Nanotechnology最新文献

{"title":"Continuous and reversible electrical-tuning of fluorescent decay rate via Fano resonance.","authors":"Emre Ozan Polat, Zafer Artvin, Yusuf Şaki, Alpan Bek, Ramazan Sahin","doi":"10.1088/1361-6528/ae5cac","DOIUrl":"10.1088/1361-6528/ae5cac","url":null,"abstract":"<p><p>We demonstrate electrically tunable control of the radiative and nonradiative decay rates of a fluorescent molecule through a Fano-resonant transparency embedded in the plasmonic local density of optical states (LDOSs). An auxiliary quantum object (QO) placed at the hotspot of a plasmonic nanoparticle suppresses the plasmonic excitation at its transition frequencyωQO, thereby creating a narrow transparency window and reducing the LDOS atω=ωQO. When the fluorescence frequency of a nearby emitter overlaps this window, the plasmon-induced enhancement of both radiative and nonradiative decay is strongly suppressed. BecauseωQOcan be shifted electrically, the transparency can be moved reversibly across the fluorescence line, enabling continuous voltage control of the decay rates. Three-dimensional Maxwell simulations predict tuning of the radiative and nonradiative channels by up to two orders of magnitude. The proposed mechanism offers a compact route toward fast, reversible control of light-matter interaction in integrated photonics, with potential applications in single-photon sources, electrically programmable quantum devices, super-resolution microscopy, and surface-enhanced Raman spectroscopy.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147639001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combinatorial thickness-graded film growth via substrate tilt geometry in pulsed laser deposition.","authors":"Nirmal Singh, Michele Tunesi, Vikas Reddy Paduri, Don A Lucca, Ritesh Sachan","doi":"10.1088/1361-6528/ae5a42","DOIUrl":"10.1088/1361-6528/ae5a42","url":null,"abstract":"<p><p>Pulsed laser deposition (PLD) is a well-established method for synthesizing thin films, enabling precise control over growth parameters while maintaining stoichiometry across the specimen. Integrating PLD with combinatorial studies offers a significant advantage for conducting high-throughput experiments, thereby accelerating discovery. In this work, we introduce a reliable and reproducible approach for combinatorial thin-film synthesis that features spatially controlled thickness gradients on a substrate, achieved using a tilt-enabled stage. This technique exploits the angular distribution of the laser plume on a tilted substrate, which creates varying distances between the plume source and the substrate, resulting in a thickness gradient. While conventional PLD typically produces a plateau-shaped thickness gradient over large wafer-scale areas due to the natural profile of the ablation plume, our study aims to develop a fundamental understanding of how to create controlled thickness gradients. Using boron nitride as the model system, we investigate the effect of substrate tilt angles on the spatial distribution of thickness. Atomic force microscopy measurements show that a uniform film forms over a 10 mm × 10 mm area of the substrate at 0° tilt. In contrast, substrate tilt angles of ±20° result in a linearly graded film thickness that is asymmetric around the laser plume axis over the same area. We have extended this study to Co and NiCoCr films, which consist of elements with similar atomic numbers to minimize atomic-number-dependent variations during deposition, thereby improving the reproducibility of our approach across different material systems. Using a model having cosine-power dependency that incorporates target-substrate spacing, tilt geometry, and small-axis offsets, we simulate the ablation plasma plume profile to understand film thickness profiles for both 0° and tilted substrate geometries. The results agree with our experimental findings and provide guidance for designing combinatorial experiments that require film thickness gradients.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147593342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nitrogen vacancies g-C₃N₄/BiOBr S-scheme heterojunction with Pd for efficient photocatalytic H₂O₂production.","authors":"Mingming Du, Hongyue Liu, Qiyun Li, Yanming Zhang, Yitong Liu, Rongjun Yan, Guilin Zhuang","doi":"10.1088/1361-6528/ae5c0a","DOIUrl":"10.1088/1361-6528/ae5c0a","url":null,"abstract":"<p><p>Photocatalytic hydrogen peroxide (H₂O₂) production represents a promising pathway for solar-to-chemical energy conversion. Nevertheless, this process is constricted due to rapid recombination rate of photogenerated charge carriers. Herein, nitrogen vacancy carbon nitride (Nv-CNS)/BiOBr-Pd heterojunction was constructed by integration of Nv-CNS, bismuth oxybromide (BiOBr), and palladium nanoparticles. This ternary complex shows excellent H₂O₂ production performance, achieving a rate of 7990<i>μ</i>mol g^-1h^-1under simulated sunlight irradiation. On the basis of the consequence of x-ray photoelectron spectroscopy and ultraviolet visible spectrophotometer diffuse reflection spectroscopy, the charge transfer mechanism conforms to a S-scheme heterojunction system, which is conducive to promote the separation and transfer of electrons while preserving excellent redox capacity. The existence of nitrogen vacancies provides active sites for reaction, and Pd nanoparticles strengths the response scope and absorption capacity of sunlight. This work establishes a reasonable strategy for catalyst applied to the photocatalytic hydrogen peroxide evaluation.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147633884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strain-driven enhancement of magnetic frustration in quantum spin-liquid TbInO₃thin films.","authors":"Riya Pathak, Manisha Bansal, Saikarthikey Bhat, Bipin Babu, Souvik Paul, Tuhin Maity","doi":"10.1088/1361-6528/ae5660","DOIUrl":"10.1088/1361-6528/ae5660","url":null,"abstract":"<p><p>Quantum spin-liquid (QSL) ground state emerges in frustrated magnetic systems where competing interactions suppress long-range magnetic ordering. TbInO₃, a hexagonal perovskite, shows QSL behaviour due to geometrical frustration and strong spin-orbit coupling present in it. Here, we report the strain-driven modification of the magnetic ground state and the enhancement of magnetic frustration at milli-Kelvin (mK) temperature (<1 K) in the TbInO₃epitaxial thin film, grown on MgO (100) substrate. We observe a Curie-Weiss crossover at 1-30 K temperature, strong antiferromagnetic interactions, along with the absence of long-range ordering down to 400 mK, consistent with a QSL ground state. Notably, the thin film exhibits a significantly enhanced effective moment in the mK range compared to the bulk, attributed to strain-induced modification of the exchange pathway among Tb³⁺ions. This impact broadens the QSL state's temperature range to lower temperatures and enhances magnetic frustration in the temperature-field phase space. Further, the first-principles calculation also supports the enhancement of frustration in thin film. These findings demonstrate that strain-induced tuning of exchange interactions can enhance the magnetic frustration, offering a route to stabilise QSL phases down to lower temperatures in hexagonal perovskite thin films.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147513858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An optoelectronic synapse based on electrochemically deposited CuI thin film for neuromorphic visual processing.","authors":"Qiufei Yu, Zhongao Yang, Xiaojian Chen, Zhiwei Zhu, Chunli Jiang, Chunhua Luo, Chang Yang, Xiaodong Tang, Hui Peng","doi":"10.1088/1361-6528/ae5f25","DOIUrl":"https://doi.org/10.1088/1361-6528/ae5f25","url":null,"abstract":"<p><p>This work reports a low-cost optoelectronic synaptic device based on an electrochemically deposited CuI thin film. The electrochemical deposition technique enables large-area and uniform thin-film fabrication under low-temperature and ambient-pressure conditions, offering significant advantages of simple processing, cost-effectiveness, and compatibility with flexible substrates. Under 445 nm light stimulation, the device successfully emulates the biological synaptic functions, including paired-pulse facilitation, spike-width-dependent plasticity, spike-frequency-dependent plasticity, and spike-number-dependent plasticity. Furthermore, by implementing a convolutional neural network (CNN) for backend processing of the device-generated optoelectronic pulse signals, a high training set recognition accuracy of 95.2% is achieved under 50% noise perturbation in clothing image classification tasks, validating its potential for low-power, highly parallel neuromorphic computing applications.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147674875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CORRIGENDUM: A new type of stable borophene with flat-band-induced magnetism (2023<i>Nanotechnology</i> 34 505701).","authors":"Zhijian Li, Yang Xue, Qingzhao Yao, Bao Zhao, Wei Xu, Zhongqin Yang","doi":"10.1088/1361-6528/ae5973","DOIUrl":"https://doi.org/10.1088/1361-6528/ae5973","url":null,"abstract":"","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":"37 15","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147674909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Planar Josephson junctions templated by nanowire shadowing.","authors":"P Zhang, A Zarassi, M Pendharkar, J S Lee, L Jarjat, V Van de Sande, B Zhang, S Mudi, H Wu, S Tan, C P Dempsey, A P McFadden, S D Harrington, B Shojaei, J T Dong, A-H Chen, M Hocevar, C J Palmstrøm, S M Frolov","doi":"10.1088/1361-6528/ae5aa6","DOIUrl":"10.1088/1361-6528/ae5aa6","url":null,"abstract":"<p><p>More and more materials, with a growing variety of properties, are built into electronic devices. This is motivated both by increased device performance and by the studies of materials themselves. An important type of device is a Josephson junction based on the proximity effect between a quantum material and two superconducting contacts, useful for fundamental research as well as for quantum and other technologies. When both junction contacts are placed on the same surface, such as a two-dimensional material, the junction is called 'planar'. One outstanding challenge is that not all materials are amenable to the standard planar junction fabrication. The device quality, rather than the intrinsic characteristics, may be defining the results. Here, we introduce a technique in which nanowires are placed on the surface and act as a shadow mask for the superconductor. The advantages are that the smallest dimension is determined by the nanowire diameter and does not require lithography, and that the junction is not exposed to chemicals such as etchants. We demonstrate this method with an InAs quantum well, using two superconductors-Al and Sn, and two semiconductor nanowires-InAs and InSb. The junctions exhibit critical current levels consistent with transparent interfaces and uniform width. We show that the template nanowire can be operated as a self-aligned electrostatic gate. Beyond single junctions, we create quantum interference devices with two gate-tunable junctions. We suggest that our method can be used for a large variety of quantum materials including van der Waals layers, topological insulators, Weyl semimetals and future materials for which proximity effect devices is a promising research avenue.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147609515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochromic zinc-ion batteries: recent progress, challenges and perspectives.","authors":"Yaokang Lv, Yipin Zhou, Chao Chen, Zhiwei Cai, Lihua Gan, Mingxian Liu","doi":"10.1088/1361-6528/ae5829","DOIUrl":"10.1088/1361-6528/ae5829","url":null,"abstract":"<p><p>The evolution of electrochromic materials and technologies has opened innovative avenues for smart devices. However, their civilian adoption remains constrained by high material costs and energy-intensive fabrication processes. Recent research has shifted toward integrated electrochromic systems that combine energy storage with visualization capabilities. Among these, electrochromic supercapacitors suffer from relatively low energy density, constraining their storage capacity, whereas electrochromic zinc-ion batteries (<b>ECZIBs</b>) demonstrate superior energy density, making them more promising for smart energy storage applications. This review systematically examines the fundamental structure, key performance parameters, and essential materials for<b>ECZIBs</b>, with particular focus on recent progress in the design of cathode, anode, and electrolyte materials. We summarize the major bottlenecks currently impeding performance enhancement and practical deployment, discuss potential strategies to overcome these challenges, and provide an outlook on future development trends in<i>Eczibs.</i>We hope this concise review will offer valuable guidance and inspire further research, ultimately fostering new breakthroughs in this emerging field.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147531103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Direct reduction of CO₂catalyzed by a formate dehydrogenase immobilized on carbon nanotubes without NADH cofactor.","authors":"Zhangfei Su, Jan F Biernat, Jonathan Quintal, Dylan McFarlane-Urbszat, Aicheng Chen, Jacek Lipkowski","doi":"10.1088/1361-6528/ae53ed","DOIUrl":"10.1088/1361-6528/ae53ed","url":null,"abstract":"<p><p><u>This p</u>aper describes the electroenzymatic reduction of CO₂to formate catalyzed by formate dehydrogenase from<i>Candida boidinii</i>(<i>Cb</i>FDH) immobilized on carbon nanotube (CNT)-modified gold electrodes. Cyclic voltammetry indicates that<i>Cb</i>FDH could catalyze CO₂reduction to formate without protonated nicotinamide adenine dinucleotide (NADH) as a cofactor, exhibiting diffusion-controlled, quasi-reversible kinetics on both multi-walled CNT and single-walled CNT substrates. Surface-enhanced infrared absorption spectra indicate that<i>Cb</i>FDH adopts a near-parallel orientation on the CNT-modified gold surface, positioning its active site for the direct electron transfer between CO₂and the conductive carbon support. The IR spectra reveal an increase in the formate band's intensity in the potential region from -0.3 V to -0.6 V vs Ag/AgCl, confirming efficient CO₂reduction. Below -0.6 V vs Ag/AgCl, the hydrogen evolution reaction competitively suppresses formate yield. This study demonstrates that CNTs serve as an effective support for enzyme immobilization and confirms that CO₂could be directly reduced to formate at the CNT-modified electrode without a cofactor at potentials close to the equilibrium potential (minimum of overpotential). This represents a novel and unexpected finding.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147481269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pulsed-potential electrolysis enhances nitrate reduction and C-N coupling upgrading.","authors":"Ziping Wang, Jianguo Sun, Xiaofeng Li, Qiang Li, Dawei Chen","doi":"10.1088/1361-6528/ae5d4e","DOIUrl":"https://doi.org/10.1088/1361-6528/ae5d4e","url":null,"abstract":"<p><p>Converting harmful nitrate waste into value-added chemicals represents a promising alternative for achieving the electrocatalytic upgrading of NO3- and maintaining the global nitrogen balance. Nonetheless, improving the electrochemical performance and revealing reaction mechanisms still requires further investigation to meet the practical application requirements. Herein, we summarize the development of electrochemical NO3- reduction reaction (NO3RR) and C-N coupling reaction under pulsed-potential conditions. In the section on NO3RR, the electrocatalytic reaction systems for direct conversion of NO3- to NH3 are summarized. In the section on coupling, the C-N coupling reactions of NO3- with CO2 for urea synthesis, and with organic molecules for amino compounds synthesis are reviewed. The corresponding reaction mechanisms for different reaction systems are compared with the aid of theoretical calculations. Finally, the challenges and future perspectives are proposed. The pulsed-potential electrolysis for nitrate reduction not only increases the concentration of the local NO3-, key reactant, and intermediate species, but also restores the oxidation state of the active sites, providing guidance and reference for a nitrogen economy.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147645961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}