(C₂H₄O)_n (Polyvinyl alcohol, PVA)

2 datasets, together covering 0.3–1.5 µm. Default: Schnepf et al. 2017: n 0.3–1.5 µm.

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Datasets

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# (C2H4O)n (Polyvinyl alcohol, PVA): Schnepf et al. 2017: n 0.3–1.5 µm
mat = ls.fetch_refractiveindex("organic", "polyvinyl_alcohol", "Schnepf", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(mat.range_nm)  # (300, 1500) nm
eps = mat.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_fd5f4a5a8c1d/lightsmith"
mat = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(mat.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (polyvinyl-alcohol/schnepf-2017).

# ... load mat as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=mat)],
    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 (C2H4O)n (Polyvinyl alcohol, PVA)

Polyvinyl alcohol (PVA, (C₂H₄O)_n) is a water-soluble synthetic polymer that exhibits excellent film forming, emulsifying, and adhesive properties. Due to its hydrophilic nature and high biocompatibility, it is frequently employed in a variety of biomedical applications, including drug delivery systems and wound care products. In the realm of optics, PVA is commonly used as a base material for hydrogel contact lenses due to its comfort and permeability to oxygen. It is also utilized in the creation of polarizing films for LCDs. PVA's unique structural characteristics, which include a mix of both crystalline and amorphous regions, can influence its optical properties. This polymer is also known for its barrier properties against gases, making it useful in packaging. One of the interesting attributes of PVA is its ability to form hydrogels when treated appropriately, expanding its range of potential applications. While it possesses many advantageous qualities, it is important to note that PVA is sensitive to moisture, which can alter its physical properties.

Other names: polyvinyl_alcohol, C2H4O)n (Polyvinyl alcohol, PVA, Polyvinyl alcohol, (C₂H₄O)_n, PVA, Poly(vinyl alcohol), PVOH, PVAl, Kuraray Poval, Mowiol, Celvol, Polyviol, Elvanol

Polyvinyl alcohol - Wikipedia

API: /v1/materials/mat_92317c65b62a · slug polyvinyl-alcohol