Multi-walled vs. single-walled carbon nanotube dispersions in nematic liquid crystals: comparative studies of optical transmission and dielectric properties

Samoilov, Andrej

doi:10.15407/fm21.02.190

Cited by 16 publications

(2 citation statements)

References 18 publications

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“…Recently, liquid crystals doped with nano-objects have emerged as novel tunable materials with advanced functionalities [41][42][43][44][45][46][47]. Electrical properties of liquid crystals doped with ferroelectric [48][49][50][51][52][53][54], magnetic [55][56][57], metal [58][59][60][61][62][63], semiconductor and dielectric [64][65][66][67][68][69], and carbon-based (fullerenes, carbon nanotubes, graphene, diamond) nanomaterials [70][71][72][73][74][75] were studied by many research teams (see also recent reviews [76,77] and references therein). The ion capturing effect is naturally expected for nanomaterials dispersed in liquid crystals.…”

Section: Introductionmentioning

confidence: 99%

On the Analogy between Electrolytes and Ion-Generating Nanomaterials in Liquid Crystals

Garbovskiy

2020

Nanomaterials

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Nanomaterials in liquid crystals are a hot topic of contemporary liquid crystal research. An understanding of the possible effects of nanodopants on the properties of liquid crystals is critical for the development of novel mesogenic materials with improved functionalities. This paper focuses on the electrical behavior of contaminated nanoparticles in liquid crystals. More specifically, an analogy between electrolytes and ion-generating nanomaterials in liquid crystals is established. The physical consequences of this analogy are analyzed. Under comparable conditions, the number of ions generated by nanomaterials in liquid crystals can be substantially greater than the number of ions generated by electrolytes of similar concentration.

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Section: Introductionmentioning

confidence: 99%

On the Analogy between Electrolytes and Ion-Generating Nanomaterials in Liquid Crystals

Garbovskiy

2020

Nanomaterials

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“…Numerous studies revealed the complex behavior of nanoparticles in liquid crystals and the possibility of several regimes, namely the ion-capturing regime (the purification of liquid crystals from ions), ion-releasing regime (the contamination of liquid crystals with ions), and no change in the concentration of ions [ 7 , 15 , 16 ]. The ionic contamination of nanomaterials is considered a major factor determining the type of the regime achieved in experiments [ 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Ion-Capturing/Ion-Releasing Processes in Liquid Crystal Devices Utilizing Contaminated Nanoparticles and Alignment Films

Garbovskiy

2018

Nanomaterials

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Various types of nanomaterials and alignment layers are considered major components of the next generation of advanced liquid crystal devices. While the steady-state properties of ion-capturing/ion-releasing processes in liquid crystals doped with nanoparticles and sandwiched between alignment films are relatively well understood, the kinetics of these phenomena remains practically unexplored. In this paper, the time dependence of ion-capturing/ion-releasing processes in liquid crystal cells utilizing contaminated nanoparticles and alignment layers is analyzed. The ionic contamination of both nanodopants and alignment films governs the switching between ion-capturing and ion-releasing regimes. The time dependence (both monotonous and non-monotonous) of these processes is characterized by time constants originated from the presence of nanoparticles and films, respectively. These time constants depend on the ion adsorption/ion desorption parameters and can be tuned by changing the concentration of nanoparticles, their size, and the cell thickness.

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The purification and contamination of liquid crystals by means of nanoparticles. The case of weakly ionized species

Garbovskiy

2016

Chemical Physics Letters

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Multi-walled vs. single-walled carbon nanotube dispersions in nematic liquid crystals: comparative studies of optical transmission and dielectric properties

Cited by 16 publications

References 18 publications

On the Analogy between Electrolytes and Ion-Generating Nanomaterials in Liquid Crystals

On the Analogy between Electrolytes and Ion-Generating Nanomaterials in Liquid Crystals

Kinetics of Ion-Capturing/Ion-Releasing Processes in Liquid Crystal Devices Utilizing Contaminated Nanoparticles and Alignment Films

The purification and contamination of liquid crystals by means of nanoparticles. The case of weakly ionized species

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