Advanced Composites and Hybrid Materials最新文献

{"title":"PD-1-engineered manganese-based nanoplatform loaded with CXCL9 induces ICD and intensifies T-cell infiltration for melanoma treatment","authors":"Penglong Ma,&nbsp;Jueshuo Guo,&nbsp;Li Peng,&nbsp;Ting Gao,&nbsp;Na Yu,&nbsp;Tingting Fu,&nbsp;Jianhong Yang","doi":"10.1007/s42114-025-01321-1","DOIUrl":"10.1007/s42114-025-01321-1","url":null,"abstract":"<div><p>Immune checkpoint blockade (ICB) has advanced melanoma therapy, yet its efficacy remains limited by poor tumor immunogenicity and insufficient T-cell infiltration. To overcome these dual barriers, we develop BPC9@MnCO₃, a biomimetic nanoplatform cloaked with PD-1-enriched melanoma membranes and loaded with chemokine CXCL9. The tumor-homing membrane coating directs nanoparticle accumulation in melanoma tissue. Additionally, PD-1 overexpression on the surface of B16-F10 cell membranes blocks the PD-1/PD-L1 signaling axis, thereby restoring T-cell immune function. Within the acidic tumor microenvironment, MnCO₃ decomposes to release Mn²⁺ ions, which trigger immunogenic cell death (ICD) to enhance tumor antigen presentation. Meanwhile, the degradation of MnCO₃ triggers membrane rupture, which increases local CXCL9 levels and leads to enhanced T-cell infiltration, thereby mediating a potent antitumor immune response. Notably, BPC9@MnCO₃ significantly inhibits tumor growth and reduces the number of lung metastases in vivo. These effects are attributed to the ability of BPC9@MnCO₃ to relieve immune checkpoint inhibition and induce ICD effects, effectively improving the immune microenvironment and significantly enhancing T-cell infiltration in tumor tissue. In summary, our work demonstrates a novel strategy to improve ICB efficacy by coordinately targeting immune activation and recruitment barriers.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 3","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01321-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scalable liquid-crystalline MXene films via bio-inspired surface bridging strategy for enhancing electrochemical performance","authors":"Seoyeon Yuk,&nbsp;Seojin Woo,&nbsp;Seulgi Kim,&nbsp;Sunghee Choi,&nbsp;Segi Byun,&nbsp;Sung Ho Song,&nbsp;Dongju Lee","doi":"10.1007/s42114-025-01312-2","DOIUrl":"10.1007/s42114-025-01312-2","url":null,"abstract":"<div><p>The discovery of liquid crystal (LC) phases in dispersions of two-dimensional (2D) materials has opened new opportunities for developing aligned three-dimensional (3D) macrostructures, enabling advancements in energy-storage applications. However, achieving suitable mechanical, electrical, and electrochemical reliability in films, a type of macrostructure, remains challenging due to the inherent self-restacking of MXene sheets and the lack of a proper fabrication protocol for large-scale film formation. Here, we demonstrate a sequential surface bridging strategy for MXene sheets utilizing their LC properties and further boosting both the mechanical and electrochemical properties by facilitating in situ polymerization of norepinephrine between the MXene interlayers. The LC MXene ink, with strong cross-linking connections via synergistic hydrogen and/or covalent bonding, provides high alignment levels in sheets, expanded interlayer structures, and excellent processability for large-area film formation. Consequently, LC MXene/poly(norepinephrine) hybrid films have expanded the range of applications from symmetric electrochemical capacitors to asymmetric Zn-ion hybrid capacitors, achieving a specific capacity of 92.9 mAh/g at 0.2 A/g and an energy density of 55.6 Wh/kg at a power density of 83.6 W/kg. This innovative LC-based self-assembly of MXene with a bio-inspired organic polymer not only addresses the self-restacking issue but also paves the way for high-performance MXene-based hybrid films for next-generation energy-storage devices.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 3","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01312-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Portable dual-mode microfluidic sensor for rapid and sensitive detection of DPA on chip","authors":"Xiaodong Lin,&nbsp;Zhengyang Cao,&nbsp;Shiyu Zeng,&nbsp;Haoyu Zhu,&nbsp;Kairui Zhai,&nbsp;Binfeng Yin,&nbsp;Cheng Zhang,&nbsp;Tao Peng,&nbsp;Teng Cheng,&nbsp;Biao Zhang","doi":"10.1007/s42114-025-01320-2","DOIUrl":"10.1007/s42114-025-01320-2","url":null,"abstract":"<div><p>In this work, we developed a dual-mode portable device that integrated a 3D-printed microfluidic chip for detection of dipicolinic acid (DPA) on chip. The system uses a ratiometric fluorescence nanoprobe formed by embedding carbon dots (CDs) into an Eu³⁺ metal–organic framework (Eu-MOF). Upon reaction with DPA in the microchannel, red fluorescence was enhanced and blue fluorescence suppressed, enabling sensitive ratiometric detection of DPA on chip with a detection limit (LOD) of 0.04 µM. Interestingly, the composite Eu_MOF/CDs/DPA also exhibits peroxidase-like activity, catalyzing the oxidation of TMB into a blue-colored product (oxTMB), which allows for colorimetric detection with an LOD of 10.14 µM. To improve usability and reduce environmental or instrumental variability, incorporating a microfluidic chip into a semi-portable device and utilizing a smartphone, making the system portable and miniaturized for easy operation. In the smartphone-assisted mode, the LODs were 0.33 µM (ratiometric fluorescence) and 12.27 µM (colorimetry), determined by RGB signal analysis, respectively. Moreover, satisfactory recoveries (85–104.6%) were achieved in the spiked real samples. Overall, this platform offers a straightforward, cost-effective, and versatile approach for DPA detection, with promising applications in food safety, environmental monitoring, and clinical diagnostics.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 3","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01320-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143913898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ag/Zn-Ta2C MXene composite as an efficient electrocatalyst for aqueous and non-aqueous CO2 reduction reactions","authors":"Aathilingam Vijayaprabhakaran,&nbsp;Murugavel Kathiresan","doi":"10.1007/s42114-025-01266-5","DOIUrl":"10.1007/s42114-025-01266-5","url":null,"abstract":"<div><p>This study reports the preparation of an Ag and Zn-based Ta₂CT_x MXene composite and its electrocatalytic application towards the electrochemical CO₂RR in aqueous and non-aqueous (organic) solvents. In aqueous 0.1 M KHCO₃, Ag and Zn-based Ta₂CT_x MXene cathode enables efficient conversion of CO₂ to valuable products such as syngas (CO:H₂) and formic acid. Ag/Ta₂CT_x MXene-modified electrode, exhibiting the best CO and H₂ (1:1) selectivity at an applied potential of − 0.65 V <i>vs</i>. RHE syngas, was collectively found to be ~ 80%, whereas at the same potential, some formate (20%) was formed. Similar to Zn/Ta₂CT_x, MXene showed the highest selectivity for CO of 83%. By employing a divided cell setup, CO₂RR occurs at lower reduction potentials, enhancing the feasibility of the process. In non-aqueous media, styrene was electrocarboxylated to phenylsuccinic acid (PSA) and phenylpropanoic acid (PPA) using the same cathode, and the selectivity varies Ag/Ta₂CT_x MXene (45% of PSA) and Zn/Ta₂CT_x (41% of PPA) with respect to the metal ion present in the composite. Mono- and di-carboxylic acids were produced in quantifiable amounts using the MXene-modified electrodes as the cathode and sacrificial aluminum as the anode. This work highlights the potential of MXene-based electrocatalysts for aqueous CO₂RR and selective electrocarboxylation, offering promising pathways for sustainable fuel production and chemical synthesis.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 3","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01266-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hierarchical La-doped Bi₂Fe₄O₉/polypyrrole heterostructures with truncated pyramid nanostructure: A novel design for enhanced electromagnetic wave absorption","authors":"Shengxiang Xiong,&nbsp;Lijuan Cai,&nbsp;Gang Chen,&nbsp;Chengjun Dong,&nbsp;Hongtao Guan","doi":"10.1007/s42114-025-01309-x","DOIUrl":"10.1007/s42114-025-01309-x","url":null,"abstract":"<div><p>This paper presents a novel design for electromagnetic wave (EMW) absorbing materials, focusing on a composite heterostructure of La-doped Bi₂Fe₄O₉ (BLFO) and polypyrrole (PPy) with a truncated pyramid nanostructure. This research aims to overcome the limitations of traditional EMW absorbers by leveraging the unique nano-morphology and properties of the BLFO@PPy composite. The unique microstructure of BLFO endows the composite with abundant interface polarization, while PPy significantly enhances the conduction loss. The resulting synergistic effect substantially improves the EMW absorption performance. The study demonstrates that La doping in Bi₂Fe₄O₉ leads to the formation of a truncated pyramid nanosheet array. When combined with PPy, this structure significantly enhances interface polarization, scattering, and absorption of EMWs. Specifically, the sample BLFO@PPy-3 exhibits superior EMW absorption performance, achieving a minimum reflection loss (<i>RL</i>_min) of − 64.20 dB and an effective absorption bandwidth (EAB) of 7.20 GHz. The effectiveness of this design is validated through comprehensive electromagnetic simulations. The simulation of the radar cross-section (RCS) indicates that BLFO@PPy-3 significantly enhances the stealth performance of unmanned combat aerial vehicles (UCAVs). Furthermore, the paper investigates the thermal conductivity properties of the composite, highlighting its potential for thermal management alongside EMW absorption. By optimizing the PPy content, the thermal properties of the composite can be precisely controlled, ensuring stable performance in practical applications. These findings offer valuable insights into the design and development of next-generation multifunctional EMW absorbing materials for diverse military and industrial applications.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 3","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01309-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultra-high thermal conductivity multifunctional composites with uniaxially oriented boron nitride sheets for future wireless charging technology","authors":"Yiwei Zhou,&nbsp;Yandong Wang,&nbsp;Maohua Li,&nbsp;Yue Qin,&nbsp;Rongjie Yang,&nbsp;Kang Xu,&nbsp;Yingying Guo,&nbsp;Linhong Li,&nbsp;Zhenbang Zhang,&nbsp;Jianxiang Zhang,&nbsp;Boda Zhu,&nbsp;Cheng-Te Lin,&nbsp;Yixiang Xu,&nbsp;Kazuhito Nishimura,&nbsp;Nan Jiang,&nbsp;Jinhong Yu","doi":"10.1007/s42114-025-01308-y","DOIUrl":"10.1007/s42114-025-01308-y","url":null,"abstract":"<div><p>The rapid advancement of wireless charging systems (WCSs), fifth-generation (5G) technology, electric vehicles (EVs), and artificial intelligence (AI) systems result in a critical need for more efficient thermal management materials. h-BN, characterized by its ultra-high theoretical thermal conductivity and excellent electrically insulating properties, serves as a promising filler for blending with polymers to develop high-performance thermally conductive composites. However, it is still a challenge to attain a high through-plane thermal conductivity of over 40 Wm⁻¹ K⁻¹ at filler content at 80 vol%. This persistent limitation is mainly attributed to the fact that most current h-BN used in the manufacture of thermal conductive composites has relatively smaller lateral size (below 40 µm). Additionally, the effective orientation strategy (e.g., ice-template strategy) usually results in difficulties in mass production. Here, a two-step process involving blade coating and lamination is used to prepare BN/TPU composites with an through-plane thermal conductivity of 43 Wm⁻¹ K⁻¹ at h-BN content of 67 vol%. With upper-level electric insulating properties and wave-transparent characteristic, the multifunctional BN/TPU composite shows excellent thermal management ability in the high-power wireless charging area and also has the potential to be used in the 5G communication technology field.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 3","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01308-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Guanine-assisted defect passivation for high-efficiency n-i-p planar perovskite solar cells","authors":"Xiaohui Li,&nbsp;Haogang Meng,&nbsp;Yongxiang Mai,&nbsp;Jianyao Tang,&nbsp;Fu Yang,&nbsp;Putao Zhang,&nbsp;Shengjun Li","doi":"10.1007/s42114-024-01208-7","DOIUrl":"10.1007/s42114-024-01208-7","url":null,"abstract":"<div><p>Perovskite film is a polycrystalline film, coupled with its own soft lattice ionic material characteristics, and the rapid crystallization during the preparation process will inevitably produce a large number of defects within the film and at the interface. However, passivation using Lewis base and Lewis acid compounds can effectively suppress carrier recombination caused by these defects, greatly enhancing the overall performance of perovskite solar cells (PSCs). In order to achieve a better passivation effect, we employed guanine, a purine derivative, as a Lewis base by incorporation, which not only inhibits water degradation and ion migration and reduces trap defects by coordinating with uncoordinated ions, but also improves carrier transport by less non-radiative recombination. The guanine-modified devices exhibited significant enhancements compared to the original devices, with the corresponding devices exhibiting efficiencies of more than 23% (0.04 cm²). The PSCs of the unencapsulated guanine-modified devices, storage in air at 25 ± 5 °C and 5–10% RH for 1200 h, retained 85% of the initial power conversion efficiency (PCE), which is much higher than that of the untreated devices, yielding satisfactory stability.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 3","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-024-01208-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of recent progress in flexible capacitance pressure sensors: materials design, printing methods, and applications","authors":"Soly Mathew,&nbsp;Krishnamoorthi Chintagumpala","doi":"10.1007/s42114-025-01304-2","DOIUrl":"10.1007/s42114-025-01304-2","url":null,"abstract":"<div><p>Rapid advancements in sensor technology have come about due to the emergence of new technologies such as IoT and intelligent homes. In this scenario, smart sensors are becoming more and more necessary. Piezoelectrical or electromechanical principle-based flexible pressure sensors are widely researched due to their wide spread applications in robotics, electronic skin, and healthcare fields. Among the pressure sensors, capacitance pressure sensor (CPS) shows advantageous properties like high dynamic response, low power consumption, wireless data reader, easy sensor integration into data readout circuits, short-term over pressure tolerance, low temperature coefficient, etc. Here, we have attempted to provide readers with an overview of capacitance sensors, their main architectural designs, contact and non-contact printing processes, different techniques to increase the sensitivity of CPS, and—above all—their applications. From the extensive investigation, we found that inkjet, screen, and gravure printing are the preferred printing techniques for fabricating flexible CPS. Wearable electronics has been a booming field in recent years, and the latest developments in the field of flexible capacitance pressure sensor can complement this. A detailed discussion is held regarding the latest advancements in capacitance pressure sensor that can be applied to various real-time scenarios like e-skin, robotics, and vital sign monitoring.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 3","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01304-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unprecedented developed composite polishing system to achieve atomic surface integrating rough and fine polishing using a novel hyper-conjugated pad through controlling the temperature of a proposed green slurry","authors":"Feng Zhao,&nbsp;Zhenyu Zhang,&nbsp;Hongxiu Zhou,&nbsp;Leilei Chen,&nbsp;Kuo Hai,&nbsp;Liwei Wu,&nbsp;Jiahao Yu,&nbsp;Zefang Zhang,&nbsp;Cheng Fan","doi":"10.1007/s42114-025-01306-0","DOIUrl":"10.1007/s42114-025-01306-0","url":null,"abstract":"&lt;div&gt;&lt;p&gt;Efficiency and quality are a pair of everlasting contradictions in manufacturing industry. To achieve atomic surface, it usually consists of rough, precision, and ultra-precision polishing. These processes contain generally several to tens of polishing pads, slurries, and setups, which is time-consuming and expensive. These diverse pads, slurries, and setups are strictly separated, avoiding contamination, damage, and corrosion. To solve these challenges, a novel composite polishing system was developed, using a developed hyper-conjugated polishing pad and custom-made green slurry, through adjusting the temperature of slurry to control the material removal rate (MRR). The MRR was controlled between 40.99 and 133.91 nm/min, by adjusting the temperature between 40 and 80 ℃ via splitting of fibers. After pre-polishing by rare earth cerium oxide abrasive and atomic level polishing by proposed composite system, atomic surface is garnered on fused silica with surface roughness Sa of 0.117 nm at a scanning area of 50 × 50 μm&lt;sup&gt;2&lt;/sup&gt;. It is unprecedented that the developed polishing system realized atomic surface integrating rough and fine polishing on a setup by a composite fiber polishing pad and a new green chemical mechanical polishing (CMP) slurry. The CMP slurry included silica, hydrogen peroxide, sodium hydroxy cellulose, and sodium carbonate. Transmission electron spectroscopy confirms that the thickness of damaged layer is 1.89 nm. Prior to and after splitting of fibers, diameter, bending length, and Shore hardness decreased from 18.33 to 2.48 μm, 13.7 to 4.6 cm, and 52.7 to 20.5 HC, respectively, reducing 86.5%, 66.4%, and 61.1% correspondingly. However, wicking height and specific surface area increased from 7.5 to 14.1 cm, and 0.028 to 1.926 m&lt;sup&gt;2&lt;/sup&gt;/g, separately, enhancing 88% and 6779%, accordingly. An interactive model was built among a single fiber, abrasive, and workpiece. After splitting of fibers, the maximum stress exerted on axial and radial directions of fiber are 2.45 and 1.36 MPa, respectively, reducing 59% and 73% compared with those of prior to splitting correspondingly. A model of repeated unit cell was constructed between polishing pad and slurry. It is calculated that the stress of 51.15% units is in the range between 0.1 and 0.5 MPa, while that of 92.83% fibers varies from 0.05 to 1 MPa after splitting. A macroscale model of polishing pad was established. Peak stress of an unsplit pad is high up to 13.19 MPa, while that of split one decreases to 2.42 MPa, reducing 81.65%. At an actual polishing pressure of 30 kPa, contact area of a split polishing pad between fibers and workpiece reaches 15.38%, promoting 44.09% compared with that of an unsplit one. Our developed composite polishing system paves a new way to fabricate atomic surface using a hyper-conjugated polishing pad and a green slurry on a setup, saving several and tens of various pads, slurries, and setups, which are both time and cost-effective and ha","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 3","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01306-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanically robust polyacrylamide/gelatin ionic hydrogels reinforced by sodium alginate for wearable device applications","authors":"Dapeng Cui,&nbsp;Yunlong Sun,&nbsp;Tuo Li,&nbsp;Zhiwei Hu,&nbsp;Yi Zhao,&nbsp;Xuanye Wang,&nbsp;Shengxi Chen,&nbsp;Zhexenbek Toktarbay,&nbsp;Huige Wei","doi":"10.1007/s42114-025-01286-1","DOIUrl":"10.1007/s42114-025-01286-1","url":null,"abstract":"<div><p>Herein, an ionic hydrogel using sodium alginate (SA) toughened polyacrylamide (PAM)/gelatin semi-interpenetrating network with both high strength and high ductility for stress sensing is constructed. In the designed PGS-Ca²⁺/LiCl (short for PAM/Gelatin/SA-Ca²⁺/LiCl) hydrogel network, PAM acts as a flexible hydrophilic skeleton, and gelatin acts as a flexible secondary network. The addition of SA inhibits the phase separation of gelatin and improves the transparency of hydrogel. Meanwhile, the macromolecule SA complexes with metal ions of Ca²⁺, leading to the formation of a distinct complex structure which remarkably enhances the mechanical robustness of the hydrogel. Moreover, the incorporation of inorganic salt LiCl confers high electrical conductivity, concomitantly reducing the freezing point, mitigating water loss, and enhancing the environmental stability of the hydrogel, thereby endowing the hydrogel with improved adaptability to diverse operating conditions. PGS-Ca²⁺/LiCl has excellent mechanical properties and ultra-high ductility (with a tensile strength up to 110 kPa at break, a strain up to 1500% at break), as well as high stress sensing properties (with an excellent GF of 1.07, a pressure sensitivity of 0.0107). In addition, a handwriting sensor, a Morse code sensor, and an 8 × 8 sensor have been designed to recognize different signals and show the movement of objects and different pressures, which shows that PGS-Ca²⁺/LiCl ionic hydrogels have great potential in electronic skin, wearable and flexible devices.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 3","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01286-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}