Materials Literature
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Graphene nanoribbons display an imperfectly understood transport gap. We measure transport through nanoribbon devices of several lengths. In long (>/=250 nm) nanoribbons we observe transport through multiple quantum dots in series, while shorter (</=60 nm) constrictions display behavior characteristic of single and do…
Fabricating well-defined and highly reproducible platforms for surface-enhanced Raman scattering (SERS) is very important in developing practical SERS sensors. We report a novel SERS platform composed of a single metallic nanowire (NW) on a metallic film. Optical excitation of this novel sandwich nanostructure provide…
Novel technology in the nanomedicine field is expected to develop innovative products as targeted drug-delivery approaches. Targeted drug delivery of various drugs for the treatment of cancer, AIDS and brain disorders is the primary research area in which nanomedicines have a major role and need. This review is concer…
Mechanically exfoliated graphene layers deposited on ${\text{SiO}}_{2}$ substrate were irradiated with ${\text{Ar}}^{+}$ ions in order to experimentally study the effect of atomic scale defects and disorder on the low-energy electronic structure of graphene. The irradiated samples were investigated by scanning tunneli…
Abstract Two cationic poly(fluorene‐ alt ‐benzothiadiazole)s with different side chains are designed and synthesized. Both polymers show low fluorescence in aqueous solution due to the charge‐transfer character of the polymer's excited states. Fluorescence turn‐on biosensors for heparin detection and quantification ar…
A method is presented to prepare high-density, vertically aligned carbon nanotube (VA-CNT) membranes. The CNT arrays were prepared by chemical vapor deposition (CVD), and the arrays were collapsed into dense membranes by capillary-forces due to solvent evaporation. The average space between the CNTs after shrinkage wa…
We describe a technique to fabricate, for the first time, superoleophobic coatings by spray casting nanoparticle-polymer suspensions. The method involves the use of ZnO nanoparticles blended with a waterborne perfluoroacrylic polymer emulsion using cosolvents. Acetone is shown to be an effective compatibilizing cosolv…
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTADDITION / CORRECTIONThis article has been corrected. View the notice.Dendrimers in Oncology: An Expanding HorizonRakesh Kumar Tekade, Palanirajan Vijayaraj Kumar, and Narendra Kumar Jain*View Author Information Pharmaceutics Research Laboratory, Department of Pharmaceutical…
The development of molecularly targeted probes that exhibit high biostability, biocompatibility, and efficient clearance profiles is key to optimizing biodistribution and transport across biological barriers. Further, coupling probes designed to meet these criteria with high-sensitivity, quantitative imaging strategie…
The properties of pristine, free-standing graphene monolayers prepared by mechanical exfoliation of graphite are investigated. The graphene monolayers, suspended over open trenches, are examined by means of spatially resolved Raman spectroscopy of the G-, D-, and 2D-phonon modes. The G-mode phonons exhibit reduced ene…
We present the design, fabrication, and characterization of a metamaterial absorber which is resonant at terahertz frequencies. We experimentally demonstrate an absorptivity of 0.97 at 1.6 THz. Importantly, our absorber is only $16\text{ }\ensuremath{\mu}\text{m}$ thick, resulting in a highly flexible material that, f…
Top-gated graphene transistors operating at high frequencies (gigahertz) have been fabricated and their characteristics analyzed. The measured intrinsic current gain shows an ideal 1/f frequency dependence, indicating a FET-like behavior for graphene transistors. The cutoff frequency f(T) is found to be proportional t…
Abstract Microporous activated carbon originating from coconut shell, as received or oxidized with nitric acid, is treated with melamine and urea and heated to 950 °C in an inert atmosphere to modify the carbon surface with nitrogen‐ and oxygen‐containing groups for a systematic investigation of their combined effect…
Characiosiphon belongs to the order Chlorococcales of the class Chlorophyceae. It was reported for the first time from India in 1936 by M. O. P. Iyengar who collected it from a stream situated near Tiruchirapalli (Tamilnadu). Later this green alga was reported from various parts of the country i. e. Gwalior (Agarkar,…
Cancer research employing nanotechnology demonstrates that even slight variations in nanoparticles can drastically affect health risks.
Electrical conductivity relaxations were measured at a fixed temperature (700oC) on proton-conducting BaCe0.95Yb0.05O2.975 upon sudden changes of water-vapor activity in fixed oxygen activity atmospheres in the ranges of -4.5<log aO2<0.02 and -5.0<log aH2O<-2.0. It has been confirmed that the conductivity…
Abstract The foundational data and rules of SUS304 corrosion in aqueous lithium bromide solution at 150–200 °C have been investigated by means of weight loss in this paper. The Taguchi method was chosen to investigate the effects of variables on corrosion at higher temperature. Concentration of dissolved oxygen was co…
The dissolution of metals in acids is a heterogeneous electrochemical reaction, taking place at the interface between a solid and a liquid, described in terms of energy and configuration of the species involved. The energy of activation for two stainless steels in phosphoric acid was determined from their corrosion ra…
The present study is focused on the development of new SOFC cathode structures based on YSZ electrolyte and operating in the temperature range of 600-800oC. The corresponding cathode materials were manufactured from La0.8Sr0.2Fe0.6Ni0.4O3-δ and La0.8Sr0.2Fe0.6Ni0.4O3-δ/ Ce0.9Gd0.1O2 composites. Thin electrolyte diffus…
Abstract Anti‐corrosive composite cerium oxide/titanium oxide (CeO 2 /TiO 2 ) thin films were successfully prepared on an AZ91D magnesium alloy substrate by applying cerium oxide (CeO 2 ) thin films as the inner layer with a sol–gel process. Composition and surface morphology of the thin films were analyzed using X‐ra…