What is chalcogenide glass used for?

Chalcogenide glasses are convenient materials for solid membranes of various types of solid-state chemical sensors (conventional ion-selective electrodes (ISE), ion-selective field-effect transistors (ISFET), miniature silicon-based sensors), which can be developed both as selective discrete sensors and low-selective …

What is chalcogenide material?

Chalcogenide materials are chemical compounds consisting of at least one chalcogen ion, i.e. a chemical element in column VI of the periodic table also known as the oxygen family. More precisely the term chalcogenide refers to the sulphides, selenides, and tellurides.

What is halide glass fibers?

Halide glasses are made of inorganic halide (e.g., fluoride (F−), chloride (Cl−), bromide (Br−), and iodide (I−)) salts. From: Functional Glasses and Glass-Ceramics, 2017.

What are lead chalcogenides?

Abstract. Lead chalcogenide (PbS, PbSe) nanoparticles are prepared for two equimolar concentrations (0.25 and 0.5) by simple and low cost sol–gel method at room temperature. The obtained Pb(S,Se) nanoparticles were characterized by XRD, FTIR, SEM and Optical analysis.

What is chalcogen ion?

The chalcogens (ore forming) (/ˈkælkədʒənz/ KAL-kə-jənz) are the chemical elements in group 16 of the periodic table. This group is also known as the oxygen family. It consists of the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and the radioactive element polonium (Po).

Do halides form glass?

Halide glasses are made of inorganic halide (e.g., fluoride (F−), chloride (Cl−), bromide (Br−), and iodide (I−)) salts….13.4. 3.1 Properties.

Is fluoride a halide?

A halide ion is a halogen atom bearing a negative charge. The halide anions are fluoride (F−), chloride (Cl−), bromide (Br−), iodide (I−) an astatide (At−). Halide minerals contain halides.

Why are 16 groups called chalcogens?

-Group-16 elements are also called chalcogens. They are called so because most of the copper ores have copper in the form of oxides and sulphides. They also contain small amounts of selenium and tellurium. The ores of copper are called ‘chalcos’ in Greek.

Why is Group 15 called pnictogens?

Group 15 elements are also known as pnictogens because in Greek pigeon means to cholk or stifle. In the absence of the oxygen, molecular nitrogen has this property. That’s why group 15 elements are known as either nitrogen family or pnictogens.

Does potassium chloride react with iodine?

Displacement reactions as redox reactions – Higher In this reaction, potassium atoms lose electrons to form positively-charged potassium ions (oxidation) and iodine atoms gain electrons to form negatively-charged iodide ions (reduction).

What is active glass fiber?

Active fibers are optical fibers which have one or more laser-active dopants in the fiber core. Active fibers are generally made from some glass, in most cases from fused silica (→ silica fibers).

What can chalcogenide glass fibers be used for?

Chalcogenide glass fibers are the ideal candidates for mid-infrared applications that require high power laser delivery, chemical sensing, thermal imaging and temperature monitoring.

Which is softer silica glass or chalcogenide glass?

No. Chalcogenide glass fibers are softer glass fibers than silica glass (SiO 2) fibers used in telecommunications, which are essentially pure silicon dioxide, and possess 10 times the tensile strength. Therefore, special attention and different methods should be applied in handing chalcogenide glass fiber.

What makes chalcogenide glass insoluble in water?

Chalcogenide glasses are insoluble in water, concentrated hydrochloric acid, non-oxidizing acids, alcohol, acetone, gasoline, and toluene. They are soluble in strong alkaline solutions, such as KOH. Is chalcogenide glass Like fluoride fiber? Chalcogenide fiber transmits to longer wavelengths (up to 10µm) compared to Fluoride fiber (<5µm).

What is the optical loss of a chalcogenide glass?

Arsenic-containing chalcogenide glasses, such as arsenic sulfide (As 2 S 3) and arsenic selenide (As 2 Se 3 ), have excellent chemical and physical properties for active optical devices. The minimum optical loss in As 2 S 3 and As 2 Se 3 are 0.1dB/m between 2 and 10µm.