12 Result(s)
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Characterization and Evaluation of Materials
Fengmin **
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Article
Stable single-mode 20-channel uniform buried grating DFB QCL array emitting at ~ 8.3 μm
A 20-channeldistributed feedback (DFB) quantum cascade laser (QCL) arrays based on uniform buried grating have been demonstrated. In pulsed mode, peak power reaches 80 mW and slope efficiency reaches 167 mW/A ...
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Understanding the kinetics of Fe subsurface dissolution and surface segregation upon annealing Fe on Pd(111) in vacuum/oxygen environment
The kinetics of Fe subsurface dissolution and surface segregation upon annealing Fe/Pd(111) in vacuum/oxygen environment are simulated by the modified Darken model incorporation of oxygen absorption. The simul...
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Article
Double-perovskite Ca3TeO6:Sm3+, Na+ orange–red-emitting phosphors for UV-based white light-emitting diodes
A series of double-perovskite orange–red-emitting Ca(3−2x)SmxNaxTeO6 (x = 0.01–0.25) phosphors have been synthesized via high-temperature method. The single-phase and orthorhombic structure of Ca3TeO6:Sm3+, Na+ ...
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Article
Novel red-emitting BaGeTeO6:Sm3+ phosphors with high color purity for NUV excited with white LEDs
Sm3+ ions activated BaGeTeO6 phosphors were firstly produced through a method of solid-state synthesis at high temperatures. X-ray diffraction pointed out the pure phase of BaGeTeO6 phosphors. Photoluminescence s...
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Novel orange-red emitting Sm3+-doped Bi4Sr3Te5O19 phosphors with high color purity for white light-emitting diodes
Novel Sm3+-doped tellurate Bi4Sr3Te5O19 phosphors have been prepared through the solid-state reaction for the first time. The powder phase purity, particle morphology, and luminescence properties are analyzed in ...
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Article
Electrowetting on a multi-walled carbon nanotube membrane with different droplet sizes in an electric field
An electric field was applied across a deionized water droplet placed on a multi-walled carbon nanotube (MWCNT) membrane. Droplets of different size were tested by varying the voltage applied from 3 to 25 V du...
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Article
In situ photo-immobilised pH gradient isoelectric focusing and zone electrophoresis integrated two-dimensional microfluidic chip electrophoresis for protein separation
A method is introduced for open-column photo-induced site-selective immobilization of pH gradients in a layer of PEG-methacrylate in a multi-dimensional microfluidic chip for use in electrophoresis. It has sev...
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Article
Noninvasive detection of colorectal cancer by analysis of exhaled breath
There has been growing interest in exhaled breath analysis for cancer screening and disease monitoring; however, limited breath biomarker information exists regarding colorectal cancer (CRC). The objective of ...
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Article
Computational studies on the energetic properties of polynitroxanthines
Density function theory calculations were performed to find comprehensive relationships between the structures and properties of a series of highly energetic polynitroxanthines. The isodesmic reaction method w...
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Article
Enhanced electrochemical detection performance of multiwall carbon nanotubes functionalized by aspartame
Inexpensive, non-toxic, and biocompatible materials that can disperse multiwall carbon nanotubes (MWCNTs) in aqueous solutions through a non-covalent approach while retaining their unique electronic and photon...
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Article
Optical interband transitions in [111] poled relaxor-based ferroelectric 0.24Pb(In1/2Nb1/2)O3–(0.76 − x)Pb(Mg1/3Nb2/3)O3–xPbTiO3 single crystal
Optical transmission spectra of single crystal 0.24Pb(In1/2Nb1/2)O3–(0.76 − x)Pb(Mg1/3Nb2/3)O3–xPbTiO3 (x = 0.27, 0.33) were measured in the pseudo-cubic crystallographic directions [111] and [11 ...
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Article
Investigation on properties of P((MAA-co-DMAEMA)-g-EG) polyampholyte nanogels
P((MAA-co-DMAEMA)-g-EG) polyampholyte nanogels (PANGs) were prepared by distillation-dispersion copolymerization of poly(ethylene glycol) methyl ether methacrylate (MPEGMA), N,N-dimethylaminoethyl methacrylate (D...
