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erratum to:Tribological behaviour of Ti_(3)C_(2)T_(x)nano-sheets:Substrate-dependent tribo-chemical reactions

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Friction 2024年第7期12卷 1618-1619页

作者： Alberto ROTA Nicolas BeLLINA Bo WANG Andreas ROSeNKRANZ dipartimento di scienze Fisiche Informatiche e MatematicheUniversitàdi Modena e Reggio EmiliaModena 41125Italy CNR-Istituto di Nanoscienze Centro S3Modena 41125Italy Centro Interdipartimentale per la Ricerca Applicata e i Servizi nel settore della Meccanica Avanzata e della Motoristica Universitàdi Modena e Reggio EmiliaModena 41125Italy Key Laboratory of Marine New Materials and Related Technology Zhejiang Key Laboratory of Marine Materials and Protection TechnologyNingbo Institute of Material Technology&EngineeringChinese Academy of SciencesNingbo 315201China Department of Chemical engineering Biotechnology and MaterialsUniversity of ChileSantiago 8370456Chile

erratum to Alberto Rota,Nicolas Bellina,Bo Wang&Andreas Rosenkranz.Tribological behaviour of Ti_(3)C_(2)T_(x)nano-sheets:Substratedependent tribo-chemical reactions.Friction 11(8):1522–1533(2023).

关键词： Friction behaviour chemical

On Some Numerical Semigroup Transforms

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Algebra Colloquium 2022年第3期29卷 509-526页

作者： Carmelo Cisto Universita di Messina Dipartimento di Scienze Matematiche e Informatiche Scienze Fisiche e Scienze della TerraViale Ferdinando Stagno D'Alcontres 3198166 MessinaItaly

In this paper we introduce a particular semigroup transform A that fixes the invariants involved in Wilf's conjecture,except the embedding dimension.It also allows one to arrange the set of non-ordinary and non-irreducible numerical semigroups in a family of rooted trees.In addition,we study another transform,having similar features,that has been introduced by Bras-Amorós,and we make a comparison of them.In particular,we study the behavior of the embedding dimension under the action of such transforms,providing some consequences concerning Wilf's conjecture.

关键词： numerical semigroup embedding dimension genus left element Wilf's conjecture

Remarks on Some Compact Symplectic Solvmanifolds

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Acta Mathematica Sinica,english Series 2023年第10期39卷 1874-1886页

作者： Qiang TAN Adriano TOMASSINI School of Mathematical Sciences Jiangsu UniversityZhenjiang 212013P.R.China dipartimento di scienze matematiche Fisiche e InformaticheUnit`a di Matematica e InformaticaUniversit`a degli Studi di ParmaParco Area delle Scienze 53/A43124ParmaItaly

We study the hard Lefschetz property on compact symplectic solvmanifolds,i.e.,compact quotients M=ΓG of a simply-connected solvable Lie group G by a latticeΓ,admitting a symplectic structure.

关键词： Symplectic solvmanifold Hard Lefschetz Condition

Bitcoin:a new proof‑of‑work system with reduced variance

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Financial Innovation 2023年第1期9卷 2325-2338页

作者： Danilo Bazzanella Andrea Gangemi dipartimento di scienze matematiche Politecnico di TorinoCorso Duca degli Abruzzi 2410129 TurinItaly

Since its inception,bitcoin has used the popular consensus protocol proof-of-work(PoW).PoW has a well-known flaw:it distributes all rewards to a single miner(or pool)who inserts a new block.Consequently,the variance of rewards and the mining enter-prise risk are extremely high.In 2016,Shi proposed addressing this problem with a theoretical algorithm.We introduce an easily-implemented PoW variant that improves Shi’s idea.The network must not find a single nonce but a few to insert a block.This simple change allows for a fairer distribution of rewards and also has the effect of regularizing the insertion time of blocks.This method would facilitate the emergence of small pools or autonomous miners.

关键词： Proof-of-work Bitcoin Consensus protocol

Hidden Vacuum Rabi Oscillations:Dynamical Quantum Superpositions of On/Off Interaction between a Single Quantum Dot and a Microcavity

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Communications in Theoretical Physics 2017年第6期67卷 661-666页

作者： A.Ridolfo R.Stassi O.di Stefano dipartimento di scienze matematiche Scienze Fisiche e Scienze della Terra Università di Messina CeMS RIKEN

We show that it is possible to realize quantum superpositions of switched-on and-off strong light-matter interaction in a single quantum dot-semiconductor microcavity system.Such superpositions enable the observation of counterintuitive quantum conditional dynamics effects.Situations are possible where cavity photons as well as the emitter luminescence display exponential decay but their joint detection probability exhibits vacuum Rabi oscillations.Remarkably,these quantum correlations are also present in the nonequilibrium steady state spectra of such coherently driven dissipative quantum systems.

关键词： Rabi oscillations quantum superposition nanostructures light-matter interaction

Tribological behaviour of Ti_(3)C_(2)T_(x) nano-sheets: Substrate-dependent tribo-chemical reactions

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Friction 2023年第8期11卷 1522-1533页

MXenes,a newly emerging class of layered two dimensional(2D)materials,are promising solid lubricants due to their 2D structure consisting of weakly-bonded layers with a low shear strength and ability to form beneficial tribo-layers.This work aims at evaluating for the first time MXenes lubrication performance and tribofilm formation ability on different metallic substrates(mirror-lapped Fe and Cu discs).After depositing MXenes via ethanol(1 wt%)on the substrates,pronounced differences in the resulting substrate-dependent frictional evolution are observed.While MXenes are capable to reduce friction for both substrates after the full evaporation of ethanol,MXenes lubricating effect on Cu is long-lasting,with a 35-fold increased lifetime compared to Fe.Raman spectra acquired in the wear-tracks of the substrates and counter-bodies reveal notable differences in the friction-induced chemical changes depending on the substrate material.In case of Fe,the progressive failure of MXenes lubrication generates different Fe oxides on both the substrate and the ball,resulting in continuously increasing friction and a poor lubrication effect.For Cu,sliding induces the formation of a Ti_(3)C_(2)-based tribofilm on both rubbing surfaces,enabling a long-lasting lubricating effect.This work boosts further experimental and theoretical work on MXenes involved tribo-chemical processes.

关键词： Mxenes Ti_(3)C_(2)T_(x) nano-sheets coefficient of friction Raman spectroscopy tribochemistry

PeG-PLGA electrospun nanofibrous membranes loaded with Au@Fe2O3 nanoparticles for drug delivery applications

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Frontiers of physics 2018年第1期13卷 65-73页

作者： Salvatore Spadaro Marco Santoro Francesco Barreca Angela Scala Simona Grimato Fortunato Neri enza Fazio dipartimento di scienze matematiche e informatiche Scienze Fisiche e Scienze della Terra Universita di Messina Viale F. Stagno D'Alcontres 31 98166 Messina Italy dipartimento di scienze Chimiche Biologiche Farmaceutiche e Ambientali Universita di Messina Viale F. Stagno D'Alcontres 31 98166 Messina Italy

A PeGylated-PLGA random nanofibrous membrane loaded with gold and iron oxide nanoparticles and with silibinin was prepared by electrospinning deposition. The nanofibrous membrane can be remotely controlled and activated by a laser light or magnetic field to release biological agents on demand. The nanosystems were characterized using scanning electron microscopy, Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, and thermogravimetric analyses. The drug loading efficiency and drug content percentages were determined by UV-vis optical absorption spectroscopy. The nanofibrous membrane irradiated by a relatively low-intensity laser or stimulated by a magnetic field showed sustained silibinin release for at least 60 h, without the burst effect. The proposed low-cost electrospinning procedure is capable of assembling, via a one-step procedure, a stimuli-responsive drug-loaded nanosystem with metallic nanoparticles to be externally activated for controlled drug delivery.

关键词： Au@Fe2O3 nanoparticles PeG-PLGA copolymer pulsed laser ablation electrospinning,drug delivery

Strongly enhanced light trapping in a two-dimensional silicon nanowire random fractal array

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Light(Science & Applications) 2016年第1期5卷 855-861页

作者： Barbara Fazio Pietro Artoni Maria Antonia Iatì Cristiano D’Andrea Maria JosèLo Faro Salvatore Del Sorbo Stefano Pirotta Pietro Giuseppe Gucciardi Paolo Musumeci Cirino Salvatore Vasi Rosalba Saija Matteo Galli Francesco Priolo Alessia Irrera CNR-IPCF Istituto per i Processi Chimico Fisici98158 MessinaItaly dipartimento di Fisica e Astronomia Universitàdi Catania95123 CataniaItaly CNR-MATIS IMM Istituto per la Microelettronica e Microsistemi95123 CataniaItaly dipartimento di Fisica Universitàdegli Studi di Pavia27100 PaviaItaly dipartimento di scienze matematiche e informatiche Scienze Fisiche e Scienze della TerraUniversitàdi Messina98166 MessinaItaly Scuola Superiore di Catania Universitàdi Cataniavia Valdisavoia995123 CataniaItaly

We report on the unconventional optical properties exhibited by a two-dimensional array of thin Si nanowires arranged in a random fractal geometry and fabricated using an inexpensive,fast and maskless process compatible with Si technology.The structure allows for a high light-trapping efficiency across the entire visible range,attaining total reflectance values as low as 0.1%when the wavelength in the medium matches the length scale of maximum heterogeneity in the system.We show that the random fractal structure of our nanowire array is responsible for a strong in-plane multiple scattering,which is related to the material refractive index fluctuations and leads to a greatly enhanced Raman scattering and a bright photoluminescence.These strong emissions are correlated on all length scales according to the refractive index fluctuations.The relevance and the perspectives of the reported results are discussed as promising for Si-based photovoltaic and photonic applications.

关键词： light trapping multiple scattering Raman enhancement random fractal silicon nanowires

The Jacobian Dual of Certain Mixed Product Ideals

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Algebra Colloquium 2020年第2期27卷 263-280页

作者： M.La Barbiera M.Lahyane G.Restuccia dipartimento di scienze matematiche e informatiche Scienze Fisiche e Scienze Della TerraUniversity of Messina98166 MessinaItaly Instituto de Fisica y Matematicas(IFM)Universidad Michoacana de San Nicolas de Hidalgo(UMSNH)edificio C-3 Ciudad UniversitariaC.P.58040 MoreliaMichoacanMexico

We consider the symmetric algebra of a class of monomial ideals generated by s-sequences.For these ideals with linear syzygies,we determine their Jacobian dual modules and study their duality properties.

关键词： graded algebra symmetric algebra monomial ideal Jacobian dual