{"title":"Modeling and design of 3D printed hyperelastic lattice metamaterials with bionic S-shaped stress-strain behaviors.","authors":"Le Dong, Mengjie Zhang, Dong Wang","doi":"10.1039/d4mh01582g","DOIUrl":"https://doi.org/10.1039/d4mh01582g","url":null,"abstract":"<p><p>Lattice metamaterials made of stiff polymers, ceramics, and metals have been extensively designed to reproduce the mechanical behaviors of biological tissues, holding promising applications in biomedical devices and tissue engineering. However, lattice metamaterials composed of soft materials have been far less explored due to challenges posed by material nonlinearity and large deformations. Here, hyperelastic lattice metamaterials with curved microstructures are fabricated by 3D printing elastomers and are developed to mimic bionic S-shaped stress-strain behaviors. We propose a design framework for 3D printed hyperelastic lattice metamaterials that integrates digital geometry generation, hierarchical mechanics modeling, and validation by finite element (FE) simulations and experiments. The microstructures are modeled through deriving a Timoshenko-type beam theory governed by hyperelastic strain energy potentials. The model is then combined with the deformation and equilibrium analysis considering non-rigid connections between microstructures to predict the mechanical responses of hyperelastic lattice metamaterials. Using the developed design framework, programmable S-shaped stress-strain behaviors and high fracture strains (over 800%) are achieved. We demonstrate S-shaped stress-strain curves that match skeletal and cardiac muscles and highly stretchable lattice sensors for remote controls. This study provides design methods and theoretical guidelines for hyperelastic lattice metamaterials, holding promise for robotic sensors with bionic performance and functionality.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143957165","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":"Hydrazine-assisted water electrolysis system: performance enhancement and application expansion.","authors":"Hao-Yu Wang, Zhong-Yong Yuan","doi":"10.1039/d5mh00118h","DOIUrl":"https://doi.org/10.1039/d5mh00118h","url":null,"abstract":"<p><p>Powered by renewable energy sources, water electrolysis has emerged as a highly promising technology for energy conversion, attracting significant attention in recent years, but it faces severe challenges, especially at the anode. Accordingly, hydrazine-assisted water electrolysis, incorporating the electro-oxidation of hydrazine at the anode, holds great promise for greatly reducing the input voltage and optimizing the system by application expansion. In this review, we present an in-depth overview of hydrazine-assisted water electrolysis, introducing its reaction mechanisms, basic parameters, specific advantages compared with conventional water electrolysis and other hybrid water electrolysis systems, strategies for developing efficient electrocatalysts with enhanced electrocatalytic performances, and especially its potential application expansion. An analysis of its technical and economic aspects, feasibility studies, mechanistic investigations, and relevant comparisons are also presented for providing a deeper insight into hydrazine-assisted water electrolysis. Finally, the potential avenues and opportunities for future research on hydrazine-assisted water electrolysis are discussed.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143955319","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}
Guangyuan Chen, Chenyang Lin, Fangchong Han, Haotian Zhang, Shijian Zhou, Fu Yang, Yan Kong, Edison Huixiang Ang
{"title":"Recent advances in photocatalytic H<sub>2</sub>O<sub>2</sub> production: modification strategies of 2D materials and <i>in situ</i> application of H<sub>2</sub>O<sub>2</sub>.","authors":"Guangyuan Chen, Chenyang Lin, Fangchong Han, Haotian Zhang, Shijian Zhou, Fu Yang, Yan Kong, Edison Huixiang Ang","doi":"10.1039/d5mh00295h","DOIUrl":"https://doi.org/10.1039/d5mh00295h","url":null,"abstract":"<p><p>Environmental pollution and the energy crisis are two major problems that threaten human health and restrict industrial development. Hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) is a green oxidant and clean energy widely used in sterilization, degradation of pollutants and as an energy carrier, which is one of the important strategies to solve these two major problems. In recent years, solar-driven photocatalytic production of H<sub>2</sub>O<sub>2</sub> has gained significant attention and been extensively studied. Two dimensional (2D) material photocatalysts offer promising prospects and distinct advantages for H<sub>2</sub>O<sub>2</sub> production. However, their performance is hindered by challenges such as rapid electron-hole recombination, wide bandgaps, and slow reaction kinetics. Additionally, the high solubility of H<sub>2</sub>O<sub>2</sub> in water and its tendency to decompose easily make it difficult to recover from solutions containing sacrificial agents, thereby restricting its practical applications. To the best of our knowledge, there are few reviews focused on the photocatalytic production of H<sub>2</sub>O<sub>2</sub> using 2D material composite catalysts and its <i>in situ</i> applications. This review provides a detailed discussion of various strategies, including introducing vacancy defects, elemental doping, heterojunction engineering, functionalization and multi-strategy coupling, to improve the photocatalytic performance of 2D material composite photocatalysts. Furthermore, this review highlights the <i>in situ</i> applications of H<sub>2</sub>O<sub>2</sub> produced through photocatalysis in diverse fields, including water purification, sterilization, and pharmaceutical intermediate synthesis. It concludes by outlining the key challenges in the photocatalytic production of H<sub>2</sub>O<sub>2</sub> and proposing practical solutions.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144053016","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":"Filling core-shell microneedles with pressurized oxygen-embedded particles (POPs) to improve photodynamic therapy.","authors":"Weijiang Yu, Junzhe Fu, Yonghang Chen, Yixian Mu, Qiao Jin, Youxiang Wang, Jian Ji","doi":"10.1039/d5mh00253b","DOIUrl":"https://doi.org/10.1039/d5mh00253b","url":null,"abstract":"<p><p>Photodynamic therapy (PDT) represents a spatiotemporal and minimally invasive treatment for superficial diseases. Enhancing the delivery efficiency of photosensitizers and elevating oxygen levels at the lesion site are two established strategies for improving its effectiveness. Here, we introduce a strategy involving the release of pressurized oxygen to drive photosensitizer diffusion, which is incorporated into a core-shell microneedle (MN) system to improve PDT. This MN system comprises a polyvinylpyrrolidone shell and methylene blue (MB) photosensitizer loaded core particles containing pressurized oxygen bubbles. Upon insertion, the aqueous tissue environment triggers the dissolution of particles within the MNs, enabling the rapid release of oxygen, thereby promoting the diffusion of MB. <i>In vitro</i> experiments demonstrate that these particles could effectively accelerate the release and diffusion of MB. The released oxygen could relieve hypoxia and increase the generation of reactive oxygen species (ROS) of PDT. In a mouse melanoma model, the MN system enhances tumor growth inhibition induced by PDT and mitigates tumor metastasis. This innovative system offers an autonomous, safe, and convenient approach for localized gas delivery and drug diffusion, potentially creating new avenues for efficiently combining gas and other therapies for superficial diseases.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143953350","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}
Renfu Zhang, Qingjiao Huang, Zhexuan Ou, Tooba Afaq Khan, Menghan Yin, Er Gao, Jiawei Sun, Rui-Tao Wen
{"title":"Retaining superior electrochromic performance by effective suppression of ion trapping upon cycling.","authors":"Renfu Zhang, Qingjiao Huang, Zhexuan Ou, Tooba Afaq Khan, Menghan Yin, Er Gao, Jiawei Sun, Rui-Tao Wen","doi":"10.1039/d5mh00229j","DOIUrl":"https://doi.org/10.1039/d5mh00229j","url":null,"abstract":"<p><p>Smart windows based on electrochromic technology play a key role in decarbonization. However, cathodic electrochromic electrodes suffer from ion trapping induced performance degradation upon long-term cycling. Here, we present guidelines for designing electrolytes and preventing ion trapping to achieve optimal durability. Specifically, by controlling the solvation energy of the salts in the electrolyte, anions can be prevented from penetrating the cation-solvent sheath, thereby inhibiting their involvement in the ion trapping process. Therefore, cycling stability is significantly extended, <i>i.e.</i>, no observed degradation after 1000 cycles. Following this concept, we further reveal that for the degraded electrodes which cannot be restored in an electrolyte with relatively weak cation-solvent interaction, they can be successfully recovered by switching to an electrolyte with strong cation-solvent interaction. Our work not only provides strategies to suppress the ion trapping and prolong the cycling stability of electrochromic electrodes, but also evokes the importance of electrode-electrolyte interaction to the electrochromic community.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143955936","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}
Hangyang Li, Gang Ye, Yazhuo Kuang, Mingyu Ma, Shuyan Shao, Jian Liu
{"title":"Side-chain engineering of conjugated molecules for n-type organic thermoelectrics.","authors":"Hangyang Li, Gang Ye, Yazhuo Kuang, Mingyu Ma, Shuyan Shao, Jian Liu","doi":"10.1039/d5mh00067j","DOIUrl":"https://doi.org/10.1039/d5mh00067j","url":null,"abstract":"<p><p>The growing need for renewable energy sources has led to increased interest in organic thermoelectric (OTE) materials, which are mechanically flexible, cost-effective to process, and capable of converting thermal energy into electricity. Although p-type OTEs have shown promising efficiency, the development of n-type OTEs has not kept pace with their p-type counterparts in terms of performance, highlighting the need for additional research and innovation. This review outlines the basic principles and molecular design strategies for n-type OTEs. It then examines side-chain engineering in-depth, underscoring the complementary effects of backbone and side-chain modifications. Lastly, it discusses the challenges and future directions in developing n-type OTEs to inform the design strategies for these materials.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143953550","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":"Leveraging bound states in the continuum for advanced ultra-sensitive sensing technologies.","authors":"Dev Kumar Thapa, Soumava Biswas","doi":"10.1039/d5mh00413f","DOIUrl":"https://doi.org/10.1039/d5mh00413f","url":null,"abstract":"<p><p>Traditional sensing methods, such as ELISA, PCR, and electrochemical sensors, face challenges like limited sensitivity, high costs and complex sample preparation. In contrast, optical sensors, particularly surface plasmon resonance (SPR) and dielectric-based guided-mode resonance (GMR) sensors have emerged as promising alternatives. These sensors offer non-invasive measurements, remote readouts, and enhanced sensitivity. While SPR sensors benefit from high local sensitivity, they are limited by energy losses in the metal, reducing the overall quality-factor (<i>Q</i>). On the other hand, GMR sensors, which use low-loss dielectric materials, achieve higher <i>Q</i> factors but are constrained by their inability to effectively detect biomolecules located farther from the sensor surface. Recently, materials that support bound states in the continuum (BICs) have attracted attention for their potential to achieve infinite <i>Q</i> factors, resulting in ultra-narrow resonance linewidths, exceptional precision, and enhanced light-matter interaction. These features make BICs highly promising for sensing applications. This review offers an in-depth understanding of BICs, explaining their principles, including the topological nature of BICs, and exploring recent advancements in BIC-based refractive index sensing technologies. It focuses on material platforms such as dielectric, plasmonic, and hybrid materials that host BICs. Additionally, the review addresses challenges in the field and suggests potential solutions.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143956380","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}
Junho Sung, Hyung Jin Cheon, Donghwa Lee, Sein Chung, Landep Ayuningtias, Hoichang Yang, Byeongjun Jeon, Bumjoon Seo, Yun-Hi Kim, Eunho Lee
{"title":"Improving ion uptake in artificial synapses through facilitated diffusion mechanisms.","authors":"Junho Sung, Hyung Jin Cheon, Donghwa Lee, Sein Chung, Landep Ayuningtias, Hoichang Yang, Byeongjun Jeon, Bumjoon Seo, Yun-Hi Kim, Eunho Lee","doi":"10.1039/d5mh00005j","DOIUrl":"https://doi.org/10.1039/d5mh00005j","url":null,"abstract":"<p><p>Several studies have explored ways to enhance the interaction between the channel layer and ions to realize artificial synapses using organic electrochemical transistors (OECTs). The attachment of glycol side chains can remarkably enhance the ion transport to improve nonvolatile properties <i>via</i> polar groups; however, a comprehensive and methodical evaluation of this phenomenon has yet to be conducted. In this study, we observed the reactivity toward ions and the doping mechanism that changes by glycol group substitution to the side chains of DPP polymers. The analysis revealed that in the presence of glycol chains, the doping mechanism changes to diffusion-dominated, which allows ions to penetrate the channel and interact with it more intensely, thereby enhancing synaptic performance. The fabricated devices successfully mimicked the behavior of biological synapses, such as good long-term synaptic plasticity (LTP), paired-pulse facilitation (PPF), and long-term potentiation/depression (LTP/D). Based on these properties, a high accuracy of 93.7% has been achieved in an artificial neural network for handwritten data recognition at the Modified national institute of standards and technology (MNIST). These findings provide new insights for the realization of artificial synapses and could inspire other research involving reactions with ions.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143953421","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":"Exploring the wonders of polysaccharides in porous materials.","authors":"Qiping Zhan, Simin Xuan, Linying Su, Yujie Hou, Peng Jin, Yonghua Zheng, Zhengguo Wu","doi":"10.1039/d4mh01670j","DOIUrl":"https://doi.org/10.1039/d4mh01670j","url":null,"abstract":"<p><p>Porous materials are a class of materials with abundant micro-nano pore structures, low density, light weight, and large specific surface area, and they have been widely used in various fields. Polysaccharides have the characteristics of designability, adjustability, biodegradability and safety and have been widely and deeply studied by researchers working on porous materials. Based on previous studies and in combination with our own research, this review describes the basic concepts and types of polysaccharide-based porous materials (including aerogels, sponges, foams, porous carbons and hydrogels), summarizes their preparation methods, and offers an in-depth analysis and discussion of their applications in medicine, food, environment and other applications. Finally, the current challenges and future prospects of polysaccharides-based porous materials are summarized. This review aims to systematically analyze and summarize the application value of polysaccharide-based porous materials and provide theoretical guidance for their further research.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143955124","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":"Materials Horizons Emerging Investigator Series: Professor Milad Kamkar, Multiscale Materials Design Center, University of Waterloo, Canada","authors":"","doi":"10.1039/D5MH90050F","DOIUrl":"10.1039/D5MH90050F","url":null,"abstract":"<p >Our Emerging Investigator Series features exceptional work by early-career researchers working in the field of materials science.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" 10","pages":" 3185-3187"},"PeriodicalIF":12.2,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143955118","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}