Results 271 to 280 of about 16,024 (306)

Organic insulating films of nanometer thicknesses

Applied Physics Letters, 1996
It is demonstrated that monolayers of organic molecules (long chain hydrocarbons) as thin as 1.9 nm, deposited by the self-assembly technique on silicon, form high performance electrically insulating barriers. Their properties are compared with those of silicon dioxide. Leakage current densities through the organic monolayers of the order of 10−8–10−7A/
D. Vuillaume, C. Boulas, J. Collet, J. V. Davidovits, F. Rondelez   +4 more
openaire   +1 more source

The nature of the insulating state in organic superconductors

Synthetic Metals, 2001
We review our recent proposal for a unified, microscopic, many-body theory for the 2:1 organic charge transfer solids (CTS), which range from nearly 1D to strongly 2D in electronic character. Our theory predicts an insulating bond-charge density wave (BCDW) ground state in the limit of exact 1/4-filling for all anisotropies, consistent with ...
S. Mazumdar, R.T. Clay, D.K. Campbell
openaire   +1 more source

Effect of Thickness on the Breakdown Characteristics of Organic Insulation Materials under Microsecond Pulse Voltage

Energies
Thickness affects the electrical breakdown strength (EBD) of insulation materials, and the variation of EBD with thickness (d) is an important basis for insulation design.
Xudong Li, Yuefang Li
exaly   +2 more sources

Organic plastics as insulating materials

Electrical Engineering, 1943
Recent developments in new types of plastics and improved manufacturing techniques of older types are enabling these materials to assume an increasingly important role in the field of electrical insulation. Their electrical characteristics are reviewed here.
openaire   +1 more source

Theory of injection photovoltages in organic insulators

Australian Journal of Chemistry, 1976
Development of an open-circuit photovoltage, U, in an organic insulator by photoinjection of charge carriers from the electrodes is treated theoretically. In the single-carrier case (both electrodes injecting the same carrier) it is shown that, in the absence of surface traps, U increases at a rate of 60 mV per decade of light intensity, II, above a ...
openaire   +3 more sources

Ceramic and organic insulators for fusion applications

Journal of Nuclear Materials, 1981
Abstract Fusion insulator requirements, operating conditions, and anticipated performance of candidate materials are reviewed, with emphasis on recent developments. Critical problem areas are highlighted, and research and development activities needed to meet the demands of advanced fusion devices are identified.
F.W. Clinard, G.F. Hurley
openaire   +1 more source

Electret formation in organic insulating polymers

Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1973, 1973
It has been known for a long time that after application or removal of a field across a metal-dielectric-metal sandwich a current decreasing with time flows in the external circuit. The absorption currents which flow in polymers on application or removal of a field can be attributed to a number of polarization processes such as an orientation of ...
D. K. Das Gupta, K. Joyner
openaire   +1 more source

Organic Insulating Films at Nanometer Scale

MRS Proceedings, 1996
AbstractWe discuss the electrical and photo-electrical properties of monolayers of long hydrocarbon chains (alkyltrichlorosilane molecules) self-assembled on a silicon substrate. It is shown that these monolayers (<3 nm thick) act as high quality insulators : DC conductivity through the monolayers are in the 10-15 S/cm range, energy barrier heights ...
openaire   +1 more source

Effects of Insulation Thickness on the Aging of Organic Insulation in Air [includes discussion]

Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1956
Organic insulations composed of paper or cloth base with phenolic or black asphaltic varnish impregnant are shown by extensive tests to have an aging rate in air dependent on the insulation thickness. A change in insulation thickness from that representative of turn insulation to that used for a major voltage barrier may increase its useful life in air
L. C. Whitman, A. L Scheideler
openaire   +1 more source

Organic semiconductor interfaces with insulators and metals

2009
Die elektronischen Wechselwirkungen von organischen Halbleitern nach der Selbstanordnung auf Metallen, oxidierten Metallen und ultradünnen Isolatoroberflächen wurden mit Hilfe von komplementären Messmethoden wie Rastertunnelmikroskopie und -spektroskopie, Beugung niederenergetischer Elektronen, Röntgenphotoelektronen und Ultraviolett Photoelektronen ...
openaire   +1 more source