Results 61 to 70 of about 491,968 (243)

Beyond the Edge: Charge‐Transfer Excitons in Organic Donor‐Acceptor Cocrystals

open access: yesAdvanced Functional Materials, EarlyView.
Complex excitonic landscapes in acene–perfluoroacene cocrystals are unveiled by polarization‐resolved optical spectroscopy and many‐body theory. This systematic study of a prototypical model system for weakly interacting donor–acceptor compounds challenges common views of charge‐transfer excitons, providing a refined conceptual framework for ...
Sebastian Anhäuser   +6 more
wiley   +1 more source

How to go online: considerations of designing an online course - technical options, didactical methods and the students [PDF]

open access: yes, 2007
This paper addresses the task of designing an online course. Which considerations have to be made? Many factors have to be regarded: technical options, the didactical design, the institution, the subject of the courses and the students. This task becomes
Bremer, Claudia
core  

Halide‐Dependent Photoluminescence and Heavy‐Atom Effects in Low‐Melting Organic–Inorganic Manganese Halides

open access: yesAdvanced Functional Materials, EarlyView.
Two pyridinium‐based ionic liquid templated hybrid manganese halides, (C4Py)2[MnCl4] and (C4Py)2[MnBr4], display similar bulk structures but show significantly different photoluminescence behaviors due to the bromine heavy‐atom effect. Their stable local Mn environments remain intact even in the molten state, allowing applications such as luminescence ...
Biswajit Bhattacharyya   +22 more
wiley   +1 more source

Prospects on Innovating Organizations [PDF]

open access: yes
We aim to give the main rationale to create products and/or services in a state-of-mind associating every stakeholder in the frame of a reactive and networked organization. This implies a value-chain from basic research to users needs, the starting point
Benchimol, Guy
core   +1 more source

What are communities of practice? A comparative review of four seminal works

open access: yes, 2005
This paper is a comparative review of four seminal works on communities of practice. It is argued that the ambiguities of the terms community and practice are a source of the concept's reusability allowing it to be reappropriated for different purposes ...
A. Cox   +36 more
core   +1 more source

Spatially Modulated Morphotropic Phase Boundaries in a Compressively Strained Multiferroic Thin Film

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT The coexisting rhombohedral‐like (R′, MA) and tetragonal‐like (T′, MC) monoclinic phases in compressively strained bismuth ferrite thin films exhibit exceptional piezoelectric and magnetic properties. While previous studies have largely focused on probing the morphotropic phase boundaries (MPBs) comprising ordered R′/T′ twins, their self ...
Ting‐Ran Liu   +7 more
wiley   +1 more source

Concurrent collaboration in research and development [PDF]

open access: yes, 2008
Integration is the essence of current research and development (R&D) activity in many organizations. Integration can be established in various ways depending on the type, size and intricacy in organizational functions and products. Nevertheless, research
Ahmed, S.   +2 more
core   +3 more sources

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

open access: yesAdvanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu   +3 more
wiley   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

open access: yesAdvanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

How Can Medicare Lead Delivery System Reform? [PDF]

open access: yes, 2009
Explores options and design issues for reforming the fee-for-service payment system to encourage better, more efficient health care through greater accountability for specific populations and totality of care.
Francis J. Crosson   +4 more
core  

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