impedance – Page 2 – TechConnect Briefs

Electrical conductivity studies of nanocrystalline Dy3+ doped SrMoO4 synthesised by sol-gel process

Jena P., Nallamuthu N., Venkateswarlu M., Satyanarayana N., Pondicherry University, IN

Oxygen ion conducting solid electrolytes have many device applications such as sensors, solid oxide fuel cells, oxygen pumps, electrochemical reactors and steam electrolysis cells. Among these, solid oxide fuel cells (SOFCs) have attracted great attention [...]

Surface modification of nanocrystalline LiCoO2 particles with rare earth oxides using polymeric resin process

Nageswara Raoa B., Venkateswarlub M., Satyanarayana N., Pondicherry University, IN

Among the available positive electrode materials, layer structured LiCoO2 is the most preferred one in commercial Li-ion batteries. However, LiCoO2 exhibits a capacity fading at high rates due to its structural instability and reactivity with [...]

Synthesis and electrical conductivity studies of PEO + LiClO4 + TiO2 + MoO3 nanocomposite solid polymer electrolyte

Kumar P.R., Venkateswerlu M., Satyanarayana N., Pondicherry University, IN

The preparative methods have been devised avoid the crystallinity and to improve the conductivity in the PEO polymer solid electrolyte. Recently, enhancement of both electrical and mechanical properties are obtained by adding the various types [...]

Electrical conductivity studies of nanocrystalline Dy3+ doped BaMoO4, synthesised by sol-gel process

Jena P., Nallamuthu N., Venkateswarlu M., Satyanarayana N., Pondicherry University, IN

Solid oxide fuel cells (SOFCs) have attracted great attention in electrochemical devices because of their high energy conversion efficiency, little pollution and widely flexible fuel choices. Scheelite type based oxide ion conducting materials like PbWO4, [...]

Ink-jet printed ZnO Nanoparticle Thin Films for Sensing Applications

Hartner S., Khalil A.S.G., Ali M., Winterer M., Wiggers H., University Duisburg-Essen, DE

Stable aqueous dispersions of ZnO NPs are successfully prepared with a new polymeric stabilizer. The dispersions are stable for at least 2 months without any observable sedimentation. The zeta potential and the size of the [...]

Electrical Properties of Functionalized Silicon Nanoparticles

Hartner S., Gupta A., Wiggers H., University Duisburg-Essen, DE

Phosphorous-doped as well as undoped Si-NPs with a mean particle diameter of about 50 nm were synthesized in a microwave plasma. The natural oxide was removed by etching the particles with hydrofluoric acid. In order [...]

BioMEMS for Mitochondriaa Medicine

Padmaraj D., Zagozdzon-Wosik W., Xie Lei-Ming, Pijanowka D., Miller J.H., Grabiec P., Wosik J., Zagozdzon-Wosik W., University of Houston, US

We designed and fabricated BioMEMS for applications in subcelullar level studies, more specifically for monitoring complementary parameters important in mitochondria medicine.BioMEMS were first simulated using COMSOL 3.4 and then fabricated as an SU-8 based microfluidic [...]

Impedance of Nanoparticles Embedded Electrospun Nanofiber

Chung M., Lan J.W., Lin H-Y, Suen T.W., Cheng S.H., Southern Taiwan University, TW

Electrospinning produces nanofibers with diameters ranging from 100-500 nm under 10-20 KV at 10-20 cm distances, and if these nanofibers were composed of polymers like PVA or PVP, they are usually nonconductive with resistances too [...]

Preparation, Characterisation and Electrical Conductivity studies of

Nallamuthu N., Prakash I., Venkateswarlu M., Satyanarayana N., Pondicherry University, IN

Oxide ion conducting materials are attracting more due to their application in various fields like solid oxide fuel cells, oxygen sensors, oxygen pumps, etc. Doped Scheelite type materials are one of the better oxide ion [...]

Interaction of Polyamido-amine (PAMAM) nanoparticles with the glassy carbon supported bilayer lipid membrane

Jadhav S.R., Mark Worden R., Michigan State University, US

Polyamido-amine (PAMAM) dendrimers are hyperbranched polymers with uniform particle size making them ideal monodisperse nanoparticles. PAMAM dendrimers are being pursued as non-viral vectors for gene delivery due to their low immunogenicity and their ability to [...]