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Probing the atomistic origins of magnetic heating with colloidal solutions of ferrimagnets. 用铁磁体胶体溶液探索磁加热的原子起源。
IF 4.5 2区 材料科学
APL Materials Pub Date : 2026-09-01 DOI: 10.1063/5.0344785
Noah Kent, Keisuke Nagao, Daniel Suzuki, Byung Hun Lee, Nannette Chattman, Jorge Marquez Chavez, Katherine Lei, Ye Ji Kim, Jacob Beckham, Geoffrey Beach, Polina Anikeeva
{"title":"Probing the atomistic origins of magnetic heating with colloidal solutions of ferrimagnets.","authors":"Noah Kent, Keisuke Nagao, Daniel Suzuki, Byung Hun Lee, Nannette Chattman, Jorge Marquez Chavez, Katherine Lei, Ye Ji Kim, Jacob Beckham, Geoffrey Beach, Polina Anikeeva","doi":"10.1063/5.0344785","DOIUrl":"10.1063/5.0344785","url":null,"abstract":"<p><p>Understanding the physics of alternating magnetic field-induced heating in magnetic materials is important for optimizing the performance of systems, such as electrical transformers, spintronic devices, and nanomaterials used for controlling biological signaling and cancer ablation. Heating in these systems can be accurately explained by theories where magnetization of the material is uniform and the only relevant energy barrier is magnetic anisotropy. In these models, total heating is proportional to hysteresis loop area and scales with the total magnetization. However, these models assume uniform magnetization, which does not necessarily hold in nanostructured materials. A more accurate model should consider all nanomagnetic energy dynamics and show that heating is a result of the rapid movement of individual spins. Here, colloidal solutions of near-compensation GdCo ferrimagnets are used to probe the atomistic energetic losses that occur in non-uniform magnetic systems. Although near-compensation ferrimagnets should not heat according to uniform-magnetization-based theories, we find that heating occurs in a manner that is not dependent on the total hysteresis loop area, but rather on the movement of spins in the Gd and Co sublattices. The atomistic magnetic spin dynamics in ferrimagnets can be connected to uniform-magnetization-based heating theories by considering the energetic losses of the individual sublattices. This modeling predicts that magnetic field-induced heating is optimized in systems where exchange-driven dynamics drive rapid movement of spins, an insight that could allow for optimization of alternate magnetic field induced heating in systems with a non-uniform magnetization.</p>","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"14 9","pages":"091106"},"PeriodicalIF":4.5,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13602384/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149036069","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}
引用次数: 0
Tunable barocaloric effects of two-dimensional hybrid perovskite through carbon chain lengths 二维杂化钙钛矿通过碳链长度的可调压热效应
2区 材料科学
APL Materials Pub Date : 2026-01-01 DOI: 10.1063/5.0313581
Changjiang Bao, Ziqi Guan, H. R. Wang, Kun Zhang, Yanxu Wang, Bo Yang, Liang Zuo, Bing Li
{"title":"Tunable barocaloric effects of two-dimensional hybrid perovskite through carbon chain lengths","authors":"Changjiang Bao, Ziqi Guan, H. R. Wang, Kun Zhang, Yanxu Wang, Bo Yang, Liang Zuo, Bing Li","doi":"10.1063/5.0313581","DOIUrl":"https://doi.org/10.1063/5.0313581","url":null,"abstract":"Organic–inorganic hybrid perovskites have recently emerged as a promising class of barocaloric materials. The entropy change in such materials mainly originates from the order-to-disorder phase transition of the organic carbon chains. However, the influence of the carbon chain length on the barocaloric performance is rarely discussed in the literature. In this study, we report a series of hybrid perovskites, (CnH2n+1NH3)2CoCl4 (n = 8–14), in order to establish a systematic correlation between chain length and barocaloric effects. We demonstrate that the phase transition temperature (from 347 to 374 K) and entropy change (from 130 to 299 J kg−1 K−1) both increase at longer carbon chains, arising from enhanced intra- and/or inter-layer van der Waals interactions that elevate the energy barrier of the order-to-disorder phase transitions. As a representative member, (C10H21NH3)2CoCl4 has been investigated in detail for crystal structure and barocaloric performance. These findings elucidate the influence of the carbon chain length on the barocaloric effect and provide a strategy for further research on barocaloric properties of organic–inorganic hybrid perovskites.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.aip.org/aip/apm/article-pdf/doi/10.1063/5.0313581/20877482/011111_1_5.0313581.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147915648","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}
引用次数: 0
Pilocarpine-loaded hyaluronic acid microneedles promote salivary secretion in non-obese diabetic mice 皮洛卡平透明质酸微针促进非肥胖糖尿病小鼠唾液分泌
2区 材料科学
APL Materials Pub Date : 2026-01-01 DOI: 10.1063/5.0313303
Beikang Tang, Juan Lu, Lifen Zhao, Wuxinrui Huang, Jietun Yang, Yang Yu, Jing Tian, Dashun Zeng
{"title":"Pilocarpine-loaded hyaluronic acid microneedles promote salivary secretion in non-obese diabetic mice","authors":"Beikang Tang, Juan Lu, Lifen Zhao, Wuxinrui Huang, Jietun Yang, Yang Yu, Jing Tian, Dashun Zeng","doi":"10.1063/5.0313303","DOIUrl":"https://doi.org/10.1063/5.0313303","url":null,"abstract":"Patients with Sjögren’s syndrome (SS) often experience severe dry mouth attributed to salivary gland damage. Despite its efficacy, systemic pilocarpine is limited by side effects, while existing local delivery methods (e.g., mouthwashes and sprays) are inconsistent in their efficacy. This study aimed to develop a novel localized delivery system—pilocarpine-loaded hyaluronic acid microneedles (PHMNs)—to overcome the limitations of previous topical approaches by enabling efficient intradermal drug delivery directly to the salivary gland region. The PHMNs, fabricated via a two-step molding process, exhibited robust mechanical strength (1.5 N per needle) for reliable skin penetration and rapid dissolution within 15 min in vivo. In non-obese diabetic mice, a model of SS, the PHMNs stimulated salivary secretion to a level comparable with that achieved by systemic (intraperitoneal or oral) pilocarpine administration. Crucially, pharmacokinetic analysis revealed that the PHMN group maintained significantly lower systemic drug exposure (with no sharp peak and minimal blood concentrations at 30–60 min) than both systemic routes. Furthermore, mice treated with PHMNs for 10 days showed a sustained reduction in daily water intake, indicating effective alleviation of dry mouth symptoms. By combining the precision of intradermal delivery with the biocompatibility of hyaluronic acid, this PHMN system offers a promising, differentiated strategy for managing SS-related xerostomia, providing potent local efficacy while minimizing the risk of systemic side effects associated with conventional pilocarpine therapies.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.aip.org/aip/apm/article-pdf/doi/10.1063/5.0313303/20863084/011104_1_5.0313303.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147914067","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}
引用次数: 0
3D-printed oxygen-releasing scaffolds promote bone repair via angiogenesis and osteogenesis 3d打印释氧支架通过血管生成和成骨促进骨修复
2区 材料科学
APL Materials Pub Date : 2025-12-01 DOI: 10.1063/5.0305073
Hao Wu, Xiqiang Zhong, Pengyuan Leng, Chuchu Sun, Bingju Xie, Liangle Liu, Chun-Yuan Cai
{"title":"3D-printed oxygen-releasing scaffolds promote bone repair via angiogenesis and osteogenesis","authors":"Hao Wu, Xiqiang Zhong, Pengyuan Leng, Chuchu Sun, Bingju Xie, Liangle Liu, Chun-Yuan Cai","doi":"10.1063/5.0305073","DOIUrl":"https://doi.org/10.1063/5.0305073","url":null,"abstract":"The treatment of large bone defects is rendered challenging owing to ischemia, hypoxia, and insufficient osteogenesis in the defect sites. Consequently, the use of oxygen-releasing osteogenic materials has been studied extensively in recent years. This study aimed to construct and test a 3D-printed composite scaffold with both angiogenic and bone-repair functions. A “sandwich”-like structure containing polycaprolactone, hydroxyapatite, and calcium peroxide was fabricated using fused deposition modeling 3D printing technology. The polycaprolactone/hydroxyapatite/calcium peroxide composite scaffolds exhibited excellent mechanical properties and sustained oxygen release for over three weeks. Compared to the control groups, the polycaprolactone/hydroxyapatite/calcium peroxide scaffolds also significantly promoted rat bone marrow mesenchymal stem cell proliferation, migration, adhesion, and osteogenic differentiation, with the scaffold containing 1% calcium peroxide showing the most potent pro-angiogenic and bone-repairing effects. In a rat calvarial defect model, radiographic and histological analyses revealed that the synergistic effects of calcium peroxide and hydroxyapatite significantly induced vascular network formation, accelerated bone regeneration across the entire defect area, and markedly enhanced new bone formation. In summary, this work proposes a novel strategy for fabricating cell- and growth factor-free bone tissue engineering scaffolds with potential for tissue regeneration and clinical replacement.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"13 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330678","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}
引用次数: 0
Wearable self-sustaining triboelectric sensor for basketball posture detection and training feedback 用于篮球姿势检测和训练反馈的可穿戴式自维持摩擦电传感器
2区 材料科学
APL Materials Pub Date : 2025-11-01 DOI: 10.1063/5.0303341
Xiaomin Huo
{"title":"Wearable self-sustaining triboelectric sensor for basketball posture detection and training feedback","authors":"Xiaomin Huo","doi":"10.1063/5.0303341","DOIUrl":"https://doi.org/10.1063/5.0303341","url":null,"abstract":"The advancement of functional hydrogels and the growing use of intelligent wearable sensors in sports have attracted increasing research interest. Here, a high-performance triboelectric nanogenerator (alginate/PSS/CMC-Na-based triboelectric nanogenerator, APC-TENG) is developed by integrating a Zn2+-cross-linked alginate/PSS/CMC-Na hydrogel with PDMS/SiO2 composite films. The hydrogel provides ionic conductivity and mechanical resilience, while the composite films enhance charge trapping and environmental stability. Benefiting from this structure, the APC-TENG delivers an open-circuit voltage (VOC) of 164 V, a short-circuit current (ISC) of 32 μA, a transferred charge (QSC) of 136 nC at 2 Hz, and a maximum power of 3.3 mW at 3 MΩ. The device maintains stable performance over 7500 cycles and under varying humidity conditions. Beyond stability, it is integrated into wearable and sports platforms for self-powered monitoring of human activities, including walking, running, and joint bending, as well as basketball-specific motions such as pressing, dribbling, and shooting. These results demonstrate the potential of APC-TENG as a reliable energy harvester and intelligent motion sensor for wearable electronics, sports training, and human–machine interaction.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"13 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147879537","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}
引用次数: 1
Crossover of critical behavior and magnetocaloric effect in FePd2Te2 with one-dimensional Fe chains 一维铁链FePd2Te2的临界行为和磁热效应的交叉
2区 材料科学
APL Materials Pub Date : 2025-11-01 DOI: 10.1063/5.0300224
Hongyuan Wang, Lanfeng Liu, Wei Li, Si Wu, Baomin Wang
{"title":"Crossover of critical behavior and magnetocaloric effect in FePd2Te2 with one-dimensional Fe chains","authors":"Hongyuan Wang, Lanfeng Liu, Wei Li, Si Wu, Baomin Wang","doi":"10.1063/5.0300224","DOIUrl":"https://doi.org/10.1063/5.0300224","url":null,"abstract":"Recently, a two-dimensional ferromagnet FePd2Te2 exhibiting easy-plane anisotropy with a quasi-one-dimensional spin system has been discovered. We report the magnetic critical behavior and magnetocaloric effect of FePd2Te2 single crystals with magnetic fields applied both in-plane and out-of-plane. Conventional iterative methods failed to determine the critical exponents of the material. Using a modified iterative method, we obtained two sets of critical exponents on both sides of the critical temperature TC: for the in-plane magnetic field direction, β−=0.7155 and γ−=1.0255 below TC and β+=0.6205 and γ+=0.9005 above TC. The reliability of the estimated critical exponents is confirmed through scaling analysis. Under a 7 T magnetic field applied near TC, the maximum entropy change (−ΔSMmax) is 1.38 J kg−1 K−1 and the relative cooling power (RCP) is 73.95 J kg−1. The critical exponents extracted using the magnetic entropy scaling analysis exhibit good consistency with those obtained from the analysis of magnetization isotherms. The renormalization group theory analysis of the critical exponents reveals that FePd2Te2 exhibits long-range magnetic interactions intermediate between the 3D Heisenberg model and mean-field model, displaying weak itinerant ferromagnetism due to the presence of itinerant electrons.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"13 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331797","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}
引用次数: 0
Probing millikelvin temperature sensitivity in chiral nanoparticles via optical forces. 利用光学力探测手性纳米颗粒的毫开尔文温度灵敏度。
IF 5.3 2区 材料科学
APL Materials Pub Date : 2025-10-01 DOI: 10.1063/5.0282973
Seongmin Im, Wei Hong, Gayatri P Chandran, Xing Wang, Yang Zhao
{"title":"Probing millikelvin temperature sensitivity in chiral nanoparticles via optical forces.","authors":"Seongmin Im, Wei Hong, Gayatri P Chandran, Xing Wang, Yang Zhao","doi":"10.1063/5.0282973","DOIUrl":"10.1063/5.0282973","url":null,"abstract":"<p><p>With increasing interest in utilizing nanostructures as nanoscale heat sources, the ability to precisely measure photothermal effects at the nanoscale has become increasingly significant. Techniques based on fluorescence or Raman signals often suffer from challenges in accurate calibration; far-field imaging methods are limited by diffraction-limited spatial resolution; and electron microscopy requires vacuum conditions, restricting <i>in situ</i> applicability. In contrast, tip-based measurement techniques offer sub-diffraction spatial resolution under ambient conditions, making them well-suited for nanoscale photothermal mapping. In this study, we employ tip-based optical force nanoscopy combined with phase-informed decomposition to investigate the origin of the photothermal force, enable nanoscale mapping, and evaluate temperature sensitivity. Our system achieves a temperature sensitivity of ∼0.1 K without necessitating an additional temperature-sensitive layer. We anticipate that our approach has the potential to serve as a versatile platform for investigating localized thermal effects in fields such as semiconductors, nanophotonics, and photocatalysis.</p>","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"13 10","pages":"101112"},"PeriodicalIF":5.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12548564/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145375954","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}
引用次数: 0
A high-resolution neutron diffraction and electron diffraction study of the structure and phase transitions in AgTaO3 AgTaO3结构和相变的高分辨率中子衍射和电子衍射研究
2区 材料科学
APL Materials Pub Date : 2025-09-01 DOI: 10.1063/5.0277464
JW Ben Li, Bryce G. Mullens, Shuki Torii, Wenhai Ji, Zhenhong Tan, Wu Xie, Takashi Kamiyama, Ping Miao, Brendan J. Kennedy
{"title":"A high-resolution neutron diffraction and electron diffraction study of the structure and phase transitions in AgTaO3","authors":"JW Ben Li, Bryce G. Mullens, Shuki Torii, Wenhai Ji, Zhenhong Tan, Wu Xie, Takashi Kamiyama, Ping Miao, Brendan J. Kennedy","doi":"10.1063/5.0277464","DOIUrl":"https://doi.org/10.1063/5.0277464","url":null,"abstract":"The high temperature phase transition behavior of the quantum paraelectric material, AgTaO3, has previously been debated in the literature. To elucidate the phase transitions of AgTaO3, we used neutron powder diffraction and established the phase transition sequence to be SCHEME 1. Phase transition of AgTaO3 as determined by examination of neutron powder diffraction patterns between room temperature and 700 °C. The temperatures for the two higher temperature transitions were also confirmed by differential scanning calorimetry. While the current neutron diffraction and published x-ray results are similar, critical analysis of superlattice reflections concluded the orthorhombic phase to be Ibmm, instead of Cmcm previously considered. The room temperature structure of AgTaO3 is difficult to characterize using powder diffraction due to the presence of domain wall artifacts. This was resolved by employing 3D electron diffraction on powdered AgTaO3 samples, indicating that the sample is rhombohedral at room temperature.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"13 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883838","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}
引用次数: 0
Transactional spinal cord injury repair using water-memory hyperelastic sponge scaffold with inflammatory regulated microenvironment 具有炎症调节微环境的水记忆超弹性海绵支架修复交易性脊髓损伤
2区 材料科学
APL Materials Pub Date : 2025-09-01 DOI: 10.1063/5.0295407
Runquan Zheng, Zhenyu Yao, Jiawei Li, Suode Li, Xuesong Yan, Hongming Wang, Zhiang Wu, Ning Zhang, Zhangying Chen, Xianhu Yue
{"title":"Transactional spinal cord injury repair using water-memory hyperelastic sponge scaffold with inflammatory regulated microenvironment","authors":"Runquan Zheng, Zhenyu Yao, Jiawei Li, Suode Li, Xuesong Yan, Hongming Wang, Zhiang Wu, Ning Zhang, Zhangying Chen, Xianhu Yue","doi":"10.1063/5.0295407","DOIUrl":"https://doi.org/10.1063/5.0295407","url":null,"abstract":"Despite over 20 × 106 patients worldwide suffering from spinal cord injury (SCI), there have been no significant breakthroughs in treatment to date. Although stem cell transplantation has demonstrated initial success, its therapeutic application is restricted by low survival rates, inadequate rates of neuronal differentiation, and a lack of spatial specificity. In this study, we aimed to address the aforementioned challenges in neural stem cell (NSC) transplantation by integrating porous silk fibroin (SF) scaffolds, exosomes, and NSCs to investigate their roles and efficacy in SCI repair. Initially, we screened for the optimal SF concentration to achieve mechanical biomimicry. Subsequently, we combined SF with exosomes and characterized their structural, compositional, elemental, hydrophilic, and shape memory properties, which demonstrated that the addition of exosomes did not significantly influence these characteristics. Furthermore, in vitro live/dead staining and gene expression analyses confirmed that the scaffold exhibits excellent biocompatibility and promotes neuronal differentiation. Finally, in vivo studies on SCI repair demonstrated that this strategy significantly enhances the recovery of motor and sensory functions as well as promotes axonal regeneration and reduces glial scar formation—ideal outcomes for neural repair. In addition, immune-inflammatory assays revealed that this strategy facilitates the transformation of microglia into an anti-inflammatory phenotype, thereby mitigating local inflammation.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"13 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332436","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}
引用次数: 0
A conductive-modified sponge-based PVA physiological saline hydrogel semi-dry electrode for high-quality noninvasive electrophysiological signal recording 一种用于高质量无创电生理信号记录的导电改性海绵PVA生理盐水水凝胶半干电极
2区 材料科学
APL Materials Pub Date : 2025-08-01 DOI: 10.1063/5.0287569
Huihe Chen, Jinbo Wang, Zhibao Huang, Jingjing Jiang, Xilin Li, Jieyu Huang, Yichen Liang, Wenbo Wei, Sen Lin
{"title":"A conductive-modified sponge-based PVA physiological saline hydrogel semi-dry electrode for high-quality noninvasive electrophysiological signal recording","authors":"Huihe Chen, Jinbo Wang, Zhibao Huang, Jingjing Jiang, Xilin Li, Jieyu Huang, Yichen Liang, Wenbo Wei, Sen Lin","doi":"10.1063/5.0287569","DOIUrl":"https://doi.org/10.1063/5.0287569","url":null,"abstract":"With the growing demand for noninvasive monitoring of electrophysiological signals for healthcare and medical diagnostics, the development of flexible and sensitive biosensors has become increasingly important. This work reports a polyurethane/nickel sponge with a PVA/PEDOT:PSS electrode (PuNiPPE) for noninvasive electrophysiological signal recording. The PuNiPPE is constructed on a polyurethane sponge substrate that undergoes surface conductive modification through chemical nickel plating and is filled with a PVA physiological hydrogel incorporating PEDOT:PSS. This design endows PuNiPPE with exceptional flexibility, allowing it to closely adhere to the skin and achieve high-quality signal acquisition. The electrode demonstrates high electrical conductivity and a sustained release mechanism of physiological saline, resulting in low impedance (2829.3 Ω at 1000 Hz) and enhanced electrical stability. In practical applications, PuNiPPE outperforms commercial electrodes in signal-to-noise ratio (SNR), with 23 dB compared to 17 dB, suggesting that PuNiPPE could be a promising solution for improving the efficiency and reliability of wearable biosensors in electrophysiological monitoring.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"13 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147907300","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}
引用次数: 2
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