Results 71 to 80 of about 36,891 (198)

Electron transport through dipyrimidinyl-diphenyl diblock molecular wire: protonation effect

, 2006
Recently, rectifying direction inversion has been observed in dipyrimidinyl-diphenyl (PMPH) diblock molecular wire [J. Am. Chem. Soc. (2005) 127, 10456], and a protonation mechanism was suggested to explain this interesting phenomena.
A. Aviram, A. Nitzan, C. Joachim, F. Chen, G. M. Morales, I. I. Oleynik, J. Huang, J. M. Soler, J. P. Perdew, J. Taylor, J. Taylor, Jing Huang, JinLong Yang, M. Brandbyge, M. J. Frisch, M.-K. Ng, M.-K. Ng, N. Troullier, P. Jiang, QunXiang Li, R. Landauer, R. M. Metzger, S. K. Nielsen, X. J. Wu, Y. Girard, Y. Xue, Z. Li, Z. Li, Z. Li, ZhenYu Li   +29 more
core   +1 more source

Tzitzeica Curves According to Modified Orthogonal Frames

Cumhuriyet Science Journal
This paper explores Tzitzeica curves in three-dimensional Euclidean space through the use of modified orthogonal frames constructed via curvature and torsion functions.
Esra Damar
doaj   +1 more source

Gradient catastrophe and flutter in vortex filament dynamics

, 2011
Gradient catastrophe and flutter instability in the motion of vortex filament within the localized induction approximation are analyzed. It is shown that the origin if this phenomenon is in the gradient catastrophe for the dispersionless Da Rios system ...
Agrawal G P, Arnol’d V I, B G Konopelchenko, Batchelor G K, Beltrami E, Beltrami E, Bertola M, Bertola M Tovbis A, Di Francesco P, Eisenhart L P, Forest M G, G Ortenzi, Grinevich P G Schmidt M U, Holm D D Stechmann S N, Kamvissis S, Kodama Y, Konopelchenko B, Konopelchenko B, Konopelchenko B Martínez Alonso L, Martínez Alonso L, Milne-Thompson L M, Ricca R L, Roždestvenskii˘ B L, Saffman P G, Strong S A Carr L D, Thom R, Whitham G B, Zakharov V E, Zakharov V E   +28 more
core   +1 more source

Conjugated Polymer (MEH-PPV:MWCNTs) Organic Nanocomposite for Photodetector Application

مجلة بغداد للعلوم, 2018
Fabrication of a photodetector consists of the conjugated polymer "MEH-PPV"- poly (2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenlenevinylene) and MEH-PPV:MWCNT nanocomposite thin film. The volume ratio investigated was 0.75:0.25.
Baghdad Science Journal
doaj   +1 more source

RECTIFYING CURVES IN THE LIGHTLIKE CONE

Journal of Science and Arts
A curve is called a rectifying curve if its position vector field always lies in its rectifying plane. In the present paper, we investigate the rectifying curves in the lightlike cone Q^2. For this firstly, we determine the curvatures of the rectifying curve in Q^2 .
HASAN DURMAZ, TEVFİK ŞAHİN
openaire   +1 more source

On rectifying slant helices in Euclidean 3-space

, 2016
In this paper, we study the position vectors of rectifying slant helices in $E^3$. First, we have found the general equations of the curvature and the torsion of rectifying slant helices. After that, we have constructed a second order linear differential
Aksoyak, Ferdağ Kahraman, Altunkaya, Bülent, Aytekin, Cahit, Kula, Levent   +3 more
core  

Topics in differential geometry associated with position vector fields on Euclidean submanifolds

Arab Journal of Mathematical Sciences, 2017
The position vector field is the most elementary and natural geometric object on a Euclidean submanifold. The purpose of this article is to survey six research topics in differential geometry in which the position vector field plays very important roles.
Bang-Yen Chen
doaj   +1 more source

A 'p-n' diode with hole and electron-doped lanthanum manganite

, 2001
The hole-doped manganite La0.7Ca0.3MnO3 and the electron-doped manganite La0.7Ce0.3MnO3 undergo an insulator to metal transition at around 250 K, above which both behave as a polaronic semiconductor. We have successfully fabricated an epitaxial trilayer (
Dorr, K., Kobernik, G., Mitra, C., Muller, K-H., Pinto, R., Raychaudhuri, P., Schultz, L.   +6 more
core   +1 more source

Effect of Varying Illumination and Temperature on Steady-State and Dynamic Parameters of Dye-Sensitized Solar Cell Using AC Impedance Modeling

International Journal of Photoenergy, 2013
The steady-state current-voltage curve and dynamic response of a dye-sensitized solar cell (DSSC) is mathematically modeled based on electrical equivalent circuit.
Brijesh Tripathi, Pankaj Yadav, Manoj Kumar   +2 more
doaj   +1 more source

On pseudo null and null cartan darboux helices in minkowski 3-space

Kuwait Journal of Science, 2016
In this paper, we introduce the notion of pseudo null and null Cartan Darboux helicesin Minkowski 3-space. We characterize the Darboux vectors of the pseudo null andthe null Cartan curves in terms of the Darboux helices and the rectifying curves.
Ufuk Öztürk, Emilija Nešović
doaj