Optical constants

Refractive index of C₈H₁₁N (Dimethylaniline, DMA)

Li et al. 2022: n 0.321–1.7 µm

Data: formula 5
Range: 0.321–1.7 µm
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 1.54988
Extinction coefficient k: 0

Permittivity ε₁: 2.40213
Permittivity ε₂: 0

Absorption coefficient α: 0 cm⁻¹
Penetration depth δ = λ/(2πk): — nm

Abbe number V_d: 28.408
Chromatic dispersion dn/dλ: -0.0952432 µm⁻¹

Group index n_g: 1.60585
Group velocity dispersion: 190.715 fs²/mm

Dispersion parameter D: -1040.45 ps/(nm·km)
Photon energy: 2.11001 eV

ε = (n + ik)², α = 4πk/λ, n_g = n − λ dn/dλ, GVD = λ³/(2πc²) d²n/dλ², D = −(λ/c) d²n/dλ². Group-velocity dispersion is given for formula data only.

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# C8H11N (Dimethylaniline, DMA): Li et al. 2022: n 0.321–1.7 µm
c8h11n = ls.fetch_refractiveindex("organic", "dimethylaniline", "Li", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c8h11n.range_nm)  # (321, 1700) nm
eps = c8h11n.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_915ea517f250/lightsmith"
c8h11n = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(c8h11n.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (dimethylaniline/li-2022).

# ... load c8h11n as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=c8h11n)],
    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.

Dispersion formula

Cauchy (formula 5), λ in µm

n = 1.5184 + 0.01395 λ^{- 2.0} - 0.00171 λ^{- 4.0} + 0.0002232 λ^{- 6.0}

Valid from 0.321 to 1.7 µm.

Coefficients as stored

C_i	Value
C1	1.5184
C2	0.01395
C3	-2.0
C4	-0.00171
C5	-4.0
C6	0.0002232
C7	-6.0

Comments and conditions

Room temperature.

References

X. Li, C. Wang, L. Ma, L. Liu. Ellipsometry-transmission measurement of the complex refractive indices for a series of organic solvents in the 200–1700 nm spectral range. Infrared Phys. Technol. 125, 104313 (2022)

doi:10.1016/j.infrared.2022.104313 Ellipsometry-transmission measurement of the complex refractive indices for a series of organic solvents in the 200–1700 nm spectral range, Infrared Physics & Technology (2022)

Cite

Xiaoning Li, Chengchao Wang, Lanxin Ma and Linhua Liu. Ellipsometry-transmission measurement of the complex refractive indices for a series of organic solvents in the 200–1700 nm spectral range. Infrared Physics & Technology, 125, 104313 (2022), doi:10.1016/j.infrared.2022.104313; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

Computed on 400 wavelengths, the same grid as the API and the library

CSV comma separated TXT tab separated YAML n, k Full database record original YAML All quantities CSV JSON metadata

C8H11N (Dimethylaniline, DMA), Li et al. 2022: n 0.321–1.7 µm: n and k versus wavelength
λ (µm)	n
0.321	1.696743
0.322344	1.693235
0.323693	1.689818
0.325049	1.686488
0.326409	1.683243
0.327776	1.680081
0.329148	1.677001
0.330526	1.673998
0.33191	1.671073
0.333299	1.668221
0.334695	1.665442
0.336096	1.662734
0.337503	1.660094
0.338916	1.65752
0.340335	1.655012
0.34176	1.652566
0.343191	1.650182
0.344627	1.647858
0.34607	1.645591
0.347519	1.643381
0.348974	1.641226
0.350435	1.639125
0.351902	1.637075
0.353375	1.635076
0.354855	1.633126
0.35634	1.631225
0.357832	1.629369
0.35933	1.627559
0.360835	1.625793
0.362345	1.62407
0.363862	1.622389
0.365385	1.620748
0.366915	1.619146
0.368451	1.617583
0.369994	1.616057
0.371543	1.614568
0.373098	1.613114
0.37466	1.611694
0.376229	1.610307
0.377804	1.608954
0.379386	1.607631
0.380974	1.60634
0.382569	1.605078
0.384171	1.603845
0.385779	1.602641
0.387394	1.601465
0.389016	1.600315
0.390644	1.599191
0.39228	1.598092
0.393922	1.597018
0.395571	1.595968
0.397227	1.594942
0.39889	1.593938
0.40056	1.592956
0.402237	1.591996
0.403921	1.591056
0.405612	1.590137
0.40731	1.589238
0.409016	1.588358
0.410728	1.587497
0.412448	1.586653
0.414174	1.585828
0.415908	1.58502
0.417649	1.584228
0.419398	1.583453
0.421154	1.582694
0.422917	1.58195
0.424688	1.581221
0.426466	1.580507
0.428251	1.579807
0.430044	1.579121
0.431844	1.578448
0.433652	1.577789
0.435468	1.577142
0.437291	1.576508
0.439122	1.575886
0.44096	1.575275
0.442806	1.574676
0.44466	1.574088
0.446521	1.573511
0.448391	1.572945
0.450268	1.572389
0.452153	1.571843
0.454046	1.571306
0.455947	1.570779
0.457856	1.570262
0.459773	1.569753
0.461697	1.569253
0.46363	1.568762
0.465571	1.568279
0.46752	1.567804
0.469478	1.567337
0.471443	1.566878
0.473417	1.566426
0.475399	1.565981
0.477389	1.565544
0.479388	1.565113
0.481395	1.56469
0.48341	1.564272
0.485434	1.563862
0.487466	1.563457
0.489507	1.563059
0.491556	1.562666
0.493614	1.56228
0.495681	1.561899
0.497756	1.561523
0.49984	1.561153
0.501933	1.560788
0.504034	1.560428
0.506144	1.560073
0.508263	1.559724
0.510391	1.559378
0.512528	1.559038
0.514673	1.558702
0.516828	1.55837
0.518992	1.558043
0.521165	1.55772
0.523347	1.557401
0.525538	1.557086
0.527738	1.556775
0.529947	1.556468
0.532166	1.556164
0.534394	1.555864
0.536631	1.555568
0.538878	1.555275
0.541134	1.554986
0.543399	1.5547
0.545674	1.554417
0.547959	1.554138
0.550253	1.553862
0.552556	1.553588
0.55487	1.553318
0.557193	1.553051
0.559525	1.552786
0.561868	1.552524
0.56422	1.552265
0.566582	1.552009
0.568954	1.551756
0.571336	1.551505
0.573728	1.551256
0.57613	1.55101
0.578542	1.550766
0.580964	1.550525
0.583396	1.550286
0.585839	1.55005
0.588291	1.549816
0.590754	1.549584
0.593227	1.549354
0.595711	1.549126
0.598205	1.5489
0.600709	1.548676
0.603224	1.548455
0.60575	1.548235
0.608286	1.548017
0.610832	1.547802
0.61339	1.547588
0.615958	1.547376
0.618536	1.547165
0.621126	1.546957
0.623726	1.54675
0.626337	1.546545
0.62896	1.546342
0.631593	1.546141
0.634237	1.545941
0.636892	1.545742
0.639559	1.545546
0.642236	1.54535
0.644925	1.545157
0.647625	1.544965
0.650336	1.544774
0.653059	1.544585
0.655793	1.544398
0.658538	1.544211
0.661295	1.544027
0.664064	1.543843
0.666844	1.543661
0.669636	1.543481
0.672439	1.543302
0.675254	1.543124
0.678081	1.542947
0.68092	1.542772
0.683771	1.542598
0.686634	1.542425
0.689508	1.542254
0.692395	1.542084
0.695294	1.541915
0.698204	1.541747
0.701128	1.541581
0.704063	1.541415
0.70701	1.541251
0.70997	1.541088
0.712943	1.540926
0.715927	1.540765
0.718925	1.540606
0.721935	1.540447
0.724957	1.54029
0.727992	1.540133
0.73104	1.539978
0.7341	1.539824
0.737174	1.539671
0.74026	1.539519
0.743359	1.539368
0.746471	1.539218
0.749596	1.539069
0.752734	1.538921
0.755886	1.538774
0.75905	1.538628
0.762228	1.538483
0.765419	1.538339
0.768624	1.538196
0.771842	1.538054
0.775073	1.537913
0.778318	1.537772
0.781576	1.537633
0.784848	1.537495
0.788134	1.537358
0.791434	1.537221
0.794747	1.537085
0.798074	1.536951
0.801415	1.536817
0.804771	1.536684
0.80814	1.536552
0.811523	1.536421
0.814921	1.536291
0.818332	1.536161
0.821758	1.536033
0.825199	1.535905
0.828653	1.535778
0.832122	1.535652
0.835606	1.535527
0.839104	1.535403
0.842617	1.535279
0.846145	1.535157
0.849688	1.535035
0.853245	1.534914
0.856817	1.534793
0.860404	1.534674
0.864006	1.534555
0.867623	1.534437
0.871256	1.53432
0.874903	1.534204
0.878566	1.534088
0.882244	1.533973
0.885938	1.533859
0.889647	1.533746
0.893371	1.533633
0.897111	1.533521
0.900867	1.53341
0.904639	1.5333
0.908426	1.53319
0.912229	1.533082
0.916048	1.532973
0.919883	1.532866
0.923734	1.532759
0.927602	1.532653
0.931485	1.532548
0.935385	1.532443
0.939301	1.532339
0.943233	1.532236
0.947182	1.532134
0.951148	1.532032
0.95513	1.531931
0.959128	1.53183
0.963144	1.531731
0.967176	1.531631
0.971225	1.531533
0.975291	1.531435
0.979374	1.531338
0.983474	1.531242
0.987592	1.531146
0.991726	1.531051
0.995878	1.530956
1.00005	1.530862
1.00423	1.530769
1.00844	1.530676
1.01266	1.530584
1.0169	1.530493
1.02116	1.530402
1.02543	1.530312
1.02973	1.530223
1.03404	1.530134
1.03837	1.530045
1.04271	1.529958
1.04708	1.529871
1.05146	1.529784
1.05586	1.529698
1.06028	1.529613
1.06472	1.529528
1.06918	1.529444
1.07366	1.52936
1.07815	1.529277
1.08267	1.529195
1.0872	1.529113
1.09175	1.529032
1.09632	1.528951
1.10091	1.528871
1.10552	1.528792
1.11015	1.528713
1.11479	1.528634
1.11946	1.528556
1.12415	1.528479
1.12885	1.528402
1.13358	1.528326
1.13833	1.52825
1.14309	1.528175
1.14788	1.5281
1.15268	1.528026
1.15751	1.527952
1.16236	1.527879
1.16722	1.527806
1.17211	1.527734
1.17702	1.527663
1.18194	1.527591
1.18689	1.527521
1.19186	1.527451
1.19685	1.527381
1.20186	1.527312
1.20689	1.527243
1.21194	1.527175
1.21702	1.527108
1.22211	1.527041
1.22723	1.526974
1.23237	1.526908
1.23753	1.526842
1.24271	1.526777
1.24791	1.526712
1.25314	1.526648
1.25838	1.526584
1.26365	1.52652
1.26894	1.526457
1.27425	1.526395
1.27959	1.526333
1.28494	1.526271
1.29032	1.52621
1.29573	1.526149
1.30115	1.526089
1.3066	1.526029
1.31207	1.52597
1.31756	1.525911
1.32308	1.525853
1.32862	1.525794
1.33418	1.525737
1.33976	1.52568
1.34537	1.525623
1.35101	1.525566
1.35666	1.52551
1.36234	1.525455
1.36804	1.5254
1.37377	1.525345
1.37952	1.52529
1.3853	1.525236
1.3911	1.525183
1.39692	1.52513
1.40277	1.525077
1.40864	1.525025
1.41454	1.524973
1.42046	1.524921
1.42641	1.52487
1.43238	1.524819
1.43838	1.524768
1.4444	1.524718
1.45045	1.524668
1.45652	1.524619
1.46262	1.52457
1.46874	1.524521
1.47489	1.524473
1.48106	1.524425
1.48726	1.524378
1.49349	1.524331
1.49974	1.524284
1.50602	1.524237
1.51233	1.524191
1.51866	1.524145
1.52502	1.5241
1.5314	1.524055
1.53781	1.52401
1.54425	1.523966
1.55072	1.523921
1.55721	1.523878
1.56373	1.523834
1.57027	1.523791
1.57685	1.523748
1.58345	1.523706
1.59008	1.523664
1.59674	1.523622
1.60342	1.52358
1.61013	1.523539
1.61687	1.523498
1.62364	1.523458
1.63044	1.523418
1.63727	1.523378
1.64412	1.523338
1.651	1.523299
1.65792	1.52326
1.66486	1.523221
1.67183	1.523182
1.67883	1.523144
1.68585	1.523106
1.69291	1.523069
1.7	1.523031

Optical transmission calculator

Free-standing sample in vacuum, normal incidence

Transmittance T: —
Reflectance R: —

Fresnel reflection calculator

R_p: —
R_s: —
R = (R_p+R_s)/2: —
Phase φ_p: —
Phase φ_s: —
Brewster angle θ_B: —
Critical angle θ_C: —

C₈H₁₁N (Dimethylaniline, DMA): all datasets

Li et al. 2022: n 0.321–1.7 µm n 0.321–1.7 µm default

About C8H11N (Dimethylaniline, DMA)

N,N-Dimethylaniline (C₈H₁₁N, DMA) is an aromatic amine consisting of a benzene ring substituted with a dimethylamino group. It is a colorless to pale yellow oily liquid with a characteristic amine-like odor, which darkens upon exposure to air and light. Dimethylaniline is widely used as an intermediate in the production of dyes, antioxidants, and photographic chemicals. It also serves as a solvent and a reagent in organic synthesis. Due to its toxic and potentially carcinogenic properties, it should be handled with care in well-ventilated environments. Chemical formula: C₆H₅N(CH₃)₂

More about C8H11N (Dimethylaniline, DMA) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/organic/C8H11N - dimethylaniline/nk/Li.yml
ID: ds_915ea517f250
API: /v1/datasets/ds_915ea517f250

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