Advanced Materials Interfaces
·
2020
·Vol. 7
·期 10
·1902190
·
IF 4.948
Jianda Lin,Xiangbin Yin,Hao Pang,Lei Zhang,Bing Liao,Mingliang Xin,Yu Su,Yang Liu,Lian Wu,Kangle Jia,Benbin Zhong,Yuliang Mai,Yongqiang Dai
Due to the high in-plane Young's modulus and defects, graphene is prone to deformations such as wrinkles. The effects of wrinkles on the mass and electron transport properties need to be elucidated as graphene has great potential in applications such as catalysis, sensors, energy storage, and conversion. In this paper, the wrinkling of graphene oxide sheets is dominated by the mass ratio of graphene oxide to N , N ′-dicyclohexylcarbodiimide (DCC) to fabricate 3D graphene architectures (TDGAs) with tunable porosity. This template-free DCC tactic of regulating the wrinkling procedure forms hierarchical porosity and modulates the exposure of defect sites. Considering the confinement effect of the wrinkles and defect sites, orthorhombic phase Nb 2 O 5 ( T -Nb 2 O 5 ) nanoparticles are loaded onto TDGAs, and as-obtained T -Nb 2 O 5 @TDGAs composites exhibit favorable properties of Li-ion and electron transport after the wrinkle structures are optimized. The DCC tactic manifests excellent performance in manipulating mass transport properties through tuning the wrinkles on TDGAs-based composites, which may greatly contribute to graphene based materials with high performances in energy storage.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
National Science Review
·
2025
·
IF 17.1
Yang Qiucheng,Yang Jinlong,Hu Yuhao,Niu Xiaopeng,Liu Zhenda,Zou Jian,Guo Junchang,Xiong Hao,Gu Xingshi,Yang Li,Yu Fanfei,Zhu Shunpeng,Ye Ming,Yi Xian,Deng Xu
Fracture-based interfacial breakage has shown promise in efficiently removing ice accretion. Here, intrigued by the response of human skin to stress-induced deformation, we present a strategy to design tough-skin de-icing surfaces (TSDSs) that actively manipulate crack-induced ice-substrate interfacial breakage during ice removal. This design leverages the surface instability of thin films to generate extensive wrinkling at the ice-substrate interface, which serves as crack initiation sites. We demonstrate efficient ice shedding by creating wrinkles at two length scales, macro wrinkles for actively initiate the cracks at the rim of ice and micro wrinkles for further promoting stress concentration at the ice-substrate interface. The TSDS (τ < 10 kPa) displays excellent durability and weather resistance, achieving a large-area ice self-shedding effect solely through gravity. The universality of the proposed mechanism is verified on multiple materials and potential applications. This design concept offers valuable insights into creating durable de-icing materials with enhanced ice-shedding properties.
研究领域:
材料科学
·
生物仿生学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Liping Li,Wanhui Shi,Yang Yang,Yunzhen Chang,Ying Zhang,Shujie Liu,Sheng Zhu,Gaoyi Han
Soft self-healing materials are promising candidates for flexible electronic devices due to their exceptional compatibility, extensibility, and self-restorability. Generally, these materials suffer from low tensile strength and susceptibility to fracture because of the restricted microstructure design. Herein, we propose a hydrothermal-freeze-thaw method to construct high-strength self-healing hydrogels with even interconnected networks and distinctive wrinkled surfaces. The integration of the wrinkled outer surface with the three-dimensional internal network confers the self-healing hydrogel with enhanced mechanical strength. This hydrogel achieves a tensile strength of 223 kPa, a breaking elongation of 442%, an adhesion strength of 57.6 kPa, and an adhesion energy of 237.2 J m -2 . Meanwhile, the hydrogel demonstrates impressive self-repair capability (repair efficiency: 93%). Moreover, the density functional theory (DFT) calculations are used to substantiate the stable existence of hydrogen bonding between the PPPBG hydrogel and water molecules which ensures the durability of the PPPBG hydrogel for long-term application. The measurements demonstrate that this multifunctional hydrogel possesses the requisite sensitivity and durability to serve as a strain sensor, which monitors a spectrum of motion signals including subtle vocalizations, pronounced facial expressions, and limb articulations. This work presents a viable strategy for healthcare monitoring, soft robotics, and interactive electronic skins.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
高影响因子
Nanomaterials
·
2018
·Vol. 8
·期 6
·385
·
IF 3.504
Junkai Gao,Wenwen Tao,Dian Chen,Xiuwang Guo,Yan Chen,Yanjun Jiang
Nanoflower-like wrinkled mesoporous silica (NFMS) was prepared for further application as the carrier of polyethylene glycol (PEG) to fabricate the new, shape-stabilized phase change composites (PEG/NFMS); NFMS could improve the loading content of PEG in the PEG/NFMS. To investigate the properties of PEG/NFMS, characterization approaches, such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), thermal gravimetric analysis (TGA), Brunauer-Emmett-Teller (BET) analysis, and differential scanning calorimetry (DSC), were carried out. The characterization results illustrated that the PEG was completely adsorbed in the NFMS by physical adsorption, and the nanoflower-like wrinkled silica did not affect the crystal structure of PEG. As reported by the DSC test, although NFMS had a restriction influence on the activity of the PEG molecules, the melting and binding enthalpies of the PEG/NFMS could reach 136.6 J/g and 132.6 J/g, respectively. In addition, the TGA curves demonstrated that no evident weight loss was observed from 20 °C to 190 °C for the PEG/NFMS, and the results revealed that the PEG/NFMS had remarkable thermal stability. These results indicated that the NFMS is a potential carrier of organic phase change material for the preparation of shape-stabilized phase change composites.Keywords:phase change materials;wrinkled mesoporous silica;polyethylene glycol;thermal energy storage
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Fangya Qi,Yulu Tang,Chen Zhao,Zhaoqiang Zheng,Xiaoteng Jia,Yonggang Min
Two-dimensional transition-metal carbide (MXene) Ti3C2Tx possesses advantages of high conductivity and high volumetric capacitance, making it an ideal electrode material for high-performance supercapacitors. However, the high stiffness impedes its direct implementation in stretchable supercapacitors for integrated wearable electronics. Here, we demonstrate a stretchable supercapacitor based on Ti3C2Tx electrodes through a device-scaled controlled crumpling strategy. An ultrathin supercapacitor with a thickness of about 45 μm is assembled with gold foil gilded ultrathin preservative membrane as a current collector, drop cast Ti3C2Tx as an active material, and poly(vinyl alcohol)-H3PO4 as a polymer gel electrolyte. The ultrathin supercapacitor with optimized electrodes exhibits an areal specific capacitance of 10.2 mF cm–2 at 5 mV s–1 with excellent mechanical flexibility. The controlled adhesion of the ultrathin supercapacitor on a prestretched latex substrate and the elastic deformation of the substrate induce local displacements on the ultrathin supercapacitor to create periodic crumples. Stretching the crumpled supercapacitor only causes the amplitude and wavelength changes of the crumples, leading to a high level of stretchability (up to 100%). Also, the crumpled supercapacitor can sustain 1000 stretching cycles at a maximum strain of 100%. Moreover, it can provide sufficient power to drive α-In2Se3 nanoflake-based photodetector at 100% strain. This device-scaled controlled crumpling method provides a facile and effective way to design stretchable energy devices with high stretching durability for stretchable devices.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Fan Xie,Yafang Wang,Longhai Zhuo,Fengfeng Jia,Doudou Ning,Zhaoqing Lu
Benefiting from its superior thermal stability, polyimide (PI) fiber-based composites have attracted wide attention in the field of high-temperature filtration and separation. However, the trade-off between filtration efficiency and pressure drop of traditional PI filters with single morphology and structure still remains challenging. Herein, the electrospun PI high-temperature-resistant air filter was fabricated via thermal-induced phase separation (TIPS), employing polyacrylonitrile (PAN) as a template. The PI nanofibers exhibited special wrinkled porous structure, and the filter possessed a high specific surface area of 304.77 m2/g. The removal of PAN changed the chemical composition of the fiber and induced PI molecules to form complex folds on the surface of the fiber, thus forming the wrinkled porous structure. Additionally, the wrinkled porous PI nanofiber filter displayed a high PM0.3 removal efficiency of 99.99% with a low pressure drop of 43.35 Pa at room temperature, and the filtration efficiency was still over 97% after being used for long time. Moreover, the efficiency of the filter could even reach 95.55% at a high temperature of 280 °C. The excellent filtration performance was attributed to the special wrinkled porous surface, which could limit the Brownian motion of PMs and reinforce the mechanical interception effect to capture the particulate matters (PMs) on the surface of the filter. Therefore, this work provided a novel strategy for the fabrication of filters with special morphology to cope with increasingly serious air pollution in the industrial field.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Coatings
·
2022
·Vol. 12
·期 5
·608
·
IF 3.236
Bowen Wang,Juanjuan Wang,Xue Han,Conghua Lu
Here we report a simple micro/nano patterning strategy based on light-induced surface wrinkling. Namely, we fabricated a film/substrate system composed of polydimethylsiloxane (PDMS) as a soft substrate and non-photosensitive polymer polystyrene (PS) mixed with azo-polymer (polydisperse orange 3, PDO3) as a stiff film. Taking advantage of the photo-thermal effect and photo-softening effect of PDO3, we fabricated various microstructured wrinkling morphologies by a simple light illumination. We investigated the influence of two exposure modes (i.e., static selective exposure and dynamic moving exposure), the illumination conditions, the composition of the blended film, and the film thickness on the resulting wrinkling patterns. It is highly expected that this azo-based photosensitive wrinkling system will be extended to functional systems for the realization of light-induced surface micro/nanopatterning.Keywords:azopolymer;polystyrene;surface wrinkling;photoresponses;polydimethylsiloxane
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
Advanced Materials Interfaces
·
2018
·Vol. 5
·期 21
·1800905
·
IF 4.834
Jixun Xie,Juanjuan Wang,Jingxin Zhao,Chengfeng Yang,Lele Li,Conghua Lu
Patterning functional materials into well-defined microstructures has drawn increasing attention in material science, bioengineering, surface engineering, nanotechnology, and especially in device processing. Here, a simple versatile route is developed to fabricate hierarchical surface patterns on conducting polymer films in solution via a combination of surface wrinkling and ultrasonic cleaning. Heterogeneous surface architectures (e.g., wrinkles/delaminating buckles) are first obtained owing to in situ self-wrinkling during the solution-phase growth of polyaniline (PANI) film on a selectively oxygen plasma-exposed polydimethylsiloxane (PDMS) substrate. Subsequent ultrasonic cleaning is introduced to selectively remove the patterned PANI film that is deposited in the exposed PDMS region, based on the different adhesion strength of the patterned film with the exposed and unexposed PDMS regions. As a result, corresponding hierarchically patterned PANI films with controlled microstructures, spatial locations, and dimensions are obtained. Combined with the additional self-reinforcement effect by polymerization of polymerizable monomers into the patterned PANI film, well-defined stabilized patterns of PANI-based composite films are further fabricated, which have great potential for the applications in micro-supercapacitors and integrated pressure sensor arrays with excellent performances, as demonstrated here.
研究领域:
材料科学
·
纳米技术
·
生物工程
·
表面工程
·
器件加工
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Yue Yin,Mengqi Shi,Yi Ren,Shu Wang,Ming Hua,Junhe Lu,Weiming Zhang,Lu Lv
A novel multifunctional metal-organic frameworks (MOFs) UiO-66@Fe 3 O 4 @UiO-66 (UiO = University of Oslo) was fabricated to adsorb pharmaceuticals and personal care products (PPCPs) under near neutral conditions. We designed a wrinkle structure on the surface of UiO-66@Fe 3 O 4 @UiO-66 by seeded growth strategy. These wrinkles were composed of Fe 3 O 4 nanoparticles and outermost UiO-66. It made the specific surface area of the MOFs increases, and provided multiple active sites for a representative pollutant salicylic acid (SA) adsorption. Moreover, lattice defects formed during secondary growth facilitating the coordination interaction between SA and the secondary building unit of UiO-66@Fe 3 O 4 @UiO-66 under near neutral conditions. These advantages made the adsorption capacity of per unit mass UiO-66 in UiO-66@Fe 3 O 4 @UiO-66 about 42% higher than that of the pristine UiO-66, and the removal rate of 1 mg L −1 SA reach 64.5% in real wastewater. Furthermore, magnetic Fe 3 O 4 particles in the wrinkles exhibited outstanding magnetic separation performance. So that UiO-66@Fe 3 O 4 @UiO-66 can be effectively separated from the liquid media and regenerated after adsorption. The results show that the wrinkled MOFs could be used as an excellent candidate for SA adsorption in real wastewater. More importantly, this strategy could guide the preparation of different kind of MOFs to adsorb PPCPs in wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Bio Materials
·
2023
·
IF 4.7
Xueying Yu,Xinnan Wang,Wei He
We demonstrate a macromer-type bisepoxide, poly(ethylene glycol) diglycidyl ether, polymerizing readily with a trifunctional polyetheramine Jeffamine T-403 in water to facilitate the development of a series of microgels abbreviated as PMG. Simply by varying the concentration of the as-prepared thermoresponsive intermediate prepolymer from 1 to 2 and 4%, hydrodynamic sizes of the resulting P1MG, P2MG, and P4MG are easily tuned in the submicrometer to micrometer range shown by the dynamic light scattering results. Besides size difference, these microgels also deform differently, where the drying-induced deformation effect is most severe for P1MG and least prominent for P4MG. Simple evaporative deposition of PMG into multilayer packing provides versatile and green options for microgel-mediated surface structuring of agarose hydrogels. Specifically, deformabile P1MG- and P2MG-derived coatings render agarose gel microwrinkle textures by buckling against swelling-induced surface instability. Conversely, stiffer P4MG microgels lead to a patchy patterned hierarchical coating on agarose, similar to the cracking effect in drying colloidal films. The straightforward microgel-on-macrogel strategy allows integration of both wrinkle and patchy patterns to generate Janus-type agarose gels, just by rationally arranging the coating sequence. Diversifying topographic features attainable through microgel-based coatings on hydrogels could potentially make the sustainable and biocompatible material of agarose a more compelling choice for bioapplications. Brief demonstrations of the broad applicability of P1MG toward wrinkling of proteinaceous and synthetic hydrogels further highlight promising prospects of the PMG microgel-on-macrogel functionalization strategy.
研究领域:
材料科学
·
生物医学工程
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2019
·Vol. 11
·期 46
·22467-22474
·
IF 6.97
Kong Liu,Yang Sun,Qicong Li,Cheng Yang,Muhammad Azam,Zhijie Wang,Shengchun Qu,Zhanguo Wang
Fabricating thin film solar cells on the light-trapping structures is an effective way to improve the absorption of the active layer. Here, we report a non-fullerene organic solar cell based on a PBDB-T:ITIC active layer, a wrinkled metal rear electrode, and a MoO3/Ag/ZnS front transparent electrode. Optical characterization shows that the wrinkled metal structure can remarkably increase the absorption of the active layer in a broadband range. The resulting device shows a power conversion efficiency of 8.2%, which increases by 4.6% compared to that of the flat counterpart. Apart from higher absorption, the improved performance can also be ascribed to the efficient charge transport and collection in the device due to the lower defect density, larger interfacial area, and smaller active layer thickness. A device with a power conversion efficiency of 10.19% based on the flat ITO/glass substrate is also achieved. Accordingly, a power conversion efficiency of about 10.66% is predicted under the condition where the wrinkled rear electrode and the ITO front electrode are employed. In addition, the power conversion efficiency of the wrinkled device could increase by about 50.48% compared to that of the flat device under an incident angle of 60 °C, illustrating that a better omnidirectional ability is achieved.
研究领域:
材料科学
·
光学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 142
·期 2
·e56340
·
IF 2.7
Xiaohui Nan,Jiaqing Xie,Yang Gao,Xu Zhang,Xiaofei Lou,Fuwei Wang
Flexible pressure sensors with high sensitivity and a wide detection range must be developed for practical applications. In this study, a dual-active-layer flexible piezoresistive sensor was developed. A reduced graphene oxide film with wrinkled microstructures was prepared by a simple and low-cost substrate pre-stretching method and used as the first active layer. A thermoplastic polyurethane electrospun fiber membrane was modified by fast polydopamine coating and ultrasonication with multi-walled carbon nanotubes and used as the second active layer. Owing to the continuously changing conductive pathways created by the wrinkled microstructures and fiber network under pressure deformation, the sensor achieved a detection range of 0–100 kPa, with sensitivities of 8.5, 1.35, and 0.39 kPa −1 in the ranges of 0–1, 1–20, and 20–100 kPa, respectively. Additionally, the sensor exhibited a low detection limit (2 Pa), response and recovery times of 105 and 85 ms, respectively, and reliable service performance over 10,000 loading/unloading cycles. The sensor enabled real-time monitoring of finger and wrist bending, beaker-holding, and fingertip-sliding on a touch screen, demonstrating its feasible applications in wearable electronics and human–machine interface devices.
研究领域:
材料科学
·
传感器技术
·
生物医学工程
✓ 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）