V (Vanadium)

Metals and conductors

4 datasets, together covering 0.01759–2.48 µm. Default: Johnson and Christy 1974: n,k 0.188–1.937 µm.

Compare datasets

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Datasets

Experimental data

Models and simulations

Werner et al. 2009: DFT calculations; n,k 0.0176–2.48 µm n,k 0.01759–2.48 µm

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# V (Vanadium): Johnson and Christy 1974: n,k 0.188–1.937 µm
v = ls.fetch_refractiveindex("main", "V", "Johnson", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(v.range_nm)  # (188, 1937) nm
eps = v.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_e6ab83a6b005/lightsmith"
v = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(v.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (v/johnson-christy-1974).

# ... load v as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=v)],
    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"]).

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 V (Vanadium)

Vanadium (V) is a transition metal with a silvery-gray appearance. It is found in various minerals, notably vanadinite and carnotite, and is used primarily in the production of steel alloys such as high-speed tool steels. Its compounds are known for their vibrant colors and are used as catalysts, dye and print mordants, and in the manufacture of certain kinds of glass. Vanadium steel is known for its high strength and resistance to wear, making it useful in automotive parts, tools, and springs. Vanadium redox flow batteries, which take advantage of the multiple oxidation states of vanadium, are also being developed as a method for large-scale energy storage. The metal's natural occurrence in living organisms is still a topic of study, though it has been recognized in certain marine organisms and fungi.

Other names: Vanadium

API: /v1/materials/mat_c7ebb2a0140d · slug v