Nanoscale Horizons最新文献

{"title":"Reflecting on Nanoscale Horizons in 2024","authors":"","doi":"10.1039/D4NH90083A","DOIUrl":"10.1039/D4NH90083A","url":null,"abstract":"<p >The <em>Nanoscale Horizons</em> Editorial Board and Editorial Office reflect on the exciting events, activities and updates from the journal in 2024 and look forward to celebrating 10 years since the journal was inaugurated in 2025.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 1","pages":" 11-15"},"PeriodicalIF":8.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Achieving neuronal dynamics with spike encoding and spatial-temporal summation in vanadium-based threshold switching memristor for asynchronous signal integration†","authors":"Pei-Lin Lin, Zih-Siao Liao, Shuai-Ming Chen and Jen-Sue Chen","doi":"10.1039/D4NH00484A","DOIUrl":"10.1039/D4NH00484A","url":null,"abstract":"<p >Artificial neuronal devices that emulate the dynamics of biological neurons are pivotal for advancing brain emulation and developing bio-inspired electronic systems. This paper presents the design and demonstration of an artificial neuron circuit based on a Pt/V/AlO<small>_<em>x</em></small>/Pt threshold switching memristor (TSM) integrated with an external resistor. By applying voltage pulses, we successfully exhibit the leaky integrate-and-fire (LIF) behavior, as well as both spatial and spatiotemporal summation capabilities, achieving the asynchronous signal integration. Notably, the Pt/V/AlO<small>_<em>x</em></small>/Pt TSM demonstrates ultrafast switching speeds (on/off times ∼165 ns/310 ns) and remarkable stability (endurance &gt;10<small>²</small> cycles with cycle-to-cycle variations &lt;2.5%). These attributes render the circuit highly suitable as a spike generator in neuromorphic computing applications. The Pt/V/AlO<small>_<em>x</em></small>/Pt TSM-based spike encoder can output current spikes at frequencies ranging from approximately 200 kHz to 800 kHz. The modulation of output spike frequency is achievable by adjusting the external resistor and capacitor within the spike encoder circuit, providing considerable operational flexibility. Additionally, the Pt/V/AlO<small>_<em>x</em></small>/Pt TSM boasts a lower threshold voltage (<em>V</em><small>_th</small> ∼ 0.84 V) compared to previously reported VO<small>_<em>x</em></small>-based TSMs, leading to significantly reduced energy consumption for spike generation (∼2.75 nJ per spike).</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 2","pages":" 379-387"},"PeriodicalIF":8.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142805642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanoscale Horizons Emerging Investigator Series: Dr Mita Dasog, Dalhousie University, Canada","authors":"","doi":"10.1039/D4NH90079K","DOIUrl":"10.1039/D4NH90079K","url":null,"abstract":"<p >Our Emerging Investigator Series features exceptional work by early-career nanoscience and nanotechnology researchers. Read Mita Dasog's Emerging Investigator Series article ‘Unlocking the secrets of porous silicon formation: insights into magnesiothermic reduction mechanism using <em>in situ</em> powder X-ray diffraction studies’ (https://doi.org/10.1039/D4NH00244J) and read more about her in the interview below.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 2","pages":" 203-204"},"PeriodicalIF":8.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Expression of concern: Carbon quantum dots as a dual platform for the inhibition and light-based destruction of collagen fibers: implications for the treatment of eye floaters","authors":"Alexandre Barras, Félix Sauvage, Inès de Hoon, Kevin Braeckmans, Dawei Hua, Gaëtan Buvat, Juan C. Fraire, Christophe Lethien, J. Sebag, Michael Harrington, Amar Abderrahmani, Rabah Boukherroub, Stefaan De Smedt and Sabine Szunerits","doi":"10.1039/D4NH90078B","DOIUrl":"10.1039/D4NH90078B","url":null,"abstract":"<p >Expression of concern for ‘Carbon quantum dots as a dual platform for the inhibition and light-based destruction of collagen fibers: implications for the treatment of eye floaters’ by Alexandre Barras <em>et al.</em>, <em>Nanoscale Horiz.</em>, 2021, <strong>6</strong>, 449–461, https://doi.org/10.1039/D1NH00157D.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 2","pages":" 409-409"},"PeriodicalIF":8.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/nh/d4nh90078b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tailoring catalysis at the atomic level: trends and breakthroughs in single atom catalysts for organic transformation reactions","authors":"Devendra Sharma, Devanshu Sajwan, Shubhankar Mishra, Ashrumochan Gouda, Prerna Mittal, Priyanka Choudhary, Bhagyashree Priyadarshini Mishra, Sahil Kumar and Venkata Krishnan","doi":"10.1039/D4NH00479E","DOIUrl":"10.1039/D4NH00479E","url":null,"abstract":"<p >The utilization of precise materials in heterogeneous catalysis will provide various new possibilities for developing superior catalysts to tackle worldwide energy and environmental issues. In recent years, single atom catalysts (SACs) with excellent atom utilization and isolated active sites have progressed dramatically as a thriving sector of catalysis research. Additionally, SACs bridge the gap between homogeneous and heterogeneous catalysts and overcome the limitations of both categories. Current research on SACs is highly oriented towards the organic synthesis of high-significance molecules with promising potential for large-scale applicability and industrialization. In this context, this review aims to comprehensively analyze the state-of-the-art research in the synthesis of SACs and analyze their structural, electronic, and geometric properties. Moreover, the unprecedented catalytic performance of the SACs towards various organic transformation reactions is succinctly summarized with recent reports. Further, a detailed summary of the current state of the research field of SACs in organic transformation is discussed. Finally, a critical analysis of the existing challenges in this emerging field of SACs and the possible countermeasures are provided. We believe that SACs have the potential to profoundly alter the chemical industry, pushing the boundaries of catalysis in new and undiscovered territory.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 3","pages":" 423-459"},"PeriodicalIF":8.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spintronic devices and applications using noncollinear chiral antiferromagnets†","authors":"Ankit Shukla, Siyuan Qian and Shaloo Rakheja","doi":"10.1039/D4NH00045E","DOIUrl":"10.1039/D4NH00045E","url":null,"abstract":"<p >Antiferromagnetic materials have several unique properties, such as a vanishingly small net magnetization, which generates weak dipolar fields and makes them robust against perturbation from external magnetic fields and rapid magnetization dynamics, as dictated by the geometric mean of their exchange and anisotropy energies. However, experimental and theoretical techniques to detect and manipulate the antiferromagnetic order in a fully electrical manner must be developed to enable advanced spintronic devices with antiferromagnets as their active spin-dependent elements. Among the various antiferromagnetic materials, conducting antiferromagnets offer high electrical and thermal conductivities and strong electron–spin–phonon interactions. Noncollinear metallic antiferromagnets with negative chirality, including Mn<small>₃</small>Sn, Mn<small>₃</small>Ge, and Mn<small>₃</small>GaN, offer rich physics of spin momentum locking, topologically protected surface states, large spin Hall conductivity, and a magnetic spin Hall effect that arises from their topology. In this review article, we introduce the crystal structure and the physical phenomena, including the anomalous Hall and Nernst effects, spin Hall effect, and magneto-optic Kerr effect, observed in negative chirality antiferromagnets. Experimental advances related to spin–orbit torque-induced dynamics and the impact of the torque on the microscopic spin structure of Mn<small>₃</small>Sn are also discussed. Recent experimental demonstrations of a finite room-temperature tunneling magnetoresistance in tunnel junctions with chiral antiferromagnets opens the prospect of developing spintronic devices with fully electrical readout. Applications of chiral antiferromagnets, including non-volatile memory, high-frequency signal generators/detectors, neuro-synaptic emulators, probabilistic bits, thermoelectric devices, and Josephson junctions, are highlighted. We also present analytic models that relate the performance characteristics of the device with its design parameters, thus enabling a rapid technology–device assessment. Effects of Joule heating and thermal noise on the device characteristics are briefly discussed. We close the paper by summarizing the status of research and present our outlook in this rapidly evolving research field.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 3","pages":" 484-511"},"PeriodicalIF":8.0,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Record-high hyperpolarizabilities in atomically precise single metal-doped silver nanoclusters†","authors":"Hao Yuan, Isabelle Russier-Antoine, Christophe Moulin, Pierre-François Brevet, Željka Sanader Maršić, Martina Perić Bakulić, Xi Kang, Rodolphe Antoine and Manzhou Zhu","doi":"10.1039/D4NH00454J","DOIUrl":"10.1039/D4NH00454J","url":null,"abstract":"<p >Recent developments in optical imaging techniques, particularly multi-photon excitation microscopy that allows studies of biological interactions at a deep cellular level, have motivated intensive research in developing multi-photon absorption fluorophores. Biological tissues are optically transparent in the near-infrared region. Therefore, fluorophores that can absorb light in the near-infrared (NIR) region by multi-photon absorption are particularly useful in bio-imaging. For instance, photoluminescence from ligand-protected gold nanoclusters has drawn extensive research interest in the past decade due to their bright, non-blinking, stable emission and tunability from the blue to the NIR emission. In this work, using the control of single metal doping on silver nanoclusters (Ag<small>₂₅</small> protected by thiolate SR = 2,4-dimethylbenzenethiol (DMBT) ligand), we aim to explore the effects of metal doping on the (photo)stability and nonlinear optical response of liganded nanoclusters. We study two-photon excited photoluminescence and the second harmonic response upon excitation in the NIR (780–950 nm) range. Particular emphasis is placed on the effect of metal doping on the second-order nonlinear optical scattering properties (first hyperpolarizability, <em>β</em>(2<em>ω</em>)) of Ag<small>₂₅</small> nanoclusters. In addition, <em>β</em>(2<em>ω</em>) values are one order higher than the one reported for Au<small>₂₅</small> nanoclusters and represent the largest values ever reported for ligand-protected nanoclusters. Such enhanced hyperpolarizability leads to a strong second harmonic response and renders them attractive targets in bioimaging.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 2","pages":" 314-321"},"PeriodicalIF":8.0,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular-scale in-operando reconfigurable electronic hardware†","authors":"Yulong Wang, Qian Zhang, Cameron Nickle, Ziyu Zhang, Andrea Leoncini, Dong-Chen Qi, Alessandro Borrini, Yingmei Han, Enrique del Barco, Damien Thompson and Christian A. Nijhuis","doi":"10.1039/D4NH00211C","DOIUrl":"10.1039/D4NH00211C","url":null,"abstract":"<p >It is challenging to reconfigure devices at molecular length scales. Here we report molecular junctions based on molecular switches that toggle stably and reliably between multiple operations to reconfigure electronic devices at molecular length scales. Rather than static on/off switches that always revert to the same state, our voltage-driven molecular device dynamically switches between high and low conduction states during six consecutive proton-coupled electron transfer steps. By changing the applied voltage, different states are accessed resulting in <em>in operando</em> reconfigurable electronic functionalities of variable resistor, diode, memory, and NDR (negative differential conductance). The switching behavior is voltage driven but also has time-dependent features making it possible to access different memory states. This multi-functional switch represents molecular scale hardware operable in solid-state devices (in the form of electrode–monolayer–electrode junctions) that are interesting for areas of research where it is important to have access to time-dependent changes such as brain-inspired (or neuromorphic) electronics.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 2","pages":" 349-358"},"PeriodicalIF":8.0,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11623307/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revolutionizing healthcare: inorganic medicinal nanoarchitectonics for advanced theranostics","authors":"Seungjin Yu, N. Sanoj Rejinold, Goeun Choi and Jin-Ho Choy","doi":"10.1039/D4NH00497C","DOIUrl":"10.1039/D4NH00497C","url":null,"abstract":"<p >Over the last two decades, advancements in nanomaterials and nanoscience have paved the path for the emergence of nano-medical convergence science, significantly impacting healthcare. In our review, we highlight how these advancements are applied in various biomedical technologies such as drug delivery systems, bio-imaging for diagnostic and therapeutic purposes. Recently, novel inorganic nanohybrid drugs have been developed, combining multifunctional inorganic nanomaterials with therapeutic agents (known as inorganic medicinal nanoarchitectonics). These innovative drugs are actively utilized in cutting-edge medical treatments, including targeted anti-cancer therapy, photo and radiation therapy, and immunotherapy. This review provides a detailed overview of the current development status of inorganic medicinal nanoarchitectonics and explores potential future directions in their advancements.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 3","pages":" 460-483"},"PeriodicalIF":8.0,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanism of oxygen reduction via chemical affinity in NiO/SiO2 interfaces irradiated with keV energy hydrogen and helium ions for heterostructure fabrication†","authors":"Mario Mery, Claudio Gonzalez-Fuentes, Igor Stanković, Jorge M. Nuñez, Jorge E. Valdés, Myriam H. Aguirre and Carlos García","doi":"10.1039/D4NH00460D","DOIUrl":"10.1039/D4NH00460D","url":null,"abstract":"<p >Low-energy light ion beams are an essential resource in lithography for nanopatterning magnetic materials and interfaces due to their ability to modify the structure and properties of metamaterials. Here we create ferromagnetic/non-ferromagnetic heterostructures with a controlled layer thickness and nanometer-scale precision. For this, hydrogen ion (H<small>⁺</small>) irradiation is used to reduce the antiferromagnetic nickel oxide (NiO) layer into ferromagnetic Ni with lower fluence than in the case of helium ion (He<small>⁺</small>) irradiation. Our results indicate that H<small>⁺</small> chemical affinity with oxygen is the primary mechanism for efficient atom remotion, as opposed to He<small>⁺</small> irradiation, where the chemical affinity for oxygen is negligible.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 3","pages":" 568-575"},"PeriodicalIF":8.0,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142913305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}