High sensitivity and spatial recognition of pressure sensors are important for application of the sensors in electronic skins, and in situ visualization is a practical and effective approach to identifying pressure information. Here, we present a facial strategy to achieve in situ pressure information recognition that is visible to the naked eye in coloring form by designing an H3PO4/PVA film with hemispheric microstructures in an integrated electrochromic pressure sensor. The device can be applied for different stress scenarios within the range of 0-250 kPa by adjusting the spacing of hemispheric microstructures and can identify the magnitude, position, shape, and duration of the pressure. Furthermore, the device can be used repeatedly by erasing under a 1 V bias, and more obvious information can be displayed under strong sunlight compared with light-emitting equipment. This strategy provides new insight into the design of flexible electronics for in situ and instantaneous pressure visualization in the future.
{"title":"Electrochromic Pressure-Sensitive Device for In Situ and Instantaneous Pressure Visualization.","authors":"Chen Chen, Mei-Hua Wang, Meng-Han Zhu, Fu-Xing Zhao, Bang Yu, Qian-Hao Pan, Xin Guo, Si-Zhe Sheng, Zhen He, Jin-Long Wang, Shu-Hong Yu","doi":"10.1021/acs.nanolett.4c05064","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05064","url":null,"abstract":"<p><p>High sensitivity and spatial recognition of pressure sensors are important for application of the sensors in electronic skins, and in situ visualization is a practical and effective approach to identifying pressure information. Here, we present a facial strategy to achieve in situ pressure information recognition that is visible to the naked eye in coloring form by designing an H<sub>3</sub>PO<sub>4</sub>/PVA film with hemispheric microstructures in an integrated electrochromic pressure sensor. The device can be applied for different stress scenarios within the range of 0-250 kPa by adjusting the spacing of hemispheric microstructures and can identify the magnitude, position, shape, and duration of the pressure. Furthermore, the device can be used repeatedly by erasing under a 1 V bias, and more obvious information can be displayed under strong sunlight compared with light-emitting equipment. This strategy provides new insight into the design of flexible electronics for in situ and instantaneous pressure visualization in the future.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":" ","pages":""},"PeriodicalIF":9.6,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595932","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}
Designing and synthesizing multishelled metallic hollow nanostructures with intragaps and porous shells have received widespread attention for enhancing optical and catalytic properties. However, significant challenges remain in engineering these structures at the nanometer scale. Herein, we employed the galvanic replacement reaction (GRR) method to prepare multimetallic hollow superstructures with 3D cavities and distinct nanometer intragaps. By precise control of the intragap distances (1–10 nm) and composition distributions within a single entity, libraries of multimetallic hollow superstructures were constructed. Using the 4-nitrophenol reduction as a model reaction, triple-shell Au@Pt–Ag nanoparticles with approximately 1 nm intragaps exhibited a catalytic rate 211.6 times higher than that of commercial Pt/C catalysts. The nanoconfinement environment of multishelled structures not only increases active sites but also promotes electron delocalization of reactants, accelerating the hydrogenation process both thermodynamically and kinetically. Our work advances the rational synthesis of multishelled nanostructures, expanding their potential applications in catalysis, plasmonics, and biosensing.
{"title":"Nanoscale Engineering of 3D Intragaps and Compositions in Multimetallic Hollow Superstructures for Enhanced Catalysis","authors":"Qianqian Fu, Jingyi Zhou, Xiaoyuan Wang, Wenying Xu, Xiaoli Chen, Liang Chen, Youju Huang","doi":"10.1021/acs.nanolett.4c05403","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05403","url":null,"abstract":"Designing and synthesizing multishelled metallic hollow nanostructures with intragaps and porous shells have received widespread attention for enhancing optical and catalytic properties. However, significant challenges remain in engineering these structures at the nanometer scale. Herein, we employed the galvanic replacement reaction (GRR) method to prepare multimetallic hollow superstructures with 3D cavities and distinct nanometer intragaps. By precise control of the intragap distances (1–10 nm) and composition distributions within a single entity, libraries of multimetallic hollow superstructures were constructed. Using the 4-nitrophenol reduction as a model reaction, triple-shell Au@Pt–Ag nanoparticles with approximately 1 nm intragaps exhibited a catalytic rate 211.6 times higher than that of commercial Pt/C catalysts. The nanoconfinement environment of multishelled structures not only increases active sites but also promotes electron delocalization of reactants, accelerating the hydrogenation process both thermodynamically and kinetically. Our work advances the rational synthesis of multishelled nanostructures, expanding their potential applications in catalysis, plasmonics, and biosensing.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"40 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143598845","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}
Pub Date : 2025-03-11DOI: 10.1021/acs.nanolett.5c00669
Mei-Tsan Kuo, Nigel F. Reuel
In our recently published article, (1) we found a few mistakes in the text and figures that may lead to misinterpretation, and thus, we want to correct them. Page 716 (line 39) of the article: “One of the derivatives of chitosan is trimethyl chitosan (TMC), whose hydroxyl groups are substituted with trimethyl groups. (2)” The correct description and text should be “One of the derivatives of chitosan is trimethyl chitosan (TMC), whose amine groups are quaternized with methyl groups. (2)”Figure 5: For Figure 5, we forgot to include the figure with error bars, which was required by the reviewers. Presented here are the correct figure and caption. Figure 5. kEβ/[SWCNT]Ss of Impranil-TMC@SWCNT sensor at varied [Impranil] and [SWCNT] (Exp A1-A3). The dashed line represents the linear fitting of the data points of [Impranil]/[SWCNT] < 40, and the x-intercept is set as zero. Error bars represent the standard errors of linear regressions in Figures 4(b), S14, and S15. Figure S16: In Figure S16 in the SI, the numbers in the legend are incorrect. Presented here are the correct figure and caption. Figure S16. kEβ/[SWCNT]Ss of Impranil-TMC@SWCNT sensor obtained at varied [Impranil], [SWCNT] and temperatures (Exp A1-A3, B1). Error bars represent the standard errors of linear regressions in Figures 4(b), S14, S15, and S21. The corrections would not affect the drawn conclusions, as they are minor. This article references 2 other publications. This article has not yet been cited by other publications.
{"title":"Correction to “Resolving the Kinetics of Single-Walled Carbon Nanotube–Polyester Polyurethane Nanoparticle Conjugate Fluorescence Sensors toward Polymer Degrading Enzymes”","authors":"Mei-Tsan Kuo, Nigel F. Reuel","doi":"10.1021/acs.nanolett.5c00669","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00669","url":null,"abstract":"In our recently published article, (1) we found a few mistakes in the text and figures that may lead to misinterpretation, and thus, we want to correct them. <b>Page 716 (line 39)</b> of the article: <i>“One of the derivatives of chitosan is trimethyl chitosan (TMC), whose hydroxyl groups are substituted with trimethyl groups.</i> (2)<i>”</i> The correct description and text should be <i>“One of the derivatives of chitosan is trimethyl chitosan (TMC), whose amine groups are quaternized with methyl groups.</i> (2)<i>”</i> <b>Figure 5</b>: For Figure 5, we forgot to include the figure with error bars, which was required by the reviewers. Presented here are the correct figure and caption. Figure 5. <i>k</i><sub>E</sub>β/[SWCNT]<i>S</i><sub>s</sub> of Impranil-TMC@SWCNT sensor at varied [Impranil] and [SWCNT] (Exp A1-A3). The dashed line represents the linear fitting of the data points of [Impranil]/[SWCNT] < 40, and the x-intercept is set as zero. Error bars represent the standard errors of linear regressions in Figures 4(b), S14, and S15. <b>Figure S16</b>: In Figure S16 in the SI, the numbers in the legend are incorrect. Presented here are the correct figure and caption. Figure S16. <i>k</i><sub>E</sub>β/[SWCNT]<i>S</i><sub>s</sub> of Impranil-TMC@SWCNT sensor obtained at varied [Impranil], [SWCNT] and temperatures (Exp A1-A3, B1). Error bars represent the standard errors of linear regressions in Figures 4(b), S14, S15, and S21. The corrections would not affect the drawn conclusions, as they are minor. This article references 2 other publications. This article has not yet been cited by other publications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"42 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143598848","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}
Pub Date : 2025-03-10DOI: 10.1021/acs.nanolett.4c06631
Tianjiao Hong, Pengfei Tian, Fuzhen Xuan
The organic-inorganic interfacial nanostructures between fillers and the matrix play a crucial role in the performance of polymer composites. Here we propose an in situ cryogenic transmission electron microscope technique (cryo-TEM) approach to directly observe the organic-inorganic interfacial transformation in a toluene diisocyanate (TDI)-based polyurethane composite during its synthesis process. Elliptical protrusions growing radially outward from the filler surface, which serve as the critical intermediate nanostructures of the interface layer, are observed by in situ cryo-TEM, indicating that the interface layer is formed through a curing reaction of the prepolymer molecules anchored on the filler surface. Both decreasing filler sizes and adding coupling agents can enhance the interfacial interactions. The addition of 0.05 wt % coupling agent increases the interface thickness from 83.93 to 129.31 nm and improves the fracture toughness of the composite by 75.1%. These findings provide new insights for rationally designing interfacial nanostructures and high-performance polymer composites.
{"title":"Direct Imaging of the Organic-Inorganic Interfacial Transformation.","authors":"Tianjiao Hong, Pengfei Tian, Fuzhen Xuan","doi":"10.1021/acs.nanolett.4c06631","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06631","url":null,"abstract":"<p><p>The organic-inorganic interfacial nanostructures between fillers and the matrix play a crucial role in the performance of polymer composites. Here we propose an <i>in situ</i> cryogenic transmission electron microscope technique (cryo-TEM) approach to directly observe the organic-inorganic interfacial transformation in a toluene diisocyanate (TDI)-based polyurethane composite during its synthesis process. Elliptical protrusions growing radially outward from the filler surface, which serve as the critical intermediate nanostructures of the interface layer, are observed by <i>in situ</i> cryo-TEM, indicating that the interface layer is formed through a curing reaction of the prepolymer molecules anchored on the filler surface. Both decreasing filler sizes and adding coupling agents can enhance the interfacial interactions. The addition of 0.05 wt % coupling agent increases the interface thickness from 83.93 to 129.31 nm and improves the fracture toughness of the composite by 75.1%. These findings provide new insights for rationally designing interfacial nanostructures and high-performance polymer composites.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":" ","pages":""},"PeriodicalIF":9.6,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595859","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}
We demonstrate a topotactic transformation of zincblende InAs(Sb) nanowires into the Zintl phase Eu5In2As6 through a vapor-solid mutual exchange process involving Eu and In in molecular beam epitaxy. This conversion preserves the polyhedral coordination lattice of the parent InAs(Sb) structure while inducing orthorhombic symmetry in the product phase, Eu5In2As6, of which quasi-one-dimensional [InAs3]6- chains with tetrahedral sites align along the ⟨110⟩ direction of zincblende structure. Local and global magnetic characterization identified two distinct antiferromagnetic phase transitions at approximately 7 and 16 K in Eu5In2As6 nanowires, potentially classified as altermagnetic phases. The versatility of the topotactic conversion of III-V semiconductor nanowires provides a platform for designing functional Zintl materials with tunable magnetic properties, making them promising candidates for spintronic applications.
{"title":"Topotactic Growth of Zintl Phase Eu<sub>5</sub>In<sub>2</sub>As<sub>6</sub> Nanowires with Antiferromagnetic Behavior.","authors":"Man Suk Song, Lothar Houben, Nadav Rothem, Ambikesh Gupta, Shai Rabkin, Beena Kalisky, Haim Beidenkopf, Hadas Shtrikman","doi":"10.1021/acs.nanolett.5c00008","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00008","url":null,"abstract":"<p><p>We demonstrate a topotactic transformation of zincblende InAs(Sb) nanowires into the Zintl phase Eu<sub>5</sub>In<sub>2</sub>As<sub>6</sub> through a vapor-solid mutual exchange process involving Eu and In in molecular beam epitaxy. This conversion preserves the polyhedral coordination lattice of the parent InAs(Sb) structure while inducing orthorhombic symmetry in the product phase, Eu<sub>5</sub>In<sub>2</sub>As<sub>6</sub>, of which quasi-one-dimensional [InAs<sub>3</sub>]<sup>6-</sup> chains with tetrahedral sites align along the ⟨110⟩ direction of zincblende structure. Local and global magnetic characterization identified two distinct antiferromagnetic phase transitions at approximately 7 and 16 K in Eu<sub>5</sub>In<sub>2</sub>As<sub>6</sub> nanowires, potentially classified as altermagnetic phases. The versatility of the topotactic conversion of III-V semiconductor nanowires provides a platform for designing functional Zintl materials with tunable magnetic properties, making them promising candidates for spintronic applications.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":" ","pages":""},"PeriodicalIF":9.6,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595946","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}
Pub Date : 2025-03-10DOI: 10.1021/acs.nanolett.5c00459
Yi-Jing Li, Zhe Sun, Peiyuan Li, Kai Xing, Yuan Chang, Xiumeng Hua, Xiao Chen, Han Mo, Shun Liu, Yixuan Sheng, Yue Zhang, Mengda Xu, Qian Zhao, Ningning Zhang, Jiangping Song
Xenotransplantation offers a transformative solution to the global organ shortage crisis. However, the survival of xenografts remains limited despite various proposed strategies. In this study, we present an endothelial cell protection strategy that extends graft survival through the in situ construction of biomimetic glycan-enriched nanofibers. These biomimetic glycan-enriched molecules specifically target integrin αvβ3 and form a polysaccharide-structured nanofiber network on the vascular endothelial surface. This network protects endothelial cells without compromising their normal physiological functions. The constructed biomimetic glycan-enriched layer significantly increased the xenograft survival by 1.64-fold compared to the untreated groups. This work introduces a novel strategy to enhance the survival of heart xenografts.
{"title":"In Situ Biomimetic Glycocalyx Layer Protects Endothelial Damage in Xenotransplantation","authors":"Yi-Jing Li, Zhe Sun, Peiyuan Li, Kai Xing, Yuan Chang, Xiumeng Hua, Xiao Chen, Han Mo, Shun Liu, Yixuan Sheng, Yue Zhang, Mengda Xu, Qian Zhao, Ningning Zhang, Jiangping Song","doi":"10.1021/acs.nanolett.5c00459","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00459","url":null,"abstract":"Xenotransplantation offers a transformative solution to the global organ shortage crisis. However, the survival of xenografts remains limited despite various proposed strategies. In this study, we present an endothelial cell protection strategy that extends graft survival through the <i>in situ</i> construction of biomimetic glycan-enriched nanofibers. These biomimetic glycan-enriched molecules specifically target integrin α<sub>v</sub>β<sub>3</sub> and form a polysaccharide-structured nanofiber network on the vascular endothelial surface. This network protects endothelial cells without compromising their normal physiological functions. The constructed biomimetic glycan-enriched layer significantly increased the xenograft survival by 1.64-fold compared to the untreated groups. This work introduces a novel strategy to enhance the survival of heart xenografts.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"38 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583041","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}
The hypoxic tumor microenvironment (TME), inadequate penetration depth of Vis/NIR light, and lack of sustaining reactive oxygen species (ROS) production capability of photosensitizers pose significant obstacles to the widespread clinic applications of photodynamic therapy (PDT). Herein, we developed a “persistent type I X-PDT” platform to simultaneously overcome these three limitations. Such a nanoplatform could generate efficient ROS (•OH and O2•–) under X-ray irradiation in both normoxic and hypoxic environments. The ROS production persists in tumor cells for more than 4 h, even after the X-ray source is removed. Notably, the persistent type I X-PDT does not increase the levels of hypoxia-inducible factor-1 alpha (HIF-1α) and vascular endothelial growth factor (VEGF) in tumor cells both in vitro and in vivo. Moreover, to further enhance the radiotherapy efficacy in hypoxic conditions, a Pt (IV) prodrug was also introduced, which can be reduced to cisplatin selectively in tumor cells, functioning not only as a chemodrug but also as a radiosensitizer.
{"title":"X-ray Induced Persistent Type I Photodynamic Therapy with Enhanced Hypoxia Tolerance and Chemoradiotherapy","authors":"Wei Cheng, Shuai He, Qiushui Chen, Xiaorong Song, Chunhua Lu, Huanghao Yang","doi":"10.1021/acs.nanolett.5c00433","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00433","url":null,"abstract":"The hypoxic tumor microenvironment (TME), inadequate penetration depth of Vis/NIR light, and lack of sustaining reactive oxygen species (ROS) production capability of photosensitizers pose significant obstacles to the widespread clinic applications of photodynamic therapy (PDT). Herein, we developed a “persistent type I X-PDT” platform to simultaneously overcome these three limitations. Such a nanoplatform could generate efficient ROS (<sup>•</sup>OH and O<sub>2</sub><sup>•–</sup>) under X-ray irradiation in both normoxic and hypoxic environments. The ROS production persists in tumor cells for more than 4 h, even after the X-ray source is removed. Notably, the persistent type I X-PDT does not increase the levels of hypoxia-inducible factor-1 alpha (HIF-1α) and vascular endothelial growth factor (VEGF) in tumor cells both <i>in vitro</i> and <i>in vivo</i>. Moreover, to further enhance the radiotherapy efficacy in hypoxic conditions, a Pt (IV) prodrug was also introduced, which can be reduced to cisplatin selectively in tumor cells, functioning not only as a chemodrug but also as a radiosensitizer.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"31 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583039","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}
Pub Date : 2025-03-10DOI: 10.1021/acs.nanolett.4c05699
Talisi E. Meyer, Ching Chun Peng, Cheng-Yin Lin, Thomas J. Ugras, Zixiao Shi, Andrew Zhao, David A. Muller, Richard D. Robinson
High-entropy semiconducting nanocrystals involving the random incorporation of five or more metals within a single, disordered lattice are receiving significant research interest as catalytic materials. Among these, high-entropy sulfide (HES) nanocrystals demonstrate potential as electrocatalysts but have been slower to gain research interest compared to other high-entropy systems due to the complications introduced by multistep, high-temperature synthesis techniques and the issues of material stability during performance. In this work, we report a simple, reproducible, and scalable HES synthesis to produce star-like nanocrystals. The HES nanocrystals show promise as electrocatalysts with high stability by maintaining a uniform overpotential within 1.5% of the initial value for over 2,200 cycles while rotating, with values as low as 313 mV at 10 mA/cm2 for the oxygen evolution reaction (OER) in alkaline media. Our work provides a low-temperature, colloidal method in the formation of highly complex, phase-pure thiospinel high-entropy sulfide nanocrystals.
{"title":"Colloidal Synthesis of Thiospinel High-Entropy Sulfide Star-like Nanocrystals with High Cycling Stability for the Oxygen Evolution Reaction","authors":"Talisi E. Meyer, Ching Chun Peng, Cheng-Yin Lin, Thomas J. Ugras, Zixiao Shi, Andrew Zhao, David A. Muller, Richard D. Robinson","doi":"10.1021/acs.nanolett.4c05699","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05699","url":null,"abstract":"High-entropy semiconducting nanocrystals involving the random incorporation of five or more metals within a single, disordered lattice are receiving significant research interest as catalytic materials. Among these, high-entropy sulfide (HES) nanocrystals demonstrate potential as electrocatalysts but have been slower to gain research interest compared to other high-entropy systems due to the complications introduced by multistep, high-temperature synthesis techniques and the issues of material stability during performance. In this work, we report a simple, reproducible, and scalable HES synthesis to produce star-like nanocrystals. The HES nanocrystals show promise as electrocatalysts with high stability by maintaining a uniform overpotential within 1.5% of the initial value for over 2,200 cycles while rotating, with values as low as 313 mV at 10 mA/cm<sup>2</sup> for the oxygen evolution reaction (OER) in alkaline media. Our work provides a low-temperature, colloidal method in the formation of highly complex, phase-pure thiospinel high-entropy sulfide nanocrystals.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"68 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583037","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}
Pub Date : 2025-03-10DOI: 10.1021/acs.nanolett.5c00432
Xuefei Li, Feiyue Ge, Chi Zhang, Jiaxin Wei, Ying Wang, Ya-Min Li, Xinrui Zhu, Wei Zhang, Xue-Jun Wu, Li Zhai, Bin Zhai
High-level control over the surface and interface of II-VI heterostructures is crucial for enhancing charge separation and optimizing active sites, thus improving photocatalytic performance. However, due to variations in surface energy and atomic arrangement among different crystal facets, achieving selective growth of specific facets remains a significant challenge. Herein, we have achieved the selective growth of CdSe or ZnSe dots on the lateral facets or basal facets of two-dimensional CdS or ZnS nanoplates by carefully selecting Se source precursors with different reaction activities. The lateral-ZnSe/CdS exhibit enhanced activity for photocatalytic hydrogen evolution compared to that of basal-ZnSe/CdS, attributed to the high exposure ratio of the basal facets and the effective modulation of photoinduced electron-hole pairs at the lateral-ZnSe/CdS interfaces. This work expands the structural diversity of II-VI heterostructures and also provides a viable strategy to enhance their photocatalytic performance by tailoring the surface and interface structures.
{"title":"Facet-Selective Growth of Dots-on-Plate II-VI Heterostructures for Efficient Photocatalytic Hydrogen Evolution.","authors":"Xuefei Li, Feiyue Ge, Chi Zhang, Jiaxin Wei, Ying Wang, Ya-Min Li, Xinrui Zhu, Wei Zhang, Xue-Jun Wu, Li Zhai, Bin Zhai","doi":"10.1021/acs.nanolett.5c00432","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00432","url":null,"abstract":"<p><p>High-level control over the surface and interface of II-VI heterostructures is crucial for enhancing charge separation and optimizing active sites, thus improving photocatalytic performance. However, due to variations in surface energy and atomic arrangement among different crystal facets, achieving selective growth of specific facets remains a significant challenge. Herein, we have achieved the selective growth of CdSe or ZnSe dots on the lateral facets or basal facets of two-dimensional CdS or ZnS nanoplates by carefully selecting Se source precursors with different reaction activities. The lateral-ZnSe/CdS exhibit enhanced activity for photocatalytic hydrogen evolution compared to that of basal-ZnSe/CdS, attributed to the high exposure ratio of the basal facets and the effective modulation of photoinduced electron-hole pairs at the lateral-ZnSe/CdS interfaces. This work expands the structural diversity of II-VI heterostructures and also provides a viable strategy to enhance their photocatalytic performance by tailoring the surface and interface structures.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":" ","pages":""},"PeriodicalIF":9.6,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595940","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}
Pub Date : 2025-03-10DOI: 10.1021/acs.nanolett.4c06545
Hui Wang, Niels Noordzij, Mischa Mikhailov, Stephan Steinhauer, Thomas Descamps, Eitan Oksenberg, Val Zwiller, Iman Esmaeil Zadeh
Due to stringent thermal budgets in cryogenic technologies such as superconducting quantum computers and sensors, electronic building blocks that simultaneously offer low energy consumption, fast switching, low error rates, a small footprint, and simple fabrication are pivotal for large-scale devices. Here, we demonstrate a superconducting switch with attojoule switching energy, high speed (pico-second rise/fall times), and high integration density (on the order of 10–2 μm2 per switch). It consists of a superconducting nanochannel and a metal heater separated by an insulating silica layer. We experimentally demonstrate digital gate operations utilizing these nanostructures, such as NOT, NAND, NOR, AND, and OR gates, with a few femtojoules of energy consumption and ultralow bit error rates <10–8. In addition, we build energy-efficient volatile memory elements with nanosecond operation speeds and a retention time over 105 s. These superconducting switches open new possibilities for increasing the size and complexity of modern cryogenic technologies.
{"title":"Attojoule Superconducting Thermal Logic and Memories","authors":"Hui Wang, Niels Noordzij, Mischa Mikhailov, Stephan Steinhauer, Thomas Descamps, Eitan Oksenberg, Val Zwiller, Iman Esmaeil Zadeh","doi":"10.1021/acs.nanolett.4c06545","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06545","url":null,"abstract":"Due to stringent thermal budgets in cryogenic technologies such as superconducting quantum computers and sensors, electronic building blocks that simultaneously offer low energy consumption, fast switching, low error rates, a small footprint, and simple fabrication are pivotal for large-scale devices. Here, we demonstrate a superconducting switch with attojoule switching energy, high speed (pico-second rise/fall times), and high integration density (on the order of 10<sup>–2</sup> μm<sup>2</sup> per switch). It consists of a superconducting nanochannel and a metal heater separated by an insulating silica layer. We experimentally demonstrate digital gate operations utilizing these nanostructures, such as NOT, NAND, NOR, AND, and OR gates, with a few femtojoules of energy consumption and ultralow bit error rates <10<sup>–8</sup>. In addition, we build energy-efficient volatile memory elements with nanosecond operation speeds and a retention time over 10<sup>5</sup> s. These superconducting switches open new possibilities for increasing the size and complexity of modern cryogenic technologies.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"39 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583033","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}
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