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Chinese Physics B 2018年第9期27卷 254-261页

作者： jarostaw h bauer Min Deng Katedra Fizyki Teoretycznej Wydzial Fizyki i lnformatyki Stosowanej Uniwersytetu LddzkiegoUI.Pomorska 149/153PL-90-236 LddlPoland State Key Laboratory o fLow-Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China

We derive the well-known Coulomb correction factor for the Gordon-Volkov wave function describing an outgoing electron in the process of ionization in an intense laser field. Although rigorous treatment would limit its use only to laser fields much lower than the so-called barrier-suppression field, it appears that in practice the correction factor may be used also close to and even above this critical value of the laser field. We compare predictions of several analytical expressions describing ionization rate of the hydrogen atom in its ground state in the strong linearly polarized laser field. We also compare ionization probabilities obtained by integrating these ionization rates over a temporal envelope of the laser pulse with predictions based on the exact numerical solution to the time-dependent Schr ¨odinger equation.

关键词： laser fields ionization S-matrix Coulomb-Volkov wave function

Chirality enables thermal magnon transistors

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Science China(Physics,Mechanics & Astronomy) 2024年第4期67卷 161-166页

作者： Tao Yu Chengyuan Cai Gerrit E.W.bauer School of Physics Huazhong University of Science and TechnologyWuhan 430074China .WPI-AIMR and Institute for Materials Research and SCIS Tohoku UniversitySendai 980-8577Japan Kavli Institute for Theoretical Sciences University of Chinese Academy of SciencesBeijing 100190China

We report a theory of thermal spin pumping into proximity magnets under a transverse-bias-driven heat flow of magnons in magnetic films when the dipolar coupling to the magnetic gate is tuned to be “chiral”. While there is no rectification of the magnon current in the film, we predict that chirality diverts a large percentage(50% for perfect chirality) of it into the gate. This transverse thermal spin pumping effect can be controlled by rotating the film magnetization and may help manage the heat flow in future magnonic circuits.

关键词： magnon chirality quantum transport transistor

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挠性双自旋卫星的姿态稳定判据

宇航学报 1991年第4期12卷 1-11页

作者：金梁 h.F.bauer 国防科技大学西德国防大学(Jnirersitdt der Bundeswehr Munchen)

本文建立了挠性双自旋卫星的姿态稳定性判据。挠性双自旋卫星由半刚性平台、转子以及固连于平台的挠性附件组成,选择由姿态角和模态坐标表示的系统的相对能量函数为Liapunov函数,由此建立的姿态稳定判据由两个部分组成,即忽略附件弹性... 详细信息

本文建立了挠性双自旋卫星的姿态稳定性判据。挠性双自旋卫星由半刚性平台、转子以及固连于平台的挠性附件组成,选择由姿态角和模态坐标表示的系统的相对能量函数为Liapunov函数,由此建立的姿态稳定判据由两个部分组成,即忽略附件弹性运动时,半刚性双自旋卫星的姿态稳定条件和附件振动频率所应满足的条件。文中还给出了具体的应用例子。

关键词：卫星双自旋姿态稳定

Saccharification versus simultaneous saccharification and fermentation of kraft pulp

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International Journal of Agricultural and Biological Engineering 2012年第1期5卷 48-55页

作者： Nichole A.bauer William R.Gibbons Biology-Microbiology Department South Dakota State UniversityBrookingsSD 57007USA

Enzymes are a significant cost in cellulosic ethanol production,minimizing their use would be desirable as long as ethanol yields and productivities are not *** aim was to evaluate the effects of enzyme dosage on conversion of cellulose to *** pulp,an intermediate in paper production,was used to represent a fractionated cellulose *** were conducted in a 5 L BioFlow bioreactor(2-3 L working volume)with agitation rate varied(80-900 r/m)to provide acceptable *** on survey of the literature,an average dosage for cellulase(34 FPU/g glucan)andβ-glucosidase(135 CBU/g glucan)was calculated,and these were set as the 100%*** of 1%,7%,13%,33%,67%,100%,133%were tested,using Novozyme Celluclast 1.5 L(cellulase)and Novozyme 188(β-glucosidase)in a 4.8%(dry mass)kraft pulp *** recommended dosages are at the low end of this spectrum,at 12 g/g glucan for Celluclast 1.5 L(35%dosage)and 1.2 g/g glucan for Novozyme 188(0.9%dosage).Saccharification trials(50oC)showed a typical dosage response,with the 133%dosage achieving the highest sugar concentration(~59 g/L glucose)and saccharification rate(2.45 g/L/h),with a specific rate of 2.2×10-4 g glucose/unit enzyme/*** the 13%enzyme dosage resulted in the highest specific saccharification rate(2.9×10-4 g glucose/unit enzyme/h).Simultaneous saccharification and fermentation(SSF)trials(35oC)were conducted using Saccharomyces cerevisiae or Candida molischiana to compare enzyme dosages of 33%,67%,100%,and 133%.Ethanol titers and productivities were similar for trials with 67%or more of the literature average enzyme dosage,however were lower at the 33%enzyme *** enzyme dosage can be substantially reduced from levels typically cited in the literature,but cannot be reduced to levels recommended by the manufacturer,without reduction in ethanol yield and productivity.

关键词： cellulosic ethanol fermentation saccharification renewable energy

The impact of fluorination on both donor polymer and non-fullerene acceptor:The more fluorine,the merrier

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Nano Research 2019年第9期12卷 2400-2405页

作者： Nicole bauer Qianqian Zhang Jeromy James Rech Shuixing Dai Zhengxing Peng harald Ade Jiayu Wang Xiaowei Zhan Wei You Department of Chemistry University of North Carolina at Chapel HillNorth Carolina 27599USA Department of Materials Science and Engineering College of EngineeringKey Laboratory of Polymer Chemistry and Physics of Ministry EducationPeking UniversityBeijing 100871China Department of Physics and ORaCEL North Carolina State UniversityRaleighNorth Carolina 27695USA

Fluorination of the donor polymer or non-fullerene acceptor (NFA) in an organic photovoltaic device is an effective method to improve device *** there have been many studies on donor polymer fluorination,blends containing both a fluorinated donor and fluorinated NFA have rarely been *** this study,we use two donor polymers (4'-FT-hTAZ and 4'-FT-FTAZ) and two NFAs (ITIC-Th and ITIC-Th1) with different amounts of fluorine (from 2F to 6F) to investigate how the degree of fluorination in a blend impacts device *** find that fluorinating the NFA leads to a higher short-circuit current density (Jsc) and fill factor (FF),however,the open-circuit voltage (Voc) is decreased due to a depressed lowest unoccupied molecular orbital (LUMO) *** additional fluorine to the donor polymer does not have a large effect on the Jsc or FF,but it does lead to an improved *** fluorinating the NFA and having more fluorine on the donor polymer,we obtain both a high Jsc and Voc simultaneously,leading to a power conversion efficiency over 10% in the case of 4'-FT-FTAZ:ITIC-Th1,which has the most amount of fluorine (6F).

关键词： organic solar cells non-fullerene acceptors fluorination bulk heterojunction

Corrosion behavior of Fe–Cr–Ni based alloys exposed to molten MgCl_(2)–KCl–NaCl salt with over-added Mg corrosion inhibitor

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Frontiers of Chemical Science and Engineering 2023年第10期17卷 1608-1619页

作者： Rui Yu Qing Gong hao Shi Yan Chai Alexander Bonk Alfons Weisenburger Dihua Wang Georg Müller Thomas bauer Wenjin Ding Institute for Pulsed Power and Microwave Technology Karlsruhe Institute of Technology(KIT)76344 Eggenstein-LeopoldshafenGermany School of Resources and Environmental Science Wuhan University(WHU)Wuhan 430072China Institute of Engineering Thermodynamics German Aerospace Center(DLR)70569 StuttgartGermany Institute of Engineering Thermodynamics German Aerospace Center(DLR)70569 CologneGermany

MgCl_(2)–NaCl–KCl salts mixture shows great potential as a high-temperature(>700°C)thermal energy storage material in next-generation concentrated solar power *** Mg into molten MgCl_(2)–NaCl–KCl salt as a corrosion inhibitor is one of the most effective and cost-effective methods to mitigate the molten salt corrosion of commercial Fe–Cr–Ni ***,it is found in this work that both stainless steel 310 and Incoloy 800h samples were severely corroded after 500 h immersion test at 700°C when the alloy samples directly contacted with the over-added Mg in the liquid *** corrosion attack is different from the classical impurity-driven corrosion in molten chloride salts found in previous *** analysis indicates that Ni preferentially leaches out of alloy matrix due to the tendency to form MgNi_(2)/Mg_(2)Ni *** Ni-depletion leads to the formation of a porous corrosion layer on both alloys,with the thickness around 204μm(stainless steel 310)and 1300μm(Incoloy 800h),*** results suggest that direct contact of liquid Mg with Ni-containing alloys should be avoided during using Mg as a corrosion inhibitor for MgCl_(2)–NaCl–KCl or other chlorides for high temperature heat storage and transfer.

关键词： concentrated solar power(CSP) Mg corrosion inhibitor Mg-Ni intermetallic salt purification thermal energy storage(TES)

A facile strategy for tuning the density of surface-grafted biomolecules for melt extrusion-based additive manufacturing applications

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Bio-Design and Manufacturing 2024年第3期7卷 277-291页

作者： I.A.O.Beeren G.Dos Santos P.J.Dijkstra C.Mota J.bauer h.Ferreira Rui L.Reis N.Neves S.Camarero-Espinosa M.B.Baker L.Moroni Department of Complex Tissue Regeneration MERLN Institute for Technology-Inspired Regenerative MedicineMaastricht University6229 ER MaastrichtThe Netherlands 3B’s Research Group I3Bs–Research Institute on BiomaterialsBiodegradables and BiomimeticsHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineUniversity of MinhoAveParkZona Industrial da Gandra4805-017 BarcoGuimarãesPortugal ICVS/3B’s-PT Government Associate Laboratory 4806-909 Braga/GuimarãesPortugal POLYMAT University of the Basque Country UPV/EHU20018 Donostia/San SebastiánSpain IKERBASQUE Basque Foundation for Science48009 BilbaoSpain

Melt extrusion-based additive manufacturing(ME-AM)is a promising technique to fabricate porous scaffolds for tissue engi-neering ***,most synthetic semicrystalline polymers do not possess the intrinsic biological activity required to control cell *** of biomolecules on polymeric surfaces of AM scaffolds enhances the bioactivity of a construct;however,there are limited strategies available to control the surface ***,we report a strategy to tune the surface density of bioactive groups by blending a low molecular weight poly(ε-caprolactone)5k(PCL5k)containing orthogonally reactive azide groups with an unfunctionalized high molecular weight PCL75k at different *** porous three-dimensional(3D)scaf-folds were then fabricated using a high weight percentage(75 wt.%)of the low molecular weight PCL *** a proof-of-concept test,we prepared films of three different mass ratios of low and high molecular weight polymers with a thermopress and reacted with an alkynated fluorescent model compound on the surface,yielding a density of 201-561 pmol/cm^(2).Subsequently,a bone morphogenetic protein 2(BMP-2)-derived peptide was grafted onto the films comprising different blend compositions,and the effect of peptide surface density on the osteogenic differentiation of human mesenchymal stromal cells(hMSCs)was *** two weeks of culturing in a basic medium,cells expressed higher levels of BMP receptor II(BMPRII)on films with the conjugated *** addition,we found that alkaline phosphatase activity was only significantly enhanced on films contain-ing the highest peptide density(i.e.,561 pmol/cm^(2)),indicating the importance of the surface *** together,these results emphasize that the density of surface peptides on cell differentiation must be considered at the cell-material ***,we have presented a viable strategy for ME-AM community that desires to tune the bulk and surface functionality via blending of(m

关键词： Additive manufacturing Blending Surface functionalization Surface density Click chemistry human

Biochemical and Physiological Responses of Arabidopsis thaliana Leaves to Moderate Mechanical Stimulation

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Phyton-International Journal of Experimental Botany 2023年第3期92卷 901-920页

作者： Iva Šutevski Klara Krmpotić Sandra Vitko Nataša bauer Eva Fancev Mario Cifrek Željka Vidaković-Cifrek Department of Biology Faculty of ScienceUniversity of ZagrebZagreb10000Croatia Faculty of Electrical Engineering and Computing University of ZagrebZagreb10000Croatia

Mechanical stimulation of plants can be caused by various abiotic and biotic environmental *** from the negative consequences,it can also cause positive changes,such as acclimatization of plants to stress ***,it is necessary to study the physiological and biochemical mechanisms underlying the response of plants to mechanical *** aim was to evaluate the response of model plant Arabidopsis thaliana to a moderate force of 5 N(newton)for 20 s,which could be compared with the pressure caused by animal movement and weather conditions such as heavy *** stimulated leaves were sampled 1 h after exposure and after a recovery period of 20 *** study a possible systemic response,unstimulated leaves of treated plants were collected 20 h after exposure alongside the stimulated leaves from the same *** effect of stimulation was assessed by measuring oxidative stress parameters,antioxidant enzymes activity,total phenolics,and photosynthetic *** leaves showed increased lipid peroxidation 1 h after treatment and increased superoxide dismutase activity and phenolic oxidation rate after a 20-h recovery *** photosynthetic performance after the 20-h recovery period,the effective quantum yield of the photosystem II was lower in the stimulated leaves,whereas photochemical quenching was lower in the unstimulated leaves of the treated *** quenching was lower in the stimulated leaves 1 h after *** study suggested that plants sensed moderate force,but it did not induce pronounced change in metabolism or photosynthetic *** component analysis distinguished three groups–leaves of untreated plants,leaves analysed 1 h after stimulation,while stimulated and unstimulated leaves of treated plants analysed 20 h after treatment formed together the third *** grouping of stimulated and unstimulated leaves of treated plants could indicate signal transducti

关键词： Arabidopsis thaliana mechanical stimulation oxidative stress antioxidant enzymes photosynthetic performance systemic response

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一氧化碳合成金刚石薄膜的形貌和结构分析

物理学报 2007年第11期56卷 6572-6579页

作者：刘燕燕 E.bauer-Grosse 张庆瑜大连理工大学三束材料改性国家重点实验室 Laboratoire de Science et G nie des Surfaces Ecole des MinesNancy 54042France

利用微波等离子体化学气相沉积(MPCVD)技术,采用偏压增加成核(BEN)、两步生长的方法在一氧化碳(CO)和氢气(h2)的环境下制备了金刚石薄膜.利用扫描电子显微镜(SEM)、Raman光谱仪和透射电子显微镜(TEM)对金刚石薄膜的形貌和结构进行了分析... 详细信息

利用微波等离子体化学气相沉积(MPCVD)技术,采用偏压增加成核(BEN)、两步生长的方法在一氧化碳(CO)和氢气(h2)的环境下制备了金刚石薄膜.利用扫描电子显微镜(SEM)、Raman光谱仪和透射电子显微镜(TEM)对金刚石薄膜的形貌和结构进行了分析.研究发现金刚石晶粒在第一步成核及生长的过程中产生了层错和孪晶,而在第二步的生长过程中产生的层错和孪晶很少,最终形成的金刚石晶粒外表面比较光滑,包含有近五次对称或者平行的片状的孪晶,并可以观察到少量的位错.而在样品的边缘由于等离子体的不均匀产生了比样品中心成核密度低的区域.在这个区域中,发现了一个新的非金刚石的碳结构.

关键词：金刚石薄膜 Raman光谱透射电子显微镜结构

微波等离子体化学气相沉积合成掺氮金刚石薄膜的缺陷和结构特征及其生长行为

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物理学报 2007年第4期56卷 2359-2368页

作者：刘燕燕 E.bauer-Grosse 张庆瑜大连理工大学三束材料改性国家重点实验室 Laboratoire de Science et Génie des Surfaces Ecole des MinesNancy 54042France

采用微波等离子体化学气相沉积(MPCVD)技术,在甲烷和氢气的混合气体中,通过掺入微量氮气的方法,合成了掺氮金刚石薄膜.利用扫描电子显微镜、拉曼光谱和透射电子显微镜对薄膜的形貌和结构进行了表征.研究结果表明:处于基片中心位置的薄... 详细信息

采用微波等离子体化学气相沉积(MPCVD)技术,在甲烷和氢气的混合气体中,通过掺入微量氮气的方法,合成了掺氮金刚石薄膜.利用扫描电子显微镜、拉曼光谱和透射电子显微镜对薄膜的形貌和结构进行了表征.研究结果表明:处于基片中心位置的薄膜具有比较高的成核密度,成核密度高达4.8×108cm-2,并且具有〈001〉的择优取向,晶粒呈立方金刚石特征,但沿{111}晶面生长时存在大量层错.处于基片边缘的薄膜成核密度较低,晶粒为6h型多型金刚石结构,而且多型金刚石的出现,导致金刚石孪晶关系的变化.此外,根据薄膜的生长速率,探讨了MPCVD过程中掺氮对薄膜生长行为的影响.

关键词：金刚石结构表征透射电子显微镜多型金刚石