Photo responsive silver nanoparticles incorporated liquid crystalline elastomer nanocomposites based on surface plasmon resonance

Zhang, Jindi; Wang, Jun; Zhao, Lina; Yang, Wenlong; Meng, Bo; Yu-chang, Wang; Huang, Niu; Li, Yuxin; Wang, Binsong; Gao, Yachen; Li, Chensha; Huang, Xuezhen

doi:10.1007/s40242-017-7067-0

Cited by 12 publications

(10 citation statements)

References 42 publications

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“…Moreover, ΔT < T trans which could be amplified by elevating the incident wavelength intensity to 1.5x10 5 lux. The study also suggested that tensile strength for 0.1 wt% < 0.2 wt% by 40% [104]. Comparing this study with Pezzi et al Au LC revealed that although with similar T trans , actuation time was half and relaxation was one-fourth to that in Ag which may be attributed to low band gap and high conductivity in Au [97,104].…”

Section: Metal Nanoparticle Activated Lcsupporting

confidence: 70%

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

Rastogi

Njuguna

Kandasubramanian

2019

European Polymer Journal

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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.

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Section: Metal Nanoparticle Activated Lcsupporting

confidence: 70%

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

Rastogi

Njuguna

Kandasubramanian

2019

European Polymer Journal

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“…Additional potential applications of gold-nanoparticle-doped LCEs range from contact-free actuation of colloidal micro-particles to micro-fluidics and opto-mechanics, as also supported by recent theoretical investigations [82]. Very recent works on nanostructured LCE-based materials were published aiming to introduce copper-sulfide nanoparticles [83] and silver nanoparticles [84] into the LCE matrix to induce photo-actuation mechanisms.…”

Section: Lce-based Composites With Other Nanomaterialsmentioning

confidence: 99%

Nanostructured Composites Based on Liquid-Crystalline Elastomers

et al. 2018

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Liquid-crystalline elastomers (LCEs) are the object of many research investigations due to their reversible and controllable shape deformations, and their high potential for use in the field of soft robots and artificial muscles. This review focuses on recent studies about polymer composites based on LCEs and nanomaterials having different chemistry and morphology, with the aim of instilling new physical properties into LCEs. The synthesis, physico-chemical characterization, actuation properties, and applications of LCE-based composites reported in the literature are reviewed. Several cases are discussed: (1) the addition of various carbon nanomaterials to LCEs, from carbon black to carbon nanotubes, to the recent attempts to include graphene layers to enhance the thermo-mechanic properties of LCEs; (2) the use of various types of nanoparticles, such as ferroelectric ceramics, gold nanoparticles, conductive molybdenum-oxide nanowires, and magnetic iron-oxide nanoparticles, to induce electro-actuation, magnetic-actuation, or photo-actuation into the LCE-based composites; (3) the deposition on LCE surfaces of thin layers of conductive materials (i.e., conductive polymers and gold nanolayers) to produce bending actuation by applying on/off voltage cycles or surface-wrinkling phenomena in view of tunable optical applications. Some future perspectives of this field of soft materials conclude the review.

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“…The associated SPR generated strong photothermal conversion in metal nanomaterials, , whose magnitudes are higher by generally several orders compared to conventional light absorbers, thus resulting in great potential in a variety of applications, such as therapy, , sensing, gene delivery, etc. It is also interesting to utilize the SPR characteristic of nanometals in the exploration of photoactuated LCE materials. − The wavelength range and peak position of SPR optical absorption highly depend on the type, shape, and size of the nanometals and thus can be tuned to different spectral regions . This feature paves the way for the realization of wavelength-selective actuation of light-responsive LCE materials.…”

Section: Introductionmentioning

confidence: 99%

“…This feature paves the way for the realization of wavelength-selective actuation of light-responsive LCE materials. Our previous work indicated that the wide-spectrum light sources, whose emission spectra covered the SPR absorption bands of both nanosilver and nanogold, could effectively actuate the LCE materials incorporated with nanogold or nanosilver. , In order to facilitate the wavelength-selective actuators to a new height, we report in this work a strategy of using the difference of SPR absorption bands of nanosilver and nanogold to achieve the wavelength-selective actuation of LCE materials and constructing multiwavelength controlled LCE smart devices capable of performing diversified functions. This is based on the selective stimuli-response of different domains of LCE actuators with hierarchical structures through modulating different wavelength bands of a visible light irradiation so that the actuation systems avoid the restriction of light scanning direction or position.…”

Section: Introductionmentioning

confidence: 99%

Optical Wavelength Selective Photoactuation of Nanometal-Doped Liquid Crystalline Elastomers by Using Surface Plasmon Resonance

Zhao

Qin

et al. 2021

ACS Appl. Mater. Interfaces

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Photoactuated liquid crystalline elastomer (LCE) materials are gaining much attention in many application fields, but challenges for the precise modulation of their photoresponses still exist. Researchers have explored various optical parameters, such as polarization, intensity, and wavelength, to obtain differential responses. The development of photoactuated LCE materials with wavelength-selective responsiveness is more versatile and has attracted more interest, but such LCE materials are commonly prepared by incorporating different molecular chromophores or dyes into the LCE matrices. When the surface plasmon resonance (SPR) characteristic of nanometals, which can generate strong photothermal conversion, and the difference of SPR absorption wavelength bands of different nanometals are considered, a strategy of constructing wavelength-selective actuation of LCE materials by using the SPR photothermal effect can be demonstrated, as done herein. The LCE nanocomposites doped by nanogold or nanosilver were fabricated and exhibited good SPR absorption but in different wavelength bands of the visible spectrum range. They had strong actuation under light irradiation with the wavelengths being inside their respective absorption band but could not be effectively actuated by the light beyond their respective absorption band. A smart electronic device, implementing a hierarchical structured LCE nanocomposite doped by nanogold and nanosilver in different domains as the two-switch actuator, was prepared and capable of outputting different signals in response to the different wavelength bands filtered from a light source, which released the actuator from the restriction of light scanning direction or position. Our work provides new insights for the convenient and precise photoactuation of the LCE actuators.

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Photo responsive silver nanoparticles incorporated liquid crystalline elastomer nanocomposites based on surface plasmon resonance

Cited by 12 publications

References 42 publications

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

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

Nanostructured Composites Based on Liquid-Crystalline Elastomers

Optical Wavelength Selective Photoactuation of Nanometal-Doped Liquid Crystalline Elastomers by Using Surface Plasmon Resonance

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