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Electricity electrochemical

Free radical initiation can occur through application of heat (thermal), UV and visible light (photochemical), ionizing light, redox reagents, electricity (electrochemical), etc., that is any process that creates the essential free radicals. [Pg.173]

This volume, based on the symposium Photoeffects at Semiconductor-Electrolyte Interfaces, consists of 25 invited and contributed papers. Although the emphasis of the symposium was on the more basic aspects of research in photoelectrochemistry, the covered topics included applied research on photoelectrochemical cells. This is natural since it is clear that the driving force for the intense current interest and activity in photoelectrochemistry is the potential development of photoelectrochemical cells for solar energy conversion. These versatile cells can be designed either to produce electricity (electrochemical photovoltaic cells) or to produce fuels and chemicals (photoelectrosynthetic cells). [Pg.423]

As previously discussed, neighboring nephrons can also influence one another through vascular propagated electrical (electrochemical) signals. To account for this mechanism, the total activation potential for k-th nephron is assumed to be the sum of contributions from all other nephrons in the tree. Moreover, the electrical activation potentials are assumed to propagate along the vascular wall with an exponential decay. In this way, the vascular propagated interaction is delivered to each nephron as an additional part of its activation potential xjr. [Pg.345]

Because of expected electrical, electrochemical, optical, chemo-sensor, and other properties of the ball-type Pcs, several metallo and metal-free ball-type Pcs with different linkers have been reported. Metallo and metal free ball-type Pcs containing four calyx[4]arene units as linkers have been synthesized, Fig. 1 [37], The structures of compounds 1-3 were confirmed by UV-vis, IR, 1II-NMR, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS), and elemental analysis. Because of their unique structure and versatile complexation properties [38], calixarenes were found to be one type of interesting compounds to be incorporated into Pc. The cone conformation of the t-butylcalix[4]arene direct... [Pg.107]

Sugalski R. General electric. Electrochemical cell having cast-in-place insulator. US patent /4320182. [Pg.465]

Figure 15 Types of electrical/electrochemical cell with polarity conventions shown (a) power supply driving a resistor, (b) battery driving resistor, (c) power supply recharging a driven battery, (d) corrosion cell as a nearly short-circuited driving system. The resistance represents the electrical resistance in the metal between anode and cathode sites. Figure 15 Types of electrical/electrochemical cell with polarity conventions shown (a) power supply driving a resistor, (b) battery driving resistor, (c) power supply recharging a driven battery, (d) corrosion cell as a nearly short-circuited driving system. The resistance represents the electrical resistance in the metal between anode and cathode sites.
Electrochemistry — Electrochemistry, as the name suggests, is a branch of chemical science that deals with the interrelation of electrical and chemical phenomena [i]. From the very beginning electrochemistry covers two main areas the conversion of the energy of chemical reactions into electricity (electrochemical power sources) and the transformations of chemical compounds by the passage of an electric current (-> electrolysis). [Pg.197]

With the stoichiometry ZrSej 94, zirconium diselenide is a semiconductor with an empty tjg band ( 16.4.3.1). The LijZrSej 94 intercalation compounds show a phase transition when x reaches 0.40. A continuous filling of the octahedral sites of the van der Waals gap (see Fig. 1, 16.4.3.1.) is observed over the whole composition domain (0 < X < 1) according to a classical CdIj-NiAs transition. Electrical, electrochemical, magnetic, NMR and EPR measurements affirm that it is a purely electronic transition. Below X = 0.40 the electrons are localized on zirconium centers, reducing Zr ions Zr above x = 0.40 a metallic behavior is observed. [Pg.505]

The main purpose of incorporating second phase to polymer matrix is to enhance properties of materials and use them for various applications. The hierarchical structures of polymer composites were also developed for better performances of electronic devices based on them. Here, the mechanical, electrical, electrochemical and electroluminescent, as well as the sensing properties of polymer composites were summarized. [Pg.127]

Liew, C. W., S. Ramesh, and A. K. Arof. 2014. Good prospect of ionic liquid based-polyfvinyl alcohol) polymer electrolytes for supercapacitors with excellent electrical, electrochemical and thermal properties. International Journal of Hydrogen Energy 39 2953-2963. [Pg.249]

In electrical/electrochemical impedance, it is common practice to represent the system under study by an electrical equivalent circuit, in which a combination of resistors, capacitors, and inductors represents the physical components of the system. For the system as a whole, the impedance is the quotient of the applied potential (the... [Pg.234]

Yang L, Bashir R (2008) Research review paper electrical/electrochemical impedance for rapid detection of foodbome pathogenic bacteria. Biotechnol Adv 26(2) 135-150... [Pg.1361]

If a Lab-on-a-Chip is defined to be a unit that should be able to perform all chemical functions and detection in a monolithic device that fits in the palm of one s hand (or smaller), then existing Lab-on-a-Chip units are generally still quite underdeveloped. This miniaturization will require increased integration not only of fluidic elements but also of electrical, optical, or other types of elements. The major criteria that lead the choice of a detection scheme are the properties of the analyte (optical, electrical, electrochemical, and physical), the composition of the sample (do the analytes have similar properties and/or similar concentrations ), and the required... [Pg.1519]

Eq. (7.5-14) is the famous Darcy equation with B being the specific permeability coefficient. The Darcy equation implies that the flow mechanism is by viscous drag and the fluid is inert to the porous medium, that is the effects of chemical, adsorptive, electrical, electrochemical interactions between fluid molecules and the capillary are absent (Carman, 1956). [Pg.374]

In general, one can insert one or more types of fillers in polymeric matrices aiming for a unique combination of properties, and these fillers may present diflerent chemical and physical properties, and also broad dimensional range these fillers can present no dimension (i.e. nanoparticles), be unidimensional (nanotubes), bidimensional (coatings and lamers) or tridimensional (tridimensional nets or macroparticles). " The inclusion of these fillers in vulcanized NR, generating composite or nanocomposite materials, gives to these materials different structural, chemical, physical, thermal, electric, electrochemical, optical and magnetic properties. ... [Pg.457]

Most of the time, this impedance is measured by electric (electrochemical) techniques and is thought of as an electric property of diffusing substances. [Pg.459]

Chemical, physical, electrical, electrochemical, metallurgical, and mechanical factors often affect corrosion initiation and kinetics. [Pg.89]

As a result of such temporal instability, in spite of the wide range of chemical sensor prototypes based on polymer films, very few have found their way onto the market. Though they may have excellent analytical qualities, the devices are often unsuitable for industrial fabrication, either because of low technological effectiveness of the fabrication process or insufficient reliability and stability. This means that to utilize the advautages of some polymers, such as a rare combination of electrical, electrochemical, and physical properties, it is necessary to increase their processability as well as their temporal, environmental, and thermal stability (Kumar and Sharma 1998). [Pg.243]

Polyaniline was first discussed almost 100 years ago and has been shown to be an unusually soluble and stable conducting polymer in the last decade. Much of this recent work has been conducted by MacDiarmid et al.l0,il A wide range of attractive electrical, electrochemical and optical properties, coupled with good stability, make PA potentially useful in electronic applications. ... [Pg.214]

In recent decades, there have been many attempts to fabricate CNT/PANI composites [329-337]. The incorporation of nanotubes into PANI can result in novel composite materials with enhanced electrical, electrochemical, and mechanical properties. Eor example, Yu et al. prepared MWCNT/PANI nanocomposites through in situ inverse microemulsion synthesis [334]. Such nanocomposites are characterized by very strong interaction between MWCNTs and conducting polymers. Moreover, MWCNT/PANI core-shell nanowires exhibited better thermal stability and electrical conductivity than the pure PANI. The electrical conductivity of MWCNT/PANI composite containing 1 wt% of MWCNTs increased by one order of magnitude (pure PANI 0.02Scm MWCNT/PANI composite 0.20Scm-i) [334]. [Pg.271]


See other pages where Electricity electrochemical is mentioned: [Pg.44]    [Pg.341]    [Pg.299]    [Pg.156]    [Pg.529]    [Pg.193]    [Pg.225]    [Pg.180]    [Pg.44]    [Pg.190]    [Pg.276]    [Pg.356]    [Pg.32]    [Pg.44]    [Pg.7]    [Pg.18]    [Pg.346]    [Pg.317]    [Pg.8]    [Pg.2403]    [Pg.529]    [Pg.22]    [Pg.43]    [Pg.3422]    [Pg.4517]    [Pg.223]   
See also in sourсe #XX -- [ Pg.504 ]




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