Results 81 to 90 of about 6,958,099 (301)

Three-dimensional assembly structure of anatase TiO2 hollow microspheres with enhanced photocatalytic performance

open access: yesResults in Physics, 2017
The pure anatase TiO2 hollow microspheres are synthesized by a one-step template-free hydrothermal route. By defining temperature and time limits, we produce TiO2 hollow microspheres with a fluoride-mediated self-transformation. The surface morphology of
Yihao Tang   +4 more
doaj   +1 more source

Embedded Direct Ink Writing of Thermoset and Elastomeric Polymers via Frontal Polymerization

open access: yesAdvanced Functional Materials, EarlyView.
Embedded frontal polymerization direct ink writing (FP‐DIW) combines frontal ring‐opening metathesis polymerization with embedded 3D printing to decouple deposition from curing. A yield‐stress support bath stabilizes low‐viscosity inks, while on‐demand thermal initiation enables controlled front propagation. This approach expands the accessible feature
Mohammad Tanver Hossain   +12 more
wiley   +1 more source

Hollow-Structured Layered Double Hydroxide: Structure Evolution Induced by Gradient Composition

open access: yes, 2020
The rational design of hollow-structured materials with high specific area, advanced mass transfer, and exposure of selected sites is of great significance in both fundamental scientific research and applicable industrialization fields.
Haohong Duan (1973020)   +13 more
core   +1 more source

Development of hollow-core photonic bandgap fibres free of surface modes

open access: yes, 2009
Conventional optical fibres can only guide light in a high refractive index core by total internal reflection. By using total internal reflections it is not possible to guide light in an air core.
Amezcua-Correa, Rodrigo
core   +1 more source

Dipole radiation model for surface roughness scattering in hollow-core fibers [PDF]

open access: yes, 2012
We propose a physical model based on dipole radiation to estimate surface roughness scattering loss in microstructured and hollow-core photonic bandgap fibers.
David J. Richardson   +5 more
core   +2 more sources

Morphology-Controlled Synthesis of Hematite Nanocrystals and Their Optical, Magnetic and Electrochemical Performance

open access: yesNanomaterials, 2018
A series of α-Fe2O3 nanocrystals (NCs) with fascinating morphologies, such as hollow nanoolives, nanotubes, nanospindles, and nanoplates, were prepared through a simple template-free hydrothermal synthesis process.
Bangquan Li   +6 more
doaj   +1 more source

Upcycling Keratin‐Based Textile Waste Into High‐Performance Hybrid Fibers Via Tuning the Interfacial Interactions

open access: yesAdvanced Functional Materials, EarlyView.
Keratin recovered from animal‐hair textile waste is fractionated and blended with cellulose to produce continuously spun hybrid fibers. Selecting the high‐molecular‐weight keratin fraction enables 30 wt.% keratin incorporation while maintaining high strength in dry and wet states.
Mian Zhai   +6 more
wiley   +1 more source

Hollow engineering of CoP with facilitated phase reconstruction for efficient electrocatalytic HMF oxidation

open access: yesNano Research
Co-based materials usually undergo in-situ surface reconstruction during oxidation reactions, forming high-valent Co3+/Co4+ species as the true active sites.
Qiongyi Xie   +4 more
doaj   +1 more source

Rapid Microwave Plasma Engineering of HfO2/C@C Core‐Shell Fibrous Membrane Toward Flexible High‐Performance Electromagnetic Wave Absorption

open access: yesAdvanced Functional Materials, EarlyView.
Rapid microwave plasma torch engineering tunes crystal phases, carbon graphitization and oxygen‐vacancy defects in HfO2/C@C core‐shell fibrous membranes. Synergistic multi‐loss effects optimize impedance matching to deliver −65.75 dB reflection loss and a 7.37 GHz effective bandwidth for flexible electromagnetic wave absorption.
Qichao Ding   +14 more
wiley   +1 more source

Hollow cathode life-time prediction from low work function surface coverage evolution [PDF]

open access: yes, 2008
In this paper a procedure to update the plasma parameters relatively to changes of the hollow cathode surface work function has been developed. This procedure has been validated with experimental results and then coupled with the deposition/desorption ...
Coletti, M., Gabriel, S.B.
core   +2 more sources

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