiFePO4 has attracted great interest as a cathode material for lithi...

A novel design based on both FeOx and Si nano-dots bonded with graphene (FeOx·Si@GNS) as dual lithium-storage centers is reported. They show high performance as anode materials for Li-ion batteries with a remarkable reversible capacity of 1160 mA h g(-1) at 0.2 A g(-1), fast charging/discharging rate, and long cycling life (e.g., a capacity retention of 81.7% at 2.0 A g(-1) after 600 cycles). T...