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Editorial for a special issue on graphene and 2D alternative materials:From preparation to potential applications

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Nano materials Science 2022年第1期4卷 1-2页

作者： Pablo Ares Felix Zamora departamento de fisica de la materia condensada and Condensed Matter Physics Center(IFIMAC) Universidad Autonoma de Madrid Madrid28049Spain departamento de Quimica Inorganica Condensed Matter Physics Center(IFIMAC)and Institute for Advanced Research in Chemical Sciences(IAdChem)Universidad Autonoma de MadridMadrid28049Spain Instituto Madrileno de Estudios Avanzados en Nanociencia(IMdeA-Nanociencia) CantoblancoMadrid28049Spain

The isolation of graphene and subsequent studies showed that obtaining atomically thin crystalline sheets was feasible and possessed extraordinary *** result opened the door to an entirely new family of materials known as two-dimensional or 2D *** in this field is intense:the emergence of new 2D materials,the properties of their combinations and the ability of graphene to reinvent itself,showing novel and exciting properties,make it likely that this field will continue to be one of the leading topics of materials science and condensed matter physics.

关键词： preparation entirely crystalline

There is life after coking for Ir nanocatalyst superlattices

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Nano Research 2022年第8期15卷 6969-6976页

作者： Antonio J.Martínez-Galera Haojie Guo Mariano D.Jiménez-Sánchez Stefano Franchi Kevin C.Prince José M.Gómez-Rodríguez departamento de Física de la materia condensada Universidad Autónoma de MadridMadrid E-28049Spain Instituto Nicolás Cabrera Universidad Autónoma de MadridMadrid E-28049Spain Elettra-Sincrotrone Trieste S.C.p.A. in Area Science ParkBasovizza(Trieste)34149Italy Condensed Matter Physics Center(IFIMAC) Universidad Autónoma de MadridMadrid E-28049Spain

Achieving superior performance of nanoparticle systems is one of the biggest challenges in *** major phenomena,occurring during the reactions,hinder the development of the full potential of nanoparticle catalysts:sintering and contamination with carbon containing species,sometimes called ***,we demonstrate that Ir nanocrystals,arranged into periodic networks on hexagonal boron nitride(h-BN)supports,can be restored without sintering after contamination by persistent *** restoration yields the complete removal of carbon from the nanocrystals,which keep their crystalline structure,allowing operation without *** findings,together with the possibility of fine tuning the nanocrystals size,confer this nanoparticle system a great potential as a testbed to extract key information about catalysis-mediated oxidation *** the case of the CO oxidation by O2,reaction of interest in environmental science and green energy production,the existence of chemical processes not observed before in other nanoparticle systems is demonstrated.

关键词： catalysis coke nanoparticles scanning tunneling microscopy(STM) X-ray photoemission spectroscopy(XPS)

Pyrenetetraone-based covalent organic framework as an effective electrocatalyst for oxygen reduction reaction

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Nano Research 2022年第5期15卷 3907-3912页

作者： Paloma Garcia-Arroyo Emiliano Martinez-Perinan Jorge J.Cabrera-Trujillo Elena Salagre Enrique G.Michel Jose I.Martinez Encarnacion Lorenzo Jose L.Segura departamento de Quimica Organica I Facultad de CC.QuimicasUniversidad Complutense de Madrid28040 MadridSpain departamento de Quimica Analitica y Analisis Instrumental Facultad de CienciasUniversidad Autónoma de Madrid28049 MadridSpain departamento de fisica de la materia condensada Universidad Autónoma de Madrid28049 MadridSpain Condensed Matter Physics Center(IFIMAC) Universidad Autónoma de Madrid28049 MadridSpain departamento de Nanoestructuras SuperficiesRecubrimientos y Astrofisica MolecularInstituto de Ciencia de Materiales de Madrid(ICMMCSIC)28049 MadridSpain Instituto Madrileno de Estudios Avanzados en Nanociencia(IMdeA-Nanociencia) 28049 MadridSpain Institute for Advanced Research in Chemical Sciences(IAdChem) Universidad Autonoma de Madrid28049 MadridSpain

A novel porous and crystalline two-dimensional(2D)electrochemically active covalent organic framework(COF)based on ortho-quinone units has been prepared as an innovative approach towards the development of organic cathode materials with multiple redox sites as an efficient electrocatalyst for the oxygen reduction reaction(ORR).In contrast with most of the previously reported COFs as electrocatalysts for the ORR,the electrocatalytic application of this material towards ORR has been investigated without adding any metal or conductive supporting material and avoiding any additional carbonization ***,the electrochemical properties of the COF material have been compared with two analogue amorphous frameworks with similar chemical composition,which points out the important role of the enhanced crystallinity and porosity of the COF network in its superior performance as an electrocatalyst towards ORR.

关键词： electrocatalysis oxygen reduction reaction metal free pyrenetetraone covalent organic framework

Hysteresis Loops and Phase Diagrams of the Spin-1 Ising Model in a Transverse Crystal Field

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Chinese Physics Letters 2012年第1期29卷 194-197页

作者： S.Bouhou I.Essaoudi A.Ainane M.Saber J.J.de Miguel M.Kerouad laboratoire de Physique des materiaux et Modelisations des Systemes Unite Associee au CNRST-URAC 08Department of PhysicsFaculty of SciencesUniversity of Moulay IsmailB.P.11201MeknesMorocco Max-Planck-Institut fur Physik Complexer Systeme Nohnitzer Str.38D-01187 DresdenGermany dpto.fisica de la materia condensada C-3 and Institut of Materials Sciences“Nicolas Cabrera”Univ.AutonomaCantoblanco E-28049-MadridSpain

Within the framework of the effective-field theory with a probability distribution technique,which accounts for the self-spin correlation functions,the ferromagnetic spin-1 Ising model with a transverse crystal field on honeycomb,square and simple cubic lattices is *** have investigated the effect of the transverse crystal field on the phase diagrams,magnetization,hysteresis loops and χ_(z,h) of the system.A number of interesting phenomena of the system are discussed.

关键词： transverse Ising crystal

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微观结构调控优化高熵非晶合金磁热性能

Science China materials 2022年第4期65卷 1134-1142页

作者：尹航博策 Jia Yan law 黄永江沈红先姜思达郭舒 Victorino Franco 孙剑飞 School of materials Science and Engineering Harbin Institute of TechnologyHarbin150001China dpto.Física de la materia condensada ICMS-CSICUniversidad de SevillaSevilla41080Spain Space Environment Simulation Research Infrastructure Harbin Institute of TechnologyHarbin150001China Center for Analysis Measurement and ComputingHarbin Institute of TechnologyHarbin150001China

第二代高熵合金(非等原子比)具备超越传统合金和第一代等原子比单相高熵合金性能限制的优异性能.对于磁热高熵合金,非等原子比(Gd_(36)Tb_(20)Co_(20)Al_(24))100−xFex纤维的居里温度最高达108 K,这克服了含稀土高熵合金低温(即普遍工... 详细信息

第二代高熵合金(非等原子比)具备超越传统合金和第一代等原子比单相高熵合金性能限制的优异性能.对于磁热高熵合金,非等原子比(Gd_(36)Tb_(20)Co_(20)Al_(24))100−xFex纤维的居里温度最高达108 K,这克服了含稀土高熵合金低温(即普遍工作温区在60 K以下)的限制.x=2和3合金含有微量纳米晶,这使得合金具有宽化的居里温度分布.本文使用电流退火技术,通过对微观结构调控进一步优化x=3纤维的磁热性能.电流退火使纤维非晶基体沉淀析出纳米晶,并造成两相间成分的差异.缩放过程中使用两个参考温度,克服多相特征所造成的缩放磁热曲线的困难.两相成分差异随着电流密度的增加而增大,在一定限度内,成分差异扩大纤维工作温区,同时使相对制冷能力提升至许多传统磁热合金(无论是单非晶相还是多相(非晶和纳米晶))的2倍以上.相比于其他含稀土高熵非晶合金,本项工作显示出在温度限制(60 K)之上较好的磁热性能.这揭示了除适当的成分设计外,微观结构调控是优化高熵合金磁热性能的可行方法.

关键词： covalent organic framework low-temperature photothermal therapy gambogic acid heat-shock protein 90 lung metastasis

A plasmonic route for the integrated wireless communication of subdiffraction-limited signals

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Light(Science & Applications) 2020年第1期9卷 930-938页

作者： Hao Chi Zhang Le Peng Zhang Pei Hang He Jie Xu Cheng Qian Francisco J.Garcia-Vidal Tie Jun Cui State Key laboratory of Millimeter Waves Southeast University210096 NanjingChina departamento de fisica Teorica de la materia condensada and Condensed Matter Physics Center(IFIMAC) Universidad Autonoma de MadridMadridSpain Donostia International Physics Center(DIPC) Donostia/San SebastianSpain

Perfect lenses,superlenses and time-reversal mirrors can support and spatially separate evanescent waves,which is the basis for detecting subwavelength information in the far ***,the inherent limitations of these methods have prevented the development of systems to dynamically distinguish subdiffraction-limited *** the physical merits of spoof surface plasmon polaritons(SPPs),we demonstrate that subdiffraction-limited signals can be transmitted on planar integrated SPP channels with low loss,low channel interference,and high gain and can be radiated with a very low environmental ***,we show how deep subdiffraction-limited signals that are spatially coupled can be distinguished after line-of-sight wireless *** a visualized demonstration,we realize the high-quality wireless communication of two movies on subwavelength channels over the line of sight in real time using our plasmonic scheme,showing significant advantages over the conventional methods.

关键词： communication spatially diffraction

Structural properties of water confined by phospholipid membranes

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Frontiers of physics 2018年第1期13卷 57-64页

作者： Fausto Martelli Hsin-Yu Ko Carles Calero Borallo Giancarlo Franzese department of Chemistry Princeton University Princeton NJ 08544 USA Seccio de fisica Estadlstica i Interdisciplinaria-departament de fisica de la materia condensada Facultat de Fisica Universitat de -Barcelona Mart i Franqus 1 08028 Barcelona Spain Institute of Nanoscience and Nanotechnology (IN2UB) Universitat de Barcelona Av. Joan XXIII S/N 08028 Barcelona Spain

Biological membranes are essential for cell life and hydration. Water provides the driving force for the assembly and stability of many cell components. Here, we study the structural properties of water in a phospholipid membrane. We characterize the local structures, inspecting the intermediate range order （IRO） and adopting a sensitive local order metric recently proposed by Martelli et al. that measures and grades the degree of overlap of the local environment with the structures of perfect ice. Close to the membrane, water acquires a high IRO and changes its dynamical properties; i.e., its translational and rotational degrees of freedom slow in a region that extends over - 1 nm from the membrane interface. Surprisingly, we show that at distances as far as -~ 2.5 mn from the interface, although the bulk-like dynamics are recovered, the IRO of water is still slightly higher than that in the bulk under the same thermodynamic conditions. Therefore, the water-membrane interface has a structural effect at ambient conditions that propagates further than the often-invoked 1-nm length scale. Consequently, this should be considered when analyzing experimental data of water confined by membranes and could help us to understand the role of water in biological systems.

关键词： confined water dimyristoylphosphatidylcholines DMPC order parameter

materials databases for the computational materials scientist

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International Journal of Minerals,Metallurgy and materials 2011年第3期18卷 303-308页

作者： Marcel H.F. Sluiter Darko Simonovic Emre S. Tasci materials Science and Engineering 3ME Delft University of Technology materials innovation institute M2i Física de la materia condensada Universidad del Pais Vasco

Until recently, many computational materials scientists have shown little interest in materials databases. This is now changing be-cause the amount of computational data is rapidly increasing and the potential for data mining provides unique opportunities for discovery and optimization. Here, a few examples of such opportunities are discussed relating to structural analysis and classification, discovery of correlations between materials properties, and discovery of unsuspected compounds.

关键词： database systems materials data mining ab initio prediction structural analysis

One step synthesis of high efficiency nickel/mesoporous TiO_2 hybrid catalyst for hydrogen evolution reaction

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Journal of Energy Chemistry 2019年第2期28卷 79-87页

作者： Esteban A.Franceschini Melisa J.Gomez Gabriela I.lacconi INFIQC-CONICET Dto.de Fisicoquímica – Facultad de Ciencias QuímicasUniversidad Nacional de CórdobaCiudad Universitaria departamento de Física de la materia condensada Centro Atómico ConstituyentesComisión Nacional de Energía Atómica

Nickel-Ti O_2 hybrid catalysts are synthesized by electrodeposition and their catalytic activity with respect to the hydrogen evolution reaction is *** types of titanium oxide particles,which are commercial particles of dense Ti O_2 and mesoporous TiO_2 particles synthesized by an aerosol method,are incorporated into the matrix of the nickel *** nickel catalysts containing Ti O_2 particles presented higher catalytic activity than the conventional nickel Watts *** TiO_2-modified nickel catalyst showed the highest catalytic activity towards HER in alkaline *** addition,this type of nickel catalyst increases its catalytic activity after ageing treatment,which is an indication of an increase in the electro-active area of the electrode.

关键词： Co-deposition Impedance spectroscopy Titanium oxide Ageing process Raman spectroscopy