ACS Nano最新文献_第3页

Biomimetic Bouligand Meta-Assembly Enhances Modulability of Chiroptical Cotton Effects 仿生Bouligand元组装增强了热带棉花效应的可调节性

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-05-06 DOI: 10.1021/acsnano.5c03919

My-Chi Thi Nguyen, Huu-Quang Nguyen, Hyojin Kang, Se Jeong Park, Jaebeom Lee

{"title":"Biomimetic Bouligand Meta-Assembly Enhances Modulability of Chiroptical Cotton Effects","authors":"My-Chi Thi Nguyen, Huu-Quang Nguyen, Hyojin Kang, Se Jeong Park, Jaebeom Lee","doi":"10.1021/acsnano.5c03919","DOIUrl":"https://doi.org/10.1021/acsnano.5c03919","url":null,"abstract":"Hierarchical bioinspired nanostructures have garnered significant attention due to their ability to mimic natural phenomena in well-defined artificial systems. Specifically, bioinspired chiral metasurfaces demonstrate strong chiroptical interactions with circularly polarized light, setting the stage for their role in next-generation optical technologies. In this study, a nature-inspired approach mimicking the structure of the Protaetia scarab beetle exoskeleton was applied to fabricate Bouligand meta-assemblies of magnetoplasmonic gold/iron oxide nanowires. By sputter coating a thin metallic platinum layer with controlled thickness, the fabricated structure exhibits amplified and tunable circular dichroism (CD) in transmission, diffuse reflectance circular dichroism (DRCD), and magnetic circular dichroism (MCD) modes within the ultraviolet and visible wavelength range. A strong enhancement of bisignate Cotton effects in the transmission CD spectrum was observed by adding a 30-nm-thick platinum layer, while a thinner metallic coating layer of 10 nm provided the strongest enhancement effect in DRCD mode. Additionally, the MCD study and computational optical simulations revealed the unique interplay of plasmonic coupling, enhanced absorption/reflection, and conformal inheritance of chirality as the origin of the enhancement effect of the metallic coating layer. The facile biomimetic fabrication technique provides multimodal control of the chiroptical Cotton effects, holding promises for applications in structural coloration, camouflage photonics, anti-counterfeiting, chiral sensing, and asymmetric catalysis.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"103 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143915768","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

Emergent Cavity Junction around Metal-on-Graphene Contacts 围绕金属-石墨烯接触的涌现腔结

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-05-06 DOI: 10.1021/acsnano.4c16191

Yuhao Zhao, Maëlle Kapfer, Megan Eisele, Kenji Watanabe, Takashi Taniguchi, Oded Zilberberg, Bjarke S. Jessen

{"title":"Emergent Cavity Junction around Metal-on-Graphene Contacts","authors":"Yuhao Zhao, Maëlle Kapfer, Megan Eisele, Kenji Watanabe, Takashi Taniguchi, Oded Zilberberg, Bjarke S. Jessen","doi":"10.1021/acsnano.4c16191","DOIUrl":"https://doi.org/10.1021/acsnano.4c16191","url":null,"abstract":"Harnessing graphene’s electronic properties for practical applications requires a comprehensive understanding of its interfaces with metal contacts, which are essential for device integration. Traditionally, the metal–graphene (MG) interface has been considered straightforward, primarily affecting graphene’s work function through doping mechanisms. However, as device dimensions shrink to the sub-micrometer scale, subtle interfacial phenomena become increasingly significant. Here, we investigate transport phenomena occurring at high-quality, sub-micrometer metal contacts on graphene. Through transport measurements, electrostatic simulations, and first-principles calculations, we demonstrate that the metal contact induces a localized n-doped radial cavity, defined cooperatively by the metal-induced electrostatic potential and Klein tunneling. This mechanism leads to quantized energy states and secondary resistance peaks as a function of graphene doping that decrease with increasing contact size. In the presence of a perpendicular magnetic field, the cavity hosts a distinct set of Landau levels, resulting in the formation of a secondary bulk interacting with the intrinsic graphene bulk. This interplay enables the direct observation of topological edge states arising from bulk-boundary correspondence. Our results provide an improved understanding of metal–graphene interfaces, highlighting fundamental properties of graphene relevant for graphene-based nanoelectronic devices.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"62 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143915769","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

Hierarchical Co9S8@In2.77S4 Heterojunction for Efficient Photocatalytic Reduction of CO2 to Syngas 等级Co9S8@In2.77S4异质结高效光催化还原CO2制合成气

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-05-06 DOI: 10.1021/acsnano.5c02971

Hang Zhao, Hao Song, Zhefei Pan, Xun Zhu, Dingding Ye, Yang Yang, Hong Wang, Rong Chen, Qiang Liao

{"title":"Hierarchical Co9S8@In2.77S4 Heterojunction for Efficient Photocatalytic Reduction of CO2 to Syngas","authors":"Hang Zhao, Hao Song, Zhefei Pan, Xun Zhu, Dingding Ye, Yang Yang, Hong Wang, Rong Chen, Qiang Liao","doi":"10.1021/acsnano.5c02971","DOIUrl":"https://doi.org/10.1021/acsnano.5c02971","url":null,"abstract":"Photocatalytic reduction of CO2 to solar fuels is recognized as a promising route to address environmental and energy issues. However, there exist two challenges of insufficient CO2 activation and fast charge carrier recombination, impeding this conversion. Herein, a hierarchical Co9S8@In2.77S4 (CoS@InS) heterojunction is developed by the in situ growth of the In2.77S4 nanosheets on the Co9S8 nanotubes for efficient photocatalytic reduction of CO2 to syngas in an aqueous reaction system with [Ru(bpy)3]Cl2 serving as a photosensitizer and triethanolamine as a sacrificial agent. In addition to the promoted charge separation and transfer, the strong interfacial electric field formed in this heterojunction tunes the p-band center of In active sites toward the Fermi level. Accordingly, the adsorption of the key intermediate *COOH is enhanced, and the energy barrier of *CO desorption is reduced. Besides, the hierarchical hollow structure enhances light utilization and mass transfer, increases the specific surface area, and provides abundant reaction sites. As a result, the hierarchical CoS@InS heterojunction exhibits superior activity. The optimized heterojunction yields CO and H2 production rates as high as 83,648 and 28,635 μmol g–1 h–1, respectively, with an apparent quantum yield of 5.60% at 450 nm.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"25 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143915934","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

Spatial and Temporal Single-Cell Profiling of RNA Compartmentalization in Neurons with Nanotweezers 纳米镊子对神经元中RNA区隔化的时空单细胞分析

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-05-06 DOI: 10.1021/acsnano.5c02056

Annie Sahota, Binoy Paulose Nadappuram, Zoe Kwan, Flavie Lesept, Jack H. Howden, Suzanne Claxton, Josef T. Kittler, Michael J. Devine, Joshua B. Edel, Aleksandar P. Ivanov

{"title":"Spatial and Temporal Single-Cell Profiling of RNA Compartmentalization in Neurons with Nanotweezers","authors":"Annie Sahota, Binoy Paulose Nadappuram, Zoe Kwan, Flavie Lesept, Jack H. Howden, Suzanne Claxton, Josef T. Kittler, Michael J. Devine, Joshua B. Edel, Aleksandar P. Ivanov","doi":"10.1021/acsnano.5c02056","DOIUrl":"https://doi.org/10.1021/acsnano.5c02056","url":null,"abstract":"Emerging techniques for mapping mRNAs within the subcellular compartments of live cells hold great promise for advancing our understanding of the spatial distribution of transcripts and enabling the study of single-cell dynamics in health and disease. This is particularly critical for polarized cells, such as neurons, where mRNA compartmentalization is essential for regulating gene expression, and defects in these localization mechanisms are linked to numerous neurological disorders. However, many subcellular analysis techniques require a compromise between subcellular precision, live-cell measurements, and nondestructive access to single cells in their native microenvironment. To overcome these challenges, we employ a single-cell technology that we have recently developed, the nanotweezer, which features a nanoscale footprint (∼100 nm), avoids cytoplasmic fluid aspiration, and enables rapid RNA isolation from living cells with minimal invasiveness. Using this tool, we investigate single-cell mRNA compartmentalization in the soma and dendrites of hippocampal neurons at different stages of neuronal development. By combining precise targeting with sequential sampling, we track changes in mRNA abundance at dendritic spine regions of the same neuron, both before and after stimulation. This minimally invasive approach enables time-resolved, subcellular gene expression profiling of the same single cell. This could provide critical insights into polarized cells and advance our understanding of biological processes and complex diseases.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"31 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143910779","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

Regulating Ru–Ru Distance in RuO2 Catalyst by Lattice Hydroxyl for Efficient Water Oxidation 用点阵羟基调节RuO2催化剂中的儒儒距离实现高效水氧化

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-05-06 DOI: 10.1021/acsnano.5c01937

Sixuan She, Hsiao-Chien Chen, Changsheng Chen, Yanping Zhu, Gao Chen, Yufei Song, Yiping Xiao, Zezhou Lin, Di Zu, Luwei Peng, Hao Li, Ye Zhu, Yuen Hong Tsang, Haitao Huang

{"title":"Regulating Ru–Ru Distance in RuO2 Catalyst by Lattice Hydroxyl for Efficient Water Oxidation","authors":"Sixuan She, Hsiao-Chien Chen, Changsheng Chen, Yanping Zhu, Gao Chen, Yufei Song, Yiping Xiao, Zezhou Lin, Di Zu, Luwei Peng, Hao Li, Ye Zhu, Yuen Hong Tsang, Haitao Huang","doi":"10.1021/acsnano.5c01937","DOIUrl":"https://doi.org/10.1021/acsnano.5c01937","url":null,"abstract":"Highly active and durable electrocatalysts for the oxygen evolution reaction (OER) are crucial for proton exchange membrane water electrolysis (PEMWE). While doped RuO2 catalysts demonstrate good activity and stability, the presence of dopants limits the number of exposed active sites and complicates Ru recovery. Here, we present a monometallic RuO2 (d-RuO2) with lattice hydroxyl in the periodic structure as a high-performance OER electrocatalyst. The obtained d-RuO2 catalyst exhibits a low overpotential of 150 mV and long-term operational stability of 500 h at 10 mA cm–2, outperforming many Ru/Ir-based oxides ever reported. A PEMWE device using d-RuO2 sustains operation for 348 h at 200 mA cm–2. In-situ characterization reveals that the incorporation of lattice hydroxyl increases the Ru–Ru distance, which facilitates the turnover of the Ru oxidation state and promotes the formation of stable edge-sharing [RuO6] octahedra during the OER, thereby accelerating the formation of O–O bonds and suppressing the overoxidation of Ru sites. Additionally, the small particle size of the catalyst decreases the three-phase contact line and promotes bubble release. This study will provide insights into the design and optimization of catalysts for various electrochemical reactions.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"21 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143915933","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

A Hierarchical Contact–Electrification Interface Based on Gradient Micro-/Nanostructured Hydrogel for Cardiovascular Disease Monitoring 基于梯度微/纳米结构水凝胶的分层接触-电气化界面用于心血管疾病监测

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-05-05 DOI: 10.1021/acsnano.5c00313

Zhenqiu Gao, Liming Zhang, Hao Lei, Yina Liu, Haicheng Gu, Lingjie Xie, Bohan Lu, Haifeng Ji, Zhen Wen, Xuhui Sun

{"title":"A Hierarchical Contact–Electrification Interface Based on Gradient Micro-/Nanostructured Hydrogel for Cardiovascular Disease Monitoring","authors":"Zhenqiu Gao, Liming Zhang, Hao Lei, Yina Liu, Haicheng Gu, Lingjie Xie, Bohan Lu, Haifeng Ji, Zhen Wen, Xuhui Sun","doi":"10.1021/acsnano.5c00313","DOIUrl":"https://doi.org/10.1021/acsnano.5c00313","url":null,"abstract":"Accurate monitoring of pulses is essential for assessing cardiovascular health. However, the specificity of the pulse wave depends on prestress applied to a wearable sensor. Here, we introduce a progressive contact area compensation strategy, which greatly extends the detection range of the sensor’s high-sensitivity region. It features a hierarchical flower surface structure and a gradient micro-/nanostructured hydrogel as the dielectric layer, compensating for the output decrease resulting from pressure hardening by gradually increasing the contact area between the contact–electrification interfaces. Consequently, the gradient micro-/nanostructured hydrogel, fabricated via electric field induction, enables the sensor’s high-sensitivity region to reach 1.1–52.2 kPa, a 5-fold improvement over that of comparable sensors. By integrating prestress adaptive units, signal processing modules, and a peak seeking algorithm, we develop a wireless wristband for continuous monitoring of cardiovascular status and blood pressure. Importantly, a preliminary 10 day blood pressure test on 22 volunteers showed an error margin of less than ±5 mm Hg, demonstrating its potential as a cardiovascular health product.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"76 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143905651","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

High-Efficiency Electrochemical Ammonia Synthesis at Co-Catalytic Fe–Mo Dual-Atom Sites Fe-Mo双原子催化下的高效电化学氨合成

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-05-05 DOI: 10.1021/acsnano.5c01741

Ruonan Li, Runlin Ma, Li-Li Zhang, Wei Ma, Gonglei Shao, Xu Zhang, Yun Tian, Menggai Jiao, Zhen Zhou

{"title":"High-Efficiency Electrochemical Ammonia Synthesis at Co-Catalytic Fe–Mo Dual-Atom Sites","authors":"Ruonan Li, Runlin Ma, Li-Li Zhang, Wei Ma, Gonglei Shao, Xu Zhang, Yun Tian, Menggai Jiao, Zhen Zhou","doi":"10.1021/acsnano.5c01741","DOIUrl":"https://doi.org/10.1021/acsnano.5c01741","url":null,"abstract":"To tackle the challenge in electrochemical nitrogen fixing and reduction in aqueous electrolytes, the conventional approach has been to suppress the competitive hydrogen evolution reaction. Nonetheless, proton provision is a crucial step in the nitrogen reduction pathway to produce ammonia, and a single active site faces the daunting task in striking a balance between high nitrogen fixation efficiency and fast protonation kinetics. This work presents a harmonic strategy featuring atomically dispersed dual Fe–Mo sites anchored in an N-doped carbon (FeMoNC) substrate, where a low-spin Fe center with enriched empty d orbitals aids in nitrogen fixation and activation, and the adjacent Mo site accelerates the protonation kinetics of N-containing intermediates at the Fe site via a distal associative mechanism. Driven by this co-catalytic mechanism, the FeMoNC catalyst achieves a Faradaic efficiency of 37.42%, marking a significant improvement of 7.8- and 10.6-fold over Fe or Mo single-atom catalysts, respectively. Furthermore, an excellent NH3 yield of 54.40 μg h–1 mgcat.–1 is realized in a flow cell by enhancing mass transfer. This study provides valuable insights into diatomic co-catalytic mechanisms for electrochemical ammonia synthesis.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"93 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143905646","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

Remodeling the Senescent Microenvironment for Promoting Osteoporotic Tendon-to-Bone Healing via Synergizing Senolytic Quercetin and Aligned Nanowire-Structured Hydrogels 通过协同抗衰老槲皮素和排列纳米线结构水凝胶，重塑衰老微环境促进骨质疏松肌腱到骨愈合

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-05-05 DOI: 10.1021/acsnano.5c01332

Wei Song, Wencai Liu, Si-Yi Li, Yuhao Yu, Hui Xu, Tingwang Shi, Han-Ping Yu, Yaohua He, Ying-Jie Zhu, Weilin Yu

{"title":"Remodeling the Senescent Microenvironment for Promoting Osteoporotic Tendon-to-Bone Healing via Synergizing Senolytic Quercetin and Aligned Nanowire-Structured Hydrogels","authors":"Wei Song, Wencai Liu, Si-Yi Li, Yuhao Yu, Hui Xu, Tingwang Shi, Han-Ping Yu, Yaohua He, Ying-Jie Zhu, Weilin Yu","doi":"10.1021/acsnano.5c01332","DOIUrl":"https://doi.org/10.1021/acsnano.5c01332","url":null,"abstract":"Osteoporotic tendon-to-bone healing remains a major challenge, as cellular senescence disrupts tissue regeneration and impairs repair outcomes. Although the role of cellular senescence in rotator cuff repair is increasingly recognized, current strategies often overlook the complex pathological context, particularly the dual impacts of senescence on both bone marrow-derived mesenchymal stem cells (BMSCs) and tendon-derived stem cells (TDSCs). This gap hampers effective tendon-to-bone healing and integration, especially under osteoporotic conditions. Herein, a composite hydrogel system, quercetin-loaded aligned ultralong hydroxyapatite nanowire/gelatin-hyaluronic acid hydrogel (Que-AHNW/GH), has been developed to address these challenges. By integrating senolytic quercetin as a biological cue with highly aligned ultralong hydroxyapatite (HAP) nanowires as a topographical cue, the system remodels the senescent microenvironment, alleviating senescence in both BMSCs and TDSCs and promoting osteogenesis and tenogenesis. Que-AHNW/GH suppresses the PI3K/AKT pathway, enhances autophagy, and reduces senescence in both cell types. In vivo, Que-AHNW/GH improves bone tunnel regeneration, tendon repair, and tendon-to-bone integration in osteoporotic rats with rotator cuff injury. This system enhances biomechanical strength and gait performance and demonstrates excellent biosafety. These findings highlight the promising potential of Que-AHNW/GH as a multifunctional biomaterial for effectively promoting senescence-related tendon-to-bone healing, offering a promising solution for treating osteoporotic tendon-to-bone injuries.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"31 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143910729","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

Correction to “Tumor Microenvironment-Activatable Nanosystem Capable of Overcoming Multiple Therapeutic Obstacles for Augmenting Immuno/Metal-Ion Therapy” 修正“肿瘤微环境可激活纳米系统能够克服增强免疫/金属离子治疗的多重治疗障碍”

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-05-05 DOI: 10.1021/acsnano.5c06637

Qian Cheng, Xiaolei Shi, Yuzhe Chen, Qilin Li, Jiawei Wang, Heli Li, Lin Wang, Zheng Wang

引用次数: 0

Self-Assembly of Nanogold Triplets on Trimeric Viral Proteins for Infectious Disease Diagnosis 纳米金三胞胎在三聚体病毒蛋白上的自组装用于传染病诊断

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-05-05 DOI: 10.1021/acsnano.4c17685

Wenpeng Liu, Ahmed Soliman, Hagar E. Emam, Jun Zhang, Joseph V. Bonventre, Luke P. Lee, Mahmoud L. Nasr

引用次数: 0