nematic liquid crystal 5cb  (Tokyo Chemical Industry)

Journal: Materials

Article Title: Electro-Optic Kerr Response in Optically Isotropic Liquid Crystal Phases

doi: 10.3390/ma17194926

Figure Lengend Snippet: Chemical structure of the molecules forming the LC mixture used in this study: nematic host 5CB ( a ) and chiral dopant CE2 ( b ), where l is the length of the molecule. Elements are marked with colors: gray—carbon, blue—nitrogen, red—oxygen, white—hydrogen.

Article Snippet: The materials used in this study were mixtures of the nematic liquid crystal 5CB (4-cyano-4′-pentylbiphenyl) with a chiral dopant CE2 [4′′-(2-methylbutylphenyl)-4′-(2-methylbutyl)-4-biphenylcarboxylate (Merck KGaA, Darmstadt, Germany)], and they are shown in .

Techniques:

Journal: Materials

Article Title: Electro-Optic Kerr Response in Optically Isotropic Liquid Crystal Phases

doi: 10.3390/ma17194926

Figure Lengend Snippet: Phase transition temperatures for the different 5CB/CE2 mixtures. The concentration of dopant is given as a percentage by weight (wt.%).

Article Snippet: The materials used in this study were mixtures of the nematic liquid crystal 5CB (4-cyano-4′-pentylbiphenyl) with a chiral dopant CE2 [4′′-(2-methylbutylphenyl)-4′-(2-methylbutyl)-4-biphenylcarboxylate (Merck KGaA, Darmstadt, Germany)], and they are shown in .

Techniques: Sublimation, Concentration Assay

Journal: Materials

Article Title: Electro-Optic Kerr Response in Optically Isotropic Liquid Crystal Phases

doi: 10.3390/ma17194926

Figure Lengend Snippet: The inverse of the Kerr constant of the 5CB/CE2 mixtures as a function of the temperature above the clearing temperature, T c . In panel ( a ), the results are for one wavelength ( λ = 532 nm) and different concentrations given in the graph. In panel ( b ), the results are for one concentration (30 wt.%) and three wavelengths. The symbols are the data of this work and the black filled-in circles in ( b ) are from . The lines are linear fits to the experimental data of this work.

Article Snippet: The materials used in this study were mixtures of the nematic liquid crystal 5CB (4-cyano-4′-pentylbiphenyl) with a chiral dopant CE2 [4′′-(2-methylbutylphenyl)-4′-(2-methylbutyl)-4-biphenylcarboxylate (Merck KGaA, Darmstadt, Germany)], and they are shown in .

Techniques: Concentration Assay

Journal: Materials

Article Title: Electro-Optic Kerr Response in Optically Isotropic Liquid Crystal Phases

doi: 10.3390/ma17194926

Figure Lengend Snippet: The least squares linear fit parameters of 1 / K data, such as in , of the 5CB/CE2 mixtures for three λ as a function of the CE2 dopant concentration. The symbols are the experimentally derived slope C − 1 , and the Δ T * values and the dashed lines are meant to guide the eye.

Article Snippet: The materials used in this study were mixtures of the nematic liquid crystal 5CB (4-cyano-4′-pentylbiphenyl) with a chiral dopant CE2 [4′′-(2-methylbutylphenyl)-4′-(2-methylbutyl)-4-biphenylcarboxylate (Merck KGaA, Darmstadt, Germany)], and they are shown in .

Techniques: Concentration Assay, Derivative Assay

Journal: Materials

Article Title: Electro-Optic Kerr Response in Optically Isotropic Liquid Crystal Phases

doi: 10.3390/ma17194926

Figure Lengend Snippet: Temperature and wavelength (dispersion) dependence of the inverse Kerr constant of two 5CB/CE2 liquid mixtures, with dopant concentrations of 10 wt.% and 50 wt.%. The colored solid lines are 1 / K ( T ) for three wavelengths: λ 1 , λ 2 and λ 3 . Examples of 1 / K ( λ ) are denoted as solid black lines. The surface is given by the relations in Equations and with the parameters T w = − 1.3 , a 1 = 7.4146 · 10 − 8 , b 1 = 66,626 and b 2 = 131,570 for concentration 10 wt.%, and T w = − 0.17 , a 1 = 6.4931 · 10 − 8 , b 1 = 32,102 and b 2 = 49,603 for concentration 50 wt.%.

Article Snippet: The materials used in this study were mixtures of the nematic liquid crystal 5CB (4-cyano-4′-pentylbiphenyl) with a chiral dopant CE2 [4′′-(2-methylbutylphenyl)-4′-(2-methylbutyl)-4-biphenylcarboxylate (Merck KGaA, Darmstadt, Germany)], and they are shown in .

Techniques: Dispersion, Concentration Assay

Journal: Materials

Article Title: Electro-Optic Kerr Response in Optically Isotropic Liquid Crystal Phases

doi: 10.3390/ma17194926

Figure Lengend Snippet: The Kerr constant as a function of temperature in the BPII phase and isotropic phase in the 5CB/CE2 mixtures for λ = 589 nm and three concentrations. In the BPII phase, the symbols are the experimental data and the solid line is the K representation given in Equation , with the constants ( W × 10 − 9 , D × 10 − 9 , η ) for concentrations 25 wt.%, 30 wt.%, 35 wt.%, respectively, being ( 0.280 , 1.6265 , − 4.5608 ), ( 0.359 , 2.4681 , − 4.7387 ), ( 0.370 , − 4.5362 , 5.7402 ). The constants D , W are in 1 / K units, i.e., V 2 / m and η in °C −1 .

Article Snippet: The materials used in this study were mixtures of the nematic liquid crystal 5CB (4-cyano-4′-pentylbiphenyl) with a chiral dopant CE2 [4′′-(2-methylbutylphenyl)-4′-(2-methylbutyl)-4-biphenylcarboxylate (Merck KGaA, Darmstadt, Germany)], and they are shown in .

Techniques:

Journal: Nanomaterials

Article Title: Study on the Memory Effect in Aerosil-Filled Nematic Liquid Crystal Doped with Magnetic Nanoparticles

doi: 10.3390/nano13232987

Figure Lengend Snippet: Light transmission dependence on the electric field for the 5CB liquid crystal doped with SiO 2 nanoparticles at concentrations of 1.0 wt.% ( a ) and 0.5 wt.% ( b ) including their mixture with Fe 3 O 4 nanoparticles with a volume fraction of 10 −4 measured in increasing (full lines) and decreasing regimes (dotted lines). The measurements were conducted at 25 °C.

Article Snippet: The LC composites were based on 5CB nematic liquid crystals (with a nematic–isotropic transition temperature of 35 °C) and silica nanoparticles, Aerosil R812 (~7 nm) nanoparticles, obtained from Evonik Industries (Essen, Germany).

Techniques: Transmission Assay

Journal: Nanomaterials

Article Title: Study on the Memory Effect in Aerosil-Filled Nematic Liquid Crystal Doped with Magnetic Nanoparticles

doi: 10.3390/nano13232987

Figure Lengend Snippet: Comparisons of light transmission dependences on the electric field for the 5CB liquid crystal doped with SiO 2 nanoparticles at a concentration of 0.5 wt.% ( a ) and its mixture with Fe 3 O 4 nanoparticles with a volume fraction of 10 −4 ( b ) measured for two different voltage ranges: 0–5 V and 0–10 V, in increasing (full lines) and decreasing regimes (dotted lines). The measurements were conducted at 25 °C.

Article Snippet: The LC composites were based on 5CB nematic liquid crystals (with a nematic–isotropic transition temperature of 35 °C) and silica nanoparticles, Aerosil R812 (~7 nm) nanoparticles, obtained from Evonik Industries (Essen, Germany).

Techniques: Transmission Assay, Concentration Assay

Journal: Nanomaterials

Article Title: Study on the Memory Effect in Aerosil-Filled Nematic Liquid Crystal Doped with Magnetic Nanoparticles

doi: 10.3390/nano13232987

Figure Lengend Snippet: Light transmission dependences on the electric field for the 5CB composition with SiO 2 nanoparticles at a concentration of 1.0 wt.% ( a ) including their mixture with Fe 3 O 4 nanoparticles with a volume fraction of 10 −4 ( b ) measured in the electric field to compare their development measured one after another in interval 1.0 h in increasing (full lines) and decreasing regimes (dotted lines). The measurements were conducted at 25 °C.

Article Snippet: The LC composites were based on 5CB nematic liquid crystals (with a nematic–isotropic transition temperature of 35 °C) and silica nanoparticles, Aerosil R812 (~7 nm) nanoparticles, obtained from Evonik Industries (Essen, Germany).

Techniques: Transmission Assay, Concentration Assay

Journal: Nanomaterials

Article Title: Study on the Memory Effect in Aerosil-Filled Nematic Liquid Crystal Doped with Magnetic Nanoparticles

doi: 10.3390/nano13232987

Figure Lengend Snippet: Summarization of light transmission dependences on the electric field for all the investigated 5CB composites, including pure 5CB, measured in an increasing regime. The measurements were conducted at 25 °C.

Article Snippet: The LC composites were based on 5CB nematic liquid crystals (with a nematic–isotropic transition temperature of 35 °C) and silica nanoparticles, Aerosil R812 (~7 nm) nanoparticles, obtained from Evonik Industries (Essen, Germany).

Techniques: Transmission Assay

Journal: Nanomaterials

Article Title: Study on the Memory Effect in Aerosil-Filled Nematic Liquid Crystal Doped with Magnetic Nanoparticles

doi: 10.3390/nano13232987

Figure Lengend Snippet: Light transmission dependencies on the magnetic field for the 5CB liquid crystal doped with SiO 2 nanoparticles at a concentration of 1.0 wt.% ( a ) and 0.5 wt.% ( b ) including their mixture with Fe 3 O 4 nanoparticles with a volume fraction of 10 −4 measured in increasing (full lines) and decreasing regimes (dotted lines). The measurements were conducted at 25 °C.

Article Snippet: The LC composites were based on 5CB nematic liquid crystals (with a nematic–isotropic transition temperature of 35 °C) and silica nanoparticles, Aerosil R812 (~7 nm) nanoparticles, obtained from Evonik Industries (Essen, Germany).

Techniques: Transmission Assay, Concentration Assay

Journal: Nanomaterials

Article Title: Study on the Memory Effect in Aerosil-Filled Nematic Liquid Crystal Doped with Magnetic Nanoparticles

doi: 10.3390/nano13232987

Figure Lengend Snippet: SAW attenuation response of the 5CB liquid crystal doped with SiO 2 nanoparticles at a concentration of 1.0 wt.% ( a ) and their mixture with Fe 3 O 4 nanoparticles with a volume fraction of 10 −4 ( b ) on the electric field, including pure 5CB ( a ). The dotted lines represent the second measurement after 20 min ( a ) and 1.5 h ( b ), respectively. The measurements were conducted at 25 °C. Arrows denote increasing and/or decreasing regimes.

Article Snippet: The LC composites were based on 5CB nematic liquid crystals (with a nematic–isotropic transition temperature of 35 °C) and silica nanoparticles, Aerosil R812 (~7 nm) nanoparticles, obtained from Evonik Industries (Essen, Germany).

Techniques: Concentration Assay

Journal: Nanomaterials

Article Title: Study on the Memory Effect in Aerosil-Filled Nematic Liquid Crystal Doped with Magnetic Nanoparticles

doi: 10.3390/nano13232987

Figure Lengend Snippet: SAW attenuation response of the 5CB liquid crystal doped with SiO 2 nanoparticles with a concentration of 1.0 wt.% ( a ) and their mixture with Fe 3 O 4 nanoparticles with volume fraction 10 −4 ( b ) on the magnetic field, including pure 5CB ( a ). The measurements were conducted at 25 °C. Red lines represent the second measurement after 1.5 h ( a ) and 20 min ( b ), respectively, measured in increasing (full lines) and decreasing regimes (dotted lines).

Article Snippet: The LC composites were based on 5CB nematic liquid crystals (with a nematic–isotropic transition temperature of 35 °C) and silica nanoparticles, Aerosil R812 (~7 nm) nanoparticles, obtained from Evonik Industries (Essen, Germany).

Techniques: Concentration Assay

Journal: Nanomaterials

Article Title: Study on the Memory Effect in Aerosil-Filled Nematic Liquid Crystal Doped with Magnetic Nanoparticles

doi: 10.3390/nano13232987

Figure Lengend Snippet: Temperature dependences of the SAW attenuation response for all investigated 5CB composites, doped with SiO 2 nanoparticles at concentrations of 0.5 and 1.0 wt.% as well as their mixture with Fe 3 O 4 nanoparticles with a volume fraction of 10 −4 , including pure 5CB.

Article Snippet: The LC composites were based on 5CB nematic liquid crystals (with a nematic–isotropic transition temperature of 35 °C) and silica nanoparticles, Aerosil R812 (~7 nm) nanoparticles, obtained from Evonik Industries (Essen, Germany).

Techniques: