WS2 (Tungsten disulfide)
2D materials anisotropic
11 datasets, together covering 0.3–1.7 µm. Default: Vyshnevyy et al. 2023: n,k(o) 0.36–1.70 µm.
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Tick datasets in the list to add them to the plot (up to 12).
Datasets
Bulk
2D structures
Multilayer flakes
Use it in Lightsmith
Load this data in Python, simulate in one more line
pip install lightsmith
import lightsmith as ls
# WS2 (Tungsten disulfide): Vyshnevyy et al. 2023: n,k(o) 0.36–1.70 µm
ws2 = ls.fetch_refractiveindex("main", "WS2", "Vyshnevyy-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ws2.range_nm) # (360, 1700) nm
eps = ws2.eps([633]) # complex permittivityDownloads 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_cc71b8602e7b/lightsmith"
ws2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(ws2.source) # citation and provenance travel with the dataAny dataset here, as the library's Tabulated material (ws2/vyshnevyy-2023-o).
# ... load ws2 as above, then:
sim = ls.Simulation(
particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=ws2)],
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 wavelengthSame spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).
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 WS2 (Tungsten disulfide)
Tungsten disulfide (WS2) is a layered transition metal dichalcogenide that possesses distinct properties based on its structural morphology. In its three-dimensional bulk form, WS2 has indirect bandgap semiconducting properties, which contrasts its behavior when isolated to a monolayer or few-layer forms. When exfoliated to these thin layers, WS2 undergoes a transition to a direct bandgap semiconductor, making it intriguing for potential applications in electronics, optoelectronics, and photonics. This material's unique hexagonal structure gives it excellent lubrication capabilities, often preferred in environments with high pressures and temperatures. Furthermore, research continues into its promise in nanoelectronic devices, spintronic applications, and as a component in heterostructures with other two-dimensional materials.
Other names: Tungsten disulfide
API: /v1/materials/mat_765a191915ec · slug ws2