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Results for “ENCAPSULATION”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Silico-manganese fumes waste encapsulated cryogenic alginate beads for aqueous environment de-colorization
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Shape anisotropy and hybridization enhanced magnetization in nanowires of Fe/MgO/Fe encapsulated in carbon nanotubes
Arrays of tunneling magnetoresistance (TMR) nanowires were synthesized for the first time by filling Fe/MgO/Fe inside vertically grown and substrate supported carbon nanotubes. The magnetic properties of nanowires and planar nanoscale thin films of Fe/MgO/Fe showed several similarities, such as two-fold magnetic symmetry and ratio of orbital moment to spin moment. Nanowires of Fe/MgO/Fe showed higher saturation magnetization by a factor of 2.7 compared to planar thin films of Fe/MgO/Fe at 1.5 kOe. The enhanced magnetic properties likely resulted from shape anisotropy of the nanowires and as well as the hybridization that occur between the π- electronic states of carbon and 3d-bands of the Fe-surface.
Optimizing cell encapsulation condition in ECM-Collagen I hydrogels to support 3D neuronal cultures
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Structural, optical, hyperfine and magnetization studies of ZnO encapsulated α-Fe nanoparticles
We report the successful preparation and characterization of magnetic-fluorescent nanoparticles (NPs) by overcoming the difficulty of handling α-Fe nanoparticles that are less stable and have high affinity to get oxidized in air even at room temperature. Nanocrystalline α-Fe particles embedded by ZnO have been synthesized by a two step chemical route. Concentration of α-Fe has been varied as 15, 30 and 50 wt% of the sample. Detailed investigations on structural, hyperfine, optical and magnetic characteristics have been carried out. X-ray diffraction, transmission electron microscopy and fourier transform infrared spectroscopy studies have been used to confirm the coexistence of Fe and ZnO phases in the nanocomposites (NCs). The presence of α-Fe is also confirmed by Mössbauer spectroscopy. However, other forms of iron are also detected in the sample. UV–vis spectrum of nanocomposites shows a red shift with respect to the pristine ZnO which is attributed to the electron transfer between Fe and ZnO that provides support to the formation of the Fe- ZnO NC. The photoluminescence (PL) spectra of Fe-ZnO nanocomposites exhibit blue shift of the UV and weaker visible emission lines compared to the pristine ZnO. Nanocomposites are found to be magnetically soft having high saturation magnetization with very low remanence. Low temperature coercivity enhancement due to freezing of uncompensated surface spins is also found in all samples.
Sb nanoparticles encapsulated in 3D porous carbon as anode material for lithium-ion and potassium-ion batteries
Highlights: • The Sb nanoparticle completely embedded in 3D porous carbon (Sb@PC) was synthesized. • This novel 3D structure contribute to relieve the intense volume expansion while ensure the integrity of the structure. • As Li-ion and K-ion batteries anode materials, which both showed excellent electrochemical performance. - Abstract: In the current research project, we have synthesized a novel Sb/Carbon nanocomposite with 3D porous structure which is successfully applied to the Li/K-ion batteries as anode materials. The unique structure shows the homogeneous Sb nanoparticles embedded into a 3D porous carbon (Sb@PC), relieving the intense volume expansion of inner Sb alloying and contributing to the integrity of the structure. As anode materials of Li-ion and K-ion batteries, they both showed an excellent electrochemical performance.
Ni-encapsulated TiO2 nanotube array prepared using atomic layer deposition as a high-performance Li-ion battery anode
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An Encapsulation-Rearrangement Strategy to Integrate Superhydrophobicity into Mesoporous Metal-Organic Frameworks
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Low temperature hermetic laser-assisted glass frit encapsulation of soda-lime glass substrates
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Optimization of an encapsulated phase change material thermal energy storage system
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Materials selection investigation for thin film photovoltaic module encapsulation
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