C₇H₁₆ (Heptane)

3 datasets, together covering 0.326–0.644 µm. Default: Kerl and Varchmin 1995: n-Heptane; 293 K; n 0.326–0.644 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

# C7H16 (Heptane): Kerl and Varchmin 1995: n-Heptane; 293 K; n 0.326–0.644 µm
c7h16 = ls.fetch_refractiveindex("organic", "heptane", "Kerl-293K", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c7h16.range_nm)  # (326, 644) nm
eps = c7h16.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_4e01682d9aca/lightsmith"
c7h16 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(c7h16.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (heptane/kerl-varchmin-1995-293k).

# ... load c7h16 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=c7h16)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=400, stop_nm=644, 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 C7H16 (Heptane)

Heptane (C₇H₁₆) is a straight-chain alkane hydrocarbon. It is a clear, colorless liquid that is less dense than water and exhibits a characteristic odor reminiscent of petrol. Being flammable, it is used in many laboratory settings as a non-polar solvent for organic substances. Heptane is also employed as a fuel in various applications and forms a significant component of gasoline. Due to its non-polarity, it is unsuitable for dissolving polar compounds but works effectively with non-polar molecules. In the field of optics, heptane can be used in a variety of experiments and setups that require a liquid medium with specific refractive properties.

Other names: C7H16, C₇H₁₆

API: /v1/materials/mat_346db4ef4dff · slug heptane