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Local magnetic moment oscillation around an Anderson impurity on graphene

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 192-201页

作者： Shuai Li Zhen Ma Jin-Hua Gao School of Science Hebei University of Science and Technology School of electronics and Information Zhengzhou University of Light Industry School of Physics and Wuhan National High Magnetic Field center Huazhong University of Science and Technology

We theoretically investigate the spin resolved Friedel oscillation （FO） and quasiparticle interference （QPI） in graphene induced by an Anderson *** the impurity becomes magnetic,the resulted FO becomes spin dependent,which gives rise to a local magnetic moment oscillation with an envelop decaying as r-2in real space in the doping ***,at half filling,the electron density and local magnetic moment will not oscillate but decay as *** spin resolved FO has both sublattice and spin ***,the local magnetic moment decay at half filling only occurs at one sublattice of graphene,which is quite like the phenomenon observed in the STM experiment (***ález-Herrero et al.,Science 352,437 （2016）).We further give an analytic formula about such spin dependent FO based on the stationary phase ***,we study the interference of quasiparticles around the magnetic impurity by calculating the spin dependent Fourier-transformed local density of states （FT-LDOS）.Our work gives a comprehensive understanding about the local magnetic moment oscillation around an Anderson impurity on graphene.

关键词： Friedel oscillation local magnetic moment graphene Anderson impurity

flexible Healthcare Sensors for Disruptive Medical Techniques

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材料导报 2020年第15期34卷 15001-15002页

作者： XU Manzhang WANG Xuewen HUANG Wei Frontiers Science center for flexible electronics(FSCFE)&Shaanxi Institute of flexible electronics(SIFE) Northwestern Polytechnical UniversityXi’an 710072China

flexible healthcare sensors could significantly change the diagnose towards portable,wearable,remote,and timely,that will breed the revolutionary and disruptive medical technique for traditional diagnosis in clinical practice[1-4].As schematically illustrated in Fig.1a,traditional disease diagnosis always requires patients to go to hospital for diagnosis which is time-consuming and takes up a lot of medical ***,wearable health-monitoring was demonstrated by flexible healthcare sensors for telemedicine applications[5].Health-related physiological signals will be collected by flexible sensors and transmitted to hospital and database for analysis(Fig.1b).The database needs doctors input by completing the relationship between physiological signals and body *** accuracy of diagnosis results mainly depends on the integrity of the ***,wearable health monitoring provides a convenient way for disease diagnosis,but the doctor s role is still crucial and irreplaceable.

关键词： diagnosis doctor replace

Two-dimensional Conductive Metal-Organic Framework Nanowire Arrays for Highly Performed Soft Electrochemical Actuators

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材料导报 2021年第9期35卷 9001-9002页

作者： ZHAO Ruoqing WU Hao WEI Yuan WANG Xuewen Frontiers Science center for flexible electronics(FSCFE)&Shaanxi Institute of flexible electronics(SIFE) Northwestern Polytechnical UniversityXi’an 710072China

Fig.1(a)Schematic illustration of the fabrication of a Ni-CAT NWAs/CNF hybrid membrane by the in situ hydrothermal growth of Ni-CAT NWAs on CNF;SEM images of(b)the pristine CNF nanomembrane and(c)Ni-CAT NWAs/CNF,and(d)size distribution statistics of the diameter of Ni-CAT NWAs/CNF;schematic illustrations of(e)the fabrication procedure for the Ni-CAT NWAs/CNF-based actuator,(f)Ni-CAT NWAs/CNF electrode surfaces and Ni-CAT along the c-axis(Color codes:O,red spheres;C,gray spheres;and Ni,blue spheres);(g)actuation performance of the Ni-CAT NWAs/CNF based actuator The demand for high-performance low-voltage driven electromechanical actuators is growing because of their potential applications,such as in soft robotics,artificial muscles,biomimetic flying insects,and micro/nano-electromechanical systems[1].Among these actuators,ionic-polymer metal composite actuators(IPMCs)are promising as they are capable of large actuation deformation under low operation voltages(only a few volts),and they operate best in a humid environment[2].However,although extensive efforts have been made in past decades,developing high-capacitance electrode materials that improve the performance of IPMCs is challenging.

关键词： composite illustration spheres

The emerging role of mesenchymal stem cell-derived extracellular vesicles to ameliorate hippocampal NLRP3 inflammation induced by binge-like ethanol treatment in adolescence

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Neural Regeneration research 2025年第4期20卷 1153-1163页

作者： Susana Mellado María JoséMorillo-Bargues Carla Perpiñá-Clérigues Francisco García-García Victoria Moreno-Manzano Consuelo Guerri María Pascual Department of Physiology School of Medicine and DentistryUniversity of ValenciaValenciaSpain Bioinformatics and Biostatistics Unit Príncipe Felipe Research CenterValenciaSpain Neuronal and Tissue Regeneration Laboratory Príncipe Felipe Research CenterValenciaSpain

Our previous studies have reported that activation of the NLRP3(NOD-,LRR-and pyrin domain-containing protein 3)-inflammasome complex in ethanol-treated astrocytes and chronic alcohol-fed mice could be associated with neuroinflammation and brain *** stem cell-derived extracellular vesicles(MSC-EVs)have been shown to restore the neuroinflammatory response,along with myelin and synaptic structural alterations in the prefrontal cortex,and alleviate cognitive and memory dysfunctions induced by binge-like ethanol treatment in adolescent *** the therapeutic role of the molecules contained in mesenchymal stem cell-derived extracellular vesicles,the present study analyzed whether the administration of mesenchymal stem cell-derived extracellular vesicles isolated from adipose tissue,which inhibited the activation of the NLRP3 inflammasome,was capable of reducing hippocampal neuroinflammation in adolescent mice treated with binge *** demonstrated that the administration of mesenchymal stem cell-derived extracellular vesicles ameliorated the activation of the hippocampal NLRP3 inflammasome complex and other NLRs inflammasomes(e.g.,pyrin domain-containing 1,caspase recruitment domain-containing 4,and absent in melanoma 2,as well as the alterations in inflammatory genes(interleukin-1β,interleukin-18,inducible nitric oxide synthase,nuclear factor-kappa B,monocyte chemoattractant protein-1,and C–X3–C motif chemokine ligand 1)and miRNAs(miR-21a-5p,miR-146a-5p,and miR-141-5p)induced by binge-like ethanol treatment in adolescent *** analysis further revealed the involvement of miR-21a-5p and miR-146a-5p with inflammatory target genes and NOD-like receptor signaling *** together,these findings provide novel evidence of the therapeutic potential of MSC-derived EVs to ameliorate the hippocampal neuroinflammatory response associated with NLRP3 inflammasome activation induced by binge drinking in adolescence.

关键词： adolescence binge-like ethanol treatment extracellular vesicles hippocampus mesenchymal stem cells neuroinflammation NOD-,LRR-and pyrin domain-containing protein 3(NLRP3)

Analytical investigation on thermal-induced warpage behavior of ultrathin chip-on-flex(UTCOF) assembly

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Science China(Technological Sciences) 2016年第11期59卷 1646-1655页

作者： CHEN JianKui XU ZhouLong HUANG YongAn DUAN YongQing YIN ZhouPing State Key Laboratory of Digital Manufacturing Equipment and Technology Flexible Electronics Research Center Huazhong University of Science and Technology

The serious warpage issues of ultrathin chip-on-flex(UTCOF) assembly induced by mismatched thermal stresses have greatly affected the mechanical stability and reliability of emerging ultrathin chip packaging technology. Currently, a theoretical prediction as a convenient and straightforward approach is still lacked for describing effectively the thermal-mechanical behavior of UTCOF during the adhesive curing and cooling process. In consideration of the adhesive thickness approximating to ultrathin chip and flexible substrate thickness, we develop a layerwise-model of ultrathin chip-adhesive-flex structure under plain strain condition, where the behavior of thick adhesive bonding can be described precisely through increasing the subdivided mathematical plies. Further, the analytical results show that the concave and convex forms of ultrathin chip warpage yield at the end of the curing and cooling process respectively. Meanwhile, the effects of its structure dimensions and material properties are also revealed for discussing a way to relieve the extent of ultrathin chip warpage. Additionally, in order to verify the validity of the theoretical prediction, we also introduce the corresponding numerical technique and experimental method. These results suggest that a kind of rigid and ultrathin flexible substrate such as metal foil should be adopted for small warpage of ultrathin assembly.

关键词： microelectronic packaging warpage layerwise theory ultrathin chip

Review on flexible photonics/electronics integrated devices and fabrication strategy

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Science China(Information Sciences) 2018年第6期61卷 5-31页

作者： Shisheng CAI Zhiyuan HAN Fengle WANG Kunwei ZHENG Yu CAO Yinji MA Xue FENG Applied Mechanics Laboratory Department of Engineering Mechanics Tsinghua University Interdisciplinary research center for flexible electronics Technology Tsinghua University

In recent years, to meet the greater demand for next generation electronic devices that are transplantable, lightweight and portable, flexible and large-scale integrated electronics attract much more attention have been of interest in both industry and academia. Organic electronics and stretchable inorganic electronics are the two major branches of flexible electronics. With the semiconductive and flexible properties of the organic semiconductor materials, flexible organic electronics have become a mainstay of our *** to organic electronics, stretchable and flexible inorganic electronics are fabricated via mechanical design with inorganic electronic components on flexible substrates, which have stretchability and flexibility to enable very large deformations without degradation of performance. This review summarizes the recent progress on fabrication strategies, such as hydrodynamic organic nanowire printing and inkjet-assisted nanotransfer printing of flexible organic electronics, and screen printing, soft lithography and transfer printing of flexible inorganic electronics. In addition, this review considers large-scale organic and inorganic flexible electronic systems and the future applications of flexible and stretchable electronics.

关键词： flexible and stretchable electronics organic photonics/electronics inorganic photonics/electronics fabrication strategies flexible electronic system

Nanoporous MoO_(3−x)/BiVO_(4)photoanodes promoting charge separation for efficient photoelectrochemical water splitting

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Nano research 2022年第8期15卷 7026-7033页

作者： Songcan Wang Boyan Liu Xin Wang Yingjuan Zhang Wei Huang Frontiers Science center for flexible electronics Xi’an Institute of Flexible Electronics(IFE)Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi’an 710072China

Owing to the relatively short hole diffusion length,severe charge recombination in the bulk of bismuth vanadate(BiVO_(4))is the key issue for photoelectrochemical water ***,we design a nanoporous MoO_(3−x)/BiVO_(4)heterojunction photoanode to promote charge *** efficient electron transport properties of oxygen deficient MoO_(3−x)and the nanoporous structure are beneficial for charge separation,leading to a significantly enhanced PEC *** optimized MoO_(3−x)/BiVO_(4)heterojunction photoanode exhibits a photocurrent density of 5.07 mA·cm^(−2)for Na_(2)SO_(3)*** depositing FeOOH/NiOOH dual oxygen evolution cocatalysts to promote surface kinetics,a high photocurrent density of 4.81 mA·cm^(−2)can be achieved for PEC water splitting,exhibiting an excellent applied bias photon-to-current efficiency of 1.57%.Moreover,stable overall water splitting is achieved under consecutive light illumination for 10 *** provide a proof of concept for the design of efficient BiVO_(4)-based heterojunction photoanodes for stable PEC water splitting.

关键词： water splitting bismuth vanadate heterojunction oxygen vacancies charge separation

Treadmill exercise in combination with acousto-optic and olfactory stimulation improves cognitive function in APP/PS1 mice through the brain-derived neurotrophic factor-and Cygb-associated signaling pathways

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Neural Regeneration research 2025年第9期20卷 2706-2726页

作者： Biao Xiao Chaoyang Chu Zhicheng Lin Tianyuan Fang Yuyu Zhou Chuxia Zhang Jianghui Shan Shiyu Chen Liping Li Department of Physiology and Pharmacology Health Science CenterNingbo UniversityNingboZhejiang ProvinceChina Ningbo Key Laboratory of Behavioral Neuroscience Health Science CenterNingbo UniversityNingboZhejiang ProvinceChina Key Laboratory of Addiction research of Zhejiang Province NingboZhejiang ProvinceChina

A reduction in adult neurogenesis is associated with behavioral abnormalities in patients with Alzheimer's ***,enhancing adult neurogenesis represents a promising therapeutic approach for mitigating disease symptoms and ***,nonpharmacological interventions aimed at inducing adult neurogenesis are currently *** individual non-pharmacological interventions,such as aerobic exercise,acousto-optic stimulation,and olfactory stimulation,have shown limited capacity to improve neurogenesis and cognitive function in patients with Alzheimer's disease,the therapeutic effect of a strategy that combines these interventions has not been fully *** this study,we observed an age-dependent decrease in adult neurogenesis and a concurrent increase in amyloid-beta accumulation in the hippocampus of amyloid precursor protein/presenilin 1 mice aged 2-8 *** deposition became evident at 4 months,while neurogenesis declined by 6 months,further deteriorating as the disease ***,following a 4-week multifactor stimulation protocol,which encompassed treadmill running(46 min/d,10 m/min,6 days per week),40 Hz acousto-optic stimulation(1 hour/day,6 days/week),and olfactory stimulation(1 hour/day,6 days/week),we found a significant increase in the number of newborn cells(5'-bromo-2'-deoxyuridine-positive cells),immature neurons(doublecortin-positive cells),newborn immature neurons(5'-bromo-2'-deoxyuridine-positive/doublecortin-positive cells),and newborn astrocytes(5'-bromo-2'-deoxyuridine-positive/glial fibrillary acidic protein-positive cells).Additionally,the amyloid-beta load in the hippocampus *** findings suggest that multifactor stimulation can enhance adult hippocampal neurogenesis and mitigate amyloid-beta neuropathology in amyloid precursor protein/presenilin 1 ***,cognitive abilities were improved,and depressive symptoms were alleviated in amyloid precursor protein/presenilin 1 mice

关键词： acousto-optic stimulation adult neurogenesis Alzheimer's disease amyloid precursor protein/presenilin 1 mice amyloid-beta deposition brain cell apoptosis cognitive impairment depression-like behavior involuntary treadmill exercise olfactory stimulation serum metabolites

flexible Monitoring,Diagnosis,and Therapy by Microneedles with Versatile Materials and Devices toward Multifunction Scope

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research 2023年第4期2023卷 793-820页

作者： Shuo Wang Mengmeng Zhao Yibo Yan Peng Li Wei Huang Frontiers Science center for flexible electronics(FSCFE) Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi'anChina

Microneedles(MNs)have drawn rising attention owing to their merits of convenience,noninvasiveness,flexible applicability,painless microchannels with boosted metabolism,and precisely tailored multifunction *** can be modified to serve as novel transdermal drug delivery,which conventionally confront with the penetration barrier caused by skin stratum *** micrometer-sized needles create channels through stratum corneum,enabling efficient drug delivery to the dermis for gratifying ***,incorporating photosensitizer or photothermal agents into MNs can conduct photodynamic or photothermal therapy,***,health monitoring and medical detection by MN sensors can extract information from skin interstitial fluid and other biochemical/electronic ***,this review discloses a novel monitoring,diagnostic,and therapeutic pattern by MNs,with elaborate discussion about the classified formation of MNs together with various applications and inherent ***,multifunction development and outlook from biomedical/nanotechnology/photoelectric/devices/informatics to multidisciplinary applications are *** intelligent MNs enable logic encoding of diverse monitoring and treatment pathways to extract signals,optimize the therapy efficacy,real-time monitoring,remote control,and drug screening,and take instant treatment.

关键词： stratum sized enable