Nb (Niobium)

5 datasets, together covering 0.00236–10 µm. Default: Windt et al. 1988: n,k 0.0024–0.122 µm.

Compare datasets

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

Datasets

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# Nb (Niobium): Windt et al. 1988: n,k 0.0024–0.122 µm
nb = ls.fetch_refractiveindex("main", "Nb", "Windt", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(nb.range_nm)  # (2.36, 121.57) nm
eps = nb.eps([16.9])  # 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_97cf41358434/lightsmith"
nb = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(nb.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (nb/windt-1988).

# ... load nb as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=nb)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=3, stop_nm=121, 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 Nb (Niobium)

Niobium (Nb) is a soft, grey, ductile transition metal, often recognized for its high melting point and unique superconducting properties. In the realm of optics, niobium's most noteworthy application lies in its thin film form, which can be utilized as a coating for specialized optical components. These coatings benefit from niobium's ability to provide excellent reflectivity in the infrared spectrum. Furthermore, due to its superconducting capabilities, niobium finds applications in advanced scientific equipment like particle accelerators and quantum computing setups, where it is used to fabricate superconducting radio-frequency (RF) cavities.

Other names: Niobium

API: /v1/materials/mat_f794c935ccc4 · slug nb