Blue Phase Range Widening Induced by Laponite Nanoplatelets in the Chiral Liquid Crystal CE8

Lavrič, Marta; Tzitzios, Vasileios; Cordoyiannis, George; Kralj, Samo; Nounesis, George; Lelidis, I.; Kutnjak, Zdravko

doi:10.1080/15421406.2015.1066554

Cited by 14 publications

(7 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The small spherical QDs of the present and previous studies [44,45] exhibit a minor shift of the BPIII-I transition temperature to slightly higher or lower values (depending on the QDs size, surface functionalization, and the LC host). On the contrary, large anisotropic NPs, such as graphene, laponite, and MoS 2 nanosheets, systematically upshift the BPIII-I transition temperature even at minute concentrations [55][56][57]67]. This trend confirmed by other studies [68,69] is attributed to the ordering of LC molecules induced within the I phase by the large surfaces of nanosheets.…”

Section: Discussionsupporting

confidence: 77%

“…This trend confirmed by other studies [68,69] is attributed to the ordering of LC molecules induced within the I phase by the large surfaces of nanosheets. It also explains why large anisotropic NPs with similar surface functionalization promote the stabilization of the more ordered BPI structure over the less ordered, macroscopically amorphous BPIII [55][56][57]67].…”

Section: Discussionmentioning

confidence: 95%

See 1 more Smart Citation

Quantum Dot-Driven Stabilization of Liquid-Crystalline Blue Phases

et al. 2020

Self Cite

View full text Add to dashboard Cite

Liquid crystals hosting nanoparticles comprise a fascinating research field, ranging from fundamental aspects of phase transitions to applications in optics and photonics. Liquid-crystalline phases exhibit topological defects that can be used for assembly of nanoparticles in periodical arrays, and at the same time, the nanoparticles can increase the stability range of liquid-crystalline phases. This has been experimentally demonstrated over the past few years in the case of blue phases that are present in some strongly chiral liquid crystals. Experimental results in quantum dot-driven blue phase stabilization are presented here by means of high-resolution calorimetry and polarizing optical microscopy. It is demonstrated that quantum dots essentially stabilize the macroscopically amorphous blue phase III. There are discussed similarities and differences between the effects of spherical and anisotropic nanoparticles on blue phase stabilization; moreover, future prospects and trends in the field are addressed.

show abstract

Section: Discussionsupporting

confidence: 77%

Section: Discussionmentioning

confidence: 95%

Quantum Dot-Driven Stabilization of Liquid-Crystalline Blue Phases

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…This upshift is much stronger for large anisotropic NPs with respect to their spherical counterparts dispersed in CE8. Substantial upshift of the isotropic to the liquid-crystalline phase transition has also been reported in other studies of anisotropic NPs (e.g., laponite clay nanoplatelets, graphene oxide nanosheets, carbon nanotubes) dispersed in chiral and non-chiral LCs [77][78][79][80][81][82]. A mean-field-based interpretation has been proposed by Gorkunov and Osipov [83].…”

Section: Blue Phase and Twist-grain Boundary Phase Stabilization In Liquid Crystal Ce8 Induced By Anisotropic Nanoparticlessupporting

confidence: 56%

Experimental Advances in Nanoparticle-Driven Stabilization of Liquid-Crystalline Blue Phases and Twist-Grain Boundary Phases

et al. 2021

Self Cite

View full text Add to dashboard Cite

Recent advances in experimental studies of nanoparticle-driven stabilization of chiral liquid-crystalline phases are highlighted. The stabilization is achieved via the nanoparticles’ assembly in the defect lattices of the soft liquid-crystalline hosts. This is of significant importance for understanding the interactions of nanoparticles with topological defects and for envisioned technological applications. We demonstrate that blue phases are stabilized and twist-grain boundary phases are induced by dispersing surface-functionalized CdSSe quantum dots, spherical Au nanoparticles, as well as MoS2 nanoplatelets and reduced-graphene oxide nanosheets in chiral liquid crystals. Phase diagrams are shown based on calorimetric and optical measurements. Our findings related to the role of the nanoparticle core composition, size, shape, and surface coating on the stabilization effect are presented, followed by an overview of and comparison with other related studies in the literature. Moreover, the key points of the underlying mechanisms are summarized and prospects in the field are briefly discussed.

show abstract

“…Conflict between chirality and positional order of smectic phase is compromised when layers clubs together in form of twist grain boundary and each boundary displays rotation in helix form which also resembles screw dislocation. These can further be grouped to TGBP-A, C and C-chiral based on smectic phase present for transition [7,[23][24][25][26]. Ferroelectric LC owing to pre-occupied polarization (groups with dipole moment e.g.…”

Section: Introductionmentioning

confidence: 99%

“…However, increasing dimensions can lead to stabilization of blue phase as demonstrated by Lavrič mons mass% with potential applicability in electro-optical devices. Formulated LCs enhance stability to 6 K and 7.5 K respectively for clay and graphene (when compared to neat CE8) with both promoting formation of blue phase-I over others owing to considerable surface areas of both reinforcements [23,24]. 3).…”

Section: Introductionmentioning

confidence: 99%

Exploration of elastomeric and polymeric liquid crystals with photothermal actuation: A review

Rastogi

Njuguna

Kandasubramanian

2019

European Polymer Journal

View full text Add to dashboard Cite

Recent research in soft materials is an exhilarating category which has been transcending boundaries for variety of functional applications. This category also stems liquid crystals whose stimuli-responsive feature has fantasized researchers for application arrays in actuators and biomedical. Liquid crystals evince dual characteristics of liquid and solids empowering them to reversibly transit on external actuation. The after-effect of irradiating photons on liquid crystals (LC) facilitate outlying functioning and are engineered with gold nanorods, dyes, graphene and carbon nanotubes among others which greets to incoming stimulus and participates in transference of light energy to perceivable transformation through heat drive. This is progressively explored in medical domain for drug delivery, tissue engineering, cancer treatment, and other disciplines of medicine and bio-mimicking. Additionally, photothermal trigger equips localized punctilious treatment outshining diffusion assisted heating and enables spot treatment. However, LC utilization is burgeoning towards 3D printing, dyes ipa graphen sib tals (LC) bly tr quid crysta sit feature ha als nctio as f is an ex pli @gma ail.c manian K J, Un d eering, R ted Kin Rober e, Girinagar, characterizing it as 4D Printing. Present review framework probes LC and its photothermal actuation chemistry in the medical domain. Furthermore, it reflects on LC potential in smart manufacturing in 3D/4D printing, its challenges (limited concentration of filler, its miscibility, and actuation cycle fatigue) and future likelihood.

show abstract

Blue Phase Range Widening Induced by Laponite Nanoplatelets in the Chiral Liquid Crystal CE8

Cited by 14 publications

References 20 publications

Quantum Dot-Driven Stabilization of Liquid-Crystalline Blue Phases

Quantum Dot-Driven Stabilization of Liquid-Crystalline Blue Phases

Experimental Advances in Nanoparticle-Driven Stabilization of Liquid-Crystalline Blue Phases and Twist-Grain Boundary Phases

Exploration of elastomeric and polymeric liquid crystals with photothermal actuation: A review

Contact Info

Product

Resources

About