CaSO₄ (Calcium sulfate)

Glasses, oxides and dielectrics anisotropic

3 datasets, together covering 2.5–55.56 µm. Default: Querry 1987: n,k(α) 2.50–55.6 µm.

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Datasets

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# CaSO4 (Calcium sulfate): Querry 1987: n,k(α) 2.50–55.6 µm
caso4 = ls.fetch_refractiveindex("main", "CaSO4", "Querry-α", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(caso4.range_nm)  # (2500, 55555.6) nm
eps = caso4.eps([11800])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_7c8fcf2eb41e/lightsmith"
caso4 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(caso4.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (caso4/querry-1987).

# ... load caso4 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=caso4)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=2500, stop_nm=55560, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength

Same spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).

Materials guide Open a sphere of it in Studio Quick start Ask the community

Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.

About CaSO4 (Calcium sulfate)

Calcium sulfate (CaSO₄) is an inorganic compound that exists in various forms including anhydrite (anhydrous) and gypsum (dihydrate). It possesses an orthorhombic crystal structure in its anhydrous form and a monoclinic structure as gypsum. While it has limited direct applications in the field of optics, it serves as a crucial material in industrial processes. It is often used as a filler in the production of paper and textiles and acts as a coagulant in water treatment. Calcium sulfate is also employed in the construction industry as a component of drywall and plasters. Its low solubility in water makes it ideal for soil treatment, where it helps to break down heavy clay soils. In the medical field, gypsum is used for making orthopedic casts. Calcium sulfate is commonly synthesized through the neutralization of sulfuric acid with calcium carbonate or as a byproduct in various industrial processes. Its diverse applications make it an economically significant material across multiple sectors. Mineral: Anhydrite

Other names: Calcium sulfate, Plaster of Paris, Drierite, Gypsum, Anhydrite

API: /v1/materials/mat_85e75e95e7d7 · slug caso4