FOOD HYDROCOLLOIDS
·
2022
·
IF 11.504
Gao-Shang Wang,Hong-Yu Chen,Li-Juan Wang,Yuan Zou,Zhi-Li Wan,Xiao-Quan Yang
Edible oleogels have gained popularity as an approach for formulating food products, profiting from improving nutritional profiles related to health-related concerns, and playing an essential role in food processing. Protein oleogels provide an additional opportunity to load and deliver a high proportion of natural macronutrient in lipid-based food products. However, structuring oleogels with proteins directly were rarely reported, which has greatly limited their practical applications. Herein, we proposed a simple and robust method for structuring protein oleogels. By taking advantage of the improved interparticle cohesion through adding a much small amount of water (e.g., 2%) dispersed by ball milling, a space-spanning fractal network of engineered colloidal protein nanoparticles was formed, allowing for physically trapping the liquid oil into a self-standing gel-like system. Rheology and confocal laser microscopy imaging were adopted to investigate the viscoelasticity and microstructure of the resulting oleogels, showing that these capillary protein oleogels can be designed and fabricated with tunable properties upon water addition. Meanwhile, protein oleogels can be successfully formed by this approach, varying from proteins with different wettability, as well as oils differing in polarity. Overall, our findings raise the possibility of structuring protein oleogels with high operability and easy scale-up in practical applications.
研究领域:
食品科学
·
生物物理学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2023
·
IF 5
Jianing Lv,Anying Wang,Yinwen Li,Shoufang Xu,Xingjian Li
Beyond self-repairability and reprocessability, permanent shape reconfigurability in thermadapt shape memory polymers (TSMPs) is a prominent functionality in dynamic covalent polymer networks. The design and synthesis of TSMPs with a wide range of tunable macroscopic properties that do not require sophisticated chemistry or modification are highly desirable for real-world device applications but are a significant challenge. Herein, we present a straightforward yet efficient strategy to prepare TSMPs with adjustable properties, good reconfigurability, and self-repairability via ester–ester exchange. The class of TSMPs is engineered as the architecture of AB copolymer networks (AB-CPNs), which are composed of the semicrystalline polycaprolactone (PCL) as the A-segment and the poly(butyl acrylate) (PBA) as the B-segment. Regulating the weight content of the PCL segment in the thermadapt shape memory PCL-co-PBA networks can govern the network rearrangement kinetics, thermal properties, thermomechanical properties, switching temperature, and shape memory properties. The thermadapt shape memory AB-CPNs with ester–ester exchange do not require the introduction of extra hydroxyl groups, and their network structure is readily adjusted, allowing for considerable flexibility in the structure design and property adjustment. It is anticipated that a large family of thermadapt shape memory AB-CPNs with widely tunable macroscopic properties and the commercial availability of precursors will contribute significantly to real-world applications of SMP devices.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Xiaodong Zhang,Xuyi Wang,Kun Nie,Ziyao Hu,Xiuqiang Duan,Ranran Zhou,Luoxin Wang,Lefu Mei,Hua Wang,Xiaoxue Ma
Hydroxyapatite (HAP) commonly undergoes doping with various dopants , leading to the emergence of new properties. In this study, HAP is co-doped by terbium (Tb) and europium (Eu) to impart HAP with photoluminescent properties. By controlling the Tb 3+ amount to 7.5 × 10 −5 mol unchanged, it is observed that when the doping amount of Eu 3+ reaches 4.0 × 10 −5 mol, the band gap measures 3.919 eV, with maximum fluorescence intensity. Notably, a dipole-dipole energy transfer type from Tb 3+ to Eu 3 was identified during this process. Concentration quenching occurs when the Eu 3+ amount exceeds 4.0 × 10 −5 mol. In addition, the Tb 3+ and Eu 3+ co-doped HAP demonstrates excellent thermal stability and a more comprehensive emission wavelength range than Tb 3+ -doped HAP or Eu 3+ -doped HAP. Considering these properties, Tb 3+ and Eu 3+ co-doped HAP phosphor and aramid/polyphenylene sulfide (ACFs/PPS) fiber paper are organically compounded, resulting in functional fabrics with excellent low-temperature stability. These available fabrics are made of luminescent crystals and fibers can be applied in fields such as high-performance textile testing. Notably, when a specific laser irradiates the damaged area of the textile, fluorescence is not detected by the detector. Moreover, Tb 3+ and Eu 3+ co-doped HAP has also been shown to be used in the light-emitting diode (LED) to produce the HAP-LED that emits warm white light without commercial phosphors. That expands the application of HAP in anti-counterfeiting, flexible wearables, high-performance textile testing, and semiconductor devices.
研究领域:
材料科学
·
生物医学工程
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2024
·Vol. 16
·期 11
·1568
·
IF 4.7
Yinbiao Shi,Xiaojia Su,Xiaoyan Wang,Mingye Ding
Inorganic CsPbX3(X = Cl, Br, I) perovskite quantum dots (PQDs) have attracted widespread attention due to their excellent optical properties and extensive application prospects. However, their inherent structural instability significantly hinders their practical application despite their outstanding optical performance. To enhance stability, an in situ electrospinning strategy was used to synthesize CsPbX3/polyacrylonitrile composite nanofibers. By optimizing process parameters (e.g., halide ratio, electrospinning voltage, and heat treatment temperature), all-inorganic CsPbX3PQDs have been successfully grown in a polyacrylonitrile (PAN) matrix. During the electrospinning process, the rapid solidification of electrospun fibers not only effectively constrained the formation of large-sized PQDs but also provided effective physical protection for PQDs, resulting in the improvement in the water stability of PQDs by minimizing external environmental interference. Even after storage in water for over 100 days, the PQDs maintained approximately 93.5% of their photoluminescence intensity. Through the adjustment of halogen elements, the as-obtained composite nanofibers exhibited color-tunable luminescence in the visible light region, and based on this, a series of multicolor anti-counterfeiting patterns were fabricated. Additionally, benefiting from the excellent water stability and optical performance, the CsPbBr3/PAN composite film was combined with red-emitting K2SiF6:Mn4+(KSF) on a blue LED (460 nm), producing a stable and efficient WLED device with a color temperature of around 6000 K and CIE coordinates of (0.318, 0.322). These results provide a general approach to synthesizing PQDs/polymer nanocomposites with excellent water stability and multicolor emission, thereby promoting their practical applications in multifunctional optoelectronic devices and advanced anti-counterfeiting.
研究领域:
材料科学
·
光学工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials
·
2025
·Vol. 18
·期 9
·1927
·
IF 3.2
Jinying Zhang,Yexiaotong Zhang,Zhongwei Gao,Jiaxing Yang,Xinye Wang
The realization of broad-wavelength tunability of the structural color in Double layered Cholesteric Liquid Crystal Elastomers (DCLCEs), along with good flexibility and processability, presents a significant challenge. This research introduces a facile and effective fabrication technique, Solvent Evaporation-Induced Self-Assembly (SEISA), for the production of DCLCEs exhibiting broad wavelength tunability, superior flexibility, and robust mechanical characteristics. Focusing on initial color tuning, bubble defect minimization, UV photopolymerization, and coating procedures, this research systematically optimizes the fabrication process through experimental investigation of factors like chiral dopant amount, temperature, UV exposure duration, coating thickness, and speed. The method enabled the successful fabrication of DCLCEs with uniform and controllable coloration, demonstrating the effectiveness of this controlled synthesis approach in significantly enhancing structural color features. Upon stretching to 2.8 times its original length, the center wavelength shifted from 613 nm to 404 nm, yielding a tunable bandwidth of up to 209 nm across the visible spectrum.
研究领域:
材料科学
·
光学材料
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES COMMUNICATIONS
·
2024
·
IF 6.5
Arif Hussain,Liu Jie,Can Zhao,Junyi Yu,Asad Muhammad Khan,Suibin Luo,Shuhui Yu
Polymer-based flexible materials can be slated as successors of conventional inorganic ferroelectrics to induce tunable dielectric properties in microwave devices because of their advantageous characteristics, such as lightweight, flexibility, easy processibility, and eco-friendliness. Ferroelectric polymers require a high external field to induce dielectric tunability, which can be a problem. Another problem is the dielectric mismatch and incompatibility between ceramic and polymer, which hinders the ceramic-polymer composites to induce tunable dielectric properties. Herin, titanium oxide-barium strontium titanate (TO@BST) core-shell nanoparticle are reinforced into the poly (vinylidene fluoride) (PVDF) matrix to fabricate flexible nanocomposite with tunable dielectric properties. The core-shell nanoparticle-based nanocomposite produced low voltage dielectric tunability (12.03 % at 33 kV/mm) and excellent tunable dielectric efficiency ( T uE , 0.8 %) while maintaining low dielectric loss (tanδ, 0.024). Moreover, TO@BST-based nanocomposite exhibited a remarkable 91 % improvement in dielectric constant compared to pure PVDF and a 25.7 % improvement compared to BST-based nanocomposite. The dielectric breakdown strength ( E b ) of the nanocomposite filled with 40 wt% TO@BST nanoparticle improved by 45 % (114.36 kV/mm) compared to pure BST-based nanocomposite (78.68 kV/mm). This work provides valuable insights into designing novel flexible nanocomposites with low voltage tunability and high breakdown strength at high filler loading.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2023
·
IF 5
Xiaojian Jiang,Hao Yu,Haohao Lu,Yinsong Si,Yubing Dong,Yaofeng Zhu,Chen Qian,Yaqin Fu
Smart electromagnetic interference (EMI) shielding materials that enable dynamical adjustment of electromagnetic wave transmission are highly desirable for various applications. Nevertheless, ordinary materials show nonadjustable EMI shielding performance after deployment. Herein, an anisotropic smart EMI shielding composite is presented, which shows tunable EMI shielding effectiveness by rotation, shape memory, and simple stacking. The composite possesses a sandwich structure consisting of two graphene fibrous films (GFFs) with intermediate shape memory poly(ethylene-co-vinyl acetate) (EVA). Owing to the aligned graphene fibers of GFF, the GFF/EVA composite showed anisotropic mechanical property, shape memory property, and shielding effectiveness. The composite shows high tensile strength but declined shape memory property in the axial direction (0°) of the graphene fibers. In the 0° direction of the GFF/EVA composite, a total shielding effectiveness (SET) of >40.8 dB in the X-band is observed, which is much higher than that in the 90° direction (vertical, <8.1 dB). The rotation-modulated EMI shielding of GFF/EVA is achieved by the anisotropy-dependent EMI shielding performance. Moreover, tunable EMI shielding is demonstrated through the shape memory process of the composite and the average SET can be adjusted in the range from 43.2 to 33.1 dB by fixing a tensile strain from 0 to 100%. Furthermore, the EMI shielding of the multilayered composite can be modulated by stacking individual GFF/EVA composites at different angles. The smart GFF/EVA composite with tunable and function-switchable features is demonstrated, which will contribute to the development of smart EMI shielding materials and devices for electromagnetic applications in various fields.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Ying Li,Jiyou Zhong
Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) embedded in portable smart devices emerge as a new generation of NIR light sources for multifunctional applications. However, developing a NIR phosphor with ultrahigh efficiency, robust thermal stability, and wide-range spectral tunability remains a great challenge. Herein, a series of garnet-type Ca2GdMAMBGe3O12:Cr3+ (MA = Zn, Mg; MB = Sc, In) phosphors were designed and synthesized. Among them, the Ca2GdZnScGe3O12:Cr3+ phosphor was screened with a superior performance. Upon 465 nm excitation, this material exhibits a broadband emission with a peak centered at 795 nm and a near-unity internal quantum efficiency (IQE = 97%). The integrated emission intensity at 423 K can retain 83.4% of that at room temperature. Moreover, the emission peak can be tuned from 795 to 870 nm via varying the ratio of the [Na+–Gd3+] unit cosubstituting the [Ca2+–Ca2+] unit, and the IQE still maintains over 90% when the emission peak gradually shifts to 830 nm. Finally, the applications of the developed materials in nondestructive testing, information encryption, and organic matter analysis were demonstrated, which confirmed the feasibility of these materials in multifunctional spectroscopy applications.
研究领域:
材料科学
·
光学工程
·
生物医学工程
·
分析化学
·
光电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Xue Ren,Zhe-Yong Chen,Hui-Ling Hu,Yi Liu,Feng-Lei Jiang
Due to their tunable bandgaps, mixed-halide perovskites (MHPs), such as CsPbBrxI3–x (0 < x < 1), have excellent prospects for tandem solar cells and wavelength-tunable light-emitting diodes (LEDs). Yet MHPs experience light-induced halide phase segregation (LIHPS) when exposed to light or an electric field, and the origin of this is still under debate. In this work, it was discovered that local electric fields caused by vacancy defects stimulated ion migration under the synergistic influence of strain. These findings were based on the observation that tetrabutylammonium bromide (TBAB) considerably suppresses LIHPS. The significance of minimizing surface defects by ligand passivation was emphasized so as to suppress LIHPS. In years to come, it is anticipated to attain stable mixed-halide perovskites with bandgap tunability under electrical bias or light-induced conditions, which is essential for applications including tandem solar cells and wavelength-tunable LEDs.
研究领域:
材料科学
·
光电子学
✓ 已验证
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-13
·
IF 16.6
Xie Xinjian,Xu Zhonggang,Yu Xin,Jiang Hong,Li Hongjiao,Feng Wenqian
Conductive hydrogels require tunable mechanical properties, high conductivity and complicated 3D structures for advanced functionality in (bio)applications. Here, we report a straightforward strategy to construct 3D conductive hydrogels by programable printing of aqueous inks rich in poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) inside of oil. In this liquid-in-liquid printing method, assemblies of PEDOT:PSS colloidal particles originating from the aqueous phase and polydimethylsiloxane surfactants from the other form an elastic film at the liquid-liquid interface, allowing trapping of the hydrogel precursor inks in the designed 3D nonequilibrium shapes for subsequent gelation and/or chemical cross-linking. Conductivities up to 301 S m −1 are achieved for a low PEDOT:PSS content of 9 mg mL −1 in two interpenetrating hydrogel networks. The effortless printability enables us to tune the hydrogels’ components and mechanical properties, thus facilitating the use of these conductive hydrogels as electromicrofluidic devices and to customize near-field communication (NFC) implantable biochips in the future.
研究领域:
材料科学
·
生物医学工程
·
纳米技术
·
电气工程
✓ 已验证
DOI
PubMed
高影响因子
Advanced Materials Technologies
·
2020
·Vol. 5
·期 2
·1900925
·
IF 5.969
Chengsheng Luo,Bin Tian,Qun Liu,Yu Feng,Wei Wu
Wearable strain sensors have attracted a lot of interests due to their unlimited prospects in applications such as human motion detections, electronic skin, and human–computer interactions. However, the complex manufacturing methods are generally used to fabricate the strain sensors with wide sensing ranges and high sensitivity. Herein, a high-performance textile-based strain sensor (TSS) is fabricated by one-step screen-printing method via transferring the silver nanowires ink onto a stretchable textile. Through designing the screen plate with various patterns, the optimized TSSs with different sensing ranges and sensitivity can be achieved simultaneously. Among them, a straight line-structural TSS (with a width of 2 mm) exhibits a wide workable strain range of 120%, high gauge factor of 216, and superior durability (more than 2000 stretching/releasing cycles). As flexible wearable devices, these TSSs are used to monitor human joint motion, prefiguring the various applications in human health detection, soft robots, intelligent devices, etc.
研究领域:
材料科学
·
柔性电子
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2025
·
IF 5.1
Zhiyong Zeng,Jv Li,Chuanru Zheng,Hong-Mei Chen,Gang Liu,Jian Huang,Kun Qian,Fenghua Zhang,Wenbing Li
The application of shape memory smart materials in the field of electromagnetic interference (EMI) shielding can compensate for their poor adaptability and promote the development of electromagnetic shielding composite materials towards multi-functionality and intelligence. Herein, an intelligent poly(ethylene-co-vinyl acetate)/polydopamine/MXene (EVA/PDA/MXene) composite membrane with tunable electromagnetic shielding capability over a wide range was prepared using electrospinning and dip-coating techniques. Firstly, electrospinning technology was used to prepare highly cross-linked EVA fiber membranes. Secondly, the surface of these membranes was modified with dopamine. And finally, dip-deposition technology was employed to tightly attach MXene nanosheets to the surface of the modified membranes. The electromagnetic shielding effectiveness of the EVA/PDA/MXene-30-6 composite membrane in the X-band (8.2-12.4 GHz) is up to 74.7 dB, and both the shape fixation rate (Rf) and shape recovery rate (Rr) are above 90%. Most importantly, it achieves a reversible tuning of shielding effectiveness from 26.2 dB to 74.7 dB under a tensile strain of 0-30%. Furthermore, the electromagnetic shielding effectiveness of the composite membrane remains virtually unchanged after undergoing continuous bending and folding, and its surface temperature can reach 93.2 °C when subjected to a voltage of 2.5 V, thereby demonstrating exceptional electro-thermal conversion capability. This multifunctional composite membrane, characterized by its adaptability, provides a direction for the development of electromagnetic shielding composites.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）