Mi Ri Nae Lee, Hyowon Jang, Swarup Biswas, Hyeok Kim
Growing concerns about electronic waste underscore the need for materials that combine high performance with environmental sustainability. Here, we report an organic thin-film transistor (OTFT) that incorporates a water-processed gum arabic (GA) dielectric, a natural, biodegradable resin derived from Acacia senegal, to enable eco-friendly device fabrication. The GA dielectric forms defect-free films directly from aqueous solution and exhibits a dielectric constant of approximately 27 at 1 kHz. By optimizing GA concentration, we obtain uniform and stable dielectric layers that substantially enhance charge transport in dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (DNTT) semiconductors, yielding p-type OTFTs operating at ±3 V with high mobilities up to 20.72 cm2 V−1 s−1 and negligible hysteresis. Comparative analyses show that GA facilitates improved molecular ordering of DNTT and suppresses trap formation, outperforming conventional PMMA dielectrics. Upon immersion in water, the GA layer dissolves rapidly (within 30 s), leaving the substrate pristine and fulfilling key criteria for transient electronics. This combination of outstanding electrical performance and complete aqueous degradability highlights the potential of GA for scalable fabrication of green, high-performance electronic devices designed to disappear on demand, supporting urgent efforts toward sustainable and transient electronic technologies.
{"title":"WaterProcessed Gum Arabic Dielectric for Low-Voltage, High-Mobility, and Transient Organic Thin-Film Transistors","authors":"Mi Ri Nae Lee, Hyowon Jang, Swarup Biswas, Hyeok Kim","doi":"10.1002/adfm.202532050","DOIUrl":"https://doi.org/10.1002/adfm.202532050","url":null,"abstract":"Growing concerns about electronic waste underscore the need for materials that combine high performance with environmental sustainability. Here, we report an organic thin-film transistor (OTFT) that incorporates a water-processed gum arabic (GA) dielectric, a natural, biodegradable resin derived from <i>Acacia senegal</i>, to enable eco-friendly device fabrication. The GA dielectric forms defect-free films directly from aqueous solution and exhibits a dielectric constant of approximately 27 at 1 kHz. By optimizing GA concentration, we obtain uniform and stable dielectric layers that substantially enhance charge transport in dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (DNTT) semiconductors, yielding p-type OTFTs operating at ±3 V with high mobilities up to 20.72 cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup> and negligible hysteresis. Comparative analyses show that GA facilitates improved molecular ordering of DNTT and suppresses trap formation, outperforming conventional PMMA dielectrics. Upon immersion in water, the GA layer dissolves rapidly (within 30 s), leaving the substrate pristine and fulfilling key criteria for transient electronics. This combination of outstanding electrical performance and complete aqueous degradability highlights the potential of GA for scalable fabrication of green, high-performance electronic devices designed to disappear on demand, supporting urgent efforts toward sustainable and transient electronic technologies.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"88 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anwesha Chatterjee, Stefanie S. M. Meier, Sara Trujillo, Andreas Möglich, Shrikrishnan Sankaran
Impaired angiogenesis is a central barrier in the treatment of chronic and deep tissue wounds, preventing progression through the normal healing cascade. While the combination of near infrared (NIR) photobiomodulation and pro-angiogenic growth factors has shown synergistic therapeutic benefit, the clinical translation of growth factor therapy is hindered by high cost, instability, and the need for localized dosing to avoid aberrant vasculature. Peptidomimetics such as the VEGF-derived QK peptide offer a more stable and predictable alternative, but still require a means for localized, tunable presentation. Here, we establish an engineered living material-based delivery system that responds to clinically relevant NIR light to produce and release a QK-Fusion protein directly at the target site. The probiotic Escherichia coli Nissle 1917 was engineered with an 800 nm-responsive optogenetic circuit and encapsulated within an optimized alginate core–shell hydrogel that ensures biocontainment while allowing controlled outward diffusion of the secreted peptide. The released peptide remains non-cytotoxic, capable of binding extracellular matrix analogs, and promotes angiogenesis in endothelial cultures and the chick chorioallantoic membrane assay. We thus establish a strategy for developing engineered living materials toward remote-controlled angiogenic stimulation.
{"title":"An Engineered Living Material With Pro-Angiogenic Activity Inducible by Near-Infrared Light","authors":"Anwesha Chatterjee, Stefanie S. M. Meier, Sara Trujillo, Andreas Möglich, Shrikrishnan Sankaran","doi":"10.1002/adfm.202530713","DOIUrl":"https://doi.org/10.1002/adfm.202530713","url":null,"abstract":"Impaired angiogenesis is a central barrier in the treatment of chronic and deep tissue wounds, preventing progression through the normal healing cascade. While the combination of near infrared (NIR) photobiomodulation and pro-angiogenic growth factors has shown synergistic therapeutic benefit, the clinical translation of growth factor therapy is hindered by high cost, instability, and the need for localized dosing to avoid aberrant vasculature. Peptidomimetics such as the VEGF-derived QK peptide offer a more stable and predictable alternative, but still require a means for localized, tunable presentation. Here, we establish an engineered living material-based delivery system that responds to clinically relevant NIR light to produce and release a QK-Fusion protein directly at the target site. The probiotic <i>Escherichia coli</i> Nissle 1917 was engineered with an 800 nm-responsive optogenetic circuit and encapsulated within an optimized alginate core–shell hydrogel that ensures biocontainment while allowing controlled outward diffusion of the secreted peptide. The released peptide remains non-cytotoxic, capable of binding extracellular matrix analogs, and promotes angiogenesis in endothelial cultures and the chick chorioallantoic membrane assay. We thus establish a strategy for developing engineered living materials toward remote-controlled angiogenic stimulation.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"10 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Electrochemical CO2 reduction (ECR) to formate offers a sustainable chemical production pathway, but industrial-scale performance is hindered by limited proton availability at high current densities. While previous research has focused on catalyst electronic structure and CO2 activation, the role of interfacial water configurations in controlling water dissociation kinetics has been overlooked. We manipulate interfacial water molecular orientations using HfO2 as a molecular switch on Bi surfaces, favoring hydrogen-down (OH2↓) over oxygen-down (H2O↓) configurations. The OH2↓ orientation significantly reduces water dissociation energy barriers, producing active hydrogen species, as confirmed by ab initio molecular dynamics simulations and density functional theory calculations. Multiple in situ characterizations validate interfacial water structural changes. HfO2-modified Bi achieves exceptional formate partial current density (−970 mA cm−2) with 97% faradaic efficiency. In the membrane electrode assembly, the catalyst demonstrates high formate selectivity (>90%) across 0.2–1.6 A, establishing interfacial water engineering as a promising strategy for industrial-scale ECR catalysts.
电化学CO2还原（ECR）生成甲酸提供了一种可持续的化学生产途径，但在高电流密度下，质子可用性有限，阻碍了工业规模的性能。以往的研究主要集中在催化剂的电子结构和CO2活化上，而忽略了界面水构型在控制水解离动力学中的作用。我们使用HfO2作为Bi表面上的分子开关来操纵界面水分子取向，使其倾向于氢向下（OH2↓）而不是氧向下（H2O↓）构型。从头算分子动力学模拟和密度泛函理论计算证实，OH2↓取向显著降低了水解离能垒，产生了活性氢。多个原位表征验证了界面水结构的变化。hfo2修饰的Bi具有优异的甲酸偏电流密度（- 970 mA cm - 2）和97%的法拉第效率。在膜电极组件中，催化剂在0.2-1.6 A范围内表现出较高的甲酸选择性（90%），这使得界面水工程成为工业规模ECR催化剂的一种有前景的策略。
{"title":"Engineering Hydrogen-Down Water Configurations for Ampere-Level Electrochemical CO2 Reduction to Formate","authors":"Xiao-Dong Guo, Shao-Qing Liu, Jia-Yi Wu, Qi-Rui Wen, Xiaoxiao Wei, Shu-Wen Wu, Xian-Zhu Fu, Jing-Li Luo","doi":"10.1002/adfm.74953","DOIUrl":"https://doi.org/10.1002/adfm.74953","url":null,"abstract":"Electrochemical CO<sub>2</sub> reduction (ECR) to formate offers a sustainable chemical production pathway, but industrial-scale performance is hindered by limited proton availability at high current densities. While previous research has focused on catalyst electronic structure and CO<sub>2</sub> activation, the role of interfacial water configurations in controlling water dissociation kinetics has been overlooked. We manipulate interfacial water molecular orientations using HfO<sub>2</sub> as a molecular switch on Bi surfaces, favoring hydrogen-down (OH<sub>2</sub>↓) over oxygen-down (H<sub>2</sub>O↓) configurations. The OH<sub>2</sub>↓ orientation significantly reduces water dissociation energy barriers, producing active hydrogen species, as confirmed by ab initio molecular dynamics simulations and density functional theory calculations. Multiple in situ characterizations validate interfacial water structural changes. HfO<sub>2</sub>-modified Bi achieves exceptional formate partial current density (−970 mA cm<sup>−2</sup>) with 97% faradaic efficiency. In the membrane electrode assembly, the catalyst demonstrates high formate selectivity (>90%) across 0.2–1.6 A, establishing interfacial water engineering as a promising strategy for industrial-scale ECR catalysts.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"8 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yanjiao Xing, Qiang Li, Lin Chen, Yongzhen Yang, Shiping Yu, Li Zhang
Thermally activated delayed fluorescence (TADF) materials exhibit promising potential in the biomedical field, owing to their advantageous characteristics such as long luminescence lifetime and high fluorescence quantum yield (FLQY). However, most currently developed TADF materials have poor water solubility, which poses a significant limitation for their direct biological applications. To address this challenge and broaden their applicability in biology, the synthesis of TADF in aqueous solution has emerged as a crucial research direction in recent years. This review focuses on the latest research progress concerning TADF in aqueous solution for biomedical applications. Starting from the classification of TADF materials, it summarizes their construction strategies, performance modulation, and biomedical applications. First, based on the different methods to achieve TADF in aqueous solution, the construction strategies are categorized into three types: the matrix confinement, the self-assembly, and the aggregation-induced. The discussion covers the modulation of their key photophysical properties, including emission wavelength, luminescence lifetime, and FLQY. Subsequently, the review elaborates on the principles and recent advances of these materials in bioimaging, photodynamic therapy, and biosensing. Finally, the future challenges and opportunities for TADF in aqueous solution in the biomedical field are outlined, aiming to provide insights for their rational design and widespread application.
{"title":"Thermally Activated Delayed Fluorescence in Aqueous Solution: Preparation, Performance, and Biomedical Application","authors":"Yanjiao Xing, Qiang Li, Lin Chen, Yongzhen Yang, Shiping Yu, Li Zhang","doi":"10.1002/adfm.202532124","DOIUrl":"https://doi.org/10.1002/adfm.202532124","url":null,"abstract":"Thermally activated delayed fluorescence (TADF) materials exhibit promising potential in the biomedical field, owing to their advantageous characteristics such as long luminescence lifetime and high fluorescence quantum yield (FLQY). However, most currently developed TADF materials have poor water solubility, which poses a significant limitation for their direct biological applications. To address this challenge and broaden their applicability in biology, the synthesis of TADF in aqueous solution has emerged as a crucial research direction in recent years. This review focuses on the latest research progress concerning TADF in aqueous solution for biomedical applications. Starting from the classification of TADF materials, it summarizes their construction strategies, performance modulation, and biomedical applications. First, based on the different methods to achieve TADF in aqueous solution, the construction strategies are categorized into three types: the matrix confinement, the self-assembly, and the aggregation-induced. The discussion covers the modulation of their key photophysical properties, including emission wavelength, luminescence lifetime, and FLQY. Subsequently, the review elaborates on the principles and recent advances of these materials in bioimaging, photodynamic therapy, and biosensing. Finally, the future challenges and opportunities for TADF in aqueous solution in the biomedical field are outlined, aiming to provide insights for their rational design and widespread application.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"10 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haoyang Xu, Zhenfeng Li, Yue Fei, Ali Mohammadi, Ge Li
The pursuit of sustainable, efficient energy storage systems has become increasingly important amid the global energy transition and environmental concerns. Among various candidates, lithium–sulfur (Li–S) batteries stand out for their exceptional energy density, high theoretical capacity, and cost-effectiveness. However, their practical application remains hindered by the shuttle effect of soluble lithium polysulfides (LiPSs) and sluggish redox kinetics. Introducing catalytic materials to regulate polysulfide conversion has proven to be a practical approach to overcoming these challenges. Atomically dispersed catalysts (ADCs), like single-atom catalysts (SACs) and dual-atom catalysts (DACs), have attracted significant attention owing to their nearly 100% atomic utilization, well-defined coordination environments, and tunable electronic structures. By offering abundant active sites, ADCs enable strong LiPSs adsorption, lower conversion barriers, and accelerate redox kinetics, thereby enhancing sulfur utilization and cycling stability. This review systematically summarizes recent advances in the design principles, catalytic mechanisms, and synthesis strategies of ADCs for Li–S batteries, emphasizing the interplay between coordination engineering, electronic structure modulation, and catalytic activity. Finally, the challenges and future directions for developing scalable, durable, and cost-effective ADCs are discussed to guide the rational design of next-generation high-performance Li–S batteries.
{"title":"Single- and Dual-Atom Configurations in Atomically Dispersed Catalysts for Lithium–Sulfur Batteries","authors":"Haoyang Xu, Zhenfeng Li, Yue Fei, Ali Mohammadi, Ge Li","doi":"10.1002/adfm.202532158","DOIUrl":"https://doi.org/10.1002/adfm.202532158","url":null,"abstract":"The pursuit of sustainable, efficient energy storage systems has become increasingly important amid the global energy transition and environmental concerns. Among various candidates, lithium–sulfur (Li–S) batteries stand out for their exceptional energy density, high theoretical capacity, and cost-effectiveness. However, their practical application remains hindered by the shuttle effect of soluble lithium polysulfides (LiPSs) and sluggish redox kinetics. Introducing catalytic materials to regulate polysulfide conversion has proven to be a practical approach to overcoming these challenges. Atomically dispersed catalysts (ADCs), like single-atom catalysts (SACs) and dual-atom catalysts (DACs), have attracted significant attention owing to their nearly 100% atomic utilization, well-defined coordination environments, and tunable electronic structures. By offering abundant active sites, ADCs enable strong LiPSs adsorption, lower conversion barriers, and accelerate redox kinetics, thereby enhancing sulfur utilization and cycling stability. This review systematically summarizes recent advances in the design principles, catalytic mechanisms, and synthesis strategies of ADCs for Li–S batteries, emphasizing the interplay between coordination engineering, electronic structure modulation, and catalytic activity. Finally, the challenges and future directions for developing scalable, durable, and cost-effective ADCs are discussed to guide the rational design of next-generation high-performance Li–S batteries.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"33 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuefei Xiang, Lei Zhong, Minghao Wang, Maofeng Hua, Xiong Pan, Hao Suo, Lei Zhou, Mingmei Wu
Integrating the dual capabilities of X-ray detection/imaging and radiation thermometry into a single scintillator through rational materials design opens a new avenue toward advanced multi-functional radiation-sensing applications. However, developing the functional material remains a challenge. Here, we report a multifunctional X-ray induced persistent luminescence (PersL) SrZnP2O7(SZPO):Dy,Tb phosphor for multimodal sensing applications, including stress monitoring, X-ray detection/imaging, and radiation thermometry. Upon ultraviolet (UV) light and X-ray excitation, an efficient energy transfer (ET) from Dy3+ to Tb3+ occurs via an electric dipole–dipole interaction mechanism. The phosphor also exhibits pronounced mechanoluminescence (ML), that enables real-time structural health monitoring and visual stress distribution mapping in building structures such as bridges. Furthermore, flexible films fabricated with SZPO:Dy,Tb demonstrate excellent recoverable PersL and radioluminescence (RL) with retained anti-thermal quenching (ATQ) behavior, facilitating delayed X-ray imaging and reliable high-temperature detection. By exploiting the distinct temperature-dependent RL responses of the Dy3+ and Tb3+ emissions, we achieve high-performance radiation-excited optical thermometry with superior sensing performance. This work not only presents an integrated phosphor platform for multi-scenario radiation sensing but also provides a viable design paradigm for developing advanced functional materials in X-ray technology and thermometric applications.
{"title":"Designing Multifunctional SrZnP2O7:Dy,Tb Scintillator for Integrated X-ray Imaging and Radiation Thermometry","authors":"Yuefei Xiang, Lei Zhong, Minghao Wang, Maofeng Hua, Xiong Pan, Hao Suo, Lei Zhou, Mingmei Wu","doi":"10.1002/adfm.75012","DOIUrl":"https://doi.org/10.1002/adfm.75012","url":null,"abstract":"Integrating the dual capabilities of X-ray detection/imaging and radiation thermometry into a single scintillator through rational materials design opens a new avenue toward advanced multi-functional radiation-sensing applications. However, developing the functional material remains a challenge. Here, we report a multifunctional X-ray induced persistent luminescence (PersL) SrZnP<sub>2</sub>O<sub>7</sub>(SZPO):Dy,Tb phosphor for multimodal sensing applications, including stress monitoring, X-ray detection/imaging, and radiation thermometry. Upon ultraviolet (UV) light and X-ray excitation, an efficient energy transfer (ET) from Dy<sup>3+</sup> to Tb<sup>3+</sup> occurs via an electric dipole–dipole interaction mechanism. The phosphor also exhibits pronounced mechanoluminescence (ML), that enables real-time structural health monitoring and visual stress distribution mapping in building structures such as bridges. Furthermore, flexible films fabricated with SZPO:Dy,Tb demonstrate excellent recoverable PersL and radioluminescence (RL) with retained anti-thermal quenching (ATQ) behavior, facilitating delayed X-ray imaging and reliable high-temperature detection. By exploiting the distinct temperature-dependent RL responses of the Dy<sup>3+</sup> and Tb<sup>3+</sup> emissions, we achieve high-performance radiation-excited optical thermometry with superior sensing performance. This work not only presents an integrated phosphor platform for multi-scenario radiation sensing but also provides a viable design paradigm for developing advanced functional materials in X-ray technology and thermometric applications.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"27 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dynamic polarization control of terahertz (THz) wave is crucial for advancing applications in 6G communications, molecular sensing and spectroscopic analysis. However, current solid-state THz emitters are limited by restricted polarization tunability, particularly in achieving dynamic control over ellipticity and handedness. Herein, we demonstrate that halide perovskite (MAPbI3) thin film provide an efficient platform for polarization-controlled THz emission under two-color (ω + 2ω) excitation. The MAPbI3 film exhibits exceptional THz emission efficiency under this excitation scheme, outperforming both conventional and 2D semiconductors. The THz emission is dominated by ultrafast injection photocurrents, which are coherently modulated by the relative phase and polarization angle between ω and 2ω beam. Notably, by tuning the polarization angle, both left- and right-handed chiral THz waves can be generated with continuously tunable ellipticity and orientation. This high degree of tunability arises from the fourth-rank tensor of the third-order nonlinear conductivity, which determines both the amplitude and direction of the coherent injection photocurrent. These findings establish halide perovskites as a versatile solid-state platform for coherent control generation of chiral THz radiation, opening new avenues for polarization-sensitive THz photonic technologies.
{"title":"Two-Color Coherent Control of Chiral Terahertz Emission in Halide Perovskites","authors":"Yayan Xi, Yixuan Zhou, Xiao Liang, Xueqin Cao, Yue Wu, Guorong Xu, Yifan Zhang, Wenting Shi, Yuanyuan Huang, Xinlong Xu","doi":"10.1002/adfm.202521708","DOIUrl":"https://doi.org/10.1002/adfm.202521708","url":null,"abstract":"Dynamic polarization control of terahertz (THz) wave is crucial for advancing applications in 6G communications, molecular sensing and spectroscopic analysis. However, current solid-state THz emitters are limited by restricted polarization tunability, particularly in achieving dynamic control over ellipticity and handedness. Herein, we demonstrate that halide perovskite (MAPbI<sub>3</sub>) thin film provide an efficient platform for polarization-controlled THz emission under two-color (<i>ω</i> + 2<i>ω</i>) excitation. The MAPbI<sub>3</sub> film exhibits exceptional THz emission efficiency under this excitation scheme, outperforming both conventional and 2D semiconductors. The THz emission is dominated by ultrafast injection photocurrents, which are coherently modulated by the relative phase and polarization angle between <i>ω</i> and 2<i>ω</i> beam. Notably, by tuning the polarization angle, both left- and right-handed chiral THz waves can be generated with continuously tunable ellipticity and orientation. This high degree of tunability arises from the fourth-rank tensor of the third-order nonlinear conductivity, which determines both the amplitude and direction of the coherent injection photocurrent. These findings establish halide perovskites as a versatile solid-state platform for coherent control generation of chiral THz radiation, opening new avenues for polarization-sensitive THz photonic technologies.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"146 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alessandro R. Mazza, Jia Shi, Gabriel A. Vázquez-Lizardi, Sangsoo Kim, Jackson Bentley, An-Hsi Chen, Kim Kisslinger, Debarghya Mallick, Qiangsheng Lu, T. Zac Ward, Vitalii Starchenko, Nicholas Cucciniello, Robert G. Moore, Gyula Eres, Yue Cao, Debangshu Mukherjee, Liam Collins, Christopher Nelson, Danielle Reifsnyder Hickey, Fei Xue, Matthew Brahlek
Quantum Materials
量子材料
{"title":"Nucleation and Antiphase Twin Control in Bi2Se3 via Step-Terminated Al2O3 Substrates (Adv. Funct. Mater. 22/2026)","authors":"Alessandro R. Mazza, Jia Shi, Gabriel A. Vázquez-Lizardi, Sangsoo Kim, Jackson Bentley, An-Hsi Chen, Kim Kisslinger, Debarghya Mallick, Qiangsheng Lu, T. Zac Ward, Vitalii Starchenko, Nicholas Cucciniello, Robert G. Moore, Gyula Eres, Yue Cao, Debangshu Mukherjee, Liam Collins, Christopher Nelson, Danielle Reifsnyder Hickey, Fei Xue, Matthew Brahlek","doi":"10.1002/adfm.74600","DOIUrl":"https://doi.org/10.1002/adfm.74600","url":null,"abstract":"<b>Quantum Materials</b>","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"83 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147466071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Strain-stiffening is a natural phenomenon exhibited by biopolymer networks that constitute soft tissue and cellular cytoskeleton. This unique mechanical property of biopolymers is a consequence of their inherent semi-flexibility and the network architecture that controls its interconnectivity. Often at large strains, the network microstructure becomes increasingly important in regulating the mechanical behavior of biomaterials. Synthetic polymer chains that are flexible in nature, fail to stiffen in response to large strains, and therefore, replicating strain-stiffening behavior in synthetic polymer networks is often challenging. This review highlights various aspects of strain-stiffening in synthetic polymer networks. From discussing the origin of strain-stiffening in biopolymers, to evaluating the network framework of strain-stiffening synthetic materials, to critically reviewing their aptness as potential biomaterials, this review addresses various challenges that persist for the successful transition of synthetic strain-stiffening materials to next-generation biomimetic materials.
{"title":"Strain-Stiffening Polymer Networks as Advanced Biomimetic Materials","authors":"Kuljeet Kaur","doi":"10.1002/adfm.202532202","DOIUrl":"https://doi.org/10.1002/adfm.202532202","url":null,"abstract":"Strain-stiffening is a natural phenomenon exhibited by biopolymer networks that constitute soft tissue and cellular cytoskeleton. This unique mechanical property of biopolymers is a consequence of their inherent semi-flexibility and the network architecture that controls its interconnectivity. Often at large strains, the network microstructure becomes increasingly important in regulating the mechanical behavior of biomaterials. Synthetic polymer chains that are flexible in nature, fail to stiffen in response to large strains, and therefore, replicating strain-stiffening behavior in synthetic polymer networks is often challenging. This review highlights various aspects of strain-stiffening in synthetic polymer networks. From discussing the origin of strain-stiffening in biopolymers, to evaluating the network framework of strain-stiffening synthetic materials, to critically reviewing their aptness as potential biomaterials, this review addresses various challenges that persist for the successful transition of synthetic strain-stiffening materials to next-generation biomimetic materials.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"243 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147466109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical analog spatial differentiation, as the core mathematical operation in optical computing, can realize real-time edge detection in image processing and efficient feature extraction in data compression. Although analog spatial differential operations have been implemented in various optical systems, they still suffer from complex structural parameters dependency and a typically limited numerical aperture (NA) of smaller than 0.5. To date, achieving simultaneous first- and second-order spatial differentiation with NA higher than 0.5 remains an unresolved challenge, even considering recent advances in metasurface-based analog computing. Here, we propose a synergistic mechanism combining critical coupling and near-far-field multi-wave superposition to simultaneously achieve ultra-high-NA analog spatial first- and second-order differentiation. Operating in two orthogonal polarization modes, numerical simulations indicate that the maximum angle of incidence can reach 89.9°, corresponding to an NA approaching unity and yielding a spatial resolution limit of 1.27λ. Experimentally, the maximum incident angle achieved is 75°, corresponding to an NA of 0.966 and a spatial resolution limit of 1.3λ. We also propose the theoretical imaging resolution limit Δ(NA, λ) for edge detection. Our strategy significantly expands analog spatial computing to the non-paraxial region, which is pivotal in the upcoming high-speed communication, and can benefit future multifunctional terahertz imaging, computational analysis, medical diagnostics, and machine vision.
{"title":"Multifunctional Ultra-Wide-Angle Spatial Optical Analog Computing in the Terahertz Regime","authors":"Yongliang Liu, Bo Yu, Lesiqi Yin, Wenwei Liu, Qi Liu, Yifei Xu, Minghui Deng, Zhancheng Li, Cheng Gong, Hua Cheng, Shuqi Chen","doi":"10.1002/adfm.202530981","DOIUrl":"https://doi.org/10.1002/adfm.202530981","url":null,"abstract":"Optical analog spatial differentiation, as the core mathematical operation in optical computing, can realize real-time edge detection in image processing and efficient feature extraction in data compression. Although analog spatial differential operations have been implemented in various optical systems, they still suffer from complex structural parameters dependency and a typically limited numerical aperture (NA) of smaller than 0.5. To date, achieving simultaneous first- and second-order spatial differentiation with NA higher than 0.5 remains an unresolved challenge, even considering recent advances in metasurface-based analog computing. Here, we propose a synergistic mechanism combining critical coupling and near-far-field multi-wave superposition to simultaneously achieve ultra-high-NA analog spatial first- and second-order differentiation. Operating in two orthogonal polarization modes, numerical simulations indicate that the maximum angle of incidence can reach 89.9°, corresponding to an NA approaching unity and yielding a spatial resolution limit of 1.27λ. Experimentally, the maximum incident angle achieved is 75°, corresponding to an NA of 0.966 and a spatial resolution limit of 1.3λ. We also propose the theoretical imaging resolution limit Δ(NA, λ) for edge detection. Our strategy significantly expands analog spatial computing to the non-paraxial region, which is pivotal in the upcoming high-speed communication, and can benefit future multifunctional terahertz imaging, computational analysis, medical diagnostics, and machine vision.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"20 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147466110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：