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The inorganic mixture of the elements calcium and fluorine with the formula CaF2 is known as calcium fluoride. It is a solid that is insoluble and white.
It is found in the mineral fluorite, also known as fluorspar, which is frequently deeply coloured due to impurities. Eight-coordinate Ca2+ centres are situated in a cube of eight F centres. Each F centre coordinates with four Ca2+ centres to form a tetrahedron.
Although ideally packed crystalline samples are colourless, the mineral is frequently intensely coloured because of the presence of F-centres.
Numerous ionic compounds with the formula AB2 share the same crystal structure, including CeO2, cubic ZrO2, UO2, ThO2, and PuO2. Anions and cations, such as Be2C, are switched in the matching anti-structure, which is known as the antifluorite structure.
The Global Calcium Fluoride market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
An intermediary thin layer of shellac was used as part of a dip-coating technique to develop a thin film of CaF2 coating on Ti6Al4V material (natural resin). In order to assess the surface features of the produced coating, it was submitted to the X-ray powder diffraction method (XRD) and scanning electron microscopy (SEM).
Due to its great stability and spectacular luminous qualities, calcium fluoride (CaF2) nanopowders are widely used in biomedical applications like imaging. The cell-labelling approach is employed in tumour therapy to keep track of the transplanted stem cells over an extended length of time.
Organic dyes, which are commonly used to mark cells, only partially penetrate tissue. This disadvantage can be solved with CaF2 In multimodal imaging techniques like magnetic resonance imaging (MRI) and photoluminescence (PL) microscopy, CaF2-based nanoparticles are also used as contrast agents.
Theranostic drugs represent a significant additional use of CaF2. These are resources that can be applied in conjunction with one another to aid in both diagnosis and therapy.
In the field of nanomedicine, CaF2 is also displaying encouraging outcomes. The CaF2 nanoparticles can dissociate a functional protein (like GCAP1) at the proper cell sites to locally cure the associated disease.
They are also capable of carrying a functional protein (like GCAP1) on their surface. According to a study, a new kind of bioactive glass was created whose composition was changed by the addition of CaF2.
When this newly created bioactive glass was submerged in a static model of body fluid, a biocompatible hydroxyapatite layer completely formed on the glass surface in just three weeks.
Edmund Optics windows are made of IR Grade Calcium Fluoride, which has a high damage threshold and minimal absorption in the infrared spectrum.
In comparison to other fluoride-based substrates, ISP Optics Calcium Fluoride (CaF2) Windows have a lower solubility and are harder, which makes them perfect for applications with demanding conditions like thermal imaging and infrared spectroscopy systems.
Since they cover the wavelength range from 200 nm to 7 m, TECHSPEC Calcium Fluoride (CaF2) Aspheric Lenses have good transmission from the ultraviolet (UV) through the infrared (IR). These diamond-turned aspheric lenses can be integrated without much Fresnel reflection loss due to the low index of refraction of calcium fluoride.
These aspheric lenses can be employed in severe conditions due to calcium fluoride’s low solubility and greater durability compared to other fluoride-based substrates.
TECHSPEC offers two different designs of calcium fluoride (CaF2) aspheric lenses: one for excimer laser and other UV applications with a design wavelength of 266 nm, and the other for spectroscopic, mid-wave infrared (MWIR) thermal imaging, and other IR applications with a design wavelength of 4 m.
Oxford Instruments mechanical and thermal characteristics prevent it from being utilized as a cold inner window. The transmission data is for a window that is 2 mm thick. 26mm in diameter and 1mm thick.A continuous flow cryostat with vacuum loading is called the OptistatCF-V. The cryostat’s heat exchanger is pumped with liquid cryogen from a separate dewar for helium or nitrogen storage.
A needle valve on the transfer controls the flow of the cryogen. Precise temperature control is obtained using an ITC temperature controller. The production of optical parts like windows and lenses by MSE Supplies LLC, which are frequently used in telescopes, excimer lasers, spectroscopy, thermal imaging systems, and other devices, is its main use.
From ultraviolet (UV) to infrared (IR) wavelengths, the CaF2 thin film coating exhibits excellent transparency. Because of its low refractive index, anti-reflection coatings are not as necessary.
Thorlabs’ calcium fluoride substrate used in these plate beamsplitters has numerous advantageous physical and chemical characteristics. Calcium fluoride has a 95 Abbe Number, which indicates little dispersion.
For long-term stability, a dielectric coating is utilized. These beamsplitters come in versions that are 1/2″, 1″, or 2″. For the 1 – 6 m range, a 25 x 36 mm version made specifically for attachment in microscopy filter cubes is also offered.
Additionally, it has outstanding thermal, chemical, and water resistance. CaF2 can be used up to 1000 °C in dry settings, but in the presence of moisture, degradation will occur for temperatures exceeding 600 °C. This crystal is also inert to organic chemicals and many acids.
