Nano Letters最新文献

Nanofluidic Memristive Transition and Synaptic Emulation in Atomically Thin Pores

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-03-29 DOI: 10.1021/acs.nanolett.4c06297

Ruiyang Song, Peng Wang, Haiou Zeng, Shengping Zhang, Ningran Wu, Yuancheng Liu, Pan Zhang, Guodong Xue, Junhe Tong, Bohai Li, Hongfei Ye, Kaihui Liu, Wei Wang, Luda Wang

{"title":"Nanofluidic Memristive Transition and Synaptic Emulation in Atomically Thin Pores","authors":"Ruiyang Song, Peng Wang, Haiou Zeng, Shengping Zhang, Ningran Wu, Yuancheng Liu, Pan Zhang, Guodong Xue, Junhe Tong, Bohai Li, Hongfei Ye, Kaihui Liu, Wei Wang, Luda Wang","doi":"10.1021/acs.nanolett.4c06297","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06297","url":null,"abstract":"Ionic transport across nanochannels is the basis of communications in living organisms, enlightening neuromorphic nanofluidic iontronics. Comparing to the angstrom-scale long biological ionic pathways, it remains a great challenge to achieve nanofluidic memristors at such thinnest limit due to the ambiguous electrical model and interaction process. Here, we report atomically thin memristive nanopores in two-dimensional materials by designing optimized ionic conductance to decouple the memristive, ohmic, and capacitive effects. By conducting different charged iontronics, we realize the reconfigurable memristive transition between nonvolatile-bipolar and volatile-unipolar characteristics, which arises from distinct transport processes governed by energy barriers. Notably, we emulate synaptic functions with ultralow energy consumption of ∼0.546 pJ per spike and reproduce biological learning behaviors. The memristive nanopores are similar to the biosystems in angstrom structure, rich iontronic responses, and millisecond-level operating pulse width, matching the biological potential width. This work provides a new paradigm for boosting brain-inspired nanofluidic devices.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"216 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734481","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

Topological Band Engineering in q-BICs and EPs Derived from Visible Range Plasmons

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-03-28 DOI: 10.1021/acs.nanolett.5c00144

Wei Li, Cai Luo, Shibing Tian, RuiXuan Zheng, Guangzhou Geng, Haifang Yang, Baoli Liu, Qinghua Song, Yang Guo, Changzhi Gu

引用次数: 0

Cascade-Targeting Apoptosis via Synergy of TRAIL-Specific Bystander Effect and Mitochondrial Photodamage in Cancer Therapy

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-03-28 DOI: 10.1021/acs.nanolett.5c00878

Shengyu Liu, Zhongsheng Ji, Sulei Ge, Chuxin Cai, Huaqing Zhang, Yi Wang, Yifan Zhou, Jianping Zhou, Hao Cheng, Yang Ding

{"title":"Cascade-Targeting Apoptosis via Synergy of TRAIL-Specific Bystander Effect and Mitochondrial Photodamage in Cancer Therapy","authors":"Shengyu Liu, Zhongsheng Ji, Sulei Ge, Chuxin Cai, Huaqing Zhang, Yi Wang, Yifan Zhou, Jianping Zhou, Hao Cheng, Yang Ding","doi":"10.1021/acs.nanolett.5c00878","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00878","url":null,"abstract":"Tumor-specific apoptosis exerts considerable curative efficacy in cancer, particularly with TRAIL, which has been approved in the clinic; however, therapeutic outcome is compromised due to apoptosis evasion and the short half-life of exogenously infused TRAIL. Herein, we propose a synergistic apoptosis strategy of orthotopic TRAIL expression for enhancing the bystander effect and mitochondrial photodamage for intrinsic apoptosis activation. To actualize synergetic apoptosis, we develop cascade-targeting nanoparticles to perform cell-to-mitochondria shuttling, in which TRAIL-expressing plasmid (pTRAIL) is coprecipitated with calcium phosphate on a glycyrrhetinic acid (GA)-modified graphene oxide nanosheet. For apoptosis synergy, GA mediates tumor accumulation of nanoparticles, followed by structure dissociation for efficient pTRAIL release and expression (cascade module I). Thereafter, GA-modified graphene carriers perform mitochondria distribution for laser-triggered photodamage (cascade module II). The nanoparticles yield tumor inhibition of 86.78% in the melanoma model and demonstrate metastasis blocking activity. Collectively, a cascade-targeting apoptosis technology via a combination of TRAIL-specific bystander effects and mitochondrial photodamage provides innovative oncotherapy synergy.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"183 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723501","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

Polarization-Field-Induced Inequivalent Exciton Dynamics in Janus MoSeS/MoSe2 Heterostructures

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-03-28 DOI: 10.1021/acs.nanolett.5c00074

Mengyu Liu, Wei Wu, Zilong Chen, Yuxiang Zhang, Xingcheng Yu, Shunhang Yang, Hao Wang, Feiya Xu, Li Chen, Xu Li, Yaping Wu, Zhiming Wu, Junyong Kang

{"title":"Polarization-Field-Induced Inequivalent Exciton Dynamics in Janus MoSeS/MoSe2 Heterostructures","authors":"Mengyu Liu, Wei Wu, Zilong Chen, Yuxiang Zhang, Xingcheng Yu, Shunhang Yang, Hao Wang, Feiya Xu, Li Chen, Xu Li, Yaping Wu, Zhiming Wu, Junyong Kang","doi":"10.1021/acs.nanolett.5c00074","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00074","url":null,"abstract":"The interplay between excitons and physical fields emerges as a forefront research topic within the domain of condensed matter physics, harboring significant impact for unraveling material properties. Herein, we investigate the valley exciton behaviors in Janus MoSeS/MoSe2 heterostructures with 2H- or 3R-stacking configurations. We ascertain that the intrinsic polarized electric field in Janus materials can markedly enhance the valley polarization. Furthermore, experimental results reveal that different excitons exhibit inequivalent spin-valley dynamic processes under intrinsic electric fields. Among them, intervalley trions exhibit a superior capability to preserve their spin states under a strong intrinsic electric field due to the quantum-confined Stark effect, thereby achieving the highest degree of valley polarization. This work provides fundamental insights into the strong correlation effect between excitons and polarized electric fields, signifying an advancement in control over the valley degree of freedom.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"36 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723499","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

Large Positive Magnetoconductance in Carbon Nanoscrolls

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-03-28 DOI: 10.1021/acs.nanolett.4c03694

Yu-Jie Zhong, Jia-Cheng Li, Xuan-Fu Huang, Ying-Je Lee, Ting-Zhen Chen, Jia-Ren Zhang, Angus Huang, Hsiu-Chuan Hsu, Carmine Ortix, Ching-Hao Chang

引用次数: 0

Microscopic Kinetics of Water Adsorption in Metal–Organic Frameworks

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-03-28 DOI: 10.1021/acs.nanolett.5c00343

Chunye Ma, Jiawang Li, Guang Wang, Zhigang Li, Wei Su, Yanguang Zhou

引用次数: 0

Strong Coupling between Mn2+ Dopants and CdSe Nanoplatelets Enables Charge-Transfer Transition and Dual Emission

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-03-28 DOI: 10.1021/acs.nanolett.5c01269

Lifeng Wang, Junhui Wang, Jinglu Sun, Yongshun Lv, Tao Ding, Pengfei Cheng, Kaifeng Wu

{"title":"Strong Coupling between Mn2+ Dopants and CdSe Nanoplatelets Enables Charge-Transfer Transition and Dual Emission","authors":"Lifeng Wang, Junhui Wang, Jinglu Sun, Yongshun Lv, Tao Ding, Pengfei Cheng, Kaifeng Wu","doi":"10.1021/acs.nanolett.5c01269","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01269","url":null,"abstract":"Doping transitional metals into colloidal nanocrystals can significantly modify their excited-state dynamics and enrich their optical and magneto-optical functionalities. Here we synthesize Mn-doped CdSe nanoplatelets and investigate their excited-state dynamics and light-emission mechanisms. Extensive characterizations suggest that Mn2+ ions are situated near the surface-region of the nanoplatelets. The atomic thinness of nanoplatelets allows for a strong host-dopant coupling, manifested as broadband charge-transfer absorption and emission (near 575 nm) between the host valence band and the dopant d-orbitals. Photoexcitation of the host leads to rapid (a few ps) electron transfer from the conduction band to the d-orbitals, and the resultant charge-transfer state decays within a few ns not only through charge-transfer emission but also generating an excited-state species (likely Mn-Mn dimer) with a characteristic near-infrared emission. These novel photophysics and photochemistry uncovered for quasi-two-dimensional Mn-doped nanocrystals form the basis for optical, magneto-optical, and energy conversion applications using such materials.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"30 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723504","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

Gap-Enhanced Catalysis in Gold Nanostructures by Electric Field and Curvature Effects

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-03-27 DOI: 10.1021/acs.nanolett.4c06399

Shenming Wang, Xiaohui Liu, Lin Yang, Wenxuan Yang, Zhenzhen Feng, Guangyong Qin, Tongtao Yue, Hua He, Jingbin Zeng

{"title":"Gap-Enhanced Catalysis in Gold Nanostructures by Electric Field and Curvature Effects","authors":"Shenming Wang, Xiaohui Liu, Lin Yang, Wenxuan Yang, Zhenzhen Feng, Guangyong Qin, Tongtao Yue, Hua He, Jingbin Zeng","doi":"10.1021/acs.nanolett.4c06399","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06399","url":null,"abstract":"The catalytic performance of plasmonic nanostructures is strongly influenced by surface morphology. While the antenna effect in tip regions has received considerable attention, the role of gap morphology has been largely overlooked. Comprehending morphology-regulated catalysis at the subparticle level remains constrained by morphology heterogeneity and imaging resolution limitations, hindering rational nanocatalyst design. Here, we develop a single-particle catalytic activity assay by coupling single-molecule fluorescence (SMF) imaging with plasmon-enhanced fluorescence, enabling the probing of catalytic dynamics of plasmonic Au nanostructures and their correlation with local electric fields. Using this approach, we demonstrate that nanospine formation with nanoscale gaps on Au nanostructures significantly enhances catalytic activity. Further investigations using SMF imaging, electric field simulations, and molecular dynamics simulations reveal that the gap-enhanced catalytic activity is driven by amplified electric fields and increased substrate adsorption at negatively curved sites. This study provides valuable insights into designing plasmonic nanocatalysts through surface morphology engineering.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"183 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713710","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

Phase Identification of Layered GaS by Polarization-Dependent Angle-Resolved Oblique Incident Second Harmonic Generation

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-03-27 DOI: 10.1021/acs.nanolett.5c00345

Ying Song, Hanyu Zhang, Weiheng Zhong, Mingxiu Liu, Weiming Wang, Jiawei Jing, Liujian Qi, Zhilin Gong, Kainan Chang, Rongkuan Leng, Yanchao Wang, Shaojuan Li, Xin-Gang Zhao, Zhong-Ling Lang, Yuwei Shan, Wei Xin, JinLuo Cheng

{"title":"Phase Identification of Layered GaS by Polarization-Dependent Angle-Resolved Oblique Incident Second Harmonic Generation","authors":"Ying Song, Hanyu Zhang, Weiheng Zhong, Mingxiu Liu, Weiming Wang, Jiawei Jing, Liujian Qi, Zhilin Gong, Kainan Chang, Rongkuan Leng, Yanchao Wang, Shaojuan Li, Xin-Gang Zhao, Zhong-Ling Lang, Yuwei Shan, Wei Xin, JinLuo Cheng","doi":"10.1021/acs.nanolett.5c00345","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00345","url":null,"abstract":"Layered gallium sulfide (GaS), a material that has attracted much attention in the field of micro-nano optoelectronics recently, is predicted to have four stable stacking orders (β-, γ-, ε-, and δ-GaS) with close formation energies; β-GaS is the most considered, and other phases are seldom discussed. However, considering the ease of the phase transition in few-layer materials, the lack of accurate crystal phase identification prevents a full understanding of this material for specific applications requiring other crystal phases. Here, we report a novel in situ and nondestructive method to identify the phase of layered GaS by polarization-dependent angle-resolved oblique incident second harmonic generation (SHG). Through this method, we discovered the presence of γ-GaS with a portion of approximately one-sixth of the total samples. Our work has laid a foundation for the application of GaS, and our approach has established a technical guarantee for structural analysis of van der Waals layered materials.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"23 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723506","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

van der Waals Lamination for Effective Bottom Channel Modulation of Oxide Transistors

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-03-27 DOI: 10.1021/acs.nanolett.5c00313

Xiaokun Yang, Donglin Lu, Rui He, Yang Chen, Zheyi Lu, Liting Liu, Songlong Liu, Quanyang Tao, Likuan Ma, Shuimei Ding, Xiao Liu, Yunxin Li, Yiliu Wang, Lei Liao, Yuan Liu

{"title":"van der Waals Lamination for Effective Bottom Channel Modulation of Oxide Transistors","authors":"Xiaokun Yang, Donglin Lu, Rui He, Yang Chen, Zheyi Lu, Liting Liu, Songlong Liu, Quanyang Tao, Likuan Ma, Shuimei Ding, Xiao Liu, Yunxin Li, Yiliu Wang, Lei Liao, Yuan Liu","doi":"10.1021/acs.nanolett.5c00313","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00313","url":null,"abstract":"Plasma treatment has been widely used to improve the performance of oxide transistors. However, the real active channel of the back-gated transistors is typically buried close to the dielectric interface and cannot be effectively modulated by plasmas. In this work, we report a bottom plasma treatment strategy that can directly modulate the oxide channel. Within this process, the as-deposited oxide channel could be physically peeled off from the sacrificial wafer using the van der Waals delamination process, exposing the bottom channel region for direct plasma treatment. After treatment, indium gallium zinc oxide (IGZO) transistors exhibit a large on–off ratio of 4 × 108 and high carrier mobility over 25 cm2 V–1 s–1, which is over 4 times higher compared to the control device with conventional top plasma treatment. Furthermore, detailed X-ray photoelectron spectroscopy measurements confirm that the improved performance originates from the passivation of oxygen vacancy and nitrogen doping within the active bottom channel region.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"56 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713454","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