Nanoscale Horizons最新文献

{"title":"White light powered antimicrobial nanoagents for triple photothermal, chemodynamic and photodynamic based sterilization†","authors":"Hua Tian, Houjuan Zhu, Yuling Xue, Maonan Wang, Kuoran Xing, Zibiao Li, Xian Jun Loh, Enyi Ye, Xianguang Ding, Bang Lin Li, Xueqiong Yin and David Tai Leong","doi":"10.1039/D4NH00060A","DOIUrl":"10.1039/D4NH00060A","url":null,"abstract":"<p >Antibacterial nanoagents have been increasingly developed due to their favorable biocompatibility, cost-effective raw materials, and alternative chemical or optical properties. Nevertheless, there is still a pressing need for antibacterial nanoagents that exhibit outstanding bacteria-binding capabilities and high antibacterial efficiency. In this study, we constructed a multifunctional cascade bioreactor (GCDCO) as a novel antibacterial agent. This involved incorporating carbon dots (CDs), cobalt sulfide quantum dots (CoS<small>_<em>x</em></small> QDs), and glucose oxidase (GOx) to enhance bacterial inhibition under sunlight irradiation. The GCDCO demonstrated highly efficient antibacterial capabilities attributed to its favorable photothermal properties, photodynamic activity, as well as the synergistic effects of hyperthermia, glucose-augmented chemodynamic action, and additional photodynamic activity. Within this cascade bioreactor, CDs played the role of a photosensitizer for photodynamic therapy (PDT), capable of generating ˙O<small>₂</small><small>⁻</small> even under solar light irradiation. The CoS<small>_<em>x</em></small> QDs not only functioned as a catalytic component to decompose hydrogen peroxide (H<small>₂</small>O<small>₂</small>) and generate hydroxyl radicals (˙OH), but they also served as heat generators to enhance the Fenton-like catalysis process. Furthermore, GOx was incorporated into this cascade bioreactor to internally supply H<small>₂</small>O<small>₂</small> by consuming glucose for a Fenton-like reaction. As a result, GCDCO could generate a substantial amount of reactive oxygen species (ROS), leading to a significant synergistic effect that greatly induced bacterial death. Furthermore, the <em>in vitro</em> antibacterial experiment revealed that GCDCO displayed notably enhanced antibacterial activity against <em>E. coli</em> (99+ %) when combined with glucose under simulated sunlight, surpassing the efficacy of the individual components. This underscores its remarkable efficiency in combating bacterial growth. Taken together, our GCDCO demonstrates significant potential for use in the routine treatment of skin infections among diabetic patients.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/nh/d4nh00060a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140888404","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":"In vitro nanomaterial testing: unveiling biases through biomolecular corona influence†","authors":"Fangfang Cao","doi":"10.1039/D4NH90039A","DOIUrl":"10.1039/D4NH90039A","url":null,"abstract":"<p >This article highlights the recent work of Castagnola, Armirotti, <em>et al.</em> (<em>Nanoscale Horiz.</em>, 2024, https://doi.org/10.1039/D3NH00510K) on demonstrating that the widespread use of 10% fetal bovine serum in an <em>in vitro</em> assay cannot recapitulate the complexity of <em>in vivo</em> systemic administration.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140827153","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":"Interface of gallium-based liquid metals: oxide skin, wetting, and applications","authors":"Ji-Hye Kim, Sooyoung Kim, Michael D. Dickey, Ju-Hee So and Hyung-Jun Koo","doi":"10.1039/D4NH00067F","DOIUrl":"10.1039/D4NH00067F","url":null,"abstract":"<p >Gallium-based liquid metals (GaLMs) are promising for a variety of applications-especially as a component material for soft devices-due to their fluidic nature, low toxicity and reactivity, and high electrical and thermal conductivity comparable to solid counterparts. Understanding the interfacial properties and behaviors of GaLMs in different environments is crucial for most applications. When exposed to air or water, GaLMs form a gallium oxide layer with nanoscale thickness. This “oxide nano-skin” passivates the metal surface and allows for the formation of stable microstructures and films despite the high-surface tension of liquid metal. The oxide skin easily adheres to most smooth surfaces. While it enables effective printing and patterning of the GaLMs, it can also make the metals challenging to handle because it adheres to most surfaces. The oxide also affects the interfacial electrical resistance of the metals. Its formation, thickness, and composition can be chemically or electrochemically controlled, altering the physical, chemical, and electrical properties of the metal interface. Without the oxide, GaLMs wet metallic surfaces but do not wet non-metallic substrates such as polymers. The topography of the underlying surface further influences the wetting characteristics of the metals. This review outlines the interfacial attributes of GaLMs in air, water, and other environments and discusses relevant applications based on interfacial engineering. The effect of surface topography on the wetting behaviors of the GaLMs is also discussed. Finally, we suggest important research topics for a better understanding of the GaLMs interface.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140827154","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 2023 Outstanding Paper Award","authors":"","doi":"10.1039/D4NH90038C","DOIUrl":"10.1039/D4NH90038C","url":null,"abstract":"<p >Recognizing some of the outstanding work published in <em>Nanoscale Horizons</em> in 2023, as well as the authors behind those articles. Discover our winners and their outstanding articles below.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140809923","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 Baisheng Sa, Fuzhou University, China","authors":"","doi":"10.1039/D4NH90036G","DOIUrl":"10.1039/D4NH90036G","url":null,"abstract":"<p >Our Emerging Investigator Series features exceptional work by early-career nanoscience and nanotechnology researchers. Read Baisheng Sa’s Emerging Investigator Series article ‘Contact engineering for 2D Janus MoSSe/metal junctions’ (https://doi.org/10.1039/D3NH00450C) and read more about him in the interview below.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140656070","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":"Correction: Pickering emulsion templated proteinaceous microparticles as glutathione-responsive carriers for endocytosis in tumor cells","authors":"Weijie Jiang, Xin Guan, Wei Liu, Yunxing Li, Hang Jiang and To Ngai","doi":"10.1039/D4NH90037E","DOIUrl":"10.1039/D4NH90037E","url":null,"abstract":"<p >Correction for ‘Pickering emulsion templated proteinaceous microparticles as glutathione-responsive carriers for endocytosis in tumor cells’ by Weijie Jiang <em>et al.</em>, <em>Nanoscale Horiz.</em>, 2024, <strong>9</strong>, 536–543, https://doi.org/10.1039/D3NH00551H.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/nh/d4nh90037e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140664568","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":"Direct observation of split-mode exciton-polaritons in a single MoS2 nanotube†","authors":"A. I. Galimov, D. R. Kazanov, A. V. Poshakinskiy, M. V. Rakhlin, I. A. Eliseyev, A. A. Toropov, M. Remškar and T. V. Shubina","doi":"10.1039/D4NH00052H","DOIUrl":"10.1039/D4NH00052H","url":null,"abstract":"<p >A single nanotube synthesized from a transition metal dichalcogenide (TMDC) exhibits strong exciton resonances and, in addition, can support optical whispering gallery modes. This combination is promising for observing exciton-polaritons without an external cavity. However, traditional energy-momentum-resolved detection methods are unsuitable for this tiny object. Instead, we propose to use split optical modes in a twisted nanotube with the flattened cross-section, where a gradually decreasing gap between the opposite walls leads to a change in mode energy, similar to the effect of the barrier width on the eigenenergies in the double-well potential. Using micro-reflectance spectroscopy, we investigated the rich pattern of polariton branches in single MoS<small>₂</small> tubes with both variable and constant gaps. Observed Rabi splitting in the 40–60 meV range is comparable to that for a MoS<small>₂</small> monolayer in a microcavity. Our results, based on the polariton dispersion measurements and polariton dynamics analysis, present a single TMDC nanotube as a perfect polaritonic structure for nanophotonics.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140637010","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":"Flame emission spectroscopy of single droplet micro explosions†","authors":"Jan Derk Groeneveld, Suman Pokhrel and Lutz Mädler","doi":"10.1039/D3NH00558E","DOIUrl":"10.1039/D3NH00558E","url":null,"abstract":"<p >Nanoparticles exhibit superior physical and chemical properties, making them highly desirable for various applications. Flame spray pyrolysis (FSP) is a versatile technique for synthesizing size and composition-controlled metal oxide/sulfide nanoparticles through a gas-phase reaction. To understand the fundamental mechanisms governing nanoparticle formation in FSP, simplified single-droplet experiments have proven to unravel the physicochemical mechanisms of liquid metal precursor combustions. This work introduces a novel method using flame emission spectroscopy and high-speed imaging to analyze combustion species and metal release during metalorganic single droplet combustions, with the example of the 2-ethylhexanoci acid (EHA)–tetrahydrothiophene (THT)–mesitylcopper (MiCu) precursor system. The method enables the tracing of precursor components released from droplet into the flame by spatial and temporal resolved emission tracking from combustion species (OH*, CH*, C<small>₂</small>*, CS*, CS<small>₂</small>*) and atomic spectral lines (Cu I). The tracking of metal emission enables the direct observation of the particle formation route, offering novel insights into the metalorganic precursor combustions. The findings of this work show a direct correlation between micro-explosions and nanoparticle formation through the gas-to-particle route. The release of copper emissions is observed with the micro-explosion event, marking the micro-explosions as the critical mechanism for the metal release and subsequent nanoparticle formation during the combustion process. The results indicate a metalorganic viscous shell formation (THT + MiCu) leading to the micro explosion. The EHA/THT ratio significantly affects the combustion behavior. Lower ratios lead to a gradual copper release before the micro explosion; higher ratios shorten the copper release and delay the micro explosion – the highest ratio results in two distinct burning stages.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/nh/d3nh00558e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140612333","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":"Ethanol purification enables high-quality α-phase FAPbI3 perovskite microcrystals for commercial photovoltaic applications†","authors":"Hyun Seo Kim, Hyun-Sung Yun, Chae-Eun Seo, Soo Bin Yoo, Bong Joo Kang, Eui Hyuk Jung and Nam Joong Jeon","doi":"10.1039/D4NH00061G","DOIUrl":"10.1039/D4NH00061G","url":null,"abstract":"<p >Reliable quality and sustainable processes must be developed for commodities to enter the commercial stage. For next-generation photovoltaic applications such as perovskite solar cells, it is essential to manufacture high-quality photoactive perovskites <em>via</em> eco-friendly processes. We demonstrate that ethanol, an ideal green solvent, can be applied to yield efficient alpha-phase FAPbI<small>₃</small> perovskite microcrystals.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140612343","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":"Integrating ultraviolet sensing and memory functions in gallium nitride-based optoelectronic devices†","authors":"Kuan-Chang Chang, Xibei Feng, Xinqing Duan, Huangbai Liu, Yanxin Liu, Zehui Peng, Xinnan Lin and Lei Li","doi":"10.1039/D3NH00560G","DOIUrl":"10.1039/D3NH00560G","url":null,"abstract":"<p >Optoelectronic devices present a promising avenue for emulating the human visual system. However, existing devices struggle to maintain optical image information after removing external stimuli, preventing the integration of image perception and memory. The development of optoelectronic memory devices offers a feasible solution to bridge this gap. Simultaneously, the artificial vision for perceiving and storing ultraviolet (UV) images is particularly important because UV light carries information imperceptible to the naked eye. This study introduces a multi-level UV optoelectronic memory based on gallium nitride (GaN), seamlessly integrating UV sensing and memory functions within a single device. The embedded SiO<small>₂</small> side-gates around source and drain regions effectively extend the lifetime of photo-generated carriers, enabling dual-mode storage of UV signals in terms of threshold voltage and ON-state current. The optoelectronic memory demonstrates excellent robustness with the retention time exceeding 4 × 10<small>⁴</small> s and programming/erasing cycles surpassing 1 × 10<small>⁵</small>. Adjusting the gate voltage achieves five distinct storage states, each characterized by excellent retention, and efficiently modulates erasure times for rapid erasure. Furthermore, the integration of the GaN optoelectronic memory array successfully captures and stably stores specific UV images for over 7 days. The study marks a significant stride in optoelectronic memories, showcasing their potential in applications requiring prolonged retention.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140580811","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}