Impact of Phonon Dispersion on Nonlocal Electron–Phonon Couplings in Organic Semiconductors: The Naphthalene Crystal as a Case Study

2017 ◽  
Vol 122 (1) ◽  
pp. 44-49 ◽  
Author(s):  
Zeyi Tu ◽  
Yuanping Yi ◽  
Veaceslav Coropceanu ◽  
Jean-Luc Brédas
Keyword(s):  
Organic Semiconductors ◽  
Phonon Dispersion ◽  
Naphthalene Crystal

Comparison of Certain Local Pseudopotentials and a New Proposal

2013 ◽  
Vol 665 ◽  
pp. 70-73
Author(s):  
Smruti J. Patel ◽  
A.Y. Vahora ◽  
B.Y. Thakore ◽  
Ashvin R. Jani
Keyword(s):  
Phonon Dispersion ◽  
Liquid Metals ◽  
Form Factors ◽  
Model Potential ◽  
Test Case ◽  
Nearest Neighbour ◽  
Core Radius ◽  
Phonon Dispersion Curves ◽  
Neighbour Distance

A new proposal of a local pseudopotential is put forwarded here depending on the concept of extended core radius in which half of the nearest neighbour distance is treated as effective core radius. There is no input of any property for fitting this parameter in this formalism. This pseudopotential is found to satisfy all the necessary requirements for applications. With this model potential we have evaluated the form factors for several bcc, fcc and hcp metals and achieved excellent agreement with previous results. On the same footing, we have examined other 14 local pseudo potentials also and on the basis of the comparison, the presently proposed pseudopotential is found to be much better. As a test case study, we have evaluated phonon dispersion curves of some liquid metals, viz. Na (Z = 1), Mg (Z = 2), Al (Z= 3) and Pb (Z = 4) and obtained quite satisfactory results.

The Impact of Interlayer Electronic Coupling on Charge Transport in Organic Semiconductors: A Case Study on Titanylphthalocyanine Single Crystals

2016 ◽  
Vol 55 (17) ◽  
pp. 5206-5209 ◽  
Author(s):  
Zongpeng Zhang ◽  
Lang Jiang ◽  
Changli Cheng ◽  
Yonggang Zhen ◽  
Guangyao Zhao ◽  
...  
Keyword(s):  
Charge Transport ◽  
Single Crystals ◽  
Organic Semiconductors ◽  
Electronic Coupling ◽  
The Impact

Phonon dispersion in d8-naphthalene crystal at 6K

1980 ◽  
Vol 13 (23) ◽  
pp. 4265-4283 ◽  
Author(s):  
I Natkaniec ◽  
E L Bokhenkov ◽  
B Dorner ◽  
J Kalus ◽  
G A Mackenzie ◽  
...  
Keyword(s):  
Phonon Dispersion ◽  
Naphthalene Crystal

A case study of tuning the crystal polymorphs of organic semiconductors towards simultaneously improved light emission and field-effect properties

2019 ◽  
Vol 7 (20) ◽  
pp. 5925-5930 ◽  
Author(s):  
Dan Liu ◽  
Chenguang Li ◽  
Shujie Niu ◽  
Yang Li ◽  
Mengxiao Hu ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Field Effect ◽  
Light Emission ◽  
Optoelectronic Devices ◽  
Anthracene Derivative ◽  
Β Phase ◽  
Potential Applications

Simultaneously improved light emission and field-effect performance were achieved for an anthracene derivative, 1,4-di(anthracen-9-yl)buta-1,3-diyne (DABD) in its β-phase crystals, suggesting their potential applications in integrated optoelectronic devices.

The Impact of Interlayer Electronic Coupling on Charge Transport in Organic Semiconductors: A Case Study on Titanylphthalocyanine Single Crystals

2016 ◽  
Vol 128 (17) ◽  
pp. 5292-5295 ◽  
Author(s):  
Zongpeng Zhang ◽  
Lang Jiang ◽  
Changli Cheng ◽  
Yonggang Zhen ◽  
Guangyao Zhao ◽  
...  
Keyword(s):  
Charge Transport ◽  
Single Crystals ◽  
Organic Semiconductors ◽  
Electronic Coupling ◽  
The Impact

The Genesis and Internal Dynamics of El Salvador's People's Revolutionary Army, 1970–1976

2014 ◽  
Vol 38 (01) ◽  
pp. 102-129
Author(s):  
ALBERTO MARTÍN ÁLVAREZ ◽  
EUDALD CORTINA ORERO
Keyword(s):  
Latin America ◽  
El Salvador ◽  
Early Years ◽  
Left Wing ◽  
Internal Dynamics ◽  
Internal Coherence ◽  
The 1960S

AbstractUsing interviews with former militants and previously unpublished documents, this article traces the genesis and internal dynamics of the Ejército Revolucionario del Pueblo (People's Revolutionary Army, ERP) in El Salvador during the early years of its existence (1970–6). This period was marked by the inability of the ERP to maintain internal coherence or any consensus on revolutionary strategy, which led to a series of splits and internal fights over control of the organisation. The evidence marshalled in this case study sheds new light on the origins of the armed Salvadorean Left and thus contributes to a wider understanding of the processes of formation and internal dynamics of armed left-wing groups that emerged from the 1960s onwards in Latin America.

Culture and the plasticity of perception

2020 ◽  
Vol 43 ◽  
Author(s):  
Michael Lifshitz ◽  
T. M. Luhrmann
Keyword(s):  
Cultural Context ◽  
Sensory Experience ◽  
Cultural Learning ◽  
The World

Abstract Culture shapes our basic sensory experience of the world. This is particularly striking in the study of religion and psychosis, where we and others have shown that cultural context determines both the structure and content of hallucination-like events. The cultural shaping of hallucinations may provide a rich case-study for linking cultural learning with emerging prediction-based models of perception.

Dual systems for all: Higher-order, role-based relational reasoning as a uniquely derived feature of human cognition

2019 ◽  
Vol 42 ◽  
Author(s):  
Daniel J. Povinelli ◽  
Gabrielle C. Glorioso ◽  
Shannon L. Kuznar ◽  
Mateja Pavlic
Keyword(s):  
Temporal Reasoning ◽  
Higher Order ◽  
Important Case ◽  
Human Cognition ◽  
Relational Reasoning ◽  
Dual Systems ◽  
First Order ◽  
Reasoning System ◽  
Role Based

Abstract Hoerl and McCormack demonstrate that although animals possess a sophisticated temporal updating system, there is no evidence that they also possess a temporal reasoning system. This important case study is directly related to the broader claim that although animals are manifestly capable of first-order (perceptually-based) relational reasoning, they lack the capacity for higher-order, role-based relational reasoning. We argue this distinction applies to all domains of cognition.

Sociocultural memory development research drives new directions in gadgetry science

2019 ◽  
Vol 42 ◽  
Author(s):  
Penny Van Bergen ◽  
John Sutton
Keyword(s):  
Episodic Memory ◽  
Autobiographical Memory ◽  
Developmental Psychology ◽  
Cross Cultural ◽  
Memory Development ◽  
Development Research ◽  
Cultural Research ◽  
New Directions ◽  
Cross Cultural Research

Abstract Sociocultural developmental psychology can drive new directions in gadgetry science. We use autobiographical memory, a compound capacity incorporating episodic memory, as a case study. Autobiographical memory emerges late in development, supported by interactions with parents. Intervention research highlights the causal influence of these interactions, whereas cross-cultural research demonstrates culturally determined diversity. Different patterns of inheritance are discussed.

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