ACS Nanoscience Au最新文献_第9页

Graphene and Beyond: Recent Advances in Two-Dimensional Materials Synthesis, Properties, and Devices 石墨烯及其以外:二维材料合成、性质和器件的最新进展

ACS Nanoscience Au Pub Date : 2022-09-16 DOI: 10.1021/acsnanoscienceau.2c00017

Yu Lei, Tianyi Zhang, Yu-Chuan Lin, Tomotaroh Granzier-Nakajima, George Bepete, Dorota A. Kowalczyk, Zhong Lin, Da Zhou, Thomas F. Schranghamer, Akhil Dodda, Amritanand Sebastian, Yifeng Chen, Yuanyue Liu, Geoffrey Pourtois, Thomas J. Kempa, Bruno Schuler, Mark T. Edmonds, Su Ying Quek, Ursula Wurstbauer, Stephen M. Wu, Nicholas R. Glavin, Saptarshi Das, Saroj Prasad Dash, Joan M. Redwing, Joshua A. Robinson* and Mauricio Terrones*,

{"title":"Graphene and Beyond: Recent Advances in Two-Dimensional Materials Synthesis, Properties, and Devices","authors":"Yu Lei, Tianyi Zhang, Yu-Chuan Lin, Tomotaroh Granzier-Nakajima, George Bepete, Dorota A. Kowalczyk, Zhong Lin, Da Zhou, Thomas F. Schranghamer, Akhil Dodda, Amritanand Sebastian, Yifeng Chen, Yuanyue Liu, Geoffrey Pourtois, Thomas J. Kempa, Bruno Schuler, Mark T. Edmonds, Su Ying Quek, Ursula Wurstbauer, Stephen M. Wu, Nicholas R. Glavin, Saptarshi Das, Saroj Prasad Dash, Joan M. Redwing, Joshua A. Robinson* and Mauricio Terrones*, ","doi":"10.1021/acsnanoscienceau.2c00017","DOIUrl":"10.1021/acsnanoscienceau.2c00017","url":null,"abstract":"Since the isolation of graphene in 2004, two-dimensional (2D) materials research has rapidly evolved into an entire subdiscipline in the physical sciences with a wide range of emergent applications. The unique 2D structure offers an open canvas to tailor and functionalize 2D materials through layer number, defects, morphology, moiré pattern, strain, and other control knobs. Through this review, we aim to highlight the most recent discoveries in the following topics: theory-guided synthesis for enhanced control of 2D morphologies, quality, yield, as well as insights toward novel 2D materials; defect engineering to control and understand the role of various defects, including in situ and ex situ methods; and properties and applications that are related to moiré engineering, strain engineering, and artificial intelligence. Finally, we also provide our perspective on the challenges and opportunities in this fascinating field.","PeriodicalId":29799,"journal":{"name":"ACS Nanoscience Au","volume":"2 6","pages":"450–485"},"PeriodicalIF":0.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/20/7e/ng2c00017.PMC9782807.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9339529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

High-Performance Indium–Tin Oxide (ITO) Electrode Enabled by a Counteranion-Free Metal–Polymer Complex 由无反阴离子金属-聚合物络合物实现的高性能氧化铟锡(ITO)电极

ACS Nanoscience Au Pub Date : 2022-08-31 DOI: 10.1021/acsnanoscienceau.2c00027

Gyeongbae Park, Dongbeom Kim, Geonwoo Kim and Unyong Jeong*,

{"title":"High-Performance Indium–Tin Oxide (ITO) Electrode Enabled by a Counteranion-Free Metal–Polymer Complex","authors":"Gyeongbae Park, Dongbeom Kim, Geonwoo Kim and Unyong Jeong*, ","doi":"10.1021/acsnanoscienceau.2c00027","DOIUrl":"10.1021/acsnanoscienceau.2c00027","url":null,"abstract":"Although multicomponent inorganic thin films (metal-oxides, -carbides, -nitrides, and -chalcogenides) have been synthesized by polymer-assisted deposition (PAD), synthesis of high-performance transparent conducting oxides (TCOs) has been rarely reported. TCO requires (i) removal of impurities, (ii) high-density oxide film, (iii) homogeneity in crystal structures and film morphology, and (iv) controllable elemental doping. This study performs a systematic investigation on preparation of stable multicomponent metal–polymer complex solutions by removing the counteranions in the solution. This study also proposes accurate acid–base titration for each metal species in order to minimize the amount of PEI, thus maximizing the density of the film. As a representative TCO, Sn-doped In2O3 (ITO) films have been achieved. The ITO film has an excellent sheet resistance (24.5 Ω/sq) at 93% optical transparency, with a figure of merit of 2.1 × 10–2 Ω–1, which is comparable to the best.","PeriodicalId":29799,"journal":{"name":"ACS Nanoscience Au","volume":"2 6","pages":"527–538"},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/58/c4/ng2c00027.PMC10125366.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9349331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Observation of the Multilayer Growth Mode in Ternary InGaAs Nanowires 三元InGaAs纳米线多层生长模式的观察

ACS Nanoscience Au Pub Date : 2022-08-30 DOI: 10.1021/acsnanoscienceau.2c00028

Robin Sjökvist*, Marcus Tornberg, Mikelis Marnauza, Daniel Jacobsson and Kimberly A. Dick,

{"title":"Observation of the Multilayer Growth Mode in Ternary InGaAs Nanowires","authors":"Robin Sjökvist*, Marcus Tornberg, Mikelis Marnauza, Daniel Jacobsson and Kimberly A. Dick, ","doi":"10.1021/acsnanoscienceau.2c00028","DOIUrl":"10.1021/acsnanoscienceau.2c00028","url":null,"abstract":"Au-seeded semiconductor nanowires have classically been considered to only grow in a layer-by-layer growth mode, where individual layers nucleate and grow one at a time with an incubation step in between. Recent in situ investigations have shown that there are circumstances where binary semiconductor nanowires grow in a multilayer fashion, creating a stack of incomplete layers at the interface between a nanoparticle and a nanowire. In the current investigation, the growth behavior in ternary InGaAs nanowires has been analyzed in situ, using environmental transmission electron microscopy. The investigation has revealed that multilayer growth also occurs for ternary nanowires and appears to be more common than in the binary case. In addition, the size of the multilayer stacks observed is much larger than what has been reported previously. The investigation details the implications of multilayers for the overall growth of the nanowires, as well as the surrounding conditions under which it has manifested. We show that multilayer growth is highly dynamic, where the stack of layers regularly changes size by transporting material between the growing layers. Another observation is that multilayer growth can be initiated in conjunction with the formation of crystallographic defects and compositional changes. In addition, the role that multilayers can have in behaviors such as growth failure and kinking, sometimes observed when creating heterostructures between GaAs and InAs ex situ, is discussed. The prevalence of multilayer growth in this ternary material system implies that, in order to fully understand and accurately predict the growth of nanowires of complex composition and structure, multilayer growth has to be considered.","PeriodicalId":29799,"journal":{"name":"ACS Nanoscience Au","volume":"2 6","pages":"539–548"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10125347/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9711182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Homogeneous Nanoparticles of Multimetallic Phosphides via Precursor Tuning: Ternary and Quaternary M2P Phases (M = Fe, Co, Ni) 通过前体调节的多金属磷酸盐的均匀纳米颗粒：三元和四元M2P相（M=Fe，Co，Ni）

ACS Nanoscience Au Pub Date : 2022-08-09 DOI: 10.1021/acsnanoscienceau.2c00025

Tepora Su’a, Mikaylah N. Poli and Stephanie L. Brock*,

{"title":"Homogeneous Nanoparticles of Multimetallic Phosphides via Precursor Tuning: Ternary and Quaternary M2P Phases (M = Fe, Co, Ni)","authors":"Tepora Su’a, Mikaylah N. Poli and Stephanie L. Brock*, ","doi":"10.1021/acsnanoscienceau.2c00025","DOIUrl":"https://doi.org/10.1021/acsnanoscienceau.2c00025","url":null,"abstract":"Transition metal phosphides (TMPs) are a highly investigated class of nanomaterials due to their unique magnetic and catalytic properties. Although robust and reproducible synthetic routes to narrow polydispersity monometallic phosphide nanoparticles (M2P; M = Fe, Co, Ni) have been established, the preparation of multimetallic nanoparticle phases (M2–xM′xP; M, M′ = Fe, Co, Ni) remains a significant challenge. Colloidal syntheses employ zero-valent metal carbonyl or multivalent acetylacetonate salt precursors in combination with trioctylphosphine as the source of phosphorus, oleylamine as the reducing agent, and additional solvents such as octadecene or octyl ether as “noncoordinating” cosolvents. Understanding how these different metal precursors behave in identical reaction environments is critical to assessing the role the relative reactivity of the metal precursor plays in synthesizing complex, homogeneous multimetallic TMP phases. In this study, phosphorus incorporation as a function of temperature and time was evaluated to probe how the relative rate of phosphidation of organometallic carbonyl and acetylacetonate salt precursors influences the homogeneous formation of bimetallic phosphide phases (M2–xM′xP; M, M′ = Fe, Co, Ni). From the relative rate of phosphidation studies, we found that where reactivity with TOP for the various metal precursors differs significantly, prealloying steps are necessary to isolate the desired bimetallic phosphide phase. These insights were then translated to establish streamlined synthetic protocols for the formation of new trimetallic Fe2–x–yNixCoyP phases.","PeriodicalId":29799,"journal":{"name":"ACS Nanoscience Au","volume":"2 6","pages":"503–519"},"PeriodicalIF":0.0,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsnanoscienceau.2c00025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71557350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Guiding the High-Yield Synthesis of NHC-Ligated Gold Nanoclusters by 19F NMR Spectroscopy 用19F NMR光谱指导高产率合成NHC连接的金纳米团簇

ACS Nanoscience Au Pub Date : 2022-08-09 DOI: 10.1021/acsnanoscienceau.2c00026

Hui Shen, Xiongkai Tang, Qingyuan Wu, Yuhao Zhang, Chuxin Ma, Zhen Xu, Boon K. Teo and Nanfeng Zheng*,

{"title":"Guiding the High-Yield Synthesis of NHC-Ligated Gold Nanoclusters by 19F NMR Spectroscopy","authors":"Hui Shen, Xiongkai Tang, Qingyuan Wu, Yuhao Zhang, Chuxin Ma, Zhen Xu, Boon K. Teo and Nanfeng Zheng*, ","doi":"10.1021/acsnanoscienceau.2c00026","DOIUrl":"https://doi.org/10.1021/acsnanoscienceau.2c00026","url":null,"abstract":"Optimizing the synthesis of atomically precise metal nanoclusters by virtue of molecular tools is highly desirable but quite challenging. Herein we report how 19F NMR spectroscopy can be used to guide the high-yield synthesis of N-heterocyclic carbene (NHC)-stabilized gold nanoclusters. In spite of little difference, 19F NMR signals of fluoro-incorporated NHCs (FNHC) are highly sensitive to the tiny change in their surrounding chemical environments with different N-substituents, metals, or anions, thus providing a convenient strategy to discriminate species in reaction mixtures. By using 19F NMR, we first disclosed that the one-pot reduction of FNHC-Au-X (X is halide) yields multiple compounds, including cluster compounds and also a large amount of highly stable [Au(FNHC)2]+ byproduct. The detailed quantitative 19F NMR analyses over the reductive synthesis of NHC-stabilized Au nanoclusters reveal that the formation of the di-NHC complex is deleterious to the high-yield synthesis of NHC-stabilized Au nanoclusters. With the understanding, the reaction kinetic was then slowed by controlling the reduction rate to achieve the high yield of a [Au24(FNHC)14X2H3]3+ nanocluster with a unique structure. The strategy demonstrated in this work is expected to provide an effective tool to guide the high-yield synthesis of organic ligand-stabilized metal nanoclusters.","PeriodicalId":29799,"journal":{"name":"ACS Nanoscience Au","volume":"2 6","pages":"520–526"},"PeriodicalIF":0.0,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsnanoscienceau.2c00026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71557351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Influence of Cell Type on the Efficacy of Plasmonic Photothermal Therapy 细胞类型对等离子体光热治疗效果的影响

ACS Nanoscience Au Pub Date : 2022-07-27 DOI: 10.1021/acsnanoscienceau.2c00023

Helena Villuendas, Clara Vilches* and Romain Quidant*,

引用次数: 2

Increase Your Impact: Writing Tips to Reach a Broader Audience 增加你的影响力:写作技巧，以达到更广泛的受众

ACS Nanoscience Au Pub Date : 2022-07-26 DOI: 10.1021/acsnanoscienceau.2c00030

Raymond E. Schaak*,

引用次数: 1

Inverse-Designed Metaphotonics for Hypersensitive Detection 超敏检测的反设计变形学

ACS Nanoscience Au Pub Date : 2022-07-25 DOI: 10.1021/acsnanoscienceau.2c00009

Maxim Elizarov, Yuri S. Kivshar and Andrea Fratalocchi*,

{"title":"Inverse-Designed Metaphotonics for Hypersensitive Detection","authors":"Maxim Elizarov, Yuri S. Kivshar and Andrea Fratalocchi*, ","doi":"10.1021/acsnanoscienceau.2c00009","DOIUrl":"10.1021/acsnanoscienceau.2c00009","url":null,"abstract":"Controlling the flow of broadband electromagnetic energy at the nanoscale remains a critical challenge in optoelectronics. Surface plasmon polaritons (or plasmons) provide subwavelength localization of light but are affected by significant losses. On the contrary, dielectrics lack a sufficiently robust response in the visible to trap photons similar to metallic structures. Overcoming these limitations appears elusive. Here we demonstrate that addressing this problem is possible if we employ a novel approach based on suitably deformed reflective metaphotonic structures. The complex geometrical shape engineered in these reflectors emulates nondispersive index responses, which can be inverse-designed following arbitrary form factors. We discuss the realization of essential components such as resonators with an ultrahigh refractive index of n = 100 in diverse profiles. These structures support the localization of light in the form of bound states in the continuum (BIC), fully localized in air, in a platform in which all refractive index regions are physically accessible. We discuss our approach to sensing applications, designing a class of sensors where the analyte directly contacts areas of ultrahigh refractive index. Leveraging this feature, we report an optical sensor with sensitivity two times higher than the closest competitor with a similar micrometer footprint. Inversely designed reflective metaphotonics offers a flexible technology for controlling broadband light, supporting optoelectronics’ integration with large bandwidths in circuitry with miniaturized footprints.","PeriodicalId":29799,"journal":{"name":"ACS Nanoscience Au","volume":"2 5","pages":"422–432"},"PeriodicalIF":0.0,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/59/11/ng2c00009.PMC10125296.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9357329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

White-Light Spectral Interferometry for Characterizing Inhomogeneity in Solutions and Nanocolloids 白光光谱干涉法表征溶液和纳米胶体中的不均匀性

ACS Nanoscience Au Pub Date : 2022-07-18 DOI: 10.1021/acsnanoscienceau.2c00014

Aparna Praturi, Stefan Schrod, Bhanu Pratap Singh and Parinda Vasa*,

引用次数: 0

Termination-Property Coupling via Reversible Oxygen Functionalization of MXenes 通过可逆氧官能化MXenes的终止-性质耦合

ACS Nanoscience Au Pub Date : 2022-06-28 DOI: 10.1021/acsnanoscienceau.2c00024

James L. Hart, Kanit Hantanasirisakul, Yury Gogotsi and Mitra L. Taheri*,

{"title":"Termination-Property Coupling via Reversible Oxygen Functionalization of MXenes","authors":"James L. Hart, Kanit Hantanasirisakul, Yury Gogotsi and Mitra L. Taheri*, ","doi":"10.1021/acsnanoscienceau.2c00024","DOIUrl":"10.1021/acsnanoscienceau.2c00024","url":null,"abstract":"MXenes are a growing family of 2D transition-metal carbides and nitrides, which display excellent performance in myriad of applications. Theoretical calculations suggest that manipulation of the MXene surface termination (such as ═O or −F) could strongly alter their functional properties; however, experimental control of the MXene surface termination is still in the developmental stage. Here, we demonstrate that annealing MXenes in an Ar + O2 low-power plasma results in increased ═O functionalization with minimal formation of secondary phases. We apply this method to two MXenes, Ti2CTx and Mo2TiC2Tx (Tx represents the mixed surface termination), and show that in both cases, the increased ═O content increases the electrical resistance and decreases the surface transition-metal’s electron count. For Mo2TiC2Ox, we show that the O content can be reversibly altered through successive vacuum and plasma annealing. This work provides an effective way to tune MXene surface functionalization, which may unlock exciting surface-dependent properties.","PeriodicalId":29799,"journal":{"name":"ACS Nanoscience Au","volume":"2 5","pages":"433–439"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/54/75/ng2c00024.PMC9585631.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40658048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4