The authors have applied an advanced set of auto-regressive tools for identifying potentially complex, linear and nonlinear relationships in data, wherein the underlying physical relationships are not well described. In this paper these tools and techniques are described in detail, and the results of the application of these tools to evaluation of diesel engine lubricating oil health (based on ...

The electrochemical stability of Li6.5La3Zr1.5Nb0.5O12 (LLZNO) and Li6.5La3Zr1.5Ta0.5O12 (LLZTO) against metallic Li was studied using direct current (DC) and electrochemical impedance spectroscopy (EIS). Dense polycrystalline LLZNO (ρ = 97%) and LLZTO (ρ = 92%) were made using sol–gel synthesis and rapid induction hot-pressing at 1100°C and 15.8 MPa. During DC cycling tests at room temperature...

Abstrac t This paper describes the latest major improvement made to gene expression programming (GEP) for use in impedance spectroscopy. This change consists on systematically analysing the fittest element of each population of the GEP to identify circuit components that are useless in the sense that they do not significantly contribute to the impedance response at the analysed frequency range....

Megasonic energy assisted wet cleaning is traditionally used for removal of particulate contaminants from wafer and mask surfaces in semiconductor industry. One of the major issues associated with megasonic cleaning is the damage caused to fragile features due to transient cavitation. Development of a method to monitor transient cavitation events in solutions irradiated with sound energy will a...

Graphene is a promising material possessing features relevant to bioelectronics applications. Graphene microelectrodes (GMEAs), which are fabricated in a dense array on a flexible polyimide substrate, were investigated in this work for their performance via electrical impedance spectroscopy. Biocompatibility and suitability of the GMEAs for extracellular recordings were tested by measuring elec...

Copper-bearing intrauterine devices(Cu-IUDs) are being increasingly used all over the world. However, the dissolution of copper in the presence of proteins is not well characterized. Here, with open circuit potential, electrochemical impedance spectroscopy measurements and potentiodynamic polarization test, the corrosion behavior of copper samples in different single-protein simulated uterine s...

In the previous chapter we have described an experimental technique which allows us to measure the local temperature of the sample under the application of a strong electric field.. We have also described setups for electrical impedance measurement and optical studies. In this chapter we present experimental results obtained using these techniques to study the electric field effect on the nemat...

Two dielectric relaxation loss peaks associated with oxygen-ion diffusion in the intergrowth Bi2WO6–Bi3TiNbO9sBi5TiNbWO15d bismuth layered ferroelectrics were observed. The activation energy and the relaxation time at infinite temperature, for these two peaks, were determined to be s0.89 eV, 1.3310−13 sd and s0.84 eV, 3.6310−10 sd. The ac impedance spectroscopy indicated that the Bi5TiNbWO15 ce...

We evaluated the dielectric permittivity and impedance characteristics of high dielectric constant polymer composite films. Such materials are being investigated by the electronic industry in response to the growing need for efficient integrated powerground de-coupling capacitance in microwave circuits and fast switching devices. In order to extend the dielectric measurements to the microwave r...