The effect of magnetic nanoparticles size and concentration on nematic liquid crystal (NLC) behavior in a field was investigated. magneto-optical investigation using measurements the light transmission through used to study structural changes induced by an applied weak field. Magnetic Fe

By integrating nanoparticles with magnetic properties into liquid crystals their can be tuned to increase or decrease behavior under external fields. Synthetized shapes and various concentrations defines interactions crystal host. An investigation of colloidal stability structural changes in host is presented, considering the effects fields on (LCs) dopands. A distinctive difference light transmission responses was observed studied nematic LC (NLC) samples as compared undoped crystals....

The effect of rod-like magnetic particles on liquid crystal (6CHBT) structural changes in electric and weak fields were studied by means the attenuation surface acoustic wave frequency 30 MHz propagating along ferronematic crystals.Three low volume concentrations (Φ = 1 × 10 -5 , -4 and1 -3 ) added to during its isotropic phase.Several measurements including investigation effects electrical applied both separately conjunction as well influence temperature performed.The distinctive responses...

The effect of multi-walled carbon nanotubes (MWCNT) and functionalized MWCNT (MWCNT/Fe3O4) on structural changes in thermotropic liquid crystal (6CHBT) was studied using the attenuation measurement surface acoustic wave (SAW) propagating along crystal. Both kinds nanoparticles low volume concentration (1 × 10–4) were added to during its isotropic phase. Pure 6CHBT used for comparison orientational coupling crystals molecules with both types nanotubes. These observations proved, that doping...

The surface acoustic waves (SAWs) were used to study the effect of magnetic nanoparticles on nematic liquid crystal (NLC) behavior in weak and electric fields. measurement attenuation SAW propagating along interface between piezoelectric substrate is showed as an effective tool processes structural changes. Fe3O4 nanorod shape different low volume concentration added NLC (4-(trans-4′-n-hexylcyclohexyl)-isothiocyanatobenzene (6CHBT)) during its isotropic phase. In contrast undoped crystals...

The effect of magnetic nanoparticles low concentrations and different shapes, including spherical, rodlike, chain-like shape on the magneto-optical response nematic liquid crystal 6CHBT is investigated.The was examined using a linearly polarized laser beam (532 nm) passed through cell under both increasing pulsed fields.The analysis observed characteristics time responses confirmed role concentration particles resultant behavior concerning its stability switching time.

The effect of the liquid crystalline host on structural changes in magnetosomes based ferronematics is studied using surface acoustic wave (SAW) technique supported by some capacitance and light transmission measurements. measurement attenuation response SAW propagating along interface between LC piezoelectric substrate used to study processes under magnetic field. magnetosome nanoparticles same volume concentration were added three different nematic LCs, 5CB, 6CB, E7. Unlike undoped...

A composite ferronematic system based on the nematic liquid crystal E7, doped with lath-like goethite magnetic nanoparticles of volume concentrations 10−3, 5 × 10−4, and 10−5, was investigated. Both surface acoustic waves (SAWs) magneto-optical effect were used to study influence crystals’ structural changes, focused above all transitions. The responses SAW attenuation light transmission external fields investigated experimentally under linearly increasing/decreasing or jumped (time...

The effect of spherical magnetic nanoparticles with different size (5, 10, 15, and 20 nm) volume concentration (10-3, 5 × 10-4, 10-4) on liquid crystal 4-cyano-4'-hexylbiphenyl (6CB) behavior was investigated using surface acoustic wave (SAW). attenuation response SAW propagating along the substrate/liquid interface used to study structural changes induced by an applied field. obtained results showed shift threshold field increase in toward lower fields also decrease isotropic-nematic phase...

A study on 5CB liquid crystal composites with SiO2 nanoparticles and an additional commixture Fe3O4 using light transmission SAW measurements is presented. The prepared exhibited interesting memory effect characterized by the hysteresis of both attenuation responses investigated in nematic phase. While case as dopants, composite showed improvement effect, addition magnetic resulted decreasing. Additional studies a significant shift threshold voltage nematic–isotropic transition temperature....

Using both acoustic and optical techniques in liquid crystals doped with superionic compounds Cu <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> PSI xmlns:xlink="http://www.w3.org/1999/xlink">5</sub> /CU xmlns:xlink="http://www.w3.org/1999/xlink">7</sub> PS 50:50 ratio dispersed crystal host, where structural changes on applied electric field are observed. The investigation methods involve measurements of attenuation surface waves (SAW)...

A study of the role diamond nanoparticles on 5CB liquid crystal composites with Fe3O4 is presented. Composite ferronematic systems based nematic doped magnetic and additionally bound to (DNPs), a volume concentration 3.2 mg/mL, 1.6 mg/mL 0.32 were investigated using both magneto-optical effect surface acoustic waves (SAWs) structural properties crystals. The responses light transmission SAW attenuation an external field experimentally under linearly increasing decreasing field, respectively....

Structural changes in the nematic liquid crystal 6CHBT doped with a low concentration (1×10 -4 , 5×10 ) of magnetic nanorods induced by weak field increasing/decreasing mode, as well pulsed regime are investigated using surface acoustic waves and magneto-optical effect.The responses both attenuation optical transmission linearly polarized laser beam (532 nm) passing through sample were investigated.The role on structural corresponding behavior concerning system stability switching time under...

The effect of two types superionic nanoparticles; Cu7GeS5I and Ag7GeS5I, respectively on nematic liquid crystal (6CB) behavior under an external electric field is investigated. response both attenuation surface acoustic waves propagating along with the substrate/liquid interface light transmission are used to study structural changes induced by applied field. increasing/decreasing regime as well jumped change were used. was investigated using linearly polarized laser beam (532 nm) through...

The doping of liquid crystals (LCs) with carbon nanotubes and magnetic nanoparticles have attracted wide interest in many areas science, technology medicine. LCs occur as additional, thermodynamically stable states matter between the state crystal some materials. They can be characterized by a long-range orientational order molecules and, consequence, an anisotropy their physical properties. oriented under electric or fields due to dielectric permittivity diamagnetic susceptibility. Carbon...

Structural changes in transformer oil-based magnetic fluids under fields are investigated using surface acoustic waves.The measurement of the attenuation SAW propagating along interface between fluid and substrate is showed as an effective tool to study such processes cases when obviously utilized longitudinal waves due higher viscosity not available.The particles FeO•Fe2O3 several different volume concentrations were added oil MOL.The interactions field moments nanoparticles lead...