(C₆H₁₁NO)_n (Poly(N-isopropylacrylamide), PNIPAM)

Polymers and photoresists

1 dataset, together covering 0.2456–1.688 µm. Default: Brasse et al. 2018: n,k 0.246–1.69 µm.

Compare datasets

Tick datasets in the list to add them to the plot (up to 12).

Datasets

Brasse et al. 2018: n,k 0.246–1.69 µm n,k 0.2456–1.688 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# (C6H11NO)n (Poly(N-isopropylacrylamide), PNIPAM): Brasse et al. 2018: n,k 0.246–1.69 µm
mat = ls.fetch_refractiveindex("organic", "poly_N-isopropylacrylamide", "Brasse", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(mat.range_nm)  # (245.581, 1688.43) 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_bb228f545fcc/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 (poly-n-isopropylacrylamide/brasse-2018).

# ... 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 (C6H11NO)n (Poly(N-isopropylacrylamide), PNIPAM)

Pentanol (Amyl alcohol, C₅H₁₂O) is an organic compound that belongs to the alcohol family. There are several isomers of pentanol, with the common name "amyl alcohol" often referring to a mixture of these isomers. Predominantly, it's used as a solvent and an intermediate in the production of other chemicals. In its pure form, pentanol has a characteristic alcoholic odor and is slightly viscous compared to lower alcohols. When considering its optical properties, pentanol is generally transparent in the visible spectrum. Like other alcohols, pentanol should be handled with care due to its flammable nature and potential health effects. Proper storage and precautions are necessary when working with or around this compound.

Other names: poly_N-isopropylacrylamide, C6H11NO)n (Poly(N-isopropylacrylamide), PNIPAM, Poly(N-isopropylacrylamide), (C₆H₁₁NO)_n, PNIPAM, PNIPA, PNIPAAm, NIPA, PNIPAA, PNIPAm

Poly(N-isopropylacrylamide) - Wikipedia

API: /v1/materials/mat_f1246e849e24 · slug poly-n-isopropylacrylamide