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Recyclable Printed Liquid Metal Composite for Underwater Stretchable Electronics. 用于水下可拉伸电子设备的可回收印刷液态金属复合材料。
IF 11.1
Small Science Pub Date : 2025-03-31 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400553
Chi-Hyeong Kim, Jinsil Kim, Jiaxin Fan, Meijing Wang, Fabio Cicoira
{"title":"Recyclable Printed Liquid Metal Composite for Underwater Stretchable Electronics.","authors":"Chi-Hyeong Kim, Jinsil Kim, Jiaxin Fan, Meijing Wang, Fabio Cicoira","doi":"10.1002/smsc.202400553","DOIUrl":"10.1002/smsc.202400553","url":null,"abstract":"<p><p>Multifunctional stretchable conductors are crucial components in fully stretchable circuits for wearable bioelectronics. Conductive composites made from liquid metal (LM) fillers and polymer matrices have garnered significant interest due to their high electrical conductivity, adjustable mechanical properties, biocompatibility, and recyclability. Herein, a printable LM composite is developed using a custom-designed block copolymer to ensure electromechanical stability in both wet and dry conditions. The LM composite demonstrates high conductivity (around 10<sup>5</sup> S m<sup>-</sup> <sup>1</sup>), stretchability up to 500%, and maintains stable resistance with cyclic strain ranging from 0 to 50% for over 16 h, in both ambient and aqueous environments. Furthermore, bulk LM is successfully recovered from printed composites using green solvents, supporting the composite's recyclability.</p>","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400553"},"PeriodicalIF":11.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087783/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Methylhydrazine Lone-Pair Engineering for Polar Lead-Free Perovskite Enables Self-Powered X-Ray Detection. 极性无铅钙钛矿甲基肼单对工程实现自供电x射线检测。
IF 11.1
Small Science Pub Date : 2025-03-11 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400508
Ruiqing Li, Jianbo Wu, Zeng-Kui Zhu, Yaru Geng, Xinling Li, Yifei Wang, Bohui Xu, Zheshuai Lin, Junhua Luo
{"title":"Methylhydrazine Lone-Pair Engineering for Polar Lead-Free Perovskite Enables Self-Powered X-Ray Detection.","authors":"Ruiqing Li, Jianbo Wu, Zeng-Kui Zhu, Yaru Geng, Xinling Li, Yifei Wang, Bohui Xu, Zheshuai Lin, Junhua Luo","doi":"10.1002/smsc.202400508","DOIUrl":"10.1002/smsc.202400508","url":null,"abstract":"<p><p>Lead-free A<sub>3</sub>Bi<sub>2</sub>I<sub>9</sub>-type perovskites demonstrate excellent performance in direct X-ray detection owing to their high bulk resistivity and reduced ion migration. However, the reported centrosymmetric A<sub>3</sub>Bi<sub>2</sub>I<sub>9</sub> can only operate with external voltage, inevitably resulting in energy consumption and bulky monolithic circuits, limiting their further development. Herein, exploiting the methylhydrazine (MHy) cation with 2<i>s</i> <sup>2</sup> lone-pair electrons (LPEs), a chiral-polarity perovskite MHy<sub>3</sub>Bi<sub>2</sub>I<sub>9</sub> are obtained and explored its self-powered X-ray detection properties. Where MHy forms the strong hydrogen bond interaction with the inorganic framework, resulting in the asymmetric Bi<sub>2</sub>I<sub>9</sub> unit. Meanwhile, the 2<i>s</i> <sup>2</sup> LPEs contribute to generating MHy dipole moments, leading to spontaneous polarization. On the one hand, spontaneous polarization acts as a driving force to realize the X-ray-generated carriers' separation and transport to acquire self-powered detection ability. On the other hand, the reduced noise current and dark current under zero bias further increase the signal-to-noise ratio and lower the detection limit. Notably, the MHy<sub>3</sub>Bi<sub>2</sub>I<sub>9</sub> single-crystal-based detector displays a considerable sensitivity (106 μC Gy<sup>-1</sup> cm<sup>-2</sup>) and an ultralow detection limit (55 nGy s<sup>-1</sup>) in self-powered mode. Herein, new insights for constructing polar lead-free perovskite and realizing unprecedented A<sub>3</sub>Bi<sub>2</sub>I<sub>9</sub>-type self-powered X-ray detectors are provided.</p>","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400508"},"PeriodicalIF":11.1,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087766/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multifunctional Magnetic Ionic Liquid-Carbon Nanohorn Complexes for Targeted Cancer Theranostics. 用于靶向癌症治疗的多功能磁性离子液体-碳纳米角复合物。
IF 11.1
Small Science Pub Date : 2025-03-03 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400640
Yun Qi, Eijiro Miyako
{"title":"Multifunctional Magnetic Ionic Liquid-Carbon Nanohorn Complexes for Targeted Cancer Theranostics.","authors":"Yun Qi, Eijiro Miyako","doi":"10.1002/smsc.202400640","DOIUrl":"10.1002/smsc.202400640","url":null,"abstract":"<p><p>Establishing a rational and simplified design for nanoparticles that selectively target and eliminate cancer cells is a crucial aspect of cancer treatment. In this study, a new multifunctional nanocomplex is developed based on a photoexothermic carbon nanohorn comprising the magnetic and anticancer ionic liquids 1-butyl-3-methylimidazolium tetrachloroferrate and fluorescent indocyanine green, synthesized through a convenient sonication process. The synthesized nanocomplexes exhibit unique therapeutic, photothermal, magnetic, and fluorescent properties, enabling chemotherapeutic, light-, and magnetic-field-driven cancer theranostics. Furthermore, this nanocomplex demonstrates prolonged water-dispersing stability (7 days), high photothermal conversion efficiency (63%), and remarkable stability under biologically permeable near-infrared laser irradiation. Simple magnetic guidance significantly enhances the accumulation of nanocomplexes at tumor sites, facilitating targeted delivery. In vitro and in vivo studies have demonstrated potent anticancer efficacy, high selective cytotoxicity against cancer cells, and minimal impact on normal tissues. This study represents the first application of magnetic ionic liquids in cancer treatment and provides a valuable platform for advanced nanotheranostics.</p>","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400640"},"PeriodicalIF":11.1,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087772/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
All-Solution-Processable Hybrid Photothermoelectric Sensors with Carbon Nanotube Absorbers and Bismuth Composite Electrodes for Nondestructive Testing. 具有碳纳米管吸收剂和铋复合电极的无损检测全溶液可加工混合光热电传感器。
IF 11.1
Small Science Pub Date : 2025-02-20 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400448
Yuto Matsuzaki, Reiji Tadenuma, Yuto Aoshima, Minami Yamamoto, Leo Takai, Yukito Kon, Daiki Sakai, Norika Takahashi, Ryo Koshimizu, Qi Zhang, Naoko Hagiwara, Meiling Sun, Daiki Shikichi, Raito Ota, Sayaka Hirokawa, Yukio Kawano, Kou Li
{"title":"All-Solution-Processable Hybrid Photothermoelectric Sensors with Carbon Nanotube Absorbers and Bismuth Composite Electrodes for Nondestructive Testing.","authors":"Yuto Matsuzaki, Reiji Tadenuma, Yuto Aoshima, Minami Yamamoto, Leo Takai, Yukito Kon, Daiki Sakai, Norika Takahashi, Ryo Koshimizu, Qi Zhang, Naoko Hagiwara, Meiling Sun, Daiki Shikichi, Raito Ota, Sayaka Hirokawa, Yukio Kawano, Kou Li","doi":"10.1002/smsc.202400448","DOIUrl":"10.1002/smsc.202400448","url":null,"abstract":"<p><p>While photothermoelectric (PTE) sensor sheets are potentially suitable for testing applications, such as nondestructive material identifications in ultrabroad millimeter-wave infrared bands, their device designs have primarily employed a single-material channel. Herein, PTE sensor sheets generally combine photoinduced heating with associated thermoelectric (TE) conversion phenomena, and the employment of a single-material channel regulates device operations by missing opportunities for fully utilizing their fundamental parameters. For this situation, this work develops all-solution-processable and freely coatable (paintable) hybrid PTE sensors by an effective combination of the channel structure with bismuth composite (Bi<sub>com</sub>) TE electrodes (Seebeck coefficient > 100 μV K<sup>-1</sup>) and efficient carbon nanotube film photothermal absorbers. This hybrid PTE sensor device stably forms its TE electrodes as easy-to-handle pastes of Bi<sub>com</sub> material powders with high Seebeck coefficients by effectively employing conductive solvents and surfactants. Following these material and process preparations, the hybrid PTE sensor functions in ultrabroadband regions beyond the conventional detectors with comparable sensitivities to the existing narrowband devices in individual ranges and provides diverse optical measurement opportunities. Indeed, the easy-to-handle device fabrication process and advantageous photodetection performances of the hybrid PTE sensor demonstrate high usability for nondestructive testing applications (noncontact inspections, panoramic 3D camera monitoring, and portable device setups).</p>","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400448"},"PeriodicalIF":11.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087774/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Understanding the Mechanism of Cardiotoxicity Induced by Nanomaterials: A Comprehensive Review. 纳米材料致心脏毒性机制的研究综述。
IF 11.1
Small Science Pub Date : 2025-02-20 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400498
Zaiyong Zheng, Shuang Zhu, Xiaobo Wang, Haoran Wu, Min Fu, Houxiang Hu, Zhanjun Gu, Chunxiang Zhang
{"title":"Understanding the Mechanism of Cardiotoxicity Induced by Nanomaterials: A Comprehensive Review.","authors":"Zaiyong Zheng, Shuang Zhu, Xiaobo Wang, Haoran Wu, Min Fu, Houxiang Hu, Zhanjun Gu, Chunxiang Zhang","doi":"10.1002/smsc.202400498","DOIUrl":"10.1002/smsc.202400498","url":null,"abstract":"<p><p>Nanomaterials have been vastly used in daily life. However, owing to their unique properties, nanomaterials also show potential side effects. Among the various organs affected by nanomaterials, the circulatory system stands out as particularly vulnerable, drawing additional attention to its cardiac toxicity. To address the cardiovascular nanotoxicity and further promote the safe use of nanotechnology, a comprehensive review of the cardiotoxicity induced by nanomaterials is provided. The review begins by identifying the current research trends and hotspots in this field via a bibliometric analysis. Subsequently, based on the objectively obtained research hotspots, the mechanism of cardiovascular nanotoxicity, including exposure route, membrane injury, ion disturbance, oxidative stress, inflammation, and cell death, is reviewed and discussed. Finally, current strategies for the mitigation of nanotoxicity are also proposed. The objective of this review is to assist readers in understanding the mechanism of cardiotoxicity induced by nanomaterials and to facilitate their safe application for human health.</p>","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400498"},"PeriodicalIF":11.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087784/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Edge-Localized Plasmonic Resonances in WS2 Nanostructures from Electron Energy-Loss Spectroscopy. 基于电子能量损失谱的WS2纳米结构边缘定域等离子体共振。
IF 11.1
Small Science Pub Date : 2025-02-13 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400558
Abel Brokkelkamp, Sabrya E van Heijst, Sonia Conesa-Boj
{"title":"Edge-Localized Plasmonic Resonances in WS<sub>2</sub> Nanostructures from Electron Energy-Loss Spectroscopy.","authors":"Abel Brokkelkamp, Sabrya E van Heijst, Sonia Conesa-Boj","doi":"10.1002/smsc.202400558","DOIUrl":"10.1002/smsc.202400558","url":null,"abstract":"<p><p>Localized plasmon resonances in 2D transition metal dichalcogenides (TMDs) offer a powerful means to enhance light-matter interactions at the nanoscale, making them ideal candidates for advanced optoelectronic applications. However, disentangling the complex plasmonic interactions in these materials, especially in the low-energy regime, presents significant challenges. Herein, localized plasmon resonances in chemical vapor deposition-grown tungsten disulfide (WS<sub>2</sub>) nanotriangles, using a combination of advanced spectral analysis and simulation techniques, is investigated. By combining non-negative matrix factorization with electron energy loss spectroscopy, distinct plasmonic modes to provide a comprehensive analysis of the plasmonic landscape of individual and stacked WS<sub>2</sub> nanotriangles are identified and characterized. Furthermore, the dispersion relation of these localized plasmon resonances is quantified and their evolution across different WS<sub>2</sub> triangular geometries is evaluated. Experimental characterization of plasmonic resonances in WS<sub>2</sub> through dedicated numerical simulations based on the pygdm package is validated. The findings highlight the critical role of localized plasmon resonances in modulating the electronic and optical properties of WS<sub>2</sub>, offering new insights into the design and optimization of TMD-based devices for optoelectronic and nanophotonic applications.</p>","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400558"},"PeriodicalIF":11.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087782/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Computational Approaches for Designing Heterostructured Electrocatalysts. 设计异质结构电催化剂的计算方法。
IF 11.1
Small Science Pub Date : 2025-02-11 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400544
Miyeon Kim, Kyu In Shim, Jeong Woo Han
{"title":"Computational Approaches for Designing Heterostructured Electrocatalysts.","authors":"Miyeon Kim, Kyu In Shim, Jeong Woo Han","doi":"10.1002/smsc.202400544","DOIUrl":"10.1002/smsc.202400544","url":null,"abstract":"<p><p>Electrocatalysts for oxidation and reduction reactions are crucial for sustainable energy production and carbon reduction. While precious metal catalysts exhibit superior activity, reducing reliance on them is necessary for large-scale applications. To address this, transition metal-based catalysts are studied with strategies to enhance catalytic performance. One promising strategy is heterostructures, which integrate multiple materials to harness synergistic effects. Developing efficient heterostructured electrocatalysts requires understanding their intricate characteristics, which poses challenges. While <i>in</i>  <i>situ</i> and <i>operando</i> spectroscopy provides insights, computational materials science is essential for capturing reaction mechanisms, analyzing the origins at the atomic scale, and efficiently exploring innovative heterostructures. Despite growing recognition of computational materials science, standardized criteria for these systems remain lacking. This review consolidates case studies to propose approaches for modeling and analyzing heterostructures. It categorizes heterostructure types into vertical, semivertical, and lateral, defines their characteristics, and propose insights into minimizing or exploiting strain effects from lattice mismatches. Furthermore, it summarizes computational analyses of heterostructure stability and activity across reactions, including oxygen evolution, hydrogen evolution, oxygen reduction, carbon dioxide reduction, nitrogen reduction, and urea oxidation. This review provides an overview to refine heterostructure designs and establish a framework for systematic modeling and analysis to develop efficient electrocatalysts.</p>","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400544"},"PeriodicalIF":11.1,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087785/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal Activation and Deactivation of Ni-Doped Ceria Catalysts in CO2 Methanation. ni掺杂铈催化剂在CO2甲烷化中的热活化与失活。
IF 11.1
Small Science Pub Date : 2025-02-06 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400540
Mathias Barreau, Davide Salusso, Jinming Zhang, Michael Haevecker, Detre Teschner, Anna Efimenko, Elisa Borfecchia, Kamil Sobczak, Spyridon Zafeiratos
{"title":"Thermal Activation and Deactivation of Ni-Doped Ceria Catalysts in CO<sub>2</sub> Methanation.","authors":"Mathias Barreau, Davide Salusso, Jinming Zhang, Michael Haevecker, Detre Teschner, Anna Efimenko, Elisa Borfecchia, Kamil Sobczak, Spyridon Zafeiratos","doi":"10.1002/smsc.202400540","DOIUrl":"10.1002/smsc.202400540","url":null,"abstract":"<p><p>Discovered almost 130 years ago by P. Sabatier, CO<sub>2</sub> hydrogenation to methane (CO<sub>2</sub> methanation) is presently attracting attention as one of the most promising methods for storing intermittent renewable energy in the form of chemical fuels. Ni particles supported by CeO<sub>2</sub> constitute a very effective, reliable, and reasonably priced catalyst for CO<sub>2</sub> methanation. Recently a new type of CO<sub>2</sub> methanation catalyst, consisting of cerium oxide (ceria) nanoparticles doped with nickel (NiCeO <sub><i>x</i></sub> ) in a specific square-planar configuration with an extremely high-Ni mass-specific activity and almost 100% CH<sub>4</sub> selectivity, was reported. Here, a 50% enhancement in the CO<sub>2</sub> conversion of the NiCeO <sub><i>x</i></sub> catalyst by carefully adjusting the calcination temperature is demonstrated. Notably, thermal aging at 600 °C enhances methanation performance by partially exsolving Ni to the surface, while higher temperatures (750 °C) lead to larger Ni particles, increased CO production, and surface carbon deposition. Several in situ and operando characterization methods are employed to correlate the thermal activation and deactivation of the catalyst with its nanoscale characteristics. Apart from their clear implications for the design of next-generation Ni-based CO<sub>2</sub> methanation catalysts, these findings significantly enhance understanding of the complex interplay and nature of various surface sites involved in CO<sub>2</sub> hydrogenation.</p>","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400540"},"PeriodicalIF":11.1,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087771/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Kinetic Pathway Control in the Synthesis of Well-Defined Ruthenium Coordination Oligomers. 定义明确的钌配位低聚物合成的动力学途径控制。
IF 11.1
Small Science Pub Date : 2025-02-03 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400504
Tilman Schneider, Florian Seebauer, Frank Würthner, Florian Beuerle
{"title":"Kinetic Pathway Control in the Synthesis of Well-Defined Ruthenium Coordination Oligomers.","authors":"Tilman Schneider, Florian Seebauer, Frank Würthner, Florian Beuerle","doi":"10.1002/smsc.202400504","DOIUrl":"10.1002/smsc.202400504","url":null,"abstract":"<p><p>Ruthenium complexes with 2,2'-bipyridine-6,6'-dicarboxylate (bda) ligands have emerged as highly potent catalysts for water oxidation. In this context, the accumulation of active Ru centers in macrocyclic arrays or coordination oligomers and polymers has proven to be very beneficial for an enhanced stability under operating conditions and to facilitate surface adhesion in heterogeneous systems. For a better insight into structure-activity relationships though, well-defined systems with a precise control over stoichiometry and constitution are highly desired. Herein, the synthesis and characterization of a series of structurally precise and monodisperse linear coordination oligomers [(Ru(bda)) <sub><i>n</i></sub> <i>L</i> <sub><i>n-</i>1</sub> <i>pic</i> <sub>2</sub>] (<i>n</i> = 4 or 5, <i>L</i> = 4,4'-bipyridine or 1,4-bis-(pyridine-4-yl)benzene derivatives, <i>pic</i> = 4-picoline), in excellent purity and yields are reported. Based on detailed mechanistic investigations, a complex network of interconnected and competing reactions is proposed that fully explains both the high overall turnover and the kinetic pathway selection between alternative endcapping and dissociation-elongation sequences.</p>","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400504"},"PeriodicalIF":11.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087777/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dual-Band Metasurface-Based Structured Light Generations for Futuristic Communication Applications. 未来通信应用的双频超表面结构光世代。
IF 11.1
Small Science Pub Date : 2025-02-03 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400524
Muhammad Danial Shafqat, Yujin Park, Nasir Mahmood, Joohoon Kim, Dohyun Kang, Rehan Hafiz, Dongliang Gao, Humberto Cabrera, Muhammad Zubair, Muhammad Qasim Mehmood, Lei Gao, Junsuk Rho
{"title":"Dual-Band Metasurface-Based Structured Light Generations for Futuristic Communication Applications.","authors":"Muhammad Danial Shafqat, Yujin Park, Nasir Mahmood, Joohoon Kim, Dohyun Kang, Rehan Hafiz, Dongliang Gao, Humberto Cabrera, Muhammad Zubair, Muhammad Qasim Mehmood, Lei Gao, Junsuk Rho","doi":"10.1002/smsc.202400524","DOIUrl":"10.1002/smsc.202400524","url":null,"abstract":"<p><p>Structured beams carrying orbital angular momentum carry significant potential for various applications, including optical trapping, manipulations, communications, microscopy, and so on. Among these, perfect vortex (PV) beams are highly attractive due to their immunity to topological charge variations and nondiffracting properties. However, conventional PV beam generation methods typically operate at a single wavelength and rely on bulky components, complicating photonic device integration. To address this, a single-cell-driven, dual-band metasurface platform is experimentally demonstrated to generate nondiffracting PV beams spanning from UV to visible wavelengths (261-405 nm). The proposed metasurfaces, made of rectangular-shaped silicon nitride nanoantennas, achieve an average transmission efficiency of 65% across dual spectrums. Simulated and experimental results show that the metasurfaces maintain topological charge-insensitive ring radii. The findings highlight a novel approach for PV beam generations, which can lead to new categories of ultrathin optical devices for diverse applications, including wireless communication, particle trapping, and biomedical imaging.</p>","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400524"},"PeriodicalIF":11.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087768/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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