Near-infrared (NIR) light, valuable for its biological penetration and invisibility to the human eye, is a crucial tool in biomedicine, environmental monitoring, anticounterfeiting, and information encryption, yet traditional NIR luminescent materials are often unstable in humid conditions. Here, a highly stable MgGeO3:Mn2+ glass ceramic (GC) with NIR luminescence …
aforementioned fluorescence properties could open new routes for ionizing radiation-free ceramic material detection since imaging in the near-infrared range (NIR, 700-1700 nm) offers high tissue penetration by light in the so-called 'biological transparency window.'[37] This includes reduced light
GEMSTONES: DIAMOND SORTING The entire palette of diamond recovery, with effective sorting technology. Recover even the purest diamonds from a size of 3 mm with x-ray transmission: our NIR technology can analyse the complete material stream and reliably separates kimberlite from waste rock.
Enhanced broadband near-infrared (NIR) emission from 850 to 1150 nm (bandwidth: ∼252 nm) was obtained in the glass–ceramic fiber compared to that of precursor …
CNTs are often employed as PA contrast agents due to strong near infrared region (NIR) absorbance with remarkable optical absorbance which can also be engineered with other nanostructures for better contrasting ability. Despite the fact that SWCNTs are the most used carbon-based materials, MWCNTs have a huge potential for PA imaging.
2.1. System overview. The optical layout for our dual-modality catheter-based OCT-NIRS is schematically shown in Fig. 1.For OCT, we used optical frequency domain imaging (OFDI) technology, alternatively known as swept-source OCT (SS-OCT) or frequency-domain OCT [4, 6, 7].The optical source was a wavelength-swept laser that generated broadband …
Two birds with one stone: A multi-functional nanoplatform for sensitive detection and real-time inactivation of pathogenic bacteria with NIR-triggered PTT/PDT ... This method was further used to detect S. aureus in eggs and milk, with recovery rates ranging from 83 % to 100 % (Table S2). The ability of the probe to specifically detect G + was ...
The NIR region can be divided into the NIR I (650 nm–950 nm) and NIR II (1000–1350 nm) regions where the former is more commonly used due to the availability of optics and low noise filters and detectors. 18,19 While higher tissue penetration depth may be achieved by NIR II as the scattering is reduced (Fig. 1C), thereby improving the total ...
The entire palette of diamond recovery, with effective sorting technology. Recover even the purest diamonds from a size of 3 mm with x-ray transmission: our NIR technology can …
Near-infrared (NIR) refers to the section of the spectrum from 650 to 2500 nm. NIR luminescent materials are widely employed in organic light-emitting diodes (OLEDs), fiber optic communication ...
Based on the optical methods reviewed in this paper, we classify the amplitude range of the examined stone surfaces in three groups in terms of Ra and Pt (difference in level between …
The results indicate that the Tribo-Induced Near-Infrared Light Emission consists of three peaks, in which the 780 nm peak is related to the electronic transition between the 3d5/2 and 3d3/2 …
"Near-infrared (NIR) spectroscopy sorting technology is incorporated in an automated optical mineral sorter that can discriminate between materials using the differences in characteristics when exposed to near-infrared radiation. During September 2014 to April 2015, a pilot plant that utilized NIR technology to discriminate between kimberlite and waste materials …
Near Infra-Red/NIR Optical Sorting in the Plastics Recycling Process. NIR sorting is widely used to separate plastic by NIR Optical Sorting via transmission or reflection, sometimes in a dedicated Plastics Recovery Facility. Automatic sorters interface NIR sensing with air nozzles to sort plastic items of various resin compounds/plastic polymer ...
Near-infrared (NIR) spectroscopy realized by an NIR phosphor-converted light-emitting diode (pc-LED) as a light source has aroused considerable interest due to its numerous merits and widespread application …
Enhanced broadband near-infrared (NIR) emission from 850 to 1150 nm (bandwidth: ∼252 nm) was obtained in the glass–ceramic fiber compared to that of precursor fiber. These results suggest that the Nd 3+ /Yb 3+ glass–ceramic fibers are promising for broadband NIR optical amplifications and lasers.
An 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 …
So generally we should prefer Far-Infrared when needing direct tissue heating or detox with full-body devices.The usage of non-thermal Red and Near-Infrared LEDs and Lasers is used for deeper direct photon penetration …
The severe urban heat island effect emphasizes the heightened importance of reducing building energy consumption. Cool pigments with higher near-infrared reflectivity contribute to the overall coating performance of the building. In this work, a novel intense blue pigment with superior infrared reflectance based on Ni-doped Zn2SiO4 was successfully …
Although optical sorting systems are commonly used in various fields of application, detailed scientific studies are fairly scarce. Most research is focused on the technical or economical ...
Single crystal of TlCl was doped with NIR photoluminescent univalent bismuth cations by prolonged immersion in liquid bismuth metal. The ion exchange Tl + + Bi 0 ↔ Tl 0 + Bi + at the crystal surface with subsequent Bi + migration to the bulk are expected to drive the doping process. Contrary with Bi-doped TlCl crystals, grown by Bridgman method, the ion …
To overcome this thorny problem, Cr 3+-doped multi-phase glass-ceramics have emerged as highly promising NIR luminescent materials.In multi-phase glass-ceramics, luminescent ions can be selectively enriched in different crystal phases, effectively suppressing fluorescence quenching between ions and enabling the realization of broadband and highly …
TOMRA is the worldwide leader in optical sorting. The superior Near Infrared (NIR) recognition on their optical scanners produces a higher yield and more accurate results than optical sorting systems that use ordinary NIR sensors. ... A 95% recovery rate at the beginning of the shift drops significantly in just 30 minutes of dust/dirt build up ...
Designing Er 3+ /Ho 3+-Doped Near-Infrared (NIR-II) Fluorescent Ceramic Particles for Avoiding Optical Absorption by Water. Masakazu Umezawa, Hiroyuki Kurahashi, Karina Nigoghossian, Kyohei Okubo, ... Rare-earth-doped ceramics, which are near-infrared (NIR) fluorescent materials, have applications as photonic materials in various fields ...
Herein, an ultrahigh-sensitive and tumor-specific photoacoustography technique in the near-infrared (NIR-II) region based on optical writing and redox-responsive chromogenic graphic fixing is developed by introducing a self-synthesized photosensitive silver bromide modified with poly lactic-co-glycolic acid (AgBr@PLGA) nanocrystals. After they ...
Matching the equipment to the ore type minimizes energy consumption, improves recovery rates, and ensures a longer operational lifespan of the machinery. ... This …
This is due to the characteristic near-infrared (NIR) emission of Er 3+ at 1.54 µm (4 I 13/2 → 4 I 15/2) which has had a huge impact on data transmission via optical communication. Extensive studies have therefore recently been conducted on Er 3+ and its performance in several glass matrices [27], [28], [29] .
Advanced Optical Materials. Volume 11, Issue 21 2300772. Research Article. Efficient and Stable Gd 3 Ga 5 O 12:Cr 3+ Phosphors for High ... Cr 3+-activated Gd 3 Ga 5 O 12 garnet (GGG:Cr 3+) near-infrared (NIR) phosphors have shown promising applications in regulating plant growth. However, the low external quantum efficiency (EQE) results in a ...
A and B, Graphs show spectra for radiology (A) and optical/near-infrared ... is achieved when structural information from radiographic imaging improves the accuracy of the optical parameter recovery or the optical spectroscopy can be focused onto the region identified in the radiographic imaging. This synergy in spatial localization is commonly ...
Corresponding Author. Guoping Dong [email protected] The State Key Laboratory of Luminescent Materials and Devices, Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, School of Materials Science and …
It is mainly "ceramic- or mineral-like" solids, such as concrete, mortar, cement paste, tiles, roof-tiles, bricks and natural stones, plus minor amounts of plastics, metals, woods, glasses among others [4, 12, 13]. Commonly, asphalts and dredging soils are collected and stored separately from the other CDW materials.
We conclude that ER can indicate the mechanical condition and state of health of articular cartilage. The correlation of ER with cartilage optical response in the NIR range could facilitate real-time evaluation of the tissue's …
Such exploration can be classified into two categories according to the functionality: carrier-conduction 20 or light-confinement 21 or both. 22 Integrated with colloidal quantum dots, silicon can provide high thermal and electrical conductivity, silicon nitride, silica or silicon can serve as low-loss waveguide for near-infrared light. Optical ...
a) Output emission of NIR lamps (obtained from[35], more information in supporting content). b) NIR absorption of 1: Substrate; 2: 30 sol layers; 3: 30 sol layers, 1h of thermal treatment at 750 ...
Identification, Recovery and Improvement of Ancient Mediterranean Ceramic Manufacturing … FT- NIR ( Optical Fibers, 4000-12000 cm-1) raw and low-fired clays » Free online chat!
After the chemical characterization of these samples, we further investigated the thermal and NIR optical response shape memory properties of them by artificial tensile cycling process. In Fig. 1 c, the film samples were stretched to approximately 50 % strain at 60 °C, then cooled to room temperature to fix the temporary shape. Subsequently ...
The Cr-doped YAlO 3 has been developed as the red ceramic pigments [[23], [24], [25]].The red hue of the Cr-doped YAlO 3 pigments was often considered to be associated with the existence of the Cr 3+ ion [23, 26].J. Huang et al. [27] also found that the Cr 3+ ion in the YAlO 3 lattice can reduce its band gap.However, for Cr-doped pigments, the high-valent …
Conversion of near infrared (NIR) excitation into visible light in luminescent materials co-doped with Tm 3+ and Yb 3+ may be applied in optical thermometers as well [17, 18]. Temperature measurement is realized by determination of fluorescence intensity ratio (FIR) between luminescent excited states which are thermally coupled levels.
