(C₈H₈)_n-(C₃H₃N)_m (Styrene-acrylonitrile, SAN)

Polymers and photoresists

1 dataset, together covering 0.4368–1.052 µm. Default: Sultanova et al. 2009: n 0.4368–1.052 µm.

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Tick datasets in the list to add them to the plot (up to 12).

Datasets

Sultanova et al. 2009: n 0.4368–1.052 µm n 0.4368–1.052 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# (C8H8)n-(C3H3N)m (Styrene-acrylonitrile, SAN): Sultanova et al. 2009: n 0.4368–1.052 µm
c8h8_n_c3h3n_m = ls.fetch_refractiveindex("other", "C8H8_n-C3H3N_m", "Sultanova", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c8h8_n_c3h3n_m.range_nm)  # (436.8, 1052) nm
eps = c8h8_n_c3h3n_m.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_bf0138885d0b/lightsmith"
c8h8_n_c3h3n_m = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(c8h8_n_c3h3n_m.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (c8h8-n-c3h3n-m/sultanova-2009).

# ... load c8h8_n_c3h3n_m as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=c8h8_n_c3h3n_m)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=437, 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_bf0138885d0b/lightsmith?model=drude_lorentz"
c8h8_n_c3h3n_m_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 (C8H8)n-(C3H3N)m (Styrene-acrylonitrile, SAN)

Other names: C8H8_n-C3H3N_m, C8H8)n-(C3H3N)m (Styrene-acrylonitrile, SAN, Styrene-acrylonitrile, SAN, C₈H₈)_n-(C₃H₃N)_m, Styrene-acrylonitrile resin, Styrene-acrylonitrile copolymer

API: /v1/materials/mat_9ca6eed8a410 · slug c8h8-n-c3h3n-m