Current Smart Materials - Volume 2, Issue 1, 2017

Background: Electrorheological (ER) fluids are composed of polarizable particles dispersed in insulating oil. The creep-recovery test can be applied to ER fluids to reveal the viscoelastic response of the dispersed particles which depend on conductivity of particles, amount of applied stress, magnitude of electric field strength, and particle volume fraction. In this study, ER properties of the Polyaniline/bentonite (PAni/BNT) part Read More

Background: Electrorheological fluids, when subjected to an external electric field, show radical and reversible changes in their physical properties: Rheological, thermal, electrical - as a result of the structuring of the dispersed phase particles. This article presents the results of experimental studies of the viscoelastic properties of high-concentrated electrorheological fluids with complex dispersed phase in a pre-yield area und Read More

Background: Efficiency of the individual electrorheological materials is evaluated through their electrorheological characteristics. However, these characteristics are obtained using not only various geometries (plate-plate or concentric cylinders) but also completely different generation of an applied electric field. Objective: Responsibility (comparison) of an electrorheological characterization by the individual measurements. M Read More

Background: Recently, core-shell typed electrorheological particles have been developed and become a research focus. In this work, monodisperse polystyrene/poly(2-methylaniline) core-shell microspheres were prepared and the shell morphology were adjusted to either smooth or urchin-like. Therefore, the influence of surface morphology on electrorheological effect was studied by comparing the electrorheological properties Read More

Background: Layered inorganic materials are important candidates as smart electrorheological (ER) materials because of their low cost and anisotropic morphology. However, the ER effect of most of layered materials is too weak to satisfy the requirement of applications. This paper reported a new kind of layered ER material based on polyaniline-intercalated titanate nanoplates (PANITNP). We presented the preparati Read More

Background: Materials like ZnO, TiOx, ZnS have wide applications in energy technology especially in device and sensor applications. Determination of mechanical properties like hardness, toughness and adhesion of these materials deposited in the form of thin films is possible through nanoindentation and scratch test. The assessment of these mechanical properties improves the quality of application of the oxide and s Read More

Background: Emission of Secondary electron from material surface is the key parameter which defines all properties of plasma bounded by that surface. In dc glow discharge plasmas, these emitted electrons from the cathode provide the necessary feedback to sustain the discharge. There are various processes responsible for emission of electron from the cathode surface. The most dominant among these processes are b Read More

Background: As a kind of intelligent materials, electrorheological (ER) fluids have been researched increasingly deeply and widely. Dynamic viscoelastic property is an innate and important property of EF fluids, which can be controlled by external electric field strength (E). However, viscoelasticity of zeolite-based ER fluids has not been researched deeply in small strain under enhanced E. Methods: This work is focuse Read More

Background: We explored the profiles of binding energy (BE) and interband emission energy (IEE) of impurity doped quantum dots (QDs) in presence and absence of Gaussian white noise. In this context, change of BE and IEE by varying several pertinent parameters such as electric field, magnetic field, confinement potential, dopant location, dopant potential and aluminium concentration had also been carried out. Metho Read More

Background: The Thermoelectric (TE) materials and devices have been receiving much attention over past few decades due to their capacity and conversion between electrical energy and heat energy. The performance of thermoelectric materials can be estimated by the dimensionless figure of merit (ZT) and it is expressed as, ZT = σ S2T /Κ. So researchers are seeking for TE materials with high figure of merit. It is well known Read More