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SiO₂ (Silicon dioxide, Silica, Quartz)

Glasses, oxides and dielectrics integrated-photonicsanisotropic

16 datasets, together covering 0.0248–125.1 µm. Default: Malitson 1965: n 0.21–6.7 µm.

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# SiO2 (Silicon dioxide, Silica, Quartz): Malitson 1965: n 0.21–6.7 µm
sio2 = ls.LibraryMaterial(name="SiO2", dataset="Malitson")
print(sio2.range_nm)  # (210, 6700) nm
eps = sio2.eps([633])  # complex permittivity

Ships with the library: works offline and is the library's own default dataset choice.

import lightsmith as ls

# SiO2 (Silicon dioxide, Silica, Quartz): Malitson 1965: n 0.21–6.7 µm
sio2 = ls.fetch_refractiveindex("main", "SiO2", "Malitson", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(sio2.range_nm)  # (210, 6700) nm
eps = sio2.eps([633])  # 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_b28cb9317453/lightsmith"
sio2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(sio2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (sio2/malitson-1965).

# ... load sio2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=sio2)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=400, stop_nm=1000, 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"]).

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_b28cb9317453/lightsmith?model=drude_lorentz"
sio2_dl = ls.DrudeLorentz.model_validate(json.load(urllib.request.urlopen(url)))

A dispersive Drude–Lorentz model for time-domain solvers.

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 SiO2 (Silicon dioxide, Silica, Quartz)

Silicon dioxide (SiO₂), commonly known as silica, is found naturally in several crystalline forms, the most notable being quartz. Additionally, when silicon dioxide is manufactured without the crystalline structure, it forms what is known as fused silica. Fused silica is a non-crystalline (or amorphous) form of silicon dioxide and is produced by melting high purity silica at extremely high temperatures. It has superior optical clarity, especially in the ultraviolet (UV) range, and is resistant to thermal shock, making it valuable for many high-end optical applications, including lenses and windows in spacecraft and satellites. SiO₂ is extensively used in electronics as an insulator and serves as a primary ingredient in the production of glass. It's also used in thin-film optics, often as antireflection coatings on optical devices. Beyond its optical applications, silicon dioxide finds use in ceramics, construction, and even as a food additive. Polymorphs:

Alpha quartz (α-quartz, most common)
Beta quartz (β-quartz, only stable at temperatures above 573 °C)
Tridymite
Cristobalite
Coesite
Stishovite
Lechatelierite
Chalcedony

Other names: Silicon dioxide, Silica, Quartz, Silicon dioxide, Quartz, Silica, Silicon oxide, Silicon(IV) dioxide, silica, fused silica, glass, silicon dioxide, Fused silica (fused quartz)

Also listed in

API: /v1/materials/mat_0e426f833ac9 · slug sio2