Results 81 to 90 of about 30,364 (194)

Why polymer chains in a melt are not random walks

, 2007
A cornerstone of modern polymer physics is the `Flory ideality hypothesis' which states that a chain in a polymer melt adopts `ideal' random-walk-like conformations.
A Johner, A. N Semenov, Baschnagel J., Beckrich P., Curro J. G., De Gennes P.-G., Doi M., Flory P. J., H Meyer, Higgins J. S., J Baschnagel, J. P Wittmer, P Beckrich, Paul W., S. P Obukhov, Schäfer L.   +15 more
core   +2 more sources

Valuation Ideal Factorization Domains

An integral domain $D$ is a valuation ideal factorization domain (VIFD) if each nonzero principal ideal of $D$ can be written as a finite product of valuation ideals. Clearly, $π$-domains are VIFDs. In this paper, we study the ring-theoretic properties of VIFDs and the $*$-operation analogs of VIFDs. Among them, we show that if $D$ is treed (resp., $*$-
Chang, Gyu Whan, Reinhart, Andreas
openaire   +2 more sources

The Impact of Gravity and Molecular Diffusion on the Compositional Gradient in Gas Reservoirs [PDF]

, 2010
Imperial Users ...
Onochie, Obidi C, Onochie, Obidi C
core  

Rectification Behavior Evaluation of Si Cone Diodes in Dependence of Contact Metallization and Printable Nanoparticle Thin Film Modification

IEEE Access
Recently, we were able to demonstrate Si cone Schottky diodes processed from printable nanoparticle dispersion which can operate at switching speeds well beyond 4 GHz.
Fabian Langer, Niels Benson
doaj   +1 more source

Generalized comaximal factorization of ideals

Journal of Algebra, 2012
Let \(R\) be a commutative ring with nonzero identity. A comaximal factorization of a proper ideal \(I\) of \(R\) is a product \(I = I_1 \cdots I_n\) of proper ideals \(I_1, \ldots, I_n\) of \(R\) with \(I_i + I_j = R\) for \(i \neq j\). Early work on comaximal factorizations goes back to E. Noether.
openaire   +1 more source

Analysis of fill factor losses in thin film CdS/CdTe photovoltaic devices

Moldavian Journal of the Physical Sciences, 2010
In this paper, CdS/CdTe solar cells with conversion efficiency values of η = 5.1, 3.6, 3.5, and 2.9% are analyzed and the effects of the device parameters, such as the diode ideality factor (n), the saturation current-density (Jo), and the series ...
Potlog, Tamara, Spalatu, Nicolae, Ciobanu, Vasile, Hiie, J., Mere, Arvo, Mikli, V., Valdna, V.   +6 more
doaj  

Investigation of Current-Voltage Characteristics of Ni/GaN Schottky Barrier Diodes for Potential HEMT Applications [PDF]

Журнал нано- та електронної фізики, 2011
In the present work, the I-V characteristics of Ni/GaN Schottky diodes have been studied. The Schottky diodes, having different sizes using Ni/Au and ohmic contacts using Ti/Al/Ni/Au were made on n-GaN.
Ashish Kumar, Seema Vinayak, R. Singh
doaj  

Over 600 V Lateral AlN-on-AlN Schottky Barrier Diodes with Ultra-Low Ideality Factor

Applied Physics Express
This letter reports the demonstration of lateral AlN Schottky barrier diodes (SBDs) on single-crystal AlN substrates by metalorganic CVD (MOCVD) with an ultra-low ideality factor ( η ) of 1.65, a high Schottky barrier height of 1.94 eV, a breakdown ...
Dinusha Herath Mudiyanselage, Dawei Wang, Bingcheng Da, Ziyi He, Houqiang Fu   +4 more
doaj   +1 more source

Investigation into charge carrier dynamics in organic light-emitting diodes

Nano Research Energy
Organic light-emitting diodes (OLEDs) have demonstrated remarkable advancements in both device lifetime and luminous efficiency. However, insufficient operation lifetime due to device degradation remains a major hurdle, especially for brighter devices ...
Dong-Guang Zheng, Hyeon-Dong Lee, Gyeong Won Lee, Dong-Soo Shin, Jeongwon Kim, Jong-In Shim, Zhiqun Lin, Tae-Woo Lee, Dong Ha Kim   +8 more
doaj   +1 more source

Automatic Algorithm Based on Simpson Seventh-Order Integration of Current Minus Short-Circuit Current: Extracting Photovoltaic Device Parameters Within One-Diode Model

Algorithms
Simpson’s seventh-order integration has been implemented in an automatically executable program to integrate the current minus the short-circuit current.
Victor-Tapio Rangel-Kuoppa
doaj   +1 more source