Results 91 to 100 of about 1,855,980 (368)
Grain-surface reactions in molecular clouds: the effect of cosmic rays and quantum tunnelling [PDF]
, 2014 Grain-surface reactions play an essential role in interstellar chemistry, since dust grain catalyses reactions at its surface allowing for the formation of molecules.
L. Reboussin +3 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu +9 more
wiley +1 more source
Quantum corrections to tunnelling amplitudes of neutral scalar fields
European Physical Journal C: Particles and FieldsThough theoretical treatments of quantum tunnelling within single-particle quantum mechanics are well-established, at present, there is no quantum field-theoretic description (QFT) of tunnelling.
Rosemary Zielinski +2 more
doaj +1 more source
Tunneling current modulation in atomically precise graphene nanoribbon heterojunctions
Nature Communications, 2021 Here, the authors characterize the spectroscopic and transport properties of heterojunctions composed of quasi-metallic and semiconducting graphene nanoribbons (GNRs) with different widths, showing a predominant quantum tunnelling mechanism.
Boris V. Senkovskiy +22 more
doaj +1 more source
Phase Coherence in a Driven Double-Well System
, 2004 We analyze the dynamics of the molecular field incoherently pumped by the photoassociation of fermionic atoms and coupled by quantum tunnelling in a double-well potential.
A. L. Fetter +6 more
core +1 more source
Advanced Functional Materials, EarlyView.A solvent‐free mechanochemistry‐enabled supramolecular engineering strategy is developed to directly synthesize covalent‐interconnected two‐dimensional atomic‐layered carbon nitride nanosheets photocatalyst, bypassing conventional top‐down exfoliation requirements.
Fanglei Yao +7 more
wiley +1 more source
Multiple quasiparticle Hall spectroscopy investigated with a resonant detector
New Journal of Physics, 2014 We investigate the finite frequency (FF) noise properties of edge states in the quantum Hall regime. We consider the measurement scheme of a resonant detector coupled to a quantum point contact in the weak-backscattering limit. A detailed analysis of the
D Ferraro +3 more
doaj +1 more source
Addressing student models of energy loss in quantum tunnelling
, 2005 We report on a multi-year, multi-institution study to investigate student reasoning about energy in the context of quantum tunnelling. We use ungraded surveys, graded examination questions, individual clinical interviews, and multiple-choice exams to ...
Bao L +10 more
core +1 more source
Advanced Functional Materials, EarlyView.This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva +9 more
wiley +1 more source
Spatial non-adiabatic passage using geometric phases
EPJ Quantum Technology, 2017 Quantum technologies based on adiabatic techniques can be highly effective, but often at the cost of being very slow. Here we introduce a set of experimentally realistic, non-adiabatic protocols for spatial state preparation, which yield the same ...
Albert Benseny +4 more
doaj +1 more source