Results 211 to 220 of about 5,995,934 (373)

Van Der Waals Hybrid Integration of 2D Semimetals for Broadband Photodetection

open access: yesAdvanced Materials, EarlyView.
Advanced broadband photodetector technologies are essential for military and civilian applications. 2D semimetals, with their gapless band structures, high mobility, and topological protection, offer great promise for broadband PDs. This study reviews the latest advancements in broadband PDs utilizing heterostructures that combine 2D semimetals with ...
Xue Li   +9 more
wiley   +1 more source

Evolving migrant crisis in Europe: implications for health systems

open access: yesThe Lancet Global Health, 2017
Manuel Carballo   +3 more
doaj   +1 more source

Conducting research among smuggled migrants in the Netherlands and Austria: methodological reflections

open access: yesMigraciones, 2014
Qualitative research among smuggled migrants raises methodological as well as ethical questions. In this article the implications of field work among this specific group of people are thoroughly discussed. Also migrants who have been smuggled have a past,
Veronika Bilger, Ilse Van Liempt
doaj  

Analysis of the temporary evolution of the Romanian migration flows abroad, on migration routes [PDF]

open access: yes
This article analyses the international migration of the Romanians based on their direction, within the extent of 1990-2008. The tendencies are being examined depending on the region of origin and of destination of the migrants and also depending on the ...
Emilia Ungureanu   +2 more
core   +1 more source

Recent Advances in Wide‐Bandgap Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Ubiquitous defects predominately account for photo‐instability and open‐circuit voltage losses in wide‐bandgap perovskite solar cells (WBG PSCs). This review comprehensively presents the underlying impact mechanisms, summarizes the advanced optimization strategies across various functional layers and their interfaces to develop efficient and stable WBG
Jianjun Mei, Feng Yan
wiley   +1 more source

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