{"title":"Bioinspired wood-based wedge-shaped surface with gradient wettability for enhanced directional liquid transport and fog harvesting.","authors":"Kaiwen Chen, Luyao Chen, Xianfu Xiao, Cheng Hao, Haonan Zhang, Tongtong Fu, Wei Shang, Hui Peng, Tianyi Zhan, Jianxiong Lyu, Ning Yan","doi":"10.1039/d5mh00440c","DOIUrl":"https://doi.org/10.1039/d5mh00440c","url":null,"abstract":"<p><p>Inspired by cactus spine and desert beetle back structures, we developed a wood-based wedge-shaped surface with gradient wettability for efficient and controlled spontaneous directional liquid transport. Utilizing the natural anisotropic and porous structure of wood, the wedge-shaped surface exhibited a continuous gradient wettability after chemical treatments combined with UV-induced modifications. The resulting surface enabled highly efficient directional liquid transport with transport rates reaching up to 8.9 mm s<sup>-1</sup> on horizontal placement and 0.64 mm s<sup>-1</sup> on vertical surfaces against gravity. By integrating geometric curvature and surface energy gradients, the innovative design achieved synergistic Laplace pressure-driven and wettability-driven liquid motions. To further demonstrate its potential for practical application, a fog-driven power device constructed using the gradient wettability wood with cactus spines not only enhanced water harvesting and energy conversion capabilities but also offered an environmentally friendly system. This study expanded the design toolbox for bioinspired liquid management surfaces, offering promising applications in water resource management, energy harvesting, and microfluidic devices.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143954986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Thermogalvanic hydrogels for low-grade heat harvesting and health monitoring.","authors":"Lili Liu, Xin Guo, Ding Zhang, Rujun Ma","doi":"10.1039/d4mh01931h","DOIUrl":"https://doi.org/10.1039/d4mh01931h","url":null,"abstract":"<p><p>Direct conversion of ubiquitous heat energy into electricity is crucial for the development of green and sustainable power sources and self-powered electronic devices. Compared with traditional semiconductor thermoelectric materials, emerging thermogalvanic hydrogels offer high thermopowers, excellent intrinsic flexibilities, and low manufacturing costs, making them highly promising for low-grade thermal energy harvesting, self-powered flexible electronics, and wearable health monitoring devices. This review summarizes the recent advancements in thermogalvanic hydrogels, focusing on the strategies employed to enhance their thermoelectric properties and mechanical performances and expand their operational temperature ranges. We also explore their potential applications in low-grade heat harvesting for powering electronic devices and wearable applications. This review will provide valuable insights and guidance for the development and application of high-performance thermogalvanic hydrogels by systematically analyzing the potential of thermogalvanic hydrogels for flexible energy supply systems, outlining the performance enhancement mechanisms, and further discussing the current challenges and opportunities.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143951494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hongyi Cai, Max Tepermeister, Chenyun Yuan, Meredith N Silberstein
{"title":"Regulating hydrogel mechanical properties with an electric field.","authors":"Hongyi Cai, Max Tepermeister, Chenyun Yuan, Meredith N Silberstein","doi":"10.1039/d5mh00308c","DOIUrl":"https://doi.org/10.1039/d5mh00308c","url":null,"abstract":"<p><p>Stimuli-responsive polymeric materials have attracted significant attention due to their ability to change properties in response to various external stimuli. Using an electric field as the stimulus is of particular interest as it possesses the potential for seamless integration of materials with electronic systems. While many materials with electric field responsive actuation have an associated mechanical property change, it is beneficial to develop materials that exhibit mechanical property changes without accompanying significant shape deformation. To address this challenge, here we designed a semi-interpenetrating polymer network (semi-IPN) hydrogel system containing both polyelectrolytes and salt ions, which enables electric field induced changes in mechanical properties while minimizing actuation. We first successfully verified the viability of our design by removing salt ions through a diffusion-only method where we witnessed the stiffness increased to 4.5 times the initial value while still being highly deformable. After this, we applied an electric field to transport the salt ions out of the hydrogel, as shown by both Raman spectroscopy and scanning electron microscopy. We were able to show a time-dependent stiffness increase, the maximum of which was 5 times the original stiffness. We quantified ion transport and water-splitting in the hydrogel by both experiments and simulations. Following this, we showed functional system reversibility by reversing the direction of the current to reinject salt ions into the semi-IPN hydrogel and reducing its stiffness to below the initial value. It's worth noting that our simulations enable us to understand the governing mechanisms behind ion generation and salt transport that leads to mechanical property changes. Finally, we were able to fabricate a spatially variable stiffness haptic interface with our hydrogel, with demonstrated reversibility and cyclability. This research can possibly find applications in soft robotics and haptics and also inspire the development of bio-compatible electronics related devices.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143953171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haoran Gu, Yao Tong, Hongli Xu, Cheng Wang, Bowei Xu, Dongling Geng, Laju Bu, Long Ye, Yunfeng Deng, Yanhou Geng
{"title":"A cathode interlayer based on an indandione-terminated quinoidal compound enables 19% efficiency in binary organic solar cells.","authors":"Haoran Gu, Yao Tong, Hongli Xu, Cheng Wang, Bowei Xu, Dongling Geng, Laju Bu, Long Ye, Yunfeng Deng, Yanhou Geng","doi":"10.1039/d5mh00536a","DOIUrl":"https://doi.org/10.1039/d5mh00536a","url":null,"abstract":"<p><p>Cathode interlayers (CILs) are critical components in organic solar cells (OSCs), yet high-performance CILs remain predominantly reliant on aromatic units. Herein, we rationally design and synthesize a CIL (Q6P) based on an indandione-terminated quinoidal structure. The molecular structure of Q6P was unambiguously confirmed through single-crystal X-ray diffraction and supported by density functional theory (DFT) calculations. Incorporating phosphonate side chains not only enhanced the solubility of Q6P in polar solvents but also imparted self-doping characteristics, with the self-doping mechanism verified experimentally. Additionally, the quinoidal framework and low-lying LUMO energy level synergistically improved the self-doping level of Q6P. Q6P also demonstrated good charge transport and efficient charge extraction. When integrated into OSCs, the Q6P-based devices achieved a power conversion efficiency (PCE) of over 19%.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144053004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Flexible solid-liquid nanocomposite with high surface resistivity for effective electromagnetic interference shielding and heat dissipation.","authors":"Yue Sun, Tinglei Dong, Ziyuan Chai, Mingxue Li, Lei Jiang, Liping Heng","doi":"10.1039/d5mh00145e","DOIUrl":"https://doi.org/10.1039/d5mh00145e","url":null,"abstract":"<p><p>The miniaturization of electronics and increased power density pose significant challenges, including short circuits, electromagnetic interference (EMI) and heat accumulation. Developing electrically insulative materials that integrate EMI shielding and heat dissipation capabilities offers an effective solution. However, developing such materials is challenging due to the inherent conflict between creating electrically and thermally continuous pathways for EMI shielding and heat dissipation while maintaining electrical insulation. Herein, we sequentially integrated boron nitride nanosheet-bridging-liquid metal (BLM) and MXene-bridging-liquid metal (MLM) solid-liquid bi-continuous networks into poly-<i>p</i>-phenylene benzobisoxazole (PBO) nanofiber matrices. This yielded a sandwich-structured nanocomposite (S-PBLM/MLM) that demonstrates high electrical insulation (volume resistivity of 1.9 × 10<sup>13</sup> Ω cm, breakdown voltage of 139 kV mm<sup>-1</sup>), promising EMI shielding performance (68.2 dB at a thickness of 25 μm), and excellent in-plane thermal conductivity (50.3 W m<sup>-1</sup> K<sup>-1</sup>). Meanwhile the S-PBLM/MLM nanocomposite demonstrates stable EMI shielding performance even after enduring harsh conditions, including mechanical wear, high humidity storage, ultrasonication treatment, extreme temperatures, thermal shock and direct burning. Furthermore, the nanocomposite displays high mechanical strength (tensile strength: 252.6 MPa, toughness: 8.8 MJ m<sup>-3</sup>). This nanocomposite has significant potential in the fields of modern electronics, aerospace, and defense.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143951906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pengsheng Li, Zixu Sa, Zeqi Zang, Guangcan Wang, Mingxu Wang, Lei Liao, Feng Chen, Zai-Xing Yang
{"title":"Light-induced tunable threshold voltage and synaptic behavior of a solution-processed indium oxide thin film transistor for logic computing and image denoising.","authors":"Pengsheng Li, Zixu Sa, Zeqi Zang, Guangcan Wang, Mingxu Wang, Lei Liao, Feng Chen, Zai-Xing Yang","doi":"10.1039/d5mh00102a","DOIUrl":"https://doi.org/10.1039/d5mh00102a","url":null,"abstract":"<p><p>Oxygen vacancies (V<sub>O</sub>) play a crucial role in promising amorphous metal oxide films for next-generation logic and synaptic computing. Here, a simple and reversible annealing-illumination method is introduced to control the concentration of V<sub>O</sub> in solution-processed amorphous indium oxide thin-film transistors (TFTs), resulting in the precise regulation of the threshold voltage (<i>V</i><sub>TH</sub>) in a large range from 1.6 V to -21.7 V. Meanwhile, clear photo-synaptic behaviors are observed. These impressive behaviors result from the V<sub>O</sub>-related carrier trapping and detrapping processes. With the precise regulation of <i>V</i><sub>TH</sub> by illumination, the TFTs are constructed as inverters, displaying tunable voltage gains from 5.7 to 10.6. Owing to the excellent photo-synaptic behavior, the TFTs are employed to demonstrate the optoelectronic logic functions of \"OR\", \"AND\", \"NOR\", and \"NAND\". Moreover, a 5 × 5 TFTs array is employed to demonstrate the real-time image preprocessing and image denoising functions, displaying an impressive accuracy of 96%. Furthermore, the improvement of the recognition accuracy will increase to a maximum value of 88%. This work shows the potential of amorphous indium oxide TFTs in future multifunctional logic circuits and efficient, all-optical neuromorphic vision systems.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143956383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yinchang Ma, Shijie Xu, Zhuo Chen, Chen Liu, Tao Yang, Yuan Yan, Jefferson Zhe Liu, Fei Xue, Xixiang Zhang
{"title":"The van der Waals antiferromagnetic proximity effect at the FePS<sub>3</sub>/Pt uncompensated interface.","authors":"Yinchang Ma, Shijie Xu, Zhuo Chen, Chen Liu, Tao Yang, Yuan Yan, Jefferson Zhe Liu, Fei Xue, Xixiang Zhang","doi":"10.1039/d5mh00023h","DOIUrl":"https://doi.org/10.1039/d5mh00023h","url":null,"abstract":"<p><p>van der Waals antiferromagnetic insulators are emerging as promising candidates for spintronics and quantum computing due to their unique magnetic properties. However, detecting antiferromagnetism at the atomic scale remains challenging due to compensated spin order. In this study, we present a novel approach to observe the antiferromagnetic proximity effect in FePS<sub>3</sub>/Pt heterostructures. This effect arises from interfacial magnetic moments, which induce significant spin polarization in the Pt layer <i>via</i> strong interlayer exchange interactions. As a result, a pronounced anomalous Hall effect is observed in the Pt layer. Fe atom vacancies at the FePS<sub>3</sub>/Pt interface play a critical role in creating localized surface magnetic moments and enhancing exchange interactions. These findings shed light on the complex interplay between two-dimensional antiferromagnetic insulators and heavy metals with strong spin-orbit coupling, providing a promising strategy to exploit interfacial effects for creating magnetization in antiferromagnetic materials.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143952199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Advances in chiral luminescent liquid crystals (CLLCs): from molecular design to applications.","authors":"Parthasarathy Gayathri, Sheng-Qi Qiu, Zhen-Qiang Yu","doi":"10.1039/d4mh01928h","DOIUrl":"https://doi.org/10.1039/d4mh01928h","url":null,"abstract":"<p><p>Research on circularly polarized luminescent (CPL) materials has evolved into a hot research topic because of their potential application prospects in the optoelectronics and chiroptical fields. Achieving a high <i>g</i><sub>lum</sub> value and high quantum efficiency is essential and challenging in CPL research. To date, various material design strategies, such as chiral organic small molecules, CPL polymers, chiral lanthanide complexes, chiral liquid crystals and supramolecular self-assembly, have been proposed to achieve a CPL emitter with a high <i>g</i><sub>lum</sub> value. Among them, chiral luminescent liquid crystals (CLLCs) are recognized as a key approach for achieving CPL materials with a high <i>g</i><sub>lum</sub> factor owing to their exceptional optical properties and flexibility. In this review, we focused on the various synthesis methods employed for developing CLLCs, their properties and their potential applications. The synthesis section discusses various approaches employed to design chiral luminescent liquid crystals, including (i) doping systems for incorporating chiral dopants into achiral liquid crystalline hosts and (ii) nondoping methods for preparing AIE active chiral luminescent liquid crystalline materials. The section on properties highlights how chirality influences the optical, electronic and structural characteristics of CLLCs. Finally, we discuss the diverse applications of CLLCs from photonics and chiral switching to optoelectronic devices and beyond. This review provides new insights into recent research developments and future opportunities in this booming research field. We anticipate that this review could offer a clear picture of the interesting properties of chiral luminescent liquid crystal materials and inspire more researchers to work in this potential area.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143951490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Getnet Kacha Deyu, Marc Wenskat, Isabel González Díaz-Palacio, Robert H Blick, Robert Zierold, Wolfgang Hillert
{"title":"Recent advances in atomic layer deposition of superconducting thin films: a review.","authors":"Getnet Kacha Deyu, Marc Wenskat, Isabel González Díaz-Palacio, Robert H Blick, Robert Zierold, Wolfgang Hillert","doi":"10.1039/d5mh00323g","DOIUrl":"https://doi.org/10.1039/d5mh00323g","url":null,"abstract":"<p><p>The development of superconducting thin films has opened new avenues in electronic and quantum technologies, offering potential breakthroughs in performance due to their unique properties such as zero electrical DC resistance and perfect diamagnetism. Atomic layer deposition (ALD) stands out as a highly precise and uniform technique for fabricating these films based on sequential, and self-limiting gas-solid surface reactions, offering distinct advantages over other deposition methods. This review explores the role of ALD in the production of superconducting thin films, highlighting its ability to control film thickness at the atomic level, ensuring superior uniformity and conformality. The fundamentals of superconductors and the ALD process are discussed, along with a review of various materials used in the field. It also examines the existing and potential applications of these films and considers future prospects and challenges in the field.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143956386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Is the single-ion conductor cubic Li<sub>7</sub>La<sub>3</sub>Zr<sub>2</sub>O<sub>12</sub> a binary ionic electrolyte?","authors":"Peng Bai","doi":"10.1039/d5mh00069f","DOIUrl":"https://doi.org/10.1039/d5mh00069f","url":null,"abstract":"<p><p>Garnet-type cubic Li<sub>7</sub>La<sub>3</sub>Zr<sub>2</sub>O<sub>12</sub> (c-LLZO) is a single-ion conductor, but the dynamics of lithium dendrite <i>initiation</i> during one-way plating in Li|c-LLZO|Li symmetric cells demonstrate several trends that all resemble the dendrite initiation mechanisms found in binary liquid electrolytes. This Opinion article provides an analysis of the possible charge carriers and discusses the four species that coexist in c-LLZO when continued electrochemical reactions take place at the opposite interfaces of the ceramic electrolyte. The new understanding explains the possibility of significant concentration polarization before the onset of dendrites in c-LLZO, without violating commonly accepted rules and physical laws. We conclude that under Faradaic reaction conditions, c-LLZO is a binary ionic electrolyte with as the positive charge carrier and the negative charge carrier, among native but neutral Li×Li and V×Li. Li ions are still the sole conducting ion, but the electrochemically generated Li vacancies significantly alter the long-range transport behavior, rendering the single-ion conductor a binary electrolyte.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143953310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}