Results 111 to 120 of about 1,760,575 (295)

Defect structure for the ultra-nanocrystalline diamond films synthesized in H2-containing Ar/CH4 plasma

open access: yes, 2011
The modification on the microstructure of diamond films due to the addition of H2 species into the Ar/CH4 plasma was investigated. While the Ar/CH4 plasma produced UNCD films with equiaxed grains (about 5 nm in size), the (Ar-H2)/CH4 plasma produced ...
Chen, Huang-Chin; Wang, Chuan-Sheng; Lin, I-Nan; Cheng, Hsiu-Fung   +1 more
core   +1 more source

From Fiber Bundles to Architected Membranes: Triply Periodic Minimal Surface Architectures for Biohybrid Artificial Lungs

open access: yesAdvanced Materials, EarlyView.
Additively manufactured triply periodic minimal surface (TPMS) membranes offer an architecture‐driven alternative to hollow fiber bundles in artificial lungs. Multiphysics simulations and endothelialized prototypes show that the 3D‐printable membrane architecture improves gas exchange, blood flow distribution, and hemocompatibility, enabling ...
Michael Pflaum   +14 more
wiley   +1 more source

Thermal entanglement of the spin-1/2 diamond chain

open access: yesJournal of Physics: Conference Series, 2012
The entanglement thermal (equilibrium) properties in spin-1/2 Ising-Heisenberg model on an ideal diamond chain is analyzed. Due to the classical character of Ising-type exchange interactions between two neighboring antiferromagnetic Heisenberg dimers, the calculation of quantum entanglement (by tracing out Ising spins) can be performed for each of the ...
Chakhmakhchyan, L.   +3 more
openaire   +2 more sources

Magnetometry with nitrogen-vacancy defects in diamond [PDF]

open access: yes, 2014
The isolated electronic spin system of the nitrogen-vacancy (NV) centre in diamond offers unique possibilities to be employed as a nanoscale sensor for detection and imaging of weak magnetic fields.
Hingant, T.   +11 more
core   +1 more source

Polymeric Sorbents as Energy‐Efficient Alternative to Cryogenic Distillation for Light Hydrocarbon Purification

open access: yesAdvanced Materials, EarlyView.
The transition from cryogenic distillation to polymeric sorbents for light hydrocarbon purification is crucial for energy and environmental sustainability. The polymeric sorbents are engineered to separate gas mixtures based on their specific properties.
Kelechi Festus   +9 more
wiley   +1 more source

Direct Growth of 2D Bilayers on Au(111) for Low‐Coercive Sliding Ferroelectricity

open access: yesAdvanced Materials, EarlyView.
Controlled CVD growth of stacking‐defined bilayer ReS2 on Au(111) enables parallel‐stacked bilayers with intrinsic sliding ferroelectricity, a strong piezoelectric response, and an ultralow coercive voltage. Atomic‐resolution imaging and in situ measurements further reveal the decisive role of clean interfaces in achieving low‐barrier ferroelectric ...
Honglin Chen   +7 more
wiley   +1 more source

Magnetic Properties of Mixed Spin Ising Diamond Chain [PDF]

open access: yesEarth Sciences, 2015
In this paper, we establish a mixed spin Ising diamond chain model on the basis of the effective-field theory with correlations. The formula of the magnetization and the magnetic susceptibility has been given. Effects of the various parameters such as exchange couplings and the anisotropy on the magnetization and the magnetic susceptibility of Ising ...
openaire   +1 more source

Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells

open access: yesAdvanced Materials, EarlyView.
Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park   +14 more
wiley   +1 more source

Beyond Nanoporosity: A CO2‐Conditioned Glassy Matrix Contributes to the Brittle‐to‐Ductile Transition of Nanocellular Polyetherimide

open access: yesAdvanced Materials, EarlyView.
The mechanical performance of nanocellular polyetherimide cannot be explained by nanoporosity alone. It is shown that CO2 saturation and desorption leave a distinct mechanical signature in the glassy matrix before foaming. This matrix contribution provides a new route to understand and optimize the brittle to ductile transition in nanocellular polymers.
Félix Lizalde‐Arroyo   +7 more
wiley   +1 more source

Strengthening Healthcare Supply Chains: A Comprehensive Strategy for Resilience in the Face of Natural Disasters [PDF]

open access: yesHealth Economics and Management Review
Effective and uninterrupted management of the healthcare supply chain and healthcare system preparedness for natural disasters (e.g., pandemics, earthquakes, forest fires, etc.) is essential to ensure that victims receive critical healthcare services and
Mimi Lima
doaj   +1 more source

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