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In this paper, power allocation for device-to-device (D2D) communication underlaying cellular networks is investigated. Our optimization task is to maximize the sum rate of the cellular link and the D2D link subject to the maximum power budget and intercell interference constraints. An efficient iterative algorithm is proposed to address the formulated intractable problem, to which the global optimum...
Copper nanoparticle (NP) inks offer lower cost conductors compared with the more common silver conductors used for flexible electronics applications. However, oxidation occurs during conventional oven-curing limiting their use. This paper reports screen/inkjet printed copper conductors, cured using a laser, on flexible Kapton (Polyimide), PET (Polyethylene terephthalate), paper and polyester/cotton...
Pretreatments have a great effect on the through silicon via (TSV) copper electroplating filling process. In this study, we compared the wetting effect by observing cross-sectional images of samples pretreated with ultrasound and vacuuming method. And the electrochemical test was used to verify the effect of acid plating solution on the oxidation of the Cu seed layer. Without any pretreatment, vias...
Cuprous oxide(Cu2O)/rectorite nanocomposites were prepared through polyol method by using cupric acetate complex as precursor of Cu, aiming to utilize the iron species in the clay material and hydrogen peroxide derived from Cu2O to form a novel immobilized Fenton system. The obtained nanocomposites were characterized by X-ray diffraction, Scanning electron microscopy and X-ray Photoelectron Spectroscopy...
The deposition of needle-shaped cuprous oxide (Cu2O) particles (20~50 nm) on chitosan nanoparticles were made by anodic oxidation of copper electrode in alkaline solution, Fe2+ was immobilized by chitosan nanoparticles with chelating. Chitosan-Fe2+/Cu2O were used as an immobilized Fenton reagent activated by visible light at biocompatible pH values(pH≈7-8) in the degradation of brilliant red X-3B...
CuInS2 thin films have been prepared by one-step DC reactive sputtering process. Full characterizations have been carried out by EDS, XRD, SEM, optical transmittance and electrical measurement. XRD and SEM analysis of the films show that the crystallinity and morphology could be improved by altering the composition of the films to stoichiometric. The band gaps of samples with different Cu/In ratio...
A low temperature process for transferring carbon nanotube (CNT) film from a silicon wafer to a copper surface via conductive adhesives is proposed. Both the close-and open-ended CNT films were successfully transferred to a desirable substrate. The morphologies and electrical properties of the transferred CNT films were studied. An ohmic contact was formed between a CNT film and a highly conductive...
A novel integrated electronic tongue has been developed for the concentration determination of trace heavy metal ions in aqueous media. It combines an Au microelectrodes array (AuMEA) with a multiple lightaddressable potentiometric sensor (MLAPS) on a silicon substrate. AuMEA contains 30 times 30 individual 10 mum diameter Au disk microelectrodes, upon which thin mercury film is electrodeposited....
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