EVASKY S88

Polymers and photoresists

1 dataset, together covering 0.25–2.5 µm. Default: Vogt et al. 2016: n,k 0.25–2.5 µm.

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Datasets

Vogt et al. 2016: n,k 0.25–2.5 µm n,k 0.25–2.5 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# EVASKY S88: Vogt et al. 2016: n,k 0.25–2.5 µm
evasky_s88 = ls.fetch_refractiveindex("other", "EVASKY_S88", "Vogt", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(evasky_s88.range_nm)  # (250, 2500) nm
eps = evasky_s88.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_60052b19c354/lightsmith"
evasky_s88 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(evasky_s88.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (evasky-s88/vogt-2016).

# ... load evasky_s88 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=evasky_s88)],
    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 EVASKY S88

Ethylene-vinyl acetate (C₂H₄)_n(C₄H₆O₂)_m (EVA) is a copolymer composed of ethylene and vinyl acetate. This versatile material is known for its excellent flexibility, resilience, clarity, and resistance to UV radiation. It's softer and more flexible than polyethylene and possesses a lower melting point. EVA's unique properties stem from its varied content of vinyl acetate (typically ranging from 5% to 50%), with higher content increasing its softness and flexibility. This copolymer is widely used in various applications including foam shoe soles, hot melt adhesives, films for packaging, and even toys. Its versatility extends to other specialized uses like solar panel encapsulation and as a component in biomedical devices due to its biocompatibility. EVA is also known for its ease of processing, making it a preferred material for various fabrication methods.

Other names: EVASKY_S88, Ethylene-vinyl acetate, (C₂H₄)_n(C₄H₆O₂)_m, EVA, Poly(ethylene-vinyl acetate), PEVA, Poly(ethylene-co-vinyl acetate), Polyethylene-vinyl acetate copolymer, EVASKY

API: /v1/materials/mat_d9a1f401c7be · slug evasky-s88