ADVANCED FUNCTIONAL MATERIALS
·
2017
·Vol. 27
·期 43
·1702825
·
IF 12.124
Ke Chen,Qianqian Fu,Siyun Ye,Jianping Ge
Efficient and large scale printing of photonic crystal patterns with multicolor, multigrayscale, and fine resolution is highly desired due to its application in smart prints, sensors, and photonic devices. Here, an electric-field-assisted multicolor printing is reported based on electrically responsive and photocurable colloidal photonic crystal, which is prepared by supersaturation-induced self-assembly of SiO 2 particles in the mixture of propylene carbonate (PC) and trimethylolpropane ethoxylate triacrylate (ETPTA). This colloidal crystal suspension, named as E-ink, has tunable structural color, controllable grayscale, and instantly fixable characteristics at the same time because the SiO 2 /ETPTA-PC photonic crystal has metastable and reversible assembly as well as polymerizable features. Lithographical printing with photomask and maskless pixel printing techniques are developed respectively to efficiently prepare multicolor and high-resolution photonic patterns using a single-component E-ink.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Zezhen Zhang,Zekun Zhou,Shuman Feng,Lili Wu,Shanjun Gao
Membrane-based separation technologies often face a trade-off between selectivity and permeability, which represents a significant technical challenge in current research. In this study, vacuum-assisted surface deposition technology was utilized to co -deposit piperazine (PIP) and MXene onto a polyvinylidene fluoride (PVDF) microfiltration membrane. This was followed by interfacial polymerization, initiated by trimesoyl chloride (TMC), to form a polyamide (PA) network, resulting in the fabrication of a conductive thin-film nanocomposite membrane (CTFN-2). The results showed that the CTFN-2 membrane had a uniform PIP-TMC/MXene coating with a distinctive wrinkled structure on its surface, contributing to its high permeate flux and solute rejection. The membrane's separation performance was evaluated using a custom-built low-pressure cross-flow conductive membrane setup. The CTFN-2 membrane selectively rejected various ionic dyes under both positive and negative voltages, with an increased rejection rate for inorganic salts as the voltage rose. Notably, after being stored in deionized water for 180 days, the CTFN-2 membrane maintained stable dye separation performance. This research offers a novel approach for developing efficient and controllable separation membrane materials.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Dong Wang,Jingfang Li,Xiaohui Sun,Jianghua Hu,Xueqiang Tan,Qi Jia,Jun Liu,Xuyang Zhang,Guohua Wu,Xiangwei Wang
Electric field responsive photonic crystals take on critical significance in developing adaptive camouflage technology, which are promising materials for adaptive camouflage devices with better fabrication processes and color saturation. However, electric field responsive photonic crystals are primarily susceptible to poor fusion with typical background colors and necessitate the continuous implementation of electric fields to attain specific colors, thus limiting their practical applications. Monodisperse polyvinylpyrrolidone modified cadmium sulfide (PVP/CdS) microspheres with large refractive index are well prepared in this study. Liquid photonic crystals, exhibiting earth-yellow and light green under specific electric field, are obtained with PVP/CdS particles dispersed in propylene carbonate in accordance with the subtractive color mixing principle of structural color and initial color. The resulting electric field responsive photonic crystals are characterized by a simple preparation process, fast electrical response, long-time holding of the earth-yellow state, and reversible color changes between earth-yellow and light green in −3.5 V and + 3.5 V electric field switching. This study can contribute to the development of color-changing devices designed for adaptive camouflage applications.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 49
·31959-31965
·
IF 4.036
Chunde Li,Hua Wei,Xueyan Hu,Zhaoxian Chen,Xin Xie,Guo Chen,Anping Liu,Yingzhou Huang,Weijia Wen
Electrorheological (ER) fluid, containing polarized particles within an insulating liquid, represents a smart material, the mechanical properties of which can be altered mainly by an electric field. In this work, ER fluids based on cauliflower iron(II) oxalate doped titanium particles show excellent rheological and wetting properties by the sample co-precipitation method. The morphology of the particles is observed by SEM and the molecular structure within the particles is obtained via XRD and FTIR. The distribution of elements within the particles is obtained by EDS. Owing to a lower current density than pure iron(II) oxalate, the SEM and optical images show an obvious chain-like structure within the ER fluids with 2 wt% and 5 wt%, respectively, under 2 kV mm−1. Then, the rheological properties of these ER fluids are tested up to 3 kV mm−1 and the results show a gratifying property of resisting shear with different shear rates (0.1–100 s−1), which is attributed to the appearance of a stable chain-like structure. At the same time, the ER efficiency and the switching performance are obtained and the static yield stress fits the relevant electric field strength well. Ultimately, an excellent sedimentation ratio is obtained from 0 h to 600 h.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Dan Qu,Peijun Zhang,Jiaolong Liu,Yan Xu,Eyal Zussman,Bing Wei
Lyotropic chiral nematic cellulose nanocrystals (CNCs) have attracted significant attention and great progress has been made. Investigating their physical parameters, especially the twist elastic constant ( K 22 ), is pivotal for advancing our comprehension of fundamental viscoelastic property of chiral nematic phase. In this study, we demonstrate a straightforward method to simultaneously estimate K 22 and helical twisting power ( K t ) of chiral nematic CNCs. This method involves analyzing rheology properties and electro-response of CNCs, focusing on the rotational dynamics and structural reconfiguration of CNC tactoids under an electric field. By examining the rotation dynamics of CNC tactoids under an electric field, together with the viscosity characterization, the anisotropic dielectric susceptibility (∆χ) of chiral nematic CNC along the helix axis was determined. Subsequently, K 22 / ∆χ n was extracted by analyzing CNC tactoid pitch evolution under an electric field, employing the de Gennes model. The K 22 for different concentrated CNCs is finally estimated by integrating experimental results and theory. It is shown that the chiral nematic CNCs present concentration-dependent K 22 , ranging from 0.05 to 0.14 pN, while K t spans from 0.06 to 0.14 pN/μm. This study offers a comprehensive understanding of the CNC fundamental viscoelastic property and opens up new avenues for K 22 measurement in other lyotropic liquid crystals.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
PubMed
高影响因子
RSC Advances
·
2014
·Vol. 5
·期 9
·6489-6493
·
IF 3.708
Xuanxuan Qiao,Yuxia Luo,Aihua Sun,Chongyang Wang,Jianfei Zhang,Chengyi Chu,Jianjun Guo,Gaojie Xu
Surface modified colloidal SiO2@TiO2 core–shell particles were chosen to study their responsive photonic properties and the effect of surface on structural colour under low electric field. The surface of SiO2@TiO2 core–shell particles was controllably coated by PDDA, PVA and SiO2. A corresponding colloidal suspension of the modified SiO2@TiO2 showed completely different reflection spectra. The dielectric spectrum was employed to explain the effect of surface properties on the assembly.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Huishuang Yin,Peiqin Song,Chunhui Zhou,Huihua Huang
This study focused on synthesis of innovative hydrogels with electric field response from modified pineapple peel cellulose and hericium erinaceus chitosan and gelatin based on Schiff base reaction. A series of hydrogels were prepared by oxidized hydroxyethyl cellulose , gelatin and chitosan at different deacetylation degree via mild Schiff base reaction. Subsequently experiments towards the characterization of oxidized hydroxyethyl cellulose/gelatin/chitosan (OHGCS) hydrogel polymers were carried out by FTIR/XRD/XPS, swelling performances and electric response properties. The prepared hydrogels exhibited stable and reversible bending behaviors under repeated on–off switching of electric fields, affected by ionic strength , electric voltage and pH changes. The swelling ratio of OHGCS hydrogels was found reduced as deacetylation degree increasing and reached the maximum ratio ∼ 2250 % for OHGCS-1. In vitro drug releasing study showed the both curcumin loading capacity and release amount of Cur-OHGCS hydrogels arrived about 90 % during 6 h. Antioxidation assessments showed that the curcumin-loaded hydrogels had good antioxidation activities, in which, 10 mg Cur-OHGCS-1 hydrogel could reach to the maximum of about 90 % DPPH scavenging ratio. These results indicate the OHGCS hydrogels have potentials in sensor and drug delivery system .
研究领域:
材料科学
·
生物医学工程
·
药剂学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Houlong Yang,Wentian Zhang,Haiguang Zhang,Qian Tan,Xinran Zhang,Xin Yang,Fangang Meng,Shanshan Zhao
Nanofiltration (NF) has significant potential for water reclamation, but it encounters several critical challenges, including unsatisfactory removals of dissolved small-molecular contaminants such as antibiotics, an inherent permeability-selectivity trade-off, and severe membrane fouling. Herein, we present a groundbreaking advancement in addressing these issues through an electric field-assisted filtration with a conductive NF membrane fabricated by interfacial polymerization of polyamide on a carbon nanotube substrate (pCNT-PA). The effects of electric field strength, solution pH, ionic strength, and combined organic-inorganic foulants on the removal efficiencies of various antibiotics of the conductive NF membrane under electric field-assisted filtration were investigated. The results show that, when the conductive membrane was used as a cathode under an applied voltage of 1.5 V, the rejection rates of sulfamethoxazole and ibuprofen substantially increased from 79.3 % and 59.3 % to 99.5 % and 90.8 %, respectively. This improvement is primarily attributed to the electric field induced increase in membrane charge density, rather than the alteration of membrane pore size. The elevated charge density enhances the electrostatic repulsion between anionic antibiotics and negatively polarized membrane. Based on this mechanism, the pCNT-PA membrane presented voltage-gated separation towards binary and ternary antibiotics with distinct charge characteristics. Furthermore, the electric field-assisted NF process exhibited remarkable antifouling performance, maintaining over 95 % sulfamethoxazole removal efficiency in the presence of combined organic-inorganic foulants. This work advances the understanding of electric field-regulated antibiotic removal mechanisms in NF systems, providing new theoretical insights for the development of intelligent responsive membrane separation technologies.
研究领域:
环境科学
·
膜分离技术
·
水处理工程
·
材料科学
·
物理化学
·
环境功能材料
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yan Li,Jinrong Li,Qiuya Zhang,Ke Li,Yuliang Li,Chunyu Zhang,Xiaofang Zhang,Long Li,Dongliang Tian
Intelligent manipulation of fluid has aroused broad interest in the applications of freshwater harvesting, microfluidics, and energy. Despite much progress in this field, significant challenges persist in precisely controlling droplets intelligent driving and selection. Herein, inspired by shorebird beak and Nepenthes’ leaf edge, an electric-field-adaptive wrinkled surface (EFAWS) is developed for droplet driving and screening. Wrinkle geometry and lubricant thickness can dynamically regulate through electric field, enabling control trajectory and velocity by programming radial wrinkles and lubricant thickness, EFAWS achieves directional droplet transport and droplet volume-selective sorting. Theoretical models reveal relationships between surface deformation and wetting dynamics, demonstrating size-dependent directional responses governed by lubricant thickness. Volume-specific transport pathways emerge from the capillary forces generated by wrinkles, allowing intelligent screening of microdroplets. EFAWS establishes structure-field-property correlations for designing smart interfaces, with potential applications in microreactors, water harvesting and intelligent fluidic devices with multi-parameter control capabilities.
研究领域:
表面科学
·
微流控技术
·
仿生学
·
流体力学
·
功能材料
·
智能器件
·
界面化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Xuanjun Li,Xiaojing Su,Junping Liao,Pingping Deng,Zeyuan Lu,Shengye Chen,Kunquan Li,Hongqiang Li,Wenjian Wu
pH-Responsive superwetting materials have found increasingly extensive applications in oil-water separation. To broaden the response range of such materials, researchers have proposed dual pH-responsive materials for this application. While these materials exhibit wettability transitions under both acidic and alkaline conditions, they are still limited by poor recovery of superhydrophobicity. To address this limitation, a conductive superhydrophobic fabric with alkaline-responsive properties was fabricated by introducing silver nanowires onto the textile substrate followed by grafting hydrophobic and pH-responsive functional chemicals. The CG/Ag-S fabric exhibited excellent superhydrophobicity (water contact angle at 153.7°), and presented dual-induced pH response to both alkaline conditions and electric field. Notably, the fabric maintained its superhydrophobicity and stable responsiveness after 13 response cycles, with alkaline droplets (pH at 13) fully permeating through it within 30 s. Additionally, electrolysis-induced surface alkalization enabled water to wet and permeate through the fabric within 60 s for effective light oil-water separation. In oil-water separation tests, the CG/Ag-S fabric achieved a separation efficiency of 95.4 % for heavy oil-water mixtures with a flux of 1.68 × 10 4 L·m −2 ·h −1 before pH response, and a separation efficiency of 97.8 % for light oil-water mixtures with a flux of 1.72 × 10 4 L·m −2 ·h −1 after pH response. The design of dual-induced pH-mono-responsiveness solves the superwettability recovery challenge of pH-dual-responsiveness materials, and the dual-induced response capability also broadens the response range of pH-responsive materials.
研究领域:
材料科学
·
化学工程
·
环境科学
·
表面工程
·
智能材料
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）