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Cooper instability and superconductivity of the Penrose lattice

Science China(Physics,Mechanics & Astronomy) 2022年第8期65卷 110-120页

作者： Yu-Bo Liu juan-juan hao Yongyou Zhang Ye Cao Wei-Qiang Chen Fan Yang School of Physics Beijing Institute of TechnologyBeijing100081China Department of Physics Southern University of Science and TechnologyShenzhen518055China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen518055China Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices Southern University of Science and TechnologyShenzhen518055China

Bulk superconductivity(SC) has recently been observed in the Al-Zn-Mg quasicrystal(QC). To settle several fundamental issues of the SC on the QC, we use an attractive Hubbard model to perform a systematic study on the Penrose lattice. The first issue is the Cooper instability of the QC, i.e., no Fermi surface under an infinitesimal attractive interaction. Starting from the two-electron problem outside a filled Fermi sea, we analytically prove that an infinitesimal Hubbard attraction can lead to the Cooper instability as long as the density of the state is nonzero at the Fermi level. The findings provide a basis for the SC on the QC. Our numerical results show that the Cooper pairing always takes place between two time-reversal states, satisfying Anderson’s theorem. On this theorem, we perform a mean-field(MF) study at zero and finite temperatures. The MF study shows that an arbitrarily weak attraction can lead to a pairing order, with the resulting pairing state being well described by the Bardeen-Cooper-Schrieffer theory and the thermal dynamic behaviors being well consistent with the experimental results. The second issue is about the superfluid density on the QC without translational symmetry. Our findings clarify that although the normal state of the system locates at the critical point of the metal-insulator transition, the pairing state exhibits a real SC, carrying finite superfluid density that can be verified by the Meissner effect. This finding is consistent with the experiment results. This study also reveals that the properties of the SC on the Penrose lattice are universal for all QCs.

关键词： superconductivity quasicrystal cooper instability

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First-Principles Study of Hole-Doped Superconductors RNiO_(2)(R=Nd,La,and Pr)

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Chinese Physics Letters 2022年第6期39卷 29-33页

作者： juan-juan hao Pei-Han Sun Ming Zhang Xian-Xin Wu Kai Liu Fan Yang School of Physics Beijing Institute of TechnologyBeijing 100081China Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices Renmin University of ChinaBeijing 100872China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Max-Planck-Institut f¨ur Festk¨orperforschung Heisenbergstrasse 1D-70569 StuttgartGermany

Recent experiments have found that in contrast to the nonsuperconducting bulk RNiO_(2)(R=Nd,La,and Pr),the strontium-doped R_(1−x)Sr_(x)NiO_(2)thin films show superconductivity with the critical temperature T_(c)of 9–15K at x=0.2,whose origin of superconductivity deserves further *** on first-principles calculations,we study the electronic structure,lattice dynamics,and electron–phonon coupling(EPC)of the undoped and doped RNiO_(2)(R=Nd,La,and Pr)at the experimental doping *** results show that the EPC-derived T_(c)’s are all about 0K in the undoped and doped RNiO_(2).The electron–phonon coupling strength is too small to account for the observed *** hence propose that the electron–phonon interaction can not be the exclusive origin of the superconductivity in RNiO_(2)(R=Nd,La,and Pr).

关键词： superconductivity phonon coupling

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基于能值法对区域系统的数据采集与应用研究

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天津理工大学学报 2025年第1期41卷 145-152页

作者：郝如毅刘娟天津理工大学环境科学与安全工程学院

呼包鄂榆城市群是我国西北地区重要的城市群中心。基于能值理论的分析方法，对2020年呼包鄂榆城市群发展的各项数据进行采集、整理、计算后进行综合分析。结果显示：2020年呼包鄂榆城市群总能值中可更新资源能值的占比为0.24%、不可更... 详细信息

呼包鄂榆城市群是我国西北地区重要的城市群中心。基于能值理论的分析方法，对2020年呼包鄂榆城市群发展的各项数据进行采集、整理、计算后进行综合分析。结果显示：2020年呼包鄂榆城市群总能值中可更新资源能值的占比为0.24%、不可更新资源能值的占比较高，达95.67%;能值自给率为96%;区域环境负载率较高；能值产出率为24.46%;城市群能值密度和人均能值量超全国平均水平。可持续指标显示城市群为高度发达的“消费者”导向型经济体；健康能值指数表明呼包鄂榆城市群在城市健康评分分级标准中判定为“很健康”。最后根据数据结论，对呼包鄂榆城市群健康发展提出针对性对策和建议。

关键词：呼包鄂榆城市群能值理论可持续发展健康指数

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The influence of the stray-light component in determining coronal temperature structures

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Science China(Physics,Mechanics & Astronomy) 2009年第11期52卷 1728-1736页

作者： hao juan ZHANG Mei Key Laboratory of Solar Activity National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100012China

We use a few solar partial eclipse observations made by XRT/Hinode to estimate the influence of stray-light component in determining coronal temperature structures. Our analysis shows that the stray light will largely affect the estimation of coronal temperature and change the estimated temperature structure in one coronal hole region. The stray lights mildly influence the estimated temperatures in one quiet Sun region and do not change the estimated temperature structure. This implies that the influence of stray lights differs from one region to another, and definitely needs to be considered in some regions. Whereas a carefully estimated point-spread-function is needed to remove the stray light component, our study shows that by a simple approach such as subtracting the average intensity of distant (e.g. >1.4 solar radius) points from the data values, the influence of stray light can be largely removed, at least for the two regions we study here.

关键词： Sun: Corona Sun: X-rays

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A Mn-porphyrinic metal–organic framework immobilizing glucose oxidase for combined photodynamic/chemodynamic/starvation therapy

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Tungsten 2025年第1期 183-194页

作者： Xin-Ran Sun hao-Ming Yuan Guo-Da Zhang Chao Wang Shu-juan Sun Peng-Fei Shi Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers School of Chemistry and Chemical Engineering Linyi University

The combination of photodynamic therapy（PDT） and chemodynamic therapy（CDT） in tumor treatment has attracted considerable ***,tumor hypoxia and glutathione（GSH） overproduction in the tumor tissue restricted the progress of their ***,a Mn-porphyrinic metal-organic framework（Mn-TCPP） was constructed by the one-pot method and further used for immobilizing glucose oxidase（GOx） to obtain GOx@*** would rapidly exhaust endogenous glucose into hydrogen peroxide（H2O2） and gluconic acid,thus shutting off the energy supply of tumor cells for starvation ***-TCPP catalyzed H2O2to produce oxygen,regulating the hypoxic tumor microenvironment and in turn improving1O2generation under laser ***,Mn-TCPP can reduce reactive oxygen species consumption owing to the redox reaction between Mn3+and GSH,thus greatly enhancing ***,benefiting from GOx-mediated starvation therapy,Mn2+produced by Mn3+reduction can react with sufficient intracellular H2O2to generate ·OH with high cytotoxicity through a Fenton-like *** treatment by GOx@Mn-TCPP under laser irradiation in vitro,the cell viability of 4T1 and A549 tumor cells reached to 20%,reflecting GOx@Mn-TCPP could give full play to the advantages of PDT/CDT/starvation *** results in vivo demonstrated that GOx@Mn-TCPP mediated synergistic cascade therapy could significantly inhibit tumor growth and improve the therapeutic effect.

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Development and prospect of near-infrared spectroscopy-assisted schizophrenia diagnosis based on bibliometrics

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World Journal of Psychiatry 2025年第1期15卷 7-11页

作者： Yan Zhang hao-Yu Xing juan Yan Administration Office Lishui Second People’s HospitalLishui 323060Zhejiang ProvinceChina Department of Medical Engineering The Affiliated Mental Health Center&Hangzhou Seventh People's HospitalZhejiang University School of MedicineHangzhou 310013Zhejiang ProvinceChina Quality Control Office The Affiliated Mental Health Center&Hangzhou Seventh People's HospitalZhejiang University School of MedicineHangzhou 310013Zhejiang ProvinceChina

In this editorial,we comment on the recent article by Fei et al exploring the field of near-infrared spectroscopy(NIRS)research in schizophrenia from a bibliometrics *** recent years,NIRS has shown unique advantages in the auxiliary diagnosis of schizophrenia,and the introduction of bibliometrics has provided a macro perspective for research in this *** the opportunities brought about by these technological developments,remaining challenges require multidi-sciplinary approach to devise a reliable and accurate diagnosis system for ***,NIRS-assisted technology is expected to contribute to the division of methods for early intervention and treatment of schizophrenia.

关键词： Bibliometrics Schizophrenia Near-infrared spectroscopy Diagnostic technique Data analysis

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Enhancing output performance of triboelectric nanogenerator by increasing charge storage capacity of electrodes

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Nano Research 2025年第1期18卷 395-403页

作者： Congcong hao Zekun Wang Mingzhe Cai Shuaining Cheng Zhongxin Wang Cong Zhai juan Cui Yongqiu Zheng Chenyang Xue Key Laboratory of Instrumentation Science and Dynamic Measurement Ministry of Education North University of ChinaTaiyuan 030051China

ABSTRACT:The practical application of rotating triboelectric nanogenerators is often limited by the wear of high-friction surface materials and low surface charge *** addition to the charge pump replenishment strategy,suppressing charge decay is also crucial for increasing surface charge ***,we present a high performance rotary triboelectric nanogenerator(HPR-TENG)based on a coplanar charge pumping strategy and polyvinyl chloride(PVC)*** has been demonstrated that applying PVC film to the surface of the storage electrode of the main TENG(M-TENG)significantly enhances the M-TENG’s output ***,the HPR-TENG with three layers of PVC film pasted achieved the best output performance,with a peak-topeak output voltage of 2828 V,a peak-to-peak output current of 327μA and a charge transfer of 0.81μC at 500 *** addition,the output improvement effects of different materials are *** TENG with 3 layers of PVC film pasted on it has a maximum output power of 748 mW at a load resistance of 4×10^(6)Ω.HPR-TENG’s output performance remains consistent after 100,000 cycles,which shows excellent *** excellent electrical performance of the HPR-TENG can be used as the energy supply for the tip high-voltage breakdown sensor system,which can achieve 14 breakdowns in 10 *** to its extraordinary electrical performance,HPRTENG can not only serve as an energy supply for cutting-edge high-voltage breakdown sensor systems,but also has the potential to serve as an energy supply for high-pressure sterilization,high-pressure vacuum and water electrolysis.

关键词： triboelectric nanogenerator coplanar charge pump enhancing charge density suppressing charge decay polyvinyl chloride(PVC)film

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Mixed alkaline phosphatase/sphingomyelin monolayer at the air-buffer interface: phase behavior and morphology

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Science China Chemistry 2014年第11期57卷 1538-1543页

作者： WANG juan SUN RunGuang hao ChangChun Laboratory of Biophysics and Biomedicine College of Physics and Information Technology Shaanxi Normal University

The glycosylphosphatidyl inositol(GPI)-anchored proteins are localized on the outer of the plasma membrane and clustered in membrane microdomain known as lipid rafts. Among them, mammalian alkaline phosphatase(AP) is an enzyme widely distributed. So, it has important biological significance to study the combination of AP with lipid monolayer. In our work, the interaction between AP and sphingomyelin has been studied at the air-buffer interface as a biomimetic membrane system by the Langmuir film technique and atomic force microscopy. The surface pressure-area isotherm for the mixed alkaline phosphatase/sphingomyelin monolayer shown the presence of a transition from a liquid-expanded phase to the liquid-expanded/liquidcondensed coexist phase. And the surface compressional modulus suggested the mixed alkaline phosphatase/sphingomyelin monolayer has larger compressibility compared with the pure sphingomyelin monolayer. Besides, according to the micrographs, we inferred when combined with lipid monolayer at the air-buffer interface, the AP molecules formed polymer not multilayer or micelle. And, according to the limiting molecules area of AP, we inferred that 12 AP molecules formed a hexagon polymer unit.

关键词： alkaline phosphatase Langmuir monolayers GPI-anchored protein atomic force microscopy biomimetic systems

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Mothers’experiences of neonatal intensive care:A systematic review and implications for clinical practice

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World Journal of Clinical Cases 2021年第24期9卷 7062-7072页

作者： Li-Li Wang juan-juan Ma hao-hao Meng Jie Zhou Department of Pediatrics Shenzhen Nanshan People’s HospitalShenzhen 518052Guangdong ProvinceChina Department of Nursing Shenzhen Shekou People’s HospitalShenzhen 518067Guangdong ProvinceChina

BACKGROUND Preterm birth is on the rise *** intensive care units(NICUs)have enabled many critically ill newborns to *** a premature baby is admitted to the NICU,the mother–infant relationship may be interrupted,affecting the mother's mental *** To examine the maternal emotions associated with having a child in the NICU and provide suggestions for clinical *** MEDLINE,CINAHL,PsychARTICLES,and PsychINFO were searched for relevant articles between 2005 to 2019,and six qualitative articles were chosen that explored the experiences of mothers who had a preterm infant in the *** thematic analysis method was used to identify the most common *** Four main themes of the experience of mothers who had a preterm infant in the NICU were identified:Negative emotional impacts on the mother,support,barriers to parenting,and establishment of a loving *** NICU environment is not conducive to mother-child bonding,but we stipulate steps that health care professionals can take to reduce the negative emotional toll on mothers of NICU babies.

关键词： Neonatal intensive care units Preterm infant Maternal experience Mother-infant bond Implication Systematic review

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Polymers with tertiary amine groups for drug delivery and bioimaging

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Science China Chemistry 2016年第8期59卷 991-1002页

作者： Yu-juan Gao Zeng-Ying Qiao hao Wang CAS Center for Excellence in Nanoscience CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety National Center for Nanoscience and Techr ology Beijing 100190 China

Over the past decade, biopolymers have gained great interests especially in biomedicine due to their physical properties and/or chemical structures changes in response to external stimuli in a certain time fiarne or at a specific location. Among them, poly（β-amino ester）s, methacrylate-based block copolymers and polypeptide with tertiary amine groups have been extensively studied and exhibit pH sensitive properties due to the protonation of tertiary amine groups. The pH values in normal organs, tissues, and subcellular compartments are always different from those in pathological tissues. These interesting properties allow their applications in a variety of fields ranging from diagnosis and therapeutics of diseases. Here, we review the recent progress of poly（β-amino ester）s, methacrylate-based block copolymers and polypeptide with tertiary amine groups and their applications in drug delivery and bioimaging.

关键词： biopolymers tertiary amine groups pH-responsive drug delivery bioimaging

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