Enhanced dielectric and electro-optical properties of a newly synthesised ferroelectric liquid crystal material by doping gold nanoparticle-decorated multiwalled carbon nanotubes

Tripathi, Siddharth; Prakash, Jai; Chandran, Achu; Joshi, Tilak; Kumar, Anil; Dhar, Ajay; Biradar, A. M.

doi:10.1080/02678292.2013.805830

Cited by 30 publications

(14 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3][4][5]30] The number of publication devoted to study the ferroelectric liquid crystals (FLC) as the host media have been increasing for the moment. [12,14,17,[21][22][23][24][25]27,28,[31][32][33] Unfortunately, not all of the works cited above contain reliable evidence for the absence of aggregation in such composites (observation of the bulk by the naked eye is not considered as evidence). This undesirable process is often observed irrespectively of the type of the NPs [3][4][5]18,22,23,25,34] and it severely restricts careful investigations on these materials.…”

Section: Introductionmentioning

confidence: 90%

“…[1][2][3][4][5] Such materials combine technological potential of LC with unique properties of NPs. Thus, NPs dispersed in LCs can improve magnetic, [6][7][8][9][10][11][12][13][14][15][16][17] electrooptic and dielectric [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] properties to the resultant material. Typically, nematic LCs are mostly used as a carrier for such composites.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dielectric properties of magnetic nanoparticles’ suspension in a ferroelectric liquid crystal

et al. 2015

View full text Add to dashboard Cite

Colloids of elongated γ-Fe 2 O 3 magnetic nanoparticles (NPs) in a ferroelectric liquid crystal (FLC) were studied. Decreasing the dielectric strength of the Goldstone mode and changing the value of Cole-Cole parameter were found in the suspensions. It was also shown that the effect of introducing magnetic particles into a FLC consists of increasing the electric field strength magnitude required for unwinding its helical structure. Effect of magnetic field on dielectric properties of the FLC colloid was also studied. Dielectric constant measured under static magnetic field is different for the FLC host and FLC doped with the NPs.

show abstract

Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Dielectric properties of magnetic nanoparticles’ suspension in a ferroelectric liquid crystal

et al. 2015

View full text Add to dashboard Cite

show abstract

“…CdTe QDs [9] Decreased ≈32% Not studied ZnS QDs [10] Not studied Increased CNT [12] Decreased ≈34% Not studied ZnO QDs [33] Not studied Increased MWCNTs [34] No remarkable change Not studied GQDs (present study)…”

Section: Effect On Pl Intensitymentioning

confidence: 86%

Enhancement of electro-optical response of ferroelectric liquid crystal: the role of graphene quantum dots

Kuḿar

Kumar

Biradar³

et al. 2014

Liquid Crystals

Self Cite

View full text Add to dashboard Cite

We present a pioneer study depicting a significant improvement in the photoluminescence (PL) intensity and display of an expeditious electro-optic response of ferroelectric liquid crystal (FLC) when doped with graphene quantum dots (GQDs). Significant threefold enhancement in PL intensity of GQDs/FLC composite material can be ascribed to the additive combination of emissions from GQDs and FLCs. Furthermore, promptness in electrooptical response by a factor of 34% can be attributed to the lowering of rotational viscosity of the FLC material due to the incorporation of GQDs. These results would certainly be helpful in realisation of highly luminescent and faster generation of LC systems.

show abstract

“…The dielectric and electro-optical studies were done and the observed effects have been attributed to decrease in rotational viscosity of the FLC material and to trapping of ions on the surface of copper oxide decorated CNTs. The gold nanoparticle-decorated MWCNT doped FLC LAHS 22 material was studied using dielectric relaxation spectroscopy, differential scanning calorimetry and polarization optical microscopy [229]. The doping resulted in enhancement of the dielectric and electro-optical characteristics.…”

Section: Functionalized and Metal Nanoparticle Decorated Cntsmentioning

confidence: 99%

Carbon Nanotubes in Liquid Crystals: Fundamental Properties and Applications

Lisetski

Soskin

Lebovka

2015

Springer Proceedings in Physics

View full text Add to dashboard Cite

The structure and properties of liquid crystalline suspensions filled by carbon nanotubes (CNTs) are critically reviewed. Special attention is paid to interactions between CNTs and molecules of the liquid crystals (LC), which lead to formation of ordered supramolecular structures. These structures, in turn, determine unique physical properties of LC + CNT suspensions, including electrical conductivity, dielectric permittivity, phase transitions, optical transmission, memory effects that can be used in electrooptic and optoelectronic devices, etc. Great variety of LC phases are considered as a host media, such as nematics, cholesterics, smectics of different types (including ferroelectrics), lyotropic, chromonic, ionic and hydrogen-bonded liquid crystals. Alongside multi-and single-walled carbon nanotubes, the suspensions can also contain the platelets of organoclays used for facilitation of CNT dispersing. Recent practical applications of LC + CNT suspensions and nanomaterials based thereon are also outlined.

show abstract

Enhanced dielectric and electro-optical properties of a newly synthesised ferroelectric liquid crystal material by doping gold nanoparticle-decorated multiwalled carbon nanotubes

Cited by 30 publications

References 21 publications

Dielectric properties of magnetic nanoparticles’ suspension in a ferroelectric liquid crystal

Dielectric properties of magnetic nanoparticles’ suspension in a ferroelectric liquid crystal

Enhancement of electro-optical response of ferroelectric liquid crystal: the role of graphene quantum dots

Carbon Nanotubes in Liquid Crystals: Fundamental Properties and Applications

Contact Info

Product

Resources

About