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Ionic Elastomers for Electric Actuators and Sensors Review

Chenrun Feng, C.P. Hemantha Rajapaksha, Antal Jákli

Engineering 2021, Volume 7, Issue 5,   Pages 581-602 doi: 10.1016/j.eng.2021.02.014

Abstract: A considerable amount of research has been done on ionic-elastomer-based strain, pressure, and shearIn this review, we summarize the materials and performance properties of engineered ionic elastomer actuatorsFirst, we review three classes of ionic elastomer actuators—namely, ionic polymer metal compositesperspectives for future actuators, such as adaptive four-dimensional (4D) printed systems and ionic liquidcrystal elastomers (iLCEs).

Keywords： Soft robots     Ionic electroactive elastomer     Ionic elastomer sensor     Programmable deformation     Liquidcrystal elastomer    

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Dynamic modulation performance of ferroelectric liquid crystal polarization rotators and Mueller matrix

Song ZHANG, Lelun WANG, Anze YI, Honggang GU, Xiuguo CHEN, Hao JIANG, Shiyuan LIU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 256-264 doi: 10.1007/s11465-019-0573-7

Abstract: A ferroelectric liquid crystal polarization rotator (FLCPR) has been widely used in polarization measurementmodulation performance of FLCPR directly affects the measurement accuracy of the instrument based on liquidcrystal modulation.

Keywords： ferroelectric liquid crystal polarization rotator (FLCPR)     dual liquid crystal Mueller matrix polarizer    

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Effect of polymer structures on electro-optical properties of polymer stabilized liquid crystal films

WANG Shoulian, HE Jie, ZENG Yu, YAN Bin, WANG Yinghan

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 265-268 doi: 10.1007/s11705-008-0054-8

Abstract: The polymer stabilized liquid crystal (PSLC) film is a relatively novel electro-optical material, whichobtained by dissolving a small amount of a bifunctional photoreactive monomer in a low molecular mass liquidcrystal.The effects of liquid crystal concentration, curing time, monomer structures and alignment layer on theThe results show that the transmittance in the OFF state () increased with the liquid crystal concentration
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Room temperature liquid metal: its melting point, dominating mechanism and applications

Junheng FU, Chenglin ZHANG, Tianying LIU, Jing LIU

Frontiers in Energy 2020, Volume 14, Issue 1,   Pages 81-104 doi: 10.1007/s11708-019-0653-8

Abstract: The room temperature liquid metal (LM) is recently emerging as a new class of versatile materials withfascinating characteristics mostly originated from its simultaneous metallic and liquid natures.factors like components, pressure, size and supercooling that may be critical for melting processes of liquid

Keywords： melting point     liquid metal     crystal     thermodynamics     molecular dynamics    

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High-Efficiency Circularly Polarized Phased Array Based on 5 μm-Thick Nematic Liquid Crystals: Design Article

Xin Yu Wu,Fengshuo Wan,Hongyuan Feng,Shichao Jin,Chong Guo,Yu Wei,Dunge Liu,Yuqian Yang,Longzhu Cai,Zhi Hao Jiang,Wei Hong

Engineering 2024, Volume 32, Issue 1,   Pages 70-82 doi: 10.1016/j.eng.2023.08.013

Abstract: p>This paper presents a systematic investigation and demonstration of a K-band circularly polarized liquid-crystal-basedphase-shifting radiating channels, each consisting of a circularly polarized stacked patch antenna and a liquid-crystal-basedrange of more than 360° with a figure of merit of 78.3°·dB−1 based on a liquidcrystal layer with a thickness of only 5 μm.

Keywords： Circularly polarized     Liquid crystal     Liquid-crystal-based phased array (LCPA)     Phase shifter     Over-the-air    

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Research progress on ultra-precision machining technologies for soft-brittle crystal materials

Hang GAO,Xu WANG,Dongming GUO,Yuchuan CHEN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 77-88 doi: 10.1007/s11465-017-0411-8

Abstract:

Soft-brittle crystal materials are widely used in many fields, especially optics and microelectronics

Keywords： brittle     soft     functional crystal     ultra-precision machining    

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High-Temperature Target Recognition Based on Spectral Radiation Information

Fan Xueliang,Cheng Xiaofang,Xu Jun

Strategic Study of CAE 2004, Volume 6, Issue 6,   Pages 57-62

Abstract: By optimizing the initial image capture stage, using liquid crystal light valve to make a simple modification

Keywords： video image     object recognition     radiation information     liquid crystal light valve    

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Crystal-to-crystal transformation from the triclinic to the cubic crystal system by partial desolvation

Qianqian Guo, Irmgard Kalf, Ulli Englert

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 433-439 doi: 10.1007/s11705-018-1743-6

Abstract:

Diffusion reaction of the labile building block Mg(acacCN)2 (acacCN= 3-cyanoacetylacetonate) with silver salts leads to a series of solvated Mg/Ag bimetallic coordination polymers with composition [Mg(acacCN)3Ag]·solvent. Despite their common stoichiometry, the topology of these polymers depends on the solvent of crystallization. The two-dimensional coordination compound [Mg(acacCN)3Ag]·4CHCl3 in space group P1‾ is obtained as platelet-shaped crystals from a mixture of methanol and chloroform. When kept in the reaction mixture, these thin plates within one week convert to isometric tetrahedral crystals of the 3D network [Mg(acacCN)3Ag]·2CHCl3 in the cubic space group P213. The transformation reaction proceeds via dissolution and recrystallization. The co-crystallized solvent molecules play an important role for stabilizing the target structure: They subtend Cl···Cl contacts and interact via non-classical C–H···O hydrogen bonds with the coordination framework. In the new cubic coordination network, both Mg(II) and Ag(I) adopt octahedral coordination, with unprecedented face-sharing by bridging O atoms of three acetylacetonato moieties. Prolonged standing of [Mg(acacCN)3Ag]·2CHCl3 in the reaction medium leads to further degradation, under formation of [Ag(acacCN)].

Keywords： ditopic ligand     substituted acetylacetone     desolvation     diffraction    

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Effect of hierarchical ZSM-5 zeolite crystal size on diffusion and catalytic performance of n-heptane

Shuman Xu, Xiaoxiao Zhang, Dangguo Cheng, Fengqiu Chen, Xiaohong Ren

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 780-789 doi: 10.1007/s11705-018-1733-8

Abstract: The effect of the crystal size on the catalytic cracking of -heptane was investigated and the ThieleThe crystal size affected the textual properties of the catalysts but not the acidic properties of the

Keywords： hierarchical ZSM-5     crystal size     catalytic cracking     Thiele modulus     effectiveness factor    

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Theoretical insights into influence of additives on sulfamethoxazole crystal growth kinetics and mechanisms

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1503-1515 doi: 10.1007/s11705-022-2294-4

Abstract: the initial chemical potential gradient, stirring speed, and polymer type on sulfamethoxazole (SMX) crystalTo investigate the influence of different conditions on the thermodynamic driving force of SMX crystalHowever, polyethylene glycol (PEG) promoted SMX crystal growth.In the system containing PEG 6000, crystal growth is dominated by the surface reaction.However, in the system containing PEG 20000, crystal growth is dominated by both the surface reaction

Keywords： insoluble drugs     polymer     inhibition crystallization     crystal growth kinetics     DFT calculations    

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Deep eutectic solvent inclusions for high- composite dielectric elastomers

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 996-1002 doi: 10.1007/s11705-022-2138-2

Abstract: Recent advances in novel electroactive devices have placed new requirements on material development. High-performance dielectric elastomers with good mechanical stretchability and high dielectric constant are under high demand. However, the current strategy for fabricating these materials suffers from high cost or low thermal stability, which greatly hinders large-scale industrial production. Herein, we have successfully developed a novel strategy for improving the dielectric constant of polymeric elastomers via deep eutectic solvent inclusion by taking advantage of the low cost, convenient and environmentally benign synthesis process and high ionic conductivity from deep eutectic solvents. The as-prepared composite elastomers showed good stretchability and a greatly enhanced dielectric constant with a negligible increase in dielectric dissipation. Moreover, we have proven the universality of our strategy by using different types of deep eutectic solvents. It is believed that low-cost, easy-synthesis and environmentally friendly deep eutectic solvents including composite elastomers are highly suitable for large-scale industrial production and can greatly broaden the application fields of dielectric elastomers.

Keywords： composite materials     deep eutectic solvent     dielectric elastomer     high dielectric constant    

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Supramolecular self-assembly of two-component systems comprising aromatic amides/Schiff base and tartaric acid

Xin Wang, Wei Cui, Bin Li, Xiaojie Zhang, Yongxin Zhang, Yaodong Huang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 1112-1121 doi: 10.1007/s11705-019-1865-5

Abstract: The gelating properties and thermotropic behaviors of stoichiometric mixtures of aromatic amides , and the aromatic Schiff base with tartaric acid (TA) were investigated. Among the three gelators, -TA exhibited superior gelating ability. Mixture -TA exhibits a smectic B phase and an unidentified smectic mesophase during both heating and cooling runs. The results of Fourier transform infrared spectroscopy and X-ray diffraction revealed the existence of hydrogen bonding and - interactions in -TA systems, which are likely to be the dominant driving forces for the supramolecular self-assembly. Additionally, it was established that all of the studied gel self-assemblies and mesophases possess a lamellar structure. The anion response ability of the tetrahydrofuran gel of -TA was evaluated and it was found that it was responsive to the stimuli of F , Cl , Br , I , AcO .

Keywords： supramolecular self-assembly     organogel     liquid crystal     tartaric acid     hydrogen bond    

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Novel casting processes for single-crystal turbine blades of superalloys

Dexin MA

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 3-16 doi: 10.1007/s11465-018-0475-0

Abstract:

This paper presents a brief review of the current casting techniques for single-crystal (SC) blades

Keywords： superalloy     investment casting     Bridgman process     directional solidification     single crystal     turbine blade    

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Polymorphism and crystal transformation of penicillin sulfoxide

Dingding JING, Yongli WANG, Zhijian CHEN, Lina ZHOU, Jingkang WANG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 442-447 doi: 10.1007/s11705-011-1140-x

Abstract: In this contribution, two crystal structures of penicillin sulfoxide (forms I and II) were determinedthat penicillin sulfoxide is more stable as form I, and the temperature plays an important role in the crystal

Keywords： penicillin sulfoxide     crystallization     polymorphism     crystal transformation     Raman spectroscopy    

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Biosorption and biotransformation of crystal violet by

Tao PAN, Suizhou REN, Jun GUO, Meiying XU, Guoping SUN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2,   Pages 185-190 doi: 10.1007/s11783-012-0435-6

Abstract: As a common triphenylmethane dye, crystal violet (CV) was chosen to test the decolorization characteristicsHigh Performance Liquid Chromatography (HPLC) analysis of the dichloromethane extract of the supernatant

Keywords： crystal violet     decolorization     biosorption     biotransformation     Aeromonas hydrophila DN322p    

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Title Author Date Type Operation

Ionic Elastomers for Electric Actuators and Sensors

Chenrun Feng, C.P. Hemantha Rajapaksha, Antal Jákli

Journal Article

Dynamic modulation performance of ferroelectric liquid crystal polarization rotators and Mueller matrix

Song ZHANG, Lelun WANG, Anze YI, Honggang GU, Xiuguo CHEN, Hao JIANG, Shiyuan LIU

Journal Article

Effect of polymer structures on electro-optical properties of polymer stabilized liquid crystal films

WANG Shoulian, HE Jie, ZENG Yu, YAN Bin, WANG Yinghan

Journal Article

Room temperature liquid metal: its melting point, dominating mechanism and applications

Junheng FU, Chenglin ZHANG, Tianying LIU, Jing LIU

Journal Article

High-Efficiency Circularly Polarized Phased Array Based on 5 μm-Thick Nematic Liquid Crystals: Design

Xin Yu Wu,Fengshuo Wan,Hongyuan Feng,Shichao Jin,Chong Guo,Yu Wei,Dunge Liu,Yuqian Yang,Longzhu Cai,Zhi Hao Jiang,Wei Hong

Journal Article

Research progress on ultra-precision machining technologies for soft-brittle crystal materials

Hang GAO,Xu WANG,Dongming GUO,Yuchuan CHEN

Journal Article

High-Temperature Target Recognition Based on Spectral Radiation Information

Fan Xueliang,Cheng Xiaofang,Xu Jun

Journal Article

Crystal-to-crystal transformation from the triclinic to the cubic crystal system by partial desolvation

Qianqian Guo, Irmgard Kalf, Ulli Englert

Journal Article

Effect of hierarchical ZSM-5 zeolite crystal size on diffusion and catalytic performance of n-heptane

Shuman Xu, Xiaoxiao Zhang, Dangguo Cheng, Fengqiu Chen, Xiaohong Ren

Journal Article

Theoretical insights into influence of additives on sulfamethoxazole crystal growth kinetics and mechanisms

Journal Article

Deep eutectic solvent inclusions for high- composite dielectric elastomers

Journal Article

Supramolecular self-assembly of two-component systems comprising aromatic amides/Schiff base and tartaric acid

Xin Wang, Wei Cui, Bin Li, Xiaojie Zhang, Yongxin Zhang, Yaodong Huang

Journal Article

Novel casting processes for single-crystal turbine blades of superalloys

Dexin MA

Journal Article

Polymorphism and crystal transformation of penicillin sulfoxide

Dingding JING, Yongli WANG, Zhijian CHEN, Lina ZHOU, Jingkang WANG

Journal Article

Biosorption and biotransformation of crystal violet by

Tao PAN, Suizhou REN, Jun GUO, Meiying XU, Guoping SUN

Journal Article