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Influence of breakup on elastic and α-production channels in the ^6Li＋^116Sn reaction

chinese Physics c 2017年第10期41卷 72-78页

作者： d.Patel S.Mukherjee N.deshmukh J.Lubian 王建松 T.correa B.K.Nayak 杨彦云马维虎 d.c.biswas Y.K.Gupta S.Santra E.T.Mirgule L.S.danu N.L.Singh A.Saxena cAS Key Laboratory of High Precision Nuclear Spectroscopy and center for Nuclear Matter Science Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China department of Physics Faculty of Science The M. S. University of Baroda Vadodara-390002 India INFN Laboratori Nazionali del Sud Catania Italy Instituto de Flsica Universidade Federal Fluminense Av. Litoranea s/n GragoatA Niteroi R.J. 24210-340 Brazil Instituto de AplicacAo Fernando Rodrigues da Silveira Universidade do Estado do Rio de Janeiro R. Santa Alexandrina 288 Rio Comprido Rio de Janeiro R J 20261-232 Brazil Nuclear Physics division Bhabha Atomic Research Centre Mumbai-400085 India

The effects of breakup reactions on elastic and α-production channels for the ^6Li＋^116Sn system have been investigated at energies below and near the coulomb barrier. The angular distributions of α-particle production differential cross sections have been obtained at several projectile energies between 22 and 40 MeV. The measured breakup α-particle differential cross sections and elastic scattering angular distributions have been compared with the predictions of continuum-discretized coupled channels（cdcc） calculations. The influence of breakup coupling has also been investigated by extracting dynamic polarization potentials（dPP） from the cdcc calculations. From the predictions of cdcc calculations the relative importance of the nuclear, coulomb, and total breakup contributions have also been investigated. The nuclear breakup couplings are observed to play an important role in comparison to the coulomb breakup for the direct breakup mechanisms associated in the reaction of ~6Li projectile with ^（116）Sn target nuclei. The influence of strong nuclear breakup coupling exhibits suppression in the coulomb-nuclear interference peak. The direct breakup cross sections from the cdcc calculations under-predict the measured α-particle differential cross sections at all energies. This suggests that the measured α particles may also have contributions from other possible breakup reaction channels.

关键词： α-elastic scattering -production channels breakup coupling effects dynamic polarization potentials

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Ultra‑Transparent and Multifunctional IZVO Mesh Electrodes for Next‑Generation Flexible Optoelectronics

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Nano-Micro Letters 2025年第1期17卷 293-309页

作者： Kiran A.Nirmal Tukaram d.dongale Atul c.Khot chenjie Yao Nahyun Kim Tae Geun Kim School of Electrical Engineering Korea UniversityAnam‑ro 145Seongbuk‑guSeoulRepublic of Korea computational Electronics and Nanoscience Research Laboratory School of Nanoscience and BiotechnologyShivaji UniversityKolhapur 416004India

Mechanically durable transparent electrodes are essential for achieving long-term stability in flexible optoelectronic ***,they are crucial for applications in the fields of energy,display,healthcare,and soft *** meshes represent a promising alternative to traditional,brittle,metal oxide conductors due to their high electrical conductivity,optical transparency,and enhanced mechanical *** this paper,we present a simple method for fabricating an ultra-transparent conducting metal oxide mesh electrode using selfcracking-assisted *** this method,we produced an electrode with ultra-transparency(97.39%),high conductance(Rs=21.24Ωsq^(−1)),elevated work function(5.16 eV),and good mechanical *** also evaluated the effectiveness of the fabricated electrodes by integrating them into organic photovoltaics,organic light-emitting diodes,and flexible transparent memristor devices for neuromorphic computing,resulting in exceptional device *** addition,the unique porous structure of the vanadium-doped indium zinc oxide mesh electrodes provided excellent flexibility,rendering them a promising option for application in flexible optoelectronics.

关键词： Self-cracking template Vanadium-doped indium zinc oxide mesh Organic solar cells Organic light-emitting diodes Flexible transparent memory

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Machine learning empowers efficient design of ternary organic solar cells with PM6 donor

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Journal of Energy chemistry 2025年第1期100卷 337-347页

作者： Kiran A.Nirmal Tukaram d.dongale Santosh S.Sutar Atul c.Khot Tae Geun Kim School of Electrical Engineering Korea University computational Electronics and Nanoscience Research Laboratory School of Nanoscience and Biotechnology Shivaji University Yashwantrao chavan School of Rural development Shivaji University

Organic solar cells(OScs) hold great potential as a photovoltaic technology for practical ***, the traditional experimental trial-and-error method for designing and engineering OScs can be complex, expensive, and time-consuming. Machine learning(ML) techniques enable the proficient extraction of information from datasets, allowing the development of realistic models that are capable of predicting the efficacy of materials with commendable accuracy. The PM6 donor has great potential for high-performance OScs. However, it is crucial for the rational design of a ternary blend to accurately forecast the power conversion efficiency(PcE) of ternary OScs(TOScs) based on a PM6 ***, we collected the device parameters of PM6-based TOScs and evaluated the feature importance of their molecule descriptors to develop predictive models. In this study, we used five different ML algorithms for analysis and prediction. For the analysis, the classification and regression tree provided different rules, heuristics, and patterns from the heterogeneous dataset. The random forest algorithm outperforms other prediction ML algorithms in predicting the output performance of PM6-based TOScs. Finally, we validated the ML outcomes by fabricating PM6-based TOScs. Our study presents a rapid strategy for assessing a high PcE while elucidating the substantial influence of diverse descriptors.

关键词： Random forests

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Twinning mediated anisotropic fracture behavior in bioimplant grade hot-rolled pure magnesium

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Journal of Magnesium and Alloys 2024年第9期12卷 3806-3822页

作者： Prakash c.Gautam Somjeet biswas Light Metals and Alloys Research Lab Department of Metallurgical and Materials EngineeringInstitute of Technology KharagpurKharagpurWest Bengal 721302India Institut für Metallkunde und Materialphysik(IMM) Rheinisch-Westfälische Technische Hoschule AachenAachen 52074Germany

Bioimplant grade hot-rolled magnesium with equiaxed microstructure and basal texture was examined for fracture toughness(FT)anisotropy using fatigue pre-cracked single-edge notch bending specimens with the notch,an||,⊥and 45°to rolling direction(Rd).due to adequate crack-tip plasticity,the size-independent elastic-plastic fracture toughness(JIc)were *** JIc was ob-served due to different twin lamellae formation *** owing to the initial basal texture with{10¯10}and{11¯20}poles mostlyand⊥to *** out-of-plane tensile stresses activated the{10¯12}||10¯11||extension twins(ET)as usual with matrix-ET∑15b coincident site lattice boundary(cSLB)*** the in-plane tensile stress⊥to the crack-tip activated{10¯11}||10¯12||contraction twins(cT)that transform into{10¯11}-{10¯12}double twins(dT)with matrix-dT∑23b and∑15a *** an||Rd,large dT lamellae fraction formed at∼30°and few ETs at∼30°and∼90°to the notch with crack growth mainly via the∑23b/∑15a cSLB interfaces during ***,significant dT and ET lamellae developed at∼0°and∼60°with cracking via the matrix-dT∑23b/∑15a and matrix-ET||15b cSLBs for an⊥*** dT and ET lamellae activated at∼15°,and the crack propagated through∑15b for an∼45°to *** JIc and the crack-tip plastic zone decreases,while the elastic component of the J-integral(Jel)and the ET formation increases from an||,⊥,to∼45°to *** strain incompatibility of matrices was higher with the geometrically hard ETs than ***,brittle interlamellar cracking occurred through the∑15b *** contrast,almost similar and higher crack-tip plasticity occurred in matrix and dT domains during crack propagation via||23b/||15a *** growth through∑23b/||15a led to high JIc,both∑15b and||23b/||15a led to moderate JIc,and∑15b least JIc for an||,⊥and 45°to Rd,respectively.

关键词： Magnesium Elastic-plastic fracture toughness Twins Texture Strain incompatibility

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Anisotropic FcGR behaviour in hot-rolled Mg-3Al-0.5ce alloy

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Journal of Magnesium and Alloys 2024年第7期12卷 2985-3002页

作者： Prakash c.Gautam Somjeet biswas Light Metals and Alloys Research Lab Department of Metallurgical and Materials EngineeringIndian Institute of Technology KharagpurKharagpurWest Bengal 721302India Institut für Metallkunde und Materialphysik(IMM) Rheinisch-Westfälische Technische Hoschule Aachen52074 AachenGermany

In this work,anisotropic fatigue crack growth rate(FcGR)behaviour in a hot-rolled Mg-3wt%Al-0.5wt%ce alloy was investigated using compact tension(cT)specimens with notch(an)parallel to the rolling direction(Rd)and transverse direction(Td).The FcGR tests were conducted at a constant load ratio(R=0.1)and maximum stress intensity factor(KMax=15.6 MPa√m)to investigate the crack closure *** both constant R and KMax conditions:(i)the load-displacement curves for every loading cycle were linear for a_(n)∥ to Rd and Td,indicating no crack closure;(ii)the FcGR was found to be lower for an∥Rd than an∥Td over the entire stress intensity factor range(△K).The hot-rolled sample contained long-aligned Al11ce3 intermetallic phase within grain boundaries that are elongated along *** the FcGR test,{10.12}extension twins(ET)with lamellae∼⊥and c-axis∼∥to these elongated intermetallics along Rd developed irrespective of the notch *** the loading cycle,these intermetallics along Rd generate back-stresses,reducing the in-plane tensile stress∼||and∼⊥to crack-tip to∼0 for a_(n)∥to Rd and Td,***,lenticular ET∼||⊥and∼||,with c-axis∼||and∼⊥to crack path activates,leading to trans and inter lamellar crack for anto Rd and Td,respectively,and anisotropic *** crack in a_(n)∥Rd reduces the FcGR due to plastic energy dissipation as perceived by comparatively more geometrically necessary boundaries(GNBs).On the other hand,faster FcGR was obtained for a_(n)∥Td due to interlamellar ***,the crack growth through the matrix-ET interfaces was favoured due to strain *** Fractography for a_(n)∥Rd shows smaller elongated grooves along crack propagation,which indicates crack ***,larger elongated grooves for a_(n)||Td indicated easy crack propagation due to favourable interlamellar crack.

关键词： Fatigue crack growth rate(FcGR) Magnesium(Mg) Intermetallics Extension twins crack closure

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Status and prospects for symmetric organic redox flow batteries

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Journal of Energy chemistry 2025年第1期100卷 125-143页

作者： Md Al Raihan c.Adam dyker department of chemistry University of New Brunswick

As environmental concerns from fossil fuel consumption intensify, large-scale energy storage becomes imperative for the integration of renewable sources like wind, hydro, and solar with the electrical *** flow batteries, particularly those employing organic molecules, are positioned as a key technology for this purpose. This review explores the growing field of symmetric organic redox flow batteries(ORFBs) within this context. Unlike traditional asymmetric designs based on unique active materials for each electrode, symmetric ORFBs involve a single bipolar species for both electrodes. This review highlights the benefits of a symmetric design, and categorizes five distinct classes of organic bipolar molecules used in both aqueous and non-aqueous solvents. By providing a comprehensive overview of their cell cycling and performance characteristics, the strengths and weaknesses of the diverse categories of bipolar molecules are highlighted for both solvent systems, as are opportunities for future development. This should guide new research directions and advance the development of practical symmetric ORFBs.

关键词： Redox flow battery Symmetric battery Organic battery Aqueous electrolyte Non-aqueous electrolyte

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Anti-amyloid antibodies in Alzheimer’s disease: what did clinical trials teach us?

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Neural Regeneration Research 2025年第4期20卷 1092-1093页

作者： danko Jeremic Lydia Jiménez-díaz Juan d.Navarro-López NeuroPhysiology&Behavior Lab University of Castilla-La ManchaBiomedical Research Center(CRIB)School of Medicine of Ciudad RealCiudad RealSpain

Although many causes of Alzheimer’s disease(Ad)may exist,both the original amyloid cascade and tau hypotheses posit that abnormal misfolding and accumulation of amyloid-β(Aβ)and tau protein is the central event causing the ***,that conclusion could be only partly true,and there is conflicting evidence about the role of both proteins in Ad,being able to precede and influence one *** researchers argue that these proteins are mere executors rather than primary causes of ***,there have been continuing refinements of both hypotheses,with alternative explanations proposed.Aβand tau proteins may be independently involved in specific neurotoxic pathways;yet there may be other crucial processes going on in early ***,accumulating evidence suggests that Aβand tau act synergistically,rather than additively in disease onset(Jeremic et al.,2021,2023a).

关键词： amyloid Alzheimer additive

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Remaking a connection:molecular players involved in post-injury synapse formation

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Neural Regeneration Research 2025年第6期20卷 1719-1720页

作者： diogo Tomé Ramiro d.Almeida iBiMEd-Institute of Biomedicine Department of Medical SciencesUniversity of AveiroAveiroPortugal cNc-center for Neuroscience and cell Biology University of CoimbraCoimbraPortugal

Functional recovery from central nervous system(cNS)trauma depends not only on axon regeneration or compensatory sprouting of uninjured fibers but also on the ability of newly grown axons to establish functional synapses with appropriate *** several studies have successfully promoted long-distance axonal regeneration in distinct cNS injury models,none of them have resulted in a viable therapeutic approach for patient recovery.A possible reason may be the lack of new synaptogenesis for reestablishing the circuitry lost after ***,we discuss how our understanding of the mechanisms that instruct synapse formation in the injured nervous system may contribute to the design of new strategies to promote functional restoration in traumatic cNS disorders.

关键词： viable injury instru

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Acquired sensorineural hearing loss,oxidative stress,and microRNAs

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Neural Regeneration Research 2025年第9期20卷 2513-2519页

作者： desmond A.Nunez Ru c.Guo division of Otolaryngology–Head&Neck Surgery Department of SurgeryFaculty of MedicineThe University of British ColumbiaVancouverBCCanada division of Otolaryngology–Head&Neck Surgery Gordon&Leslie Diamond Health Care CentreVancouver General HospitalVancouverBCCanada Faculty of Medicine–The University of British columbia VancouverBCCanada

Hearing loss is the third leading cause of human ***-related hearing loss,one type of acquired sensorineural hearing loss,is largely responsible for this escalating global health ***-induced,ototoxic,and idiopathic sudden sensorineural are other less common types of acquired hearing *** etiology of these conditions is complex and multi-fa ctorial involving an interplay of genetic and environmental *** stress has recently been proposed as a likely linking cause in most types of acquired sensorineural hearing *** non-coding RNA sequences known as microRNAs(miRNAs)have increasingly been shown to play a role in cellular hypoxia and oxidative stress responses including promoting an apoptotic *** hair cell death is a central histopathological finding in sensorineural hearing *** these cells do not regenerate in humans,it underlies the irreversibility of human age-related hearing *** EMBASE,Ovid MEdLINE,Web of Science core collection,and *** databases over the period August 1,2018 to July 31,2023 were searched with"hearing loss,""hypoxamiRs,""hypoxia,""microRNAs,""ischemia,"and"oxidative stress"text words for English language primary study publications or registered clinical *** red clinical trials known to the senior author we re also assessed.A total of 222studies were thus *** excluding duplicates,editorials,retra ctions,secondary research studies,and non-English language articles,39 primary studies and clinical trials underwent full-text *** resulted in 11 animal,in vitro,and/or human subject journal articles and 8 registered clinical trial database entries which form the basis of this narrative *** miR-34a and miR-29b levels increase with age in *** miRNAs were demonstrated in human neuroblastoma and murine cochlear cell lines to target Sirtuin 1/peroxisome proliferato r-activated receptor gamma coactivator-1-alpha(SIRT1/P Gc-1α),SIRT

关键词： hearing loss hypoxia microRNAs oxidative stress sensorineural

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Inducing imperfections in germanium nanowires

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Nano Research 2017年第5期10卷 1510-1523页

作者： Subhajit biswas Sven Barth Justin d. Holmes Materials chemistry & Analysis Group Department of Chemistry and the Tyndall National lnstitute University College Cork Cork Ireland AMBER@cRANN Trinity College Dublin Dublin 2 Ireland Vienna University of Technology Institute of Materials Chemistry Getreidemarkt 9/BCI02 1060 Vienna Austria

Nanowires with inhomogeneous heterostructures such as polytypes and periodic twin boundaries are interesting due to their potential use as components for optical, electrical, and thermophysical applications. Additionally, the incorporation of metal impurities in semiconductor nanowires could substantially alter their electronic and optical properties. In this highlight article, we review our recent progress and understanding in the deliberate induction of imperfections, in terms of both twin boundaries and additional impurities in germanium nanowires for new/enhanced functionalities. The role of catalysts and catalyst-nanowire interfaces for the growth of engineered nanowires via a three-phase paradigm is explored. Three-phase bottom-up growth is a feasible way to incorporate and engineer imperfections such as crystal defects and impurities in semiconductor nanowires via catalyst and/or interfacial manipulation. ＂Epitaxial defect transfer＂ process and catalyst-nanowire interfacial engineering are employed to induce twin defects parallel and perpendicular to the nanowire growth axis. By inducing and manipulating twin boundaries in the metal catalysts, twin formation and density are controlled in Ge nanowires. The formation of Ge polytypes is also observed in nanowires for the growth of highly dense lateral twin boundaries. Additionally, metal impurity in the form of Sn is injected and engineered via third-party metal catalysts resulting in above-equilibrium incorporation of Sn adatoms in Ge nanowires. Sn impurities are precipitated into Ge bi-layers during Ge nanowire growth, where the impurity Sn atoms become trapped with the deposition of successive layers, thus giving an extraordinary Sn content （〉6 at.%） in Ge nanowires. A larger amount of Sn impingement （〉9 at.%） is further encouraged by utilizing the eutectic solubility of Sn in Ge along with impurity trapping.

关键词： germamum nanowire vapor-liquid-solid (VLS)growth twinning impurity incorporation

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