The electrical conductivity of metals

Part 1 book "Electrical atomic force microscopy for nanoelectronics" includes content: The atomic force microscopy for nanoelectronics; conductive afm for nanoscale analysis of high K dielectric metal oxides; mapping conductance and carrier distributions in confined three dimensional transistor structures; scanning capacitance microscopy for two dimensional carrier profiling of semiconductor devices; oxidation and thermal scanning probe lithography for high resolution nanopatterning and nanodevices.

192p dianmotminh00 22-04-2024 9 4   Download

Continued part 1, part 2 of ebook "Solid-state physics: An introduction to principles of materials science" provides readers with contents including: motion of electrons and transport phenomena; superconductivity; dielectric properties of materials; semiconductors; cyclotron resonance in semiconductors; semiconductor epitaxy; preparation of nanostructures;...

293p dangsovu 20-10-2023 4 3   Download

Electroactive poly(1,8-diaminonaphthalene) is known to have a high affinity for metal ions thanks to amine and imine groups in the polymer chain. However, electrochemical sensors based on pristine P(1,8-DAN) have a major drawback concerning its poor electrical conductivity.

11p viannee 02-08-2023 6 3   Download

In this paper, the effect of copper metal powder and epoxy resin mixture on the fabrication process of the conductive glue system as electrical contact part of the brush to the engine on the naval battleship was studied.

6p viirenerosenfeld 26-05-2022 17 3   Download

New polymeric phthalocyanine moieties (M = 2H, Zn, Ni, Cu, and Co) were synthesized via polytetracyclomerization reaction of o-bis[3-(3,4-dicyanophenoxy)propyloxy]benzene (3), which can be obtained by the reaction of 4-nitrophthalonitrile with o-bis[(3-hydroxypropyl)oxy]benzene. Aggregation and disaggregation behavior of the polymeric phthalocyanine (5) was studied with some alkali and earth alkali metal cations. Measured intrinsic viscosities of the polymeric phthalocyanines exhibited a substantial decreasing tendency with dilution of the solution.

18p langthannam 29-12-2021 5 0   Download

Active-matrix thin film transistors (TFTs) on glass substrates with a metal backplane, that are applied for flat panel displays, can be considered as a metamaterial absorber. In this study, TFT structures using doped silicon at source, drain, and channel terminals are investigated. These terminals are unchanged in size of 75 µm square and thickness of 5.3 µm. The electric conductivity is varied at the channel.

6p koxih_kothogmih5 04-09-2020 36 4   Download

Failure in power transformer can be catastrophic to electric systems, since transformers play a vital role in the power sector. Metallic particles in transformer oil lead to Partial discharge which can result in serious conditions.

8p lucastanguyen 01-06-2020 16 1   Download

The findings of present study suggested that the pH in soils neutral to slightly alkaline safe in electrical conductivity and low to medium in organic carbon content. Metals concentration was below the permissible limits at 200,400,600 and 800 m, from both side of Omati Nala, in rainy and winter seasons, respectively. In water, pH ranged from 6.5 to 8.5 and EC under permissible range. However, Pb and Cr were comparatively higher than the Indian permissible limits. The concentration of Ni, Cr and Cd in rice, wheat and Brinjal was higher than the limit given by WHO/Indian standard.

27p nguaconbaynhay1 08-12-2019 15 2   Download

Polypyrrole Sn(IV) phosphate, an organic–inorganic composite cation-exchanger was synthesized via sol-gel mixing of an organic polymer, polypyrrole, into the matrices of the inorganic precipitate of Sn(IV) phosphate.

9p kethamoi1 20-11-2019 13 0   Download

Liquid alloy systems have a high degree of thermal conductivity, far superior to ordinary nonmetallic liquids and inherent high densities and electrical conductivities. This results in the use of these materials for specific heat conducting and dissipation applications for the nuclear and space sectors. Uniquely, they can be used to conduct heat and electricity between nonmetallic and metallic surfaces.

10p minhxaminhyeu4 26-06-2019 28 0   Download

The metallic character of the electronic transport in both asymmetric and symmetric ZGNRs has been established: the current has a semiconductor behavior, with negative differential resistance (NDR) effect. Symmetric SW defect, as a most unfavorable SW defect type for electric conductance, remarkably reduces the current values, but does not change the character of conductivity in both the asymmetric and symmetric ZGNRs. NDR has been explained by the SW defect-induced alteration of the number of frontier molecular orbitals entering bias windows.

16p thuyliebe 08-10-2018 19 1   Download

(BQ) The adequate selection of manufacturing conditions is one of the most important aspects to take into consideration in the die-sinking electrical discharge machining (EDM) of conductive ceramics, as these conditions are the ones that are to determine such important characteristics as: surface roughness, electrode wear (EW) and material removal rate, among others. In this work, a study was carried out on the influence of the factors of intensity (I), pulse time (ti) and duty cycle (η) over the listed technological characteristics.

7p xuanphuongdhts 27-03-2017 34 1   Download

Electrical hazard, safety-toe shoes are nonconductive and will prevent the wearers’ feet from completing an electrical circuit to the ground. These shoes can protect against open circuits of up to 600 volts in dry conditions and should be used in conjunction with other insulating equipment and additional precautions to reduce the risk of a worker becoming a path for hazardous electrical energy.

46p dacotaikhoan 25-04-2013 51 1   Download

This dissertation will outline solution processable materials and fabrication techniques to manufacture flexible electronic devices from them. Conductive ink formulations and inkjet printing of gold and silver on plastic substrates were examined. Line patterning and mask printing methods were also investigated as a means of selective metal deposition on various flexible substrate materials. These solution-based manufacturing methods provided deposition of silver, gold and copper with a controlled spatial resolution and a very high electrical conductivity.

0p quynho77 13-11-2012 55 4   Download

Mercury has a number of unique and fascinating properties. It is the only metal that, in its pure form, is a liquid at room temperature. Liquid mercury is volatile, meaning that it evaporates easily to form a poisonous vapour. Mercury conducts electricity and expands at a constant rate in response to changes in pressure or temperature. Electrical switches, barometers and thermometers take advantage of these properties.

92p yeurauxanh88 01-10-2012 51 4   Download

If we connect a battery across a body, there is a movement of free electrons towards the positive end. This movement of electrons is an electric current. All materials can be classified into three groups according to how readily they permit an electric current to flow. These are: conductors, insulators, and semiconductors. In the first category are substances which provide an easy path for an electric current. All metals are conductors, however some metals do not conduct well. Manganin, for example, is a poor conductor. Copper is a good conductor, therefore it is widely used for cables.

58p cancuongchi 03-08-2012 217 63   Download

The use of intelligent materials which are capable of reacting to external stimuli is growing in the field of textiles. Conductive materials, metals as well as conducting polymers, are already being used in many textile applications, like antistatic materials, electromagnetic interference shielding, heating, transport of electrical signals, sensors etc.

252p nhatkyvodanh 24-07-2012 67 10   Download

Metals are used as biomaterials due to their excellent electrical and thermal conductivity and mechanical properties. Since some electrons are independent in metals, they can quickly transfer an electric charge and thermal energy. The mobile free electrons act as the binding force to hold the positive metal ions together. This attraction is strong, as evidenced by the closely packed atomic arrangement resulting in high specific gravity and high melting points of most metals.

262p 951628473 07-05-2012 115 27   Download

semiconductors.In the first category are substances which provide an easy path for an electric current. All metals are conductors, however some metals do not conduct well. Manganin, for example, is a poor conductor. Copper is a good conductor, therefore it is widely used for cables. A non-metal which conducts well is carbon. Salt water is an example of a liquid conductor. A material which does not easily release electrons is called an insulator. Rubber, nylon, porcelain and air are all insulator. There are no perfect insulators.

95p augi19 01-03-2012 399 92   Download

The Chemistry of Silver Copper, silver, and gold form group 1B of the periodic table, and together they are known as the ‘coinage metals’. Silver, like gold and the six platinum group metals (platinum, palladium, rhodium, ruthenium, iridium, and osmium), is a noble metal. Silver has the highest electrical conductivity and the highest thermal conductivity of any metal, as well as the lowest electrical contact resistance (Table 1).

7p congdat261 02-12-2010 78 11   Download