Effect of CdSe/ZnS semiconductor quantum dots on the dynamic properties of nematic liquid-crystalline medium

Shurpo, N. A.; Vakshtein, M. S.; Каманина, Н. В.

doi:10.1134/s1063785010040097

Cited by 41 publications

(19 citation statements)

References 8 publications

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“…Kinkead and Hegmann [19] have observed that the size, capping agent, and concentration of different QDs play an important role in modifying the electro-optical properties such as lowering of threshold voltage and elastic constant of nematic LC mixtures. Shurpo et al have observed the fast reorientation of LC molecules from planar to homeotropic position by introducing the CdSe/ZnS QDs into LC mixture [20]. However, the studies based on LC/QDs composites are based on nematic LCs and have been rarely reported in ferroelectric liquid-crystal (FLC) materials [21,22].…”

Section: Introductionmentioning

confidence: 99%

Effect of cadmium telluride quantum dots on the dielectric and electro-optical properties of ferroelectric liquid crystals

Kumar

Biradar

2011

Phys. Rev. E

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We present here the dielectric and electro-optical studies of cadmium telluride quantum dots (CdTe QDs) doped ferroelectric liquid crystals (FLCs). It has been observed that the doping of CdTe QDs not only induced a pronounced memory effect but also affected the physical parameters of FLC material (LAHS19). The modifications in the physical parameters and memory effect of LAHS19 are found to depend on the concentration ratio of CdTe QDs. The lower concentration of CdTe QDs (1-3 wt%) enhanced the values of spontaneous polarization and rotational viscosity of LAHS19 material but did not favor the memory effect, whereas a higher concentration of CdTe QDs (>5 wt%) degraded the alignment of LAHS19 material. The doping of ∼5 wt% of CdTe QDs is found to be the most suitable for achieving good memory effect without significantly affecting the material parameters.

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Section: Introductionmentioning

confidence: 99%

Effect of cadmium telluride quantum dots on the dielectric and electro-optical properties of ferroelectric liquid crystals

Kumar

Biradar

2011

Phys. Rev. E

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“…Two groups have used CdSe-ZnS QDs as dopants to modulate the electro-optical properties of the nematic phase of cyanophenyl-based mixtures. Here, a decrease in the ON and OFF switching times (rise and fall times) 132 with larger CdSeZnS (4.5-6 nm) as well as reduced V th values, phase delay and dielectric permittivity 133 with smaller particles (3.5 nm) have been demonstrated separately.…”

Section: 130mentioning

confidence: 79%

Quantum dots as liquid crystal dopants

2012

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Liquid crystal nanoscience, a field exploring the mutually beneficial combination of the unique properties of nanoscale materials and fluid, yet ordered liquid crystalline phases, is increasingly focusing on semiconductor quantum dots. In one major research thrust, the anisotropic properties of the liquid crystal host are sought to facilitate the assembly of quantum dots into arrays, in another, both size-and shape-dependent optical and electronic properties of quantum dots are used to manipulate optical, electro-optical and alignment properties of liquid crystalline materials. This feature article reviews recent accomplishments and new insights in this fascinating area of soft matter nanocomposites including work from our laboratory on a series of CdSe and CdTe quantum dots as additives in nematic liquid crystal hosts.

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“…Liquid crystalline materials possess many applications in scientific and technological areas, in particular as display devices, organic light emitting diodes (OLEDs), anisotropic networks, photoconductors and semiconductor materials [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Synthesis mesomorphic and theoretical studies of some new unsymmetrical dimeric ethers of 6-amino-1,3-dimethyluracil and biphenyl cores

Mohammad

Srinivasa

Mohammed

et al. 2016

Journal of Molecular Structure

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Effect of CdSe/ZnS semiconductor quantum dots on the dynamic properties of nematic liquid-crystalline medium

Cited by 41 publications

References 8 publications

Effect of cadmium telluride quantum dots on the dielectric and electro-optical properties of ferroelectric liquid crystals

Effect of cadmium telluride quantum dots on the dielectric and electro-optical properties of ferroelectric liquid crystals

Quantum dots as liquid crystal dopants

Synthesis mesomorphic and theoretical studies of some new unsymmetrical dimeric ethers of 6-amino-1,3-dimethyluracil and biphenyl cores

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