Results 101 to 110 of about 150,628 (306)

Toward Reliable Metal Halide Perovskite FETs: From Electronic Structure and Device Physics to Stability and Performance Engineering

open access: yesAdvanced Electronic Materials, EarlyView.
Metal halide perovskite field‐effect transistors (PeFETs) offer great promise for flexible, low‐cost, and high‐performance due to their excellent charge carrier properties. However, challenges like ion migration, hysteresis, and instability limit their performance.
Georgios Chatzigiannakis   +13 more
wiley   +1 more source

Trade booms, trade busts and trade costs [PDF]

open access: yes, 2010
What has driven trade booms and trade busts in the past and present? We derive a micro-founded measure of trade frictions from leading trade theories and use it to gauge the importance of bilateral trade costs in determining international trade flows ...
Jacks, David S. (David Steven)   +2 more
core  

Decoding Short‐Range Order in Amorphous Two‐Dimensional Nanosheets for Efficient and Durable Ampere‐Level Seawater Electrolysis: A Case Study of Amorphous Ni(OH)2

open access: yesAdvanced Energy Materials, EarlyView.
This work uncovers the atomic‐scale origins of exceptional HER performance in amorphous Ni(OH)2 nanosheets by combining atom probe tomography, DFT simulations, and operando spectroscopy. We identify distinct short‐range‐order motifs that accelerate water dissociation, proton transport, and hydrogen adsorption. Embedding Pt single atoms further enhances
Xin Geng   +4 more
wiley   +1 more source

Empires and Colonialism: An Essay in Historiographic Reconstruction1

open access: yesTidsskrift for Samfunnsforskning
The nation-state is the primary political unit of analysis across the social sciences. It is understood to organize the formal international division of the world as well as social relations domestically.
Gurminder K. Bhambra
doaj   +1 more source

Dendrite Formation and Self‐Healing Mechanism in Ionic Liquid‐Based Magnesium Batteries

open access: yesAdvanced Energy Materials, EarlyView.
This graphical illustration highlights the importance of operating Mg batteries within a safe operating current density (SOCD) range. Beyond this range, Mg batteries are susceptible to dendrite formation. However, when cycling a dendritic cell with a highly thermally stable electrolyte, a self‐heating effect occurs.
Omar W. Elkhafif   +5 more
wiley   +1 more source

Geopolitical analysis of the collapse of empires [PDF]

open access: yesتحقیقات کاربردی علوم جغرافیایی
When empires and great nations decline, there are many interrelated reasons involved in. Empires are considered to be powerful entities in the world, and via historical surveys, one can identify several important empires that have existed in different ...
syrous Ahmadi Nohdani   +2 more
doaj  

CONSIDERATIONS FROM HISTORY

open access: yesمجلة الآداب
This paper explores the application of historical theories by Sir John Glubb and Ibn Khaldun to analyze modern empires, specifically the United States and China.
Abdelqadir Houti   +2 more
doaj   +1 more source

Multimodal Strategy for Efficient Semi‐Transparent Perovskite Solar Cells and Modules with Record Indoor Performance

open access: yesAdvanced Energy Materials, EarlyView.
A multimodal strategy creates efficient semi‐transparent perovskite solar cells with a record 4.29% light utilization efficiency and 22.41% indoor performance. This approach enables the first scalable 30 x 30 cm2 semi‐transparent solar module, highlighting its potential for building‐integrated and indoor photovoltaics.
Siming Huang   +16 more
wiley   +1 more source

Selective Charge Extraction Allows Fast Photomultiplication and Imaging in Rigid and Ultra‐Flexible SWIR Organic Photodiodes

open access: yesAdvanced Energy Materials, EarlyView.
SWIR donor polymer TQ‐3T allows photomultiplication in OPD in 1:1 ratio with NFA Y6, achieving EQEs > 1100% at ‐10 V. Microseconds response times are retained, amongst the lowest for photomultiplication. As proof of concept, we demonstrate ultrathin and flexible PM‐OPDs based on our TQ‐3T:Y6 as a flexible pulse oximeter as well as a conformable image ...
Matilde Brunetta   +23 more
wiley   +1 more source

Ernest Gellner: an intellectual biography [PDF]

open access: yes, 2012
Catherine Hezser finds that John A. Hall’s biography of one of the most prominent social anthropologists of our time provides fascinating reading on issues and debates which are still of utmost importance. Ernest Gellner: An Intellectual Biography.
Hezser, Catherine
core  

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