Results 61 to 70 of about 290,242 (293)

Large-radius Holstein polaron and the problem of spontaneous symmetry breaking

, 2014
A translation-invariant solution is found for a large-radius Holstein polaron whose energy in the strong coupling limit is lower than that obtained by Holstein. The wave function corresponding to this solution is delocalized.
Lakhno, V. D.
core   +1 more source

Semi-inclusive charged-pion electroproduction off protons and deuterons: Cross sections, ratios, and access to the quark-parton model at low energies [PDF]

, 2012
A large set of cross sections for semi-inclusive electroproduction of charged pions (π^±) from both proton and deuteron targets was measured. The data are in the deep-inelastic scattering region with invariant mass squared W^2>4 GeV^2 (up to ≈7 GeV^2 ...
Asaturyan, R., Frolov, V. V.
core   +1 more source

Engineering Deformation and Failure in Diamond Triply Periodic Minimal Surface Lattices via 3D Wall‐Thickness Grading

Advanced Engineering Materials, EarlyView.
The work demonstrates that strategic wall‐thickness grading in diamond triply periodic minimal surface lattices enables precise tuning of deformation and failure behavior under compression. Different gradation patterns guide how and where the structure collapses, improving energy absorption or promoting controlled brittle failure.
Giovanni Rizza, Danilo Bruson, Manuela Galati, Luca Iuliano   +3 more
wiley   +1 more source

Low-temperature conductivity of quasi-one-dimensional conductors: Luttinger liquid stabilized by impurities [PDF]

, 2005
A new non-Fermi-liquid state of quasi-one-dimensional conductors is suggested in which electronic system exists in a form of collection of bounded Luttinger liquids stabilized by impurities.
A. E. Mattsson, B. I. Shklovskii, E. M. Lifshits, G. Grüner, H. J. Schulz, M. P. A. Fisher, M. V. Feigel’man, P. Monceau, S. A. Brazovskii, S. A. Brazovskii, S. Barišić, S. Botrić, S. K. Zhilinskii, S. K. Zhilinskii, S. N. Artemenko, S. N. Artemenko, S. N. Artemenko, S. V. Remizov, S. V. Zaitsev-Zotov, S. V. Zaitsev-Zotov, V. F. Gantmakher, V. N. Prigodin, V. N. Prigodin, V. N. Prigodin, V. N. Prigodin   +24 more
core   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

On Integral INICS Aromaticity of Pyridodiazepine Constitutional Isomers and Tautomers

Molecules, 2023
The structure, energetics, and aromaticity of c.a. 100 constitutional isomers and tautomers of pyrido[m,n]diazepines (m = 1, 2; n = 2, 3, 4, 5; m ≠ n) were studied at the B3LYP/cc-pVTZ level.
Małgorzata Jarończyk, Sławomir Ostrowski, Jan Cz. Dobrowolski   +2 more
doaj   +1 more source

Density functional theory of spin-polarized disordered quantum dots

, 2000
Using density functional theory, we investigate fluctuations of the ground state energy of spin-polarized, disordered quantum dots in the metallic regime.
A. Cohen, A.A. Koulakov, B. Tanatar, D. Pfannkuche, F. Simmel, F. Simmel, Fei Zhou, K. Hirose, K.R. Wald, Kenji Hirose, M. L. Mehta, M.A. Kastner, M.C. Payne, Ned S. Wingreen, O. Agam, P.A. Maksym, P.N. Walker, P.N. Walker, R. Berkovits, R. Egger, R.C. Ashoori, S. Levit, S.R. Patel, U. Sivan, W. Kohn, Y.M. Blanter   +25 more
core   +1 more source

Analyzing Electronic Excitations and Exciton Binding Energies in Y6 Films

Advanced Functional Materials, EarlyView.
The Y6 molecule is used for increasing the efficiency of organic solar cells. The exciton binding energy is calculated for ensembles of Y6 molecules that are representative of the typically used films. The calculations show that the excitons typically spread out over many molecules.
Sahar Javaid Akram, Sophie Meißner, Stephan Kümmel   +2 more
wiley   +1 more source

Enhancing Optoelectronic Properties in Phthalocyanine‐Based SURMOFs: Synthesis of ABAB Linkers by Avoiding Statistical Condensation with Tailored Building Blocks

Advanced Functional Materials, EarlyView.
A novel phthalocyanine (PC)‐based metal–organic framework (MOFs) is synthesized using ditopic PC linkers obtained through regioselective statistical condensation. The resulting MOF exhibits significant improvements in electronic absorption, thereby enhancing the material's performance in light harvesting and energy conversion.
Lukas S. Langer, Mareen Stahlberger, Xiaojing Liu, Yi Luo, Niklas E. Häußermann, Puja Singhvi, Yidong Liu, Olaf Fuhr, Martin Nieger, Lars Heinke, Thomas Heine, Christof Wöll, Stefan Bräse   +12 more
wiley   +1 more source

Synthesis of innovative triphenylamine-functionalized organic photosensitizers outperformed the benchmark dye N719 for high-efficiency dye-sensitized solar cells

Scientific Reports, 2022
Herein, we present a thorough photovoltaic investigation of four triphenylamine organic sensitizers with D–π–A configurations and compare their photovoltaic performances to the conventional ruthenium-based sensitizer N719.
Safa A. Badawy, Ehab Abdel-Latif, Ahmed A. Fadda, Mohamed R. Elmorsy   +3 more
doaj   +1 more source