Cu-Zn (Copper-zinc alloy, Brass)
3 datasets, together covering 0.21–55.56 µm. Default: Querry 1985: n,k 0.21–55.6 µm; 90% Cu 10% Zn.
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Use it in Lightsmith
Load this data in Python, simulate in one more line
pip install lightsmith
import lightsmith as ls
# Cu-Zn (Copper-zinc alloy, Brass): Querry 1985: n,k 0.21–55.6 µm; 90% Cu 10% Zn
cu_zn = ls.fetch_refractiveindex("other", "Cu-Zn", "Querry-Cu90Zn10", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cu_zn.range_nm) # (210, 55555.6) nm
eps = cu_zn.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_95bed2cab5c2/lightsmith"
cu_zn = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(cu_zn.source) # citation and provenance travel with the dataAny dataset here, as the library's Tabulated material (cu-zn/querry-1985-cu90zn10).
# ... load cu_zn as above, then:
sim = ls.Simulation(
particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=cu_zn)],
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 Cu-Zn (Copper-zinc alloy, Brass)
Brass is an alloy primarily composed of copper and zinc, prized for its versatility and attractive gold-like appearance. Its mechanical properties, such as strength and ductility, can be adjusted by varying the copper-to-zinc ratio, making it suitable for a wide range of applications—from musical instruments and decorative pieces to plumbing and marine hardware. Brass is relatively resistant to corrosion and easy to machine, further contributing to its popularity in manufacturing and engineering fields. In decorative contexts, the natural patina that can develop on brass adds to its aesthetic appeal and cultural significance.
Other names: Copper-zinc alloy, Brass, Copper-zinc alloy, Brass
Also listed in
API: /v1/materials/mat_69ee5ed8e7ed · slug cu-zn