C₂H₄ (Ethylene)

Gases

1 dataset, together covering 0.523–0.6677 µm. Default: Loria 1909: Gas at 0 °C; n 0.523–0.668 µm.

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Datasets

Loria 1909: Gas at 0 °C; n 0.523–0.668 µm n 0.523–0.6677 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# C2H4 (Ethylene): Loria 1909: Gas at 0 °C; n 0.523–0.668 µm
c2h4 = ls.fetch_refractiveindex("organic", "ethylene", "Loria", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c2h4.range_nm)  # (523, 667.7) nm
eps = c2h4.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_c849d5d7f9f7/lightsmith"
c2h4 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(c2h4.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (ethylene/loria-1909).

# ... load c2h4 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=c2h4)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=523, stop_nm=667, 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 C2H4 (Ethylene)

Ethylene (C₂H₄) is a colorless, flammable gas with a slightly sweet odor. It is the simplest alkene and is produced in vast quantities in the petrochemical industry. Ethylene plays a critical role in the synthetic polymer industry, being the precursor to polyethylene, the world's most widely used plastic. Besides its significance in polymer synthesis, ethylene is a naturally occurring plant hormone responsible for fruit ripening and flower wilting. Due to its importance in both industrial and natural processes, ethylene production and its role in plant biology have been extensively studied. In the industrial setting, it's crucial to store and transport ethylene under controlled conditions due to its flammability.

Other names: C2H4, C₂H₄

API: /v1/materials/mat_0ea763d32e07 · slug ethylene