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High-Performance Flexible Strain Sensors: The Role of In-Situ Cross-Linking and Interface Engineering in Liquid Metal–Carbon Nanotube-PDMS Composites
IF 9.5 2区 材料科学
ACS Applied Materials & Interfaces Pub Date : 2024-12-20 DOI: 10.1021/acsami.4c17983
Jianan Song, Guangxing Huang, Feng Wei, Jiajia Meng, Kan Zhang
{"title":"High-Performance Flexible Strain Sensors: The Role of In-Situ Cross-Linking and Interface Engineering in Liquid Metal–Carbon Nanotube-PDMS Composites","authors":"Jianan Song, Guangxing Huang, Feng Wei, Jiajia Meng, Kan Zhang","doi":"10.1021/acsami.4c17983","DOIUrl":"https://doi.org/10.1021/acsami.4c17983","url":null,"abstract":"The increasing demand for high-performance strain sensors has driven the development of innovative composite systems. This study focused on enhancing the performance of composites by integrating liquid metal, carbon nanotubes, and polydimethylsiloxane (PDMS) in an innovative approach that involved advanced interface engineering, filler synergy, and in situ cross-linking of PDMS in solution. Surface modification of liquid metal with allyl disulfide and hydrogen-containing polydimethylsiloxane significantly improved its stability and dispersion within the polymer matrix. Through in situ cross-linking in solution and subsequent segment rearrangement after solvent evaporation, a continuous filler network was formed within the composite. The composites exhibited enhanced thermal stability, achieving a thermal conductivity of up to 2.13 W/(m·K) while simultaneously attaining a high electrical conductivity of 416 S/cm. The composite demonstrated excellent thermal management capabilities, alongside remarkable mechanical properties, including over 400% elongation at break and a low modulus of 0.587 MPa, even at high filler content. These attributes make the composite highly suitable for flexible strain sensor applications. Notably, the composite demonstrated outstanding strain sensing capabilities, effectively monitoring both human motion and handwriting. This work highlighted the critical roles of interface modification, filler interactions, and in situ cross-linking in achieving significant improvements in thermal, electrical, and sensing performance, thereby advancing the potential applications of flexible electronic materials.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"91 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858223","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}
引用次数: 0
Z-scheme CeO2-TiO2@CNT Heterojunction for Efficient Photoredox Removal of Mix Pollutants (CPF, MB, MO, and RhB)
IF 13.3 2区 材料科学
Small Pub Date : 2024-12-20 DOI: 10.1002/smll.202408850
Deepak Kumar, Ashish Ranjan Sharma, Yogendra Kumar Mishra, Sanjeev Kumar Sharma
{"title":"Z-scheme CeO2-TiO2@CNT Heterojunction for Efficient Photoredox Removal of Mix Pollutants (CPF, MB, MO, and RhB)","authors":"Deepak Kumar, Ashish Ranjan Sharma, Yogendra Kumar Mishra, Sanjeev Kumar Sharma","doi":"10.1002/smll.202408850","DOIUrl":"https://doi.org/10.1002/smll.202408850","url":null,"abstract":"Z-scheme CeO<sub>2</sub>-TiO<sub>2</sub>@CNT (CTC) heterojunction is fabricated using hydrothermal method and evaluated for removing mixed pollutants (MIX-P) from ciprofloxacin (CPF) and textile contaminations. CTC demonstrated ≈99% removal efficiency against MIX-P under solar irradiation of ≈10<sup>5</sup> lumens. High removal efficiency of CTC is attributed to reduced bandgap (<i>E<sub>g</sub></i>), 2.65 eV, and high specific surface area (68.193 m<sup>2</sup> g<sup>−1</sup>). Lower <i>E<sub>g</sub></i> extends light absorption that generates more charge carriers and reactive species, RS (<sup>•</sup>O<sub>2</sub><sup>−</sup>, h<sup>+</sup>, <sup>•</sup>OH), to facilitate the photocatalytic removal process. These RS are confirmed through trapping experiments using IPA, N<sub>2</sub>, and KI. Binding energies of 282.5, 283.7, and 285 eV, corresponding to Ti─C, Ti─O─C, and Ce─C bondings, indicated coupling of TiO<sub>2</sub>, CeO<sub>2</sub>, and CNT within the CTC structure. Ionic and pH tests confirmed lower photocatalytic efficiency of CTC in an alkaline environment. Photocurrent density and EIS measurements provide insights into the charge carrier dynamics, while HPLC-MS analysis offered information on degradation pathway and identification of intermediates in the removal process. DFT studies confirmed the adjustments in electronic states, structural modifications, and band alignments in agreement with experimental results. This study highlights the potential of CTC as highly effective catalyst for sustainable removal of mixed pollutants from wastewater.","PeriodicalId":228,"journal":{"name":"Small","volume":"10 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857584","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}
引用次数: 0
BEOL Three-Dimensional Stackable Oxide Semiconductor CMOS Inverter with a High Voltage Gain of 233 at Cryogenic Temperatures
IF 10.8 1区 材料科学
Nano Letters Pub Date : 2024-12-20 DOI: 10.1021/acs.nanolett.4c04701
Yiyuan Sun, Ying Xu, Zijie Zheng, Yuxuan Wang, Yuye Kang, Kaizhen Han, Wei Shi, Jinyong Wang, Xiao Gong
{"title":"BEOL Three-Dimensional Stackable Oxide Semiconductor CMOS Inverter with a High Voltage Gain of 233 at Cryogenic Temperatures","authors":"Yiyuan Sun, Ying Xu, Zijie Zheng, Yuxuan Wang, Yuye Kang, Kaizhen Han, Wei Shi, Jinyong Wang, Xiao Gong","doi":"10.1021/acs.nanolett.4c04701","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04701","url":null,"abstract":"Targeting high-performance computing at cryogenic temperatures, we report back-end-of-line (BEOL)-compatible p-type Te-TeO<sub><i>x</i></sub> field effect transistors (FETs) deposited using a sputtering method that is cost-effective, large-scale manufacturable, and highly controllable. Combined with the indium tin oxide channel n-FETs employing a common gate and HfO<sub>2</sub> gate dielectric, BEOL three-dimensional stackable oxide semiconductor complementary metal oxide semiconductor (CMOS) inverters were further realized, demonstrating excellent threshold voltage matching, with a high voltage gain of 132 with a 2 V supply voltage (<i>V</i><sub>DD</sub>) at room temperature. At cryogenic temperatures, the CMOS inverter exhibits significantly enhanced performance, achieving a voltage gain of 233 at a <i>V</i><sub>DD</sub> of 2 V with a wide noise margin of 86%. Even at an ultralow <i>V</i><sub>DD</sub> of 0.5 V, the CMOS inverter maintains solid performance with an exceptionally low power consumption of &lt;60 pW.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"56 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857668","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}
引用次数: 0
Metal–organic framework-based nanoplatforms for synergistic anti-atherosclerosis therapy by regulating the PI3K/AKT/MSR1 pathway in macrophages
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2024-12-20 DOI: 10.1039/d4nr04058a
Chenlin Zeng, Zhiyou Peng, Sida Huang, Zhijue Xu, Zhaoxi Peng, Zhaoyu Wu, Jiahao Lei, Xing Zhang, Jinbao Qin, Kaichuang Ye, Bo Li, Zhen Zhao, Ying Pan, Minyi Yin, Xinwu Lu
{"title":"Metal–organic framework-based nanoplatforms for synergistic anti-atherosclerosis therapy by regulating the PI3K/AKT/MSR1 pathway in macrophages","authors":"Chenlin Zeng, Zhiyou Peng, Sida Huang, Zhijue Xu, Zhaoxi Peng, Zhaoyu Wu, Jiahao Lei, Xing Zhang, Jinbao Qin, Kaichuang Ye, Bo Li, Zhen Zhao, Ying Pan, Minyi Yin, Xinwu Lu","doi":"10.1039/d4nr04058a","DOIUrl":"https://doi.org/10.1039/d4nr04058a","url":null,"abstract":"Atherosclerosis is the main pathogenic factor of various cardiovascular diseases. During the pathogenesis of atherosclerosis, macrophages play a major role, mainly by secreting pro-inflammatory cytokines and taking in lipids to form foam cells. Thiamine pyrophosphate (TPP) is an antagonist of the P2Y6 receptor, which is overexpressed on macrophages during atherosclerosis and facilitates the lipid phagocytosis of macrophages. However, the excessive accumulation of TPP may interfere with some vital metabolic processes like the tricarboxylic acid cycle, oxidative phosphorylation and the pentose phosphate pathway. Herein, we designed and constructed a nanoparticle ZIF-8@TPP for the treatment of atherosclerosis. The as-established ZIF-8@TPP nanoplatform exhibited specific cytotoxicity towards macrophages <em>in vitro.</em> Meanwhile, histological analysis confirmed the excellent therapeutic efficacy of ZIF-8@TPP <em>in vivo.</em> Mechanistic studies indicated that ZIF-8@TPP potentially lowered lipid phagocytosis and lipid metabolism of macrophages <em>via</em> the PI3K/AKT/MSR1 pathway. This study also demonstrated that the anti-atherosclerotic effect of TPP was enhanced after combination with a prototypical metal–organic framework (MOF), ZIF-8. This synergistic controlled-release drug delivery system may provide a novel idea for anti-atherosclerosis therapy by combining reagents that can inhibit lipid phagocytosis of macrophages with MOFs.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"22 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Monodisperse Pt nanoparticle arrays via block copolymer nanopatterning and their reaction kinetics on CO oxidation
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2024-12-20 DOI: 10.1039/d4nr03582h
Geon Gug Yang, Hyeong Min Jin, Minsu Park, Minha Kim, Dong-Wook Shin, Sang Ouk Kim, WooChul Jung, Siwon Lee
{"title":"Monodisperse Pt nanoparticle arrays via block copolymer nanopatterning and their reaction kinetics on CO oxidation","authors":"Geon Gug Yang, Hyeong Min Jin, Minsu Park, Minha Kim, Dong-Wook Shin, Sang Ouk Kim, WooChul Jung, Siwon Lee","doi":"10.1039/d4nr03582h","DOIUrl":"https://doi.org/10.1039/d4nr03582h","url":null,"abstract":"Advances in nanotechnology are able to open up new prospects for catalysis, particularly through the development of catalytic systems featuring precisely controlled size and distribution of metal nanoparticles. In this study, we prepared a model catalytic system, where monodisperse Pt nanoparticles, approximately 8 nm in size, were uniformly distributed onto CeO<small><sub>2</sub></small> and SiO<small><sub><em>x</em></sub></small>/Si substrates <em>via</em> block copolymer (BCP) nanopatterning. To address the validity of these catalysts, we conducted a case study on CO oxidation in a continuous flow reactor, investigated the reaction kinetics, and compared our observations with those reported in the literature. The reaction orders for CO and O<small><sub>2</sub></small>, activation energy, and turnover frequency values on these catalysts were in good agreement with those with well-established kinetic data, demonstrating consistency and reliability. These results suggest a potential application of the BCP-nanopatterned catalyst as a model system for fundamental studies in various catalytic processes.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"64 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Grain growth stagnation at 525 °C by nanoparticles in a solid-state additively manufactured Mg-4Y-3RE alloy
IF 17.6 1区 材料科学
Journal of Magnesium and Alloys Pub Date : 2024-12-20 DOI: 10.1016/j.jma.2024.12.010
Xingjian Zhao, Daniel Olden, Brady Williams, Abhishek Pariyar, Dalong Zhang, Matthew Murphy, Philippa Reed, Paul Allison, Brian Jordon, Jiahui Qi, W. Mark Rainforth, Dikai Guan
{"title":"Grain growth stagnation at 525 °C by nanoparticles in a solid-state additively manufactured Mg-4Y-3RE alloy","authors":"Xingjian Zhao, Daniel Olden, Brady Williams, Abhishek Pariyar, Dalong Zhang, Matthew Murphy, Philippa Reed, Paul Allison, Brian Jordon, Jiahui Qi, W. Mark Rainforth, Dikai Guan","doi":"10.1016/j.jma.2024.12.010","DOIUrl":"https://doi.org/10.1016/j.jma.2024.12.010","url":null,"abstract":"Ultrafine-grained (UFG) materials exhibit high strengths due to grain boundary strengthening, but grains can grow rapidly if post heat treatment is required, making it challenging to achieve grain boundary and precipitation strengthening simultaneously. Grain growth stagnation at 525 °C (0.87 T<sub>m</sub>, melting point) was observed in a Mg-4Y-3RE alloy fabricated by additive friction stir deposition (AFSD), a novel solid-state additive manufacturing technology. The AFSD processing produced a UFG microstructure and two major second phases, Mg<sub>41</sub>RE<sub>5</sub> and nanoparticles containing Y and O. After solid solution treatment (SST) at 525 °C for 72 h, no noticeable grain growth occurred. While Mg<sub>41</sub>RE<sub>5</sub> particles dissolved into the matrix within 4 h of SST, the nanoparticles remained stable and unaltered. The observed grain growth stagnation is attributed to Zener pinning by these thermally stable nanoparticles. These new findings offer a novel approach to designing UFG materials with exceptional thermal stability for high-temperature applications.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"64 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857838","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}
引用次数: 0
Determination of α-(Cu, Sn) in bronze area in fabrication of Nb3Sn superconductor
IF 6.2 2区 材料科学
Journal of Alloys and Compounds Pub Date : 2024-12-20 DOI: 10.1016/j.jallcom.2024.178231
Zerong Zhang, Zhan Gao, Yanan Wang, Junsheng Cheng, Qiuliang Wang
{"title":"Determination of α-(Cu, Sn) in bronze area in fabrication of Nb3Sn superconductor","authors":"Zerong Zhang, Zhan Gao, Yanan Wang, Junsheng Cheng, Qiuliang Wang","doi":"10.1016/j.jallcom.2024.178231","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.178231","url":null,"abstract":"With the advancement in superconducting magnet technology, Nb<sub>3</sub>Sn has emerged as the preferred choice for applications requiring high magnetic field. Moreover, Cu-Sn alloy is thought to be the primary material used to prepare Nb<sub>3</sub>Sn superconductor. And Sn chemical potential (or Sn activity) could significantly affect the formation and the microstructure of Nb<sub>3</sub>Sn superconductor. However, insufficient studies were conducted thus far on solid-state reactions and phase transformation in the bronze area, making it challenging to systematically analyze the influence of Sn activity on the preparation of Nb<sub>3</sub>Sn. Therefore, in this work, Nb<sub>3</sub>Sn superconductors and Cu-Sn alloys were simultaneously prepared by powder metallurgy method. In addition, the phase constitutes and microstructures in bronze area, as well as the superconducting properties of Nb<sub>3</sub>Sn superconductors, were thoroughly investigated. The results indicated that α-(Cu, Sn) solid solution could be formed during heat treatment in both of the Nb-Sn-Cu and Cu-Sn samples. Furthermore, with the same composition ratio of Sn to Cu in the precursors, the α-(Cu, Sn) solid solution in Nb-Sn-Cu samples possessed a lower Sn content than that the Cu-Sn samples because part of Sn was consumed in the reaction with Nb. Additionally, among the Nb-Sn-Cu samples, the sample with the composition of Nb:Sn:Cu = 3:1:9.5<!-- --> <!-- -->at.% exhibited the thickest Nb<sub>3</sub>Sn layer and the best superconducting performance due to the highest Sn activity in bronze area.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"104 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857845","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}
引用次数: 0
Enhancement of Piezoelectric and Ferroelectric Response via Tunning of Relaxor and Anti-Ferroelectrics: Insights from Poling Study
IF 6.2 2区 材料科学
Journal of Alloys and Compounds Pub Date : 2024-12-20 DOI: 10.1016/j.jallcom.2024.178227
Ranjan Kumar Sahu, Saket Asthana
{"title":"Enhancement of Piezoelectric and Ferroelectric Response via Tunning of Relaxor and Anti-Ferroelectrics: Insights from Poling Study","authors":"Ranjan Kumar Sahu, Saket Asthana","doi":"10.1016/j.jallcom.2024.178227","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.178227","url":null,"abstract":"The article presents a strategy to boost the electromechanical properties of Ti-based solid solutions with the NN antiferroelectric phase. Effect of NN on structural, dielectric, electric field reliant (the poling field (<em>E</em><sub><em>P</em></sub>) from 10 to 50<!-- --> <!-- -->kV/cm) piezoelectric coefficient (<em>d</em><sub><em>33</em></sub>), electromechanical coupling constant (<em>k</em><sub><em>p</em></sub>), polarization, and strain properties were thoroughly investigated. The microstructural analysis highlighted that an optimal grain size distribution and phase purity are crucial for achieving superior piezoelectric performance. Notably, when the NN content reached 0.2<!-- --> <!-- -->mol (2 NN), the NKBT ceramics exhibited exceptional electrical properties, including a dielectric constant of approximately 3727, a dielectric loss (<em>tanδ</em>) of 0.0228 at 100<!-- --> <!-- -->kHz, and a high remanent polarization (<em>P</em><sub><em>r</em></sub>) of 60 μC/cm². Our findings also revealed optimized poling parameters at <em>E</em><sub><em>P</em></sub> = 50<!-- --> <!-- -->kV/cm, yielding a high piezoelectric coefficient of 132 pC/N and the electromechanical coupling factors of 0.43 (<em>k</em><sub><em>p</em></sub>) in 2 NN with a high dielectric constant of ≈ 3644, a dielectric loss (tanδ) of 0.0299 in 100<!-- --> <!-- -->kHz frequency. Moreover, a significantly large recoverable energy storage density of 0.512<!-- --> <!-- -->J/cm³ was observed in 1 NN at a moderate electric field of approximately 98<!-- --> <!-- -->kV/cm. This approach to enhancing insulating properties through NN modification has likely advanced our understanding of improving material properties for designing high-performance NKBT-based materials appropriate for sensors as well as energy harvesting requests in lead-free ferroelectrics<em>.</em>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"28 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857846","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}
引用次数: 0
Guided and Space Waves Multiplexed Metasurface for Advanced Electromagnetic Functionalities in Microwave Region
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2024-12-20 DOI: 10.1002/adma.202417724
Chunsheng Guan, Tong Cai, Lei Zhu, Jianqiao Han, Chang Ding, Shah Nawaz Burokur, Qun Wu, Xumin Ding
{"title":"Guided and Space Waves Multiplexed Metasurface for Advanced Electromagnetic Functionalities in Microwave Region","authors":"Chunsheng Guan, Tong Cai, Lei Zhu, Jianqiao Han, Chang Ding, Shah Nawaz Burokur, Qun Wu, Xumin Ding","doi":"10.1002/adma.202417724","DOIUrl":"https://doi.org/10.1002/adma.202417724","url":null,"abstract":"Nowadays, metasurfaces have attracted considerable attention due to their promising and advanced control of electromagnetic (EM) waves. However, it is still challenging to shape guided waves into desired free-space mode, while simultaneously manipulating spatial incident waves using a single metasurface. Herein, a class of metasurfaces capable of multiplexing guided and space waves is proposed to achieve advanced EM functionalities in microwave regions, which can find great application potentials in radar systems, wireless communications, and wireless power transfer (WPT). The proposed metasurface, composed of specially designed meta-atoms with polarization-dependent radiation and reflection properties, provides the capability to fully manipulate complex amplitude of guided waves and reflection phase of space incident wave independently and simultaneously, thus enabling arbitrary radiation and reflection functionalities without encountering crosstalk issues. As examples of potential applications, three advanced EM functionalities operating in both far-field and near-field regions are presented: low-sidelobe microwave antenna with reduced radar cross section (RCS), multifunctional WPT, and feed multiplexed holograms, respectively. The far-field characteristics of the low sidelobe level antennas showing radiated beams at ± 30° together with RCS reduction under arbitrarily polarized incidences are validated by both simulations and measurements. A good agreement between experiments and simulations is also observed for the near-field intensity distribution of the hologram, which further validates the feasibility of near-field shaping. The findings significantly expand the capabilities of metasurfaces in manipulating EM waves and stimulate advanced multifunctional metadevices facing more challenging and diversified application demands.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"113 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858066","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}
引用次数: 0
Expandable Fast Li-Ion Diffusion Network of Li-Rich Mn-Based Oxides via Single-Layer LiCo(Ni)O2 Segregation
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2024-12-20 DOI: 10.1002/adma.202414786
Yali Yang, Tie Luo, Yuxuan Zuo, Hangchao Wang, Chuan Gao, Junfei Cai, Tonghuan Yang, Wukun Xiao, Yue Yu, Dingguo Xia
{"title":"Expandable Fast Li-Ion Diffusion Network of Li-Rich Mn-Based Oxides via Single-Layer LiCo(Ni)O2 Segregation","authors":"Yali Yang, Tie Luo, Yuxuan Zuo, Hangchao Wang, Chuan Gao, Junfei Cai, Tonghuan Yang, Wukun Xiao, Yue Yu, Dingguo Xia","doi":"10.1002/adma.202414786","DOIUrl":"https://doi.org/10.1002/adma.202414786","url":null,"abstract":"Li-rich Mn-based cathode materials exhibit a remarkable reversible specific capacity exceeding 250 mAh g<sup>−1</sup>, positioning them as the preferred choice for the next generation of high-energy density lithium-ion battery cathode materials. However, their inferior rate and cycling performance pose significant challenges. In this context, a Li-rich material incorporating an expanded fast Li-ion diffusion network has been successfully synthesized. This advancement involves the introduction of a single-layer of LiCo(Ni)O<sub>2</sub> with high Li-ion diffusion coefficients into the crystal structure of Li-rich cathode, thereby enhancing the rate performance, achieving an impressive capacity of 212 mAh g<sup>−1</sup> at 5 C. Furthermore, the single-layer LiCo(Ni)O<sub>2</sub> can effectively isolates Li<sub>2</sub>MnO<sub>3</sub> phase domains, thereby enhancing the structural stability during the anion redox process, consequently extending the electrochemical stability limits. Operating within a voltage range of 2.1–4.6 V, the capacity retention reaches 80% after 400 cycles, with a voltage decay of merely 0.74 mV per cycle. This innovative utilization of an expanded fast Li-ion diffusion network provides invaluable insights that will guide the development of strategies aimed at unlocking rate capability in layered oxide cathode materials.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"14 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858196","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}
引用次数: 0
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