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Abstract: A two terminal organic bistable memory was fabricated by solution based spin casting of thin films of poly-[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylenevinylene] (MEHPPV):ZnO nanoparticles onto ITO coated glass. The morphology of the thin films were characterized by Raman and FTIR spectroscopies. The electrical characterization showed that the two-terminal device exhibited excellent switching characteristics with ON/OFF ratio greater than 1×104 when the voltage was swept between −1V and +1V. The device maintained its state even after removal of the bias voltage. The device exhibited stable performance at various performance tests. Two distinct capacitance states with hysteresis were observed and we suggest that the switching mechanism involved could be attributed to trapping and detrapping of electrons. [Copyright &y& Elsevier]

The present study tried for a phyto-synthetic method of producing silver nanoparticles (Ag-NPs) with size controlled as and eco-friendly route that can lead to their advanced production with decorative tranquil morphology. By inducing temperature fluctuation of the reaction mixture from 25 to 80 °C the plasmon resonance band raised slowly which had an ultimate effect on size and shape of Ag-NPs as shown by UV–visible spectroscopy and TEM results. The biosynthesized nanoparticles showed good cytotoxic impact against MCF-7, A549 and Hep2 cells compared to normal cell lines. Compared to control plates, the percentage of cell growth inhibition was found to be high with as concentrations of Ag-NPs becomes more as determined by MTT assay. The AO/EtBr staining observations demonstrated that the mechanism of cell death induced by Ag-NPs was due to apoptosis in cancer cells. These present results propose that the silver nanoparticles (Ag-NPs) may be utilized as anticancer agents for the treatment of various cancer types. However, there is a need for study of in vivo examination of these nanoparticles to find their role and mechanism inside human body. Further, studies we plan to do biomarker fabrication from the green synthesized plant extract nanoparticles like silver, gold and copper nanoparticles with optimized shape and sizes and their enhancement of these noble nanoparticles. [ABSTRACT FROM AUTHOR]