TaSe₂ (Tantalum 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

# TaSe2 (Tantalum diselenide): Munkhbat et al. 2022: multilayer flakes; n,k(o) 0.30–1.69 µm
tase2 = ls.fetch_refractiveindex("main", "TaSe2", "Munkhbat-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(tase2.range_nm)  # (300, 1690) nm
eps = tase2.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_a442d00d837a/lightsmith"
tase2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(tase2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (tase2/munkhbat-2022-o).

# ... load tase2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=tase2)],
    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 TaSe2 (Tantalum diselenide)

Tantalum diselenide (TaSe₂) is a member of the transition metal dichalcogenides (TMDs) family, possessing unique electrical and optical characteristics. Like its sulfide counterpart, TaSe₂ undergoes charge density wave (CDW) transitions, leading to complex electronic behaviors such as superconductivity in certain conditions. The material's layered structure allows for exfoliation into thin sheets, paving the way for potential applications in nanoelectronics and optoelectronics. Furthermore, TaSe₂'s intriguing properties, including its responses to external stimuli like pressure and field, make it a popular candidate for studying exotic quantum states and phase transitions.

Other names: Tantalum diselenide, Tantalum(IV) selenide, Tantalum(IV) diselenide, Tantalum selenide

Tantalum diselenide - Wikipedia

API: /v1/materials/mat_fe719d26289b · slug tase2