Nanoscale Horizons最新文献_第10页

Orientation–polarization dependence of pressure-induced Raman anomalies in anisotropic 2D ReS2† 各向异性二维ReS2†中压力诱导拉曼异常的取向极化依赖性

IF 9.7 2区材料科学

Nanoscale Horizons Pub Date : 2023-02-07 DOI: 10.1039/D2NH00584K

Ting Wen, Maodi Zhang, Jing Li, Chenyin Jiao, Shenghai Pei, Zenghui Wang and Juan Xia

引用次数: 1

Integrated cascade catalysis of microalgal bioenzyme and inorganic nanozyme for anti-inflammation therapy† 微藻生物酶与无机纳米酶级联催化抗炎治疗研究

IF 9.7 2区材料科学

Nanoscale Horizons Pub Date : 2023-02-03 DOI: 10.1039/D2NH00572G

Qi-Wen Chen, Meng-Wei Cao, Ji-Yan Qiao, Qian-Ru Li and Xian-Zheng Zhang

{"title":"Integrated cascade catalysis of microalgal bioenzyme and inorganic nanozyme for anti-inflammation therapy†","authors":"Qi-Wen Chen, Meng-Wei Cao, Ji-Yan Qiao, Qian-Ru Li and Xian-Zheng Zhang","doi":"10.1039/D2NH00572G","DOIUrl":"https://doi.org/10.1039/D2NH00572G","url":null,"abstract":"Combinations of multiple enzymes for cascade catalysis have been widely applied in biomedicine, but the integration of a natural bioenzyme with an inorganic nanozyme is less developed. Inspired by the abundant content of superoxide dismutase (SOD) in Spirulina platensis (SP), we establish an integrated cascade catalysis for anti-inflammation therapy by decorating catalase (CAT)-biomimetic ceria nanoparticles (CeO2) onto the SP surface via electrostatic interaction to build microalgae-based biohybrids. The biohybrids exhibit combined catalytical competence for preferentially transforming superoxide anion radicals (O2˙?) to hydrogen peroxide (H2O2), and subsequently catalyzing H2O2 disproportionation to water and oxygen. In ulcerative colitis and Crohn's disease, the biohybrids reveal a satisfactory therapeutic effect owing to the synergistic reactive oxygen species (ROS)-scavenging capacity, suggesting a new train of thought for enzyme-based biomedical application.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 4","pages":" 489-498"},"PeriodicalIF":9.7,"publicationDate":"2023-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3764427","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}

引用次数: 1

Recent advances in aggregation-induced emission materials for enhancing solar energy utilization 提高太阳能利用的聚集致发射材料研究进展

IF 9.7 2区材料科学

Nanoscale Horizons Pub Date : 2023-02-02 DOI: 10.1039/D2NH00506A

Haixiang Liu, Haotian Bai, Jacky W. Y. Lam, Ryan T. K. Kwok and Ben Zhong Tang

引用次数: 2

Coupling of plasmonic hot spots with shurikens for superchiral SERS-based enantiomer recognition† 超手性sers对映体识别中等离子体热点与shurikens的耦合研究

IF 9.7 2区材料科学

Nanoscale Horizons Pub Date : 2023-01-31 DOI: 10.1039/D3NH00008G

Olga Guselnikova, Roman Elashnikov, Vaclav Svorcik, Martin Kartau, Cameron Gilroy, Nikolaj Gadegaard, Malcolm Kadodwala, Affar S. Karimullah and Oleksiy Lyutakov

{"title":"Coupling of plasmonic hot spots with shurikens for superchiral SERS-based enantiomer recognition†","authors":"Olga Guselnikova, Roman Elashnikov, Vaclav Svorcik, Martin Kartau, Cameron Gilroy, Nikolaj Gadegaard, Malcolm Kadodwala, Affar S. Karimullah and Oleksiy Lyutakov","doi":"10.1039/D3NH00008G","DOIUrl":"https://doi.org/10.1039/D3NH00008G","url":null,"abstract":"Detection of enantiomers is a challenging problem in drug development as well as environmental and food quality monitoring where traditional optical detection methods suffer from low signals and sensitivity. Application of surface enhanced Raman scattering (SERS) for enantiomeric discrimination is a powerful approach for the analysis of optically active small organic or large biomolecules. In this work, we proposed the coupling of disposable chiral plasmonic shurikens supporting the chiral near-field distribution with SERS active silver nanoclusters for enantio-selective sensing. As a result of the plasmonic coupling, significant difference in SERS response of optically active analytes is observed. The observations are studied by numerical simulations and it is hypothesized that the silver particles are being excited by superchiral fields generated at the surface inducing additional polarizations in the probe molecules. The plasmon coupling phenomena was found to be extremely sensitive to slight variations in shuriken geometry, silver nanostructured layer parameters, and SERS excitation wavelength(s). Designed structures were able to discriminate cysteine enantiomers at concentrations in the nanomolar range and probe biomolecular chirality, using a common Raman spectrometer within several minutes. The combination of disposable plasmonic substrates with specific near-field polarization can make the SERS enantiomer discrimination a commonly available technique using standard Raman spectrometers.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 4","pages":" 499-508"},"PeriodicalIF":9.7,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2023/nh/d3nh00008g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3764428","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}

引用次数: 1

Evaluating charge-type of polyelectrolyte as dielectric layer in memristor and synapse emulation† 忆阻器中作为介质层的聚电解质的电荷类型评价与突触仿真

IF 9.7 2区材料科学

Nanoscale Horizons Pub Date : 2023-01-30 DOI: 10.1039/D2NH00524G

Jingzhou Shi, Shaohui Kang, Jiang Feng, Jiaming Fan, Song Xue, Gangri Cai and Jin Shi Zhao

{"title":"Evaluating charge-type of polyelectrolyte as dielectric layer in memristor and synapse emulation†","authors":"Jingzhou Shi, Shaohui Kang, Jiang Feng, Jiaming Fan, Song Xue, Gangri Cai and Jin Shi Zhao","doi":"10.1039/D2NH00524G","DOIUrl":"https://doi.org/10.1039/D2NH00524G","url":null,"abstract":"Based on credible advantages, organic materials have received more and more attention in memristor and synapse emulation. In particular, an implementation of the ionic pathway as a dielectric layer is essential for organic materials used as building blocks of memristor and artificial synaptic devices. Herein, we describe an evaluation of the use of positive and negative polyelectrolytes as dielectric layers for a memristor with calcium ion (Ca2+) doping. The device based on a negative polyelectrolyte shows the potential to obtain an excellent resistive switching performance and synapse functionality, especially in the transformation behaviours from short-term plasticity (STP) to long-term plasticity (LTP) in both the potentiation and depression processes, which were comparable to the perfomrmance obtained with a positive polyelectrolyte. The mechanism of electrical resistance transition and synaptic function can be attributed to the migration of the doped Ca2+ and the ionic functional groups of polyelectrolyte, which result in the formation and vanishing filament-like Ca2+ flux.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 4","pages":" 509-515"},"PeriodicalIF":9.7,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3764429","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}

引用次数: 0

Interfacial built-in electric-field for boosting energy conversion electrocatalysis 界面内置电场，促进能量转换电催化

IF 9.7 2区材料科学

Nanoscale Horizons Pub Date : 2023-01-30 DOI: 10.1039/D2NH00549B

Hui Xu, Junru Li and Xianxu Chu

引用次数: 13

Template-directed 2D nanopatterning of S = 1/2 molecular spins† S = 1/2分子自旋的模板定向二维纳米图

IF 9.7 2区材料科学

Nanoscale Horizons Pub Date : 2023-01-26 DOI: 10.1039/D2NH00375A

Kyungju Noh, Luciano Colazzo, Corina Urdaniz, Jaehyun Lee, Denis Krylov, Parul Devi, Andrin Doll, Andreas J. Heinrich, Christoph Wolf, Fabio Donati and Yujeong Bae

{"title":"Template-directed 2D nanopatterning of S = 1/2 molecular spins†","authors":"Kyungju Noh, Luciano Colazzo, Corina Urdaniz, Jaehyun Lee, Denis Krylov, Parul Devi, Andrin Doll, Andreas J. Heinrich, Christoph Wolf, Fabio Donati and Yujeong Bae","doi":"10.1039/D2NH00375A","DOIUrl":"https://doi.org/10.1039/D2NH00375A","url":null,"abstract":"Molecular spins are emerging platforms for quantum information processing. By chemically tuning their molecular structure, it is possible to prepare a robust environment for electron spins and drive the assembly of a large number of qubits in atomically precise spin-architectures. The main challenges in the integration of molecular qubits into solid-state devices are (i) minimizing the interaction with the supporting substrate to suppress quantum decoherence and (ii) controlling the spatial distribution of the spins at the nanometer scale to tailor the coupling among qubits. Herein, we provide a nanofabrication method for the realization of a 2D patterned array of individually addressable Vanadyl Phthalocyanine (VOPc) spin qubits. The molecular nanoarchitecture is crafted on top of a diamagnetic monolayer of Titanyl Phthalocyanine (TiOPc) that electronically decouples the electronic spin of VOPc from the underlying Ag(100) substrate. The isostructural TiOPc interlayer also serves as a template to regulate the spacing between VOPc spin qubits on a scale of a few nanometers, as demonstrated using scanning tunneling microscopy, X-ray circular dichroism, and density functional theory. The long-range molecular ordering is due to a combination of charge transfer from the metallic substrate and strain in the TiOPc interlayer, which is attained without altering the pristine VOPc spin characteristics. Our results pave a viable route towards the future integration of molecular spin qubits into solid-state devices.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 5","pages":" 624-631"},"PeriodicalIF":9.7,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2023/nh/d2nh00375a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3792946","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}

引用次数: 1

Hardware Trojans based on two-dimensional memtransistors† 基于二维mem晶体管的硬件木马

IF 9.7 2区材料科学

Nanoscale Horizons Pub Date : 2023-01-26 DOI: 10.1039/D2NH00568A

Akshay Wali, Harikrishnan Ravichandran and Saptarshi Das

引用次数: 0

Transverse magnetoconductance in two-terminal chiral spin-selective devices† 双端手性自旋选择器件的横向磁导

IF 9.7 2区材料科学

Nanoscale Horizons Pub Date : 2023-01-25 DOI: 10.1039/D2NH00502F

Md Anik Hossain, Sara Illescas-Lopez, Rahul Nair, Juan Manuel Cuerva, Luis Álvarez de Cienfuegos and Sandipan Pramanik

{"title":"Transverse magnetoconductance in two-terminal chiral spin-selective devices†","authors":"Md Anik Hossain, Sara Illescas-Lopez, Rahul Nair, Juan Manuel Cuerva, Luis Álvarez de Cienfuegos and Sandipan Pramanik","doi":"10.1039/D2NH00502F","DOIUrl":"https://doi.org/10.1039/D2NH00502F","url":null,"abstract":"The phenomenon of chirality induced spin selectivity (CISS) has triggered significant activity in recent years, although many aspects of it remain to be understood. For example, most investigations are focused on spin polarizations collinear to the charge current, and hence longitudinal magnetoconductance (MC) is commonly studied in two-terminal transport experiments. Very little is known about the transverse spin components and transverse MC – their existence, as well as any dependence of this component on chirality. Furthermore, the measurement of the CISS effect via two-terminal MC experiments remains a controversial topic. Detection of this effect in the linear response regime is debated, with contradicting reports in the literature. Finally, the potential influence of the well-known electric magnetochiral effect on CISS remains unclear. To shed light on these issues, in this work we have investigated the bias dependence of the CISS effect using planar carbon nanotube networks functionalized with chiral molecules. We find that (a) transverse MC exists and exhibits tell-tale signs of the CISS effect, (b) transverse CISS MC vanishes in the linear response regime establishing the validity of Onsager's relation in two-terminal CISS systems, and finally (c) the CISS signal remains present even in the absence of electric magneto chiral effects, suggesting the existence of an alternative physical origin of CISS MC.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 3","pages":" 320-330"},"PeriodicalIF":9.7,"publicationDate":"2023-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3869272","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}

引用次数: 1

Amplified EQCM-D detection of extracellular vesicles using 2D gold nanostructured arrays fabricated by block copolymer self-assembly† 用嵌段共聚物自组装制备的二维金纳米结构阵列扩增EQCM-D检测细胞外囊泡

IF 9.7 2区材料科学

Nanoscale Horizons Pub Date : 2023-01-24 DOI: 10.1039/D2NH00424K

Jugal Suthar, Alberto Alvarez-Fernandez, Esther Osarfo-Mensah, Stefano Angioletti-Uberti, Gareth R. Williams and Stefan Guldin

{"title":"Amplified EQCM-D detection of extracellular vesicles using 2D gold nanostructured arrays fabricated by block copolymer self-assembly†","authors":"Jugal Suthar, Alberto Alvarez-Fernandez, Esther Osarfo-Mensah, Stefano Angioletti-Uberti, Gareth R. Williams and Stefan Guldin","doi":"10.1039/D2NH00424K","DOIUrl":"https://doi.org/10.1039/D2NH00424K","url":null,"abstract":"Extracellular vesicles (EVs) are routinely released from nearly all cell types as transport vehicles and for cell communication. Crucially, they contain biomolecular content for the identification of health and disease states that can be detected from readily accessible physiological fluids, including urine, plasma, or saliva. Despite their clinical utility within noninvasive diagnostic platforms such as liquid biopsies, the currently available portfolio of analytical approaches are challenged by EV heterogeneity in size and composition, as well as the complexity of native biofluids. Quartz crystal microbalance with dissipation monitoring (QCM-D) has recently emerged as a powerful alternative for the phenotypic detection of EVs, offering multiple modes of analyte discrimination by frequency and dissipation. While providing rich data for sensor development, further progress is required to reduce detection limits and fully exploit the technique's potential within biosensing. Herein, we investigate the impact of nanostructuring the sensor electrode surface for enhancing its detection capabilities. We employ self-assembly of the block copolymer polystyrene-block-poly(4-vinylpyridine) to create well defined 2D gold islands via selective impregnation of the pyridine domain with gold precursors and subsequent removal of the template. When matched to the EV length scale, we find a 4-fold improvement in sensitivity despite a 4-fold reduction in area for analyte and ligand anchoring in comparison to a flat sensor surface. Creation of tailored and confined sensing regions interspersed by non-binding silica provides optimal spatial orientation for EV capture with reduced steric effects and negative cooperativity of grafted antibodies, offering a promising route for facilitated binding and enhanced performance of sensor platforms.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 4","pages":" 460-472"},"PeriodicalIF":9.7,"publicationDate":"2023-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2023/nh/d2nh00424k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3764424","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}

引用次数: 1