Near-infrared (NIR) phosphor-converted light-emitting diodes (pc-LEDs) are newly emergent broadband light sources for miniaturizing optical systems like spectrometers.
ادامه مطلبClinobisvanite (monoclinic scheelite BiVO4, S.G.I2/b) has garnered interest as a wide-band semiconductor with photocatalyst activity, as a high NIR reflectance material for camouflage and cool pigments and as a photoanode for PEC application from seawater. BiVO4 exists in four polymorphs: orthorhombic, zircon-tetragonal, monoclinic, and …
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ادامه مطلبIR is divided into different bands: Near-Infrared (NIR, 0.78~3.0 μm), Mid-Infrared (MIR, 3.0~50.0 μm) and Far-Infrared (FIR, 50.0~1000.0 ... For example in recent years, optical fiber delivery systems have become an ... et al. Effects of far infrared rays emitting clothing on recovery after an intense plyometric exercise bout applied to elite ...
ادامه مطلبThe NIR phosphor-converted light-emitting diode (NIR pc-LED) is a new near-infrared light source that has been widely studied. Among various NIR phosphors, Cr 3+ doped gadolinium aluminum gallium garnet (GAGG:Cr 3+) ceramic phosphor has shown great potential due to its ultra-high efficiency and thermal stability.Despite its capabilities, …
ادامه مطلبMost near-infrared (NIR) phosphors suffer from short emission wavelength (<1000 nm) and narrow full width at half maximum (FWHM) values below 200 nm, restricting their broader applications in non-destructive tests, spectral analysis and photovoltaic fields. This study presents the successful synthesis of the
ادامه مطلبThe emission spectra of a MgO:0.2%Cr 3+-ceramic-converted NIR light source driven by 450 nm ... indicating that achieving high-power NIR output requires strict optical and thermal properties of ...
ادامه مطلبThis dataset contains compositional (elemental abundance) and descriptive data for a total of 8 ceramic and clay specimens from Oman, analyzed by the Lawrence Berkeley …
ادامه مطلبPersistent luminescence ceramic phosphors (PLCPs) are widely used because of their special optical properties. CaSnO 3, with perovskite structure, is matrix material of PLCPs with excellent performance.In this work, we demonstrated that Bi 3+ transforms into Bi 2+ and exhibits near-infrared (NIR)-persistent luminescence when Bi …
ادامه مطلبThe NIR glass-ceramics-converted light-emitting diode constructed by the glass-ceramics combined with 465 blue LED chip produced an excellent NIR output …
ادامه مطلبNIR light can penetrate tissues such as the brain, heart and spinal cord 78, 79, accelerate healing from ischemic heart injury 78, inhibit degeneration in injured optic nerve and retina 3, 78, and promote recovery in stroke 79-81. These effects by NIR light are clearly associated with the absorption spectrum of cytochrome oxidase 15.
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ادامه مطلب{"payload":{"allShortcutsEnabled":false,"fileTree":{"archives":{"items":[{"name":"1.html","path":"archives/1.html","contentType":"file"},{"name":"10.html","path ...
ادامه مطلب1. Background. Near infrared (NIR) region is a part of electromagnetic radiation with spectral range from 780 to 2500 nm [1].NIR energy with specific wavelengths can be partially absorbed by specific molecular bonds that consist of hydrogen e.g. C-H and O-H to become mechanical energy of molecular overtone and vibrations [2].The amount …
ادامه مطلبVisibly better detection: optical and spatial resolution of 3 to 8 mm. State of the art camera-based NIR technology. NIR (near infrared technology) refers to a spectrum in a range …
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ادامه مطلبIn this study, four-element high entropy carbonate solid solutions with Mg as the primary element and three equimolar transition metal elements (Co, Ni, Zn, Fe, Mn and Cu) were successfully prepared using the hydrothermal method. The crystal structure, microstructure, color properties, and reflectance of the synthetic materials were …
ادامه مطلبFig. 1 shows the typical excitation and emission spectra of MgGeO 3:Pr (prepared at 1400 °C with 0.1 at% Pr content).As shown in Fig. 1 (a), as to 622 nm emission, MgGeO 3:Pr has two excitation bands, one is a narrow excitation peak at 251 nm, and the other is a wide excitation band from 425 to 500 nm.There are three distinct …
ادامه مطلب1 Introduction. Broadband light sources are essential to a variety of optical and photonic systems such as near-infrared (NIR) spectrometers, [] optical coherence …
ادامه مطلبSi). We believe that our approach can be applied to a variety of promising novel optical materials being developed. Keyword: refractive index, optical ceramic, FTIR (Fourier Transform Infrared Spectroscopy) 1. Introduction In the design and fabrication of an optical system, the refractive indexes of the
ادامه مطلبEfficient recovery of recyclable materials from various waste streams like commercial & industrial or even domestic collections. ... optical and spatial resolution of 3 to 8 mm State of the art camera-based NIR technology. NIR (near infrared technology) refers to a spectrum in a range between 760 and 2500 nm that is invisible to humans. ...
ادامه مطلبThis project pertains to the compositional analysis of ceramic materials from Oman. These data were generated by neutron activation analysis (NAA) at the Lawrence Berkeley …
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ادامه مطلب1. Which is the most effective wavelength in red light therapy? Various wavelengths are effective for different purposes. However, 610nm 630nm 660nm 810nm 830nm & 850 nm have been proven to be most effective for a wide array of treatments. Of these, 660nm and 850nm are the most widely used. Choose a certified device that …
ادامه مطلبThe NIR optical properties of nanowire structures have also been investigated more generally for optoelectronic and detection applications and for use in absorption-based imaging and medical technologies. ... Super broadband near-infrared emission and energy transfer in Nd–Bi–Er Co-doped transparent silicate glass …
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ادامه مطلبAn Er(3+)-doped SiO2:Ta2O5 optical channel waveguide and nanocomposite were prepared by the sol-gel route at a Si:Ta 50:50 molar ratio. Channels with an excellent surface profile were easily and quickly fabricated by focusing a femtosecond laser onto the surface of multilayered films deposited on Si …
ادامه مطلبWhat is the difference between Red, Near-Infrared (NIR), and Far-Infrared (FIR) light therapies? Is one better than the other? Are there cases where a particular wavelength or micron range is more …
ادامه مطلبThe XRD patterns of the as-prepared pigments exposed to 1400 °C are shown in Fig. 1 and S1.All the diffraction peaks are sharp and well-indexed with the standard pattern of the perovskite phase YAlO 3 oxides (JCPDS #70–1677). Furthermore, no impurity peak was observed when Cr or Mg was introduced into the YAlO 3 …
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