Results 71 to 80 of about 91,034 (249)

Ligand Engineering for Precise Control of Ultrathin CsPbI3 Nanoplatelet Superlattices for Efficient Light‐Emitting Diodes

open access: yesAdvanced Materials, EarlyView.
In this work, we introduce ancillary‐ligand‐mediated growth control of ultrathin CsPbI3 PeNPLs to achieve highly uniform thickness and reduced agglomeration. Strong ancillary‐ligand coordination to the perovskite surface regulates nucleation and improves surface passivation, enabling color‐pure emission and preferentially oriented superlattices.
Jongbeom Kim   +23 more
wiley   +1 more source

The Hermit Kingdom’s Quest for Nuclear Weapons

open access: yesPolitikon, 2004
North Korea’s disclosure in October 2002 of its nuclear program based on uranium enrichment and its withdrawal from the Non-Proliferation Treaty (NPT) in January 2003, have led to an acute international crisis.
Gabriela Zina Fulop
doaj   +1 more source

Far‐Infrared Hyperbolic Phonon–Polaritons in Zirconium Disulfide

open access: yesAdvanced Materials, EarlyView.
An unpatterned ZrS2${\rm ZrS}_2$ flake, coupled to far‐field infrared light by metal nanoribbons, reveals hyperbolic phonon polaritons with multiple higher‐order branches and effective refractive indices up to 223. This resonator‐assisted approach establishes ZrS2${\rm ZrS}_2$ as a compact van der Waals platform for deeply subwavelength far‐infrared ...
Subhodip Saha   +7 more
wiley   +1 more source

Establishing Atomic Coherence in Twisted Oxide Membranes Containing Volatile Elements

open access: yesAdvanced Materials, EarlyView.
Twisted oxide membranes containing volatile elements often suffer from amorphous interfacial dead layers that suppress coupling. An oxygen‐annealing strategy establishes atomically coherent and chemically bonded interfaces in twisted NaNbO3 membranes, enabling coherent oxide moiré architectures in volatile‐element‐containing systems.
Young‐Hoon Kim   +6 more
wiley   +1 more source

Sunshine: Bright Over Decades

open access: yesThe ASIANetwork Exchange: A Journal for Asian Studies in the Liberal Arts, 2018
This paper analyses three cases over the history of North and South Korea’s formal relations to argue that despite Seoul’s official changes to its diplomatic policy towards Pyongyang, the core principles of the sunshine policy as articulated by Kim Dae ...
Karin Kildahl Honarvar
doaj   +2 more sources

Dynamic Mechanical Loading Modulates Extracellular Vesicle Production and Cargo in Meniscus Fibrochondrocytes

open access: yesAdvanced Materials Interfaces, EarlyView.
Dynamic mechanical loading of outer meniscus fibrochondrocytes increases extracellular vesicle (EV) yield and alters EV composition. When applied to progenitor cells, these mechanically primed EVs modulate the expression of matrix‐related genes.
Catherine Cheung   +6 more
wiley   +1 more source

Doubt Versus Trust: Framing Effects of the News About the 2018 Trump‒Kim Jong Un Summit in Singapore on American College Students

open access: yesInternational Journal of Communication, 2020
This article examines the effects of trust versus doubt news frames during the 2018 denuclearization summit between the United States and North Korea in June 2018, an issue that is characterized by negative media coverage about North Korea and its leader
Chang Sup Park, Barbara K. Kaye
doaj  

The Threat of a Nuclear- Armed North Korea and the Possibility of Solutions

open access: yesJurnal Hubungan Internasional, 2015
This article tries to describe the threat of North Korea nuclear to regional and international security. North Korea Nuclear Proliferation is open the possibility of an arms race, even nuclear war in the region. Moreover, North Korea technology’s ability
Zain Maulana
doaj   +1 more source

Maskless Fabrication of PLA‐Based Neural Arrays for CNS Recording and Stimulation

open access: yesAdvanced Materials Interfaces, EarlyView.
Biodegradable neural interfaces enable bidirectional communication with the CNS. Through electrochemical characterization, ageing tests with impedance monitoring, and in vivo validation, we assess the performance of PLA‐based epicortical and spinal implants.
Anna De Salvo   +14 more
wiley   +1 more source

Environmental degradation in the Korean Peninsula: Evidence from the environmental degradation index

open access: yesEcological Indicators
Effectively evaluating environmental degradation in the Korean Peninsula is of great significance for promoting sustainable development in Northeast Asia.
Yuanhao Yao   +4 more
doaj   +1 more source

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