Results 141 to 150 of about 46,059 (265)

The documentary as symbolic form

open access: yes, 2009
L’étude sur le documentaire a suscité ces dernières années de nombreuses approches : historique, rhétorique, pragmatique, stylistique. Celles-ci posent la question de la réalité dans le film ou dans la photographie, problématique récurrente du documentaire. C’est à nouveau cette interrogation qui sera abordée dans cette recherche.
openaire   +1 more source

Demagnetization‐Driven Nanoscale Chirality‐Selective Phonon Transport

open access: yesAdvanced Materials, EarlyView.
Chiral heat flow is switched in a ferromagnet/chiral α‐SiO2 heterostructure by controlling the angular momentum of demagnetization‐driven chiral phonons. When phonon handedness matches the crystal chirality, nanoscale thermal transport is enhanced; the opposite handedness suppresses transport, establishing a magnetization‐tunable chiral phonon diode ...
In Hyeok Choi   +8 more
wiley   +1 more source

Highly Sensitive Broadband Photodetectors Based on Donor–Acceptor 2D Conjugated Coordination Polymers

open access: yesAdvanced Materials, EarlyView.
Donor–acceptor molecular design and chemical vapor deposition growth enable the two‐dimensional nickel‐tetraaminobenzoquinone films with strong broadband absorption and efficient charge separation. The resulting photodetectors exhibit a structured broadband response with a high responsivity of ∼3.1 A W−1 and a response time of ∼170 µs, which surpasses ...
Yunxu Chen   +14 more
wiley   +1 more source

Disentangling Polaron Formation Pathways in Y6 by Probing Noninteracting and Interacting Chromophores via Transient Absorption Spectroscopy

open access: yesAdvanced Materials, EarlyView.
The central role of both electronically interacting and noninteracting chromophores in the photogeneration of charges has been unambiguously identified by ultrafast pump‐probe spectroscopy in thin films of the prototypical non‐fullerene acceptor Y6. Onsager‐like autoionization from higher‐energy excitations on Y6 aggregates is found to control polaron ...
Daniel Kroh   +3 more
wiley   +1 more source

Adaptive Supramolecular Interactions Govern Redox‐Active Molecules in Aqueous Redox Flow Batteries

open access: yesAdvanced Materials, EarlyView.
Adaptive supramolecular interactions overcome the solubility‐stability trade‐off in aqueous redox flow batteries. Hydrophobic anions disrupt intrinsic π–π stacking to enable high solubility, while redox‐state‐dependent spin pairing and cation coordination dynamically stabilize reactive intermediates during operation.
Vikram Singh   +12 more
wiley   +1 more source

Mechanically‐Driven Reconstruction of Lithium Metal for Stable All‐Solid‐State Batteries

open access: yesAdvanced Materials, EarlyView.
Mechanical reconstruction reorganizes commercial Li from surface to bulk by refining surface topography, renewing the native passivation layer, and establishing a strongly (200)‐preferred texture. Native‐passivation renewal promotes interfacial Li‐ion transport, whereas texture homogenization regulates the spatial distribution of Li flux and supports ...
Yujian Sun   +2 more
wiley   +1 more source

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