NbSe₂ (Niobium diselenide)

2D materials anisotropic

2 datasets, together covering 0.3–1.69 µm. Default: Munkhbat et al. 2022: multilayer flakes; n,k(o) 0.30–1.69 µm.

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

Datasets

Multilayer flakes

Munkhbat et al. 2022: multilayer flakes; n,k(o) 0.30–1.69 µm n,k 0.3–1.69 µm default
Munkhbat et al. 2022: multilayer flakes; n,k(e) 0.30–1.69 µm n,k 0.3–1.69 µm

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# NbSe2 (Niobium diselenide): Munkhbat et al. 2022: multilayer flakes; n,k(o) 0.30–1.69 µm
nbse2 = ls.fetch_refractiveindex("main", "NbSe2", "Munkhbat-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(nbse2.range_nm)  # (300, 1690) nm
eps = nbse2.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_0730806aa631/lightsmith"
nbse2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(nbse2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (nbse2/munkhbat-2022-o).

# ... load nbse2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=nbse2)],
    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 NbSe2 (Niobium diselenide)

Niobium diselenide (NbSe₂) is a layered transition metal dichalcogenide with intriguing electronic and optical properties. Due to its layered structure, NbSe₂ can be exfoliated into ultra-thin sheets, similarly to graphene, which are of interest in nanoscale devices. One of the notable properties of NbSe₂ is its superconductivity at low temperatures. Additionally, research has shown that this material possesses charge-density wave phases, making it a subject of interest for understanding correlated electron systems. In the realm of optics, the material's nonlinear optical properties are being explored for potential applications in photonics and optoelectronics.

Other names: Niobium diselenide, Niobium(IV) selenide

Niobium diselenide - Wikipedia

API: /v1/materials/mat_09934511a96b · slug nbse2