nanotek-2016_posters-accepted-abstracts

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Volume 7, Issue 6 (Suppl)

J Nanomed Nanotechnol

ISSN: 2157-7439 JNMNT, an open access journal

Nanotek 2016

December 05-07, 2016

December 05-07, 2016 Phoenix, USA

International Conference on

Nanotek & Expo

J Nanomed Nanotechnol 2016, 7:6 (Suppl)

Nano hybrid of Phosphorous doped single layer graphene with Ni

0.5

nano particles: green

synthesis , characterization and microwave dielectric spectroscopy

Shahid Ameer, Iftikhar Hussian Gul

School of Chemical and Materials Engineering, Pakistan

ano hybrid of Phosphorous doped single layer graphene sheets with nano crystalline Ni

0.5

ferrites were produced

through facile method using a green solvent. The Ni

0.5

ferrite nano particles were synthesized through solvothermal

synthesis method with average particle size of 20nm and spherical morphology as indicated by SEM and TEM. The as synthesizd

nano hybrids prepared with different loading of phosphorous doped graphene were characterized through XRD, FTIR and TGA. The

microwave dielectric spectroscopy was used to study the dielectric properties in 10MHZ-1.5GH

spectrum and microwave reflection

loss suggested the potential candidacy of the nano hybrids as good microwave absorbers for commercial anechoic chambers.

Fabrication of PANI nanowire as an electrochemical biosensor for DNA detection

Soha Mohajeri

Sharif University of Technology,Tehran, Iran

olyaniline (PANI) is an organic polymer that possesses metallic conductivity and can be grown 1-dimensionally in the form of a

nanowire. In this research the potentiostatic method was applied at the constant potential of 0.75 V to electrochemically deposit

PANI nanowires on the stainless steel electrode. Morphological studies of the sample was carried out by Transmission Electron

Microscopy (TEM) and it was observed that nanowires with 30–50 nm diameters were fabricated. Cyclic Voltammetry (CV),

Scanning Electron Microscopy (SEM), and UV–vis absorption spectra were applied to characterize the PANI nanowires, and the

results revealed that ultra-thin nanowires displayed high electrochemical activity. A single stranded Deoxyribonucleic acid (ssDNA)

was fixed on PANI nanowires to investigate the efficiency of the system as a biosensor platform. Sensitivity of the PANI electrode

was detected by measuring peak currents in Differential Pulse Voltammetry (DPV) after hybridization with different concentrations

of the ssDNA. It was concluded that the system worked well even at low concentrations, and large peak current values at the order

of mA were produced. Electrochemical Impedance Spectroscopy (EIS) of the sensor electrode was carried out with an Autolab-30

potentiostat/galvanostat to understand chemical transformations and processes associated with conducting polymer supported

electrodes. The changes in impedance indicated that the system was extremely effective at low (10−16M) concentrations.