C₅H₅N (Pyridine)

Liquids

1 dataset, together covering 0.4–2 µm. Default: Chang et al. 2024: n 0.4–2.0 µm.

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

Datasets

Chang et al. 2024: n 0.4–2.0 µm n 0.4–2 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# C5H5N (Pyridine): Chang et al. 2024: n 0.4–2.0 µm
c5h5n = ls.fetch_refractiveindex("organic", "pyridine", "Chang", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c5h5n.range_nm)  # (400, 2000) nm
eps = c5h5n.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_b3c3b38edc0e/lightsmith"
c5h5n = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(c5h5n.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (pyridine/chang-2024).

# ... load c5h5n as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=c5h5n)],
    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_b3c3b38edc0e/lightsmith?model=drude_lorentz"
c5h5n_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 C5H5N (Pyridine)

Pyridine (C₅H₅N) is an organic compound featuring a heterocyclic ring structure containing one nitrogen atom. It appears as a colorless to pale yellow liquid with a distinctive, pungent odor often compared to fish. Pyridine is widely utilized as a solvent and reagent in organic synthesis, particularly in the manufacture of pesticides, pharmaceuticals, and vitamins. Additionally, its electrical conductivity and coordination properties make it valuable in electrochemistry and as a precursor in the synthesis of many agrochemicals and dyes. In terms of optics, pyridine's specific refractive index properties may be exploited in various applications. Due to its toxicity and unpleasant odor, careful handling and adequate ventilation are essential when working with pyridine.

Other names: C5H5N, C₅H₅N, Azabenzene, Azine, Azinine

API: /v1/materials/mat_7dbca8772584 · slug pyridine