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Mechanically driven assembly of biomimetic 2D-material microtextures with bioinspired multifunctionality

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Nano Research 2024年第2期17卷 663-678页

作者： yang Li Lin Jing Joshua M.Little Haochen yang tsai-Chun Chung Po-yen Chen Department of Chemical and Biomolecular Engineering University of MarylandCollege ParkMD 20740USA Maryland Robotics Center University of MarylandCollege ParkMD 20742USA School of Materials Science and Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore

Nature provides a wealth of bio-inspiration for advanced material *** various nanomaterials into biomimetic microtextures with bioinspired functionalities has spurred increasing research interests and facilitated technological advances in various *** recent years,two-dimensional materials(2DMs)have emerged as important building block units in the biomimicry field due to their distinct chemical,physical,electrical,electrochemical,and catalytic *** this review article,various mechanically driven assembly approaches are summarized to fabricate various genealogies of biomimetic 2DM microtextures with bio-inspired ***,sequential deformation strategies are discussed to programmably construct higher dimensional 2DM microtextures,ranging from wrinkles/crumples(one-time deformation)to multiscale hierarchies(multiple deformations).Next,the current progress using higher dimensional 2DM microtextures to imitate different biological structures and/or induce bio-inspired multifunctionality is systematically *** showcases of bio-inspiration and biomimicry using different 2DM nanosheets are highlighted:(1)wrinkle patterns of an earthworm that spur the design of strain sensors with programmable working ranges and sensitivities,(2)wrinkle appearance of a Shar-Pei dog that motivates the fabrication of stretchable energy storage devices,(3)hierarchical scale textures of a desert lizard that inspire cation-induced gelation platforms for 2DM aerogels,and(4)wrinkle skin of an elephant that influences the development of 2DM protective skin for soft ***,challenges and future opportunities of adopting 2DM nanosheets to assemble biomimetic microstructures with synergistic functionalities are discussed.

关键词： two-dimensional(2D)materials mechanically driven assembly biomimetic microtextures functional nanocomposite bio-inspired multifunctionality

Optical Extinctions of Inter-Arm Molecular Clouds in M31:A Pilot Study for the Upcoming CSST Observations

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Research in Astronomy and Astrophysics 2024年第6期24卷 323-333页

作者： Cailing Chen Zheng Zheng Chao-Wei tsai Sihan Jiao Jing Tang Jingwen Wu Di Li yun Zheng Linjing Feng yujiao yang yuan Liang National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Radio Astronomy and Technology Chinese Academy of SciencesBeijing 100101China Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 102206China Zhejiang Lab Hangzhou 311121China

Recent submillimeter dust thermal emission observations have unveiled a significant number of inter-arm massive molecular clouds in ***,the effectiveness of this technique is limited to its sensitivity,making it challenging to study more distant *** study introduces an alternative approach,utilizing optical extinctions derived from space-based telescopes,with a focus on the forthcoming China Space Station Telescope(CSST).We first demonstrate the capability of this method by constructing dust extinction maps for 17 inter-arm massive molecular clouds in M31 using the Panchromatic Hubble Andromeda Treasury *** analysis reveals that inter-arm massive molecular clouds with an optical extinction(A_(V)) greater than 1.6 mag exhibit a notable A_(V) excess,facilitating their *** majority of these inter-arm massive molecular clouds show an A_(V) around 1 mag,aligning with measurements from our JCMT *** validation using a mock CSST RGB star catalog confirms the method's *** show that the derived A_(V)values using CSST z and y photometries align more closely with the input *** clouds with A_(V)> 1.6 mag can also be identified using the CSST mock *** thus claim that future CSST observation clouds provide an effective way for the detection of inter-arm massive molecular clouds with significant optical extinction in nearby galaxies.

关键词： infrared:stars ISM:clouds Galaxy:structure

Digital finance and renewable energy consumption:evidence from China

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Financial Innovation 2022年第1期8卷 1384-1402页

作者： Minli yu Fu-Sheng tsai Hui Jin Hejie Zhang College of Economics Zhejiang University of TechnologyHangzhou 310032China College of Economics and Man-agement Changzhou Institute of TechnologyChangzhou 213032China North China University of Water Resources and Electric Power ZhengzhouChina Department of Business Administration Cheng Shiu University(CSU)No.840Chengcing Rd.Niaosong DistrictKaohsiungTaiwan Center for Environmental Toxin and Emerging-Contaminant Research CSUKaohsiungTaiwan Super Micro Mass Research and Technology Center CSUKaohsiungTaiwan School of Economics and Management Zhejiang Sci-Tech UniversityHangzhouChina

While digital finance and renewable energy consumption(REC)are two timely issues,it remains unclear whether the former affects the latter,especially in developing *** paper examines the impact of digital finance on China’s REC between 2011 and 2018 and explores the underlying *** show that digital finance,along with its coverage breadth and usage depth,significantly improved REC in China and that digital finance in the area of credit has had the most significant ***,the results show that loan scale and income level are the main mediation variables,through which digital finance affects *** findings also suggest that economic growth and technological progress have increased REC in China,while carbon dioxide emissions have had no meaningful effect on this *** results further indicate that policymakers must pay close attention to the role of digital finance when formulating policies on *** promote REC and environmental sustainability,developing economies like China should strengthen the breadth and depth of digital finance development,focus on the influence channels of digital finance,and promote economic growth and technological progress.

关键词： Digital finance Renewable energy consumption Developing economy Two-way fixed effects model

A Statistical Study on Seismo-Ionospheric Anomalies of the Total Electron Content for the Period of 56 M≥6.0 Earthquakes Occurring in China During 1998—2012

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空间科学学报 2013年第3期33卷 258-269页

作者： Liu J y Chen C H tsai H F Le H Institute of Space Science National Central University Center for Space and Remote Sensing Research National Central University Department of Earth Science National Cheng Kung University GPS Science and Application Research Center National Central University Key Laboratory of Ionospheric Environment Institute of Geology and GeophysicsChinese Academy of Sciences

This paper reports statistical results of Seismo-Ionospheric Anomalies(SIAs) of the Total Electron Content(TEC) in the Global Ionosphere Map(GIM) associated with 56 M≥6.0 earthquakes in China during 1998—*** detect SIA,a quartile-based(***-based) process is *** anomalies for the period of earthquakes without being led by magnetic storms about 10 days are further isolated and examined to confirm the SIP *** show that SIA is the TEC significantly decrease in the afternoon period 2—9 days before the earthquakes in China,which is in a good agreement with the SIA appearing before the 12 May 2008 M 8.0 Wenchuan earthquake.

关键词：电离层异常地震发生总电子含量中国统计 SIAS TEC GIM

Variability in rainfall threshold for debris flow after the Chi-Chi earthquake in central Taiwan,China

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International Journal of Sediment Research 2009年第2期24卷 177-188页

作者： C. L. SHIEH y. J. tsai Department of Hydraulic and Ocean Engineering National Cheng Kung University Student Department of Hydraulic and Ocean EngineeringNational Cheng Kung University

The purpose of this study is to analyze variability in rainfall threshold for debris flow(critical rainfall for debris flow triggering) after the ML 7.3 Chi-Chi earthquake in central Taiwan in 1999. Two study sites with different geological conditions were surveyed in the earthquake area. Streambed surveys were conducted to continuously monitor debris flows between 1999 and 2006. During the 7-year study period,every debris flow event was identified,and the streambed characterized. Results show that the rainfall threshold for debris flow was remarkably lower just after the Chi-Chi Earthquake,but gradually recovered. To date,this rainfall threshold is still lower than the original level prior to the earthquake. This variability in rainfall threshold is closely related to the amount of sediment material in the initiation area of debris flow,which increased rapidly due to landslides resulting from the earthquake. With the increase in sediment material,the rainfall threshold was lowered severely during the first year following the Chi-Chi earthquake. However,heavy rainfalls mobilized the sediment material,causing debris flows and transporting sediment downstream. With the decrease in sediment material,the rainfall threshold recovered gradually over time. Furthermore,debris flows occurred only in the subbasins that had sufficient sediment material to cause significant movement. Hence,these results confirm that the sediment material in the initiation area of debris flow is a crucial component of the rainfall threshold for debris flow.

关键词： Debris flow Rainfall threshold Sediment material Earthquake Landslide

Solid codes and the uniform density of fd-domains

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Science China Mathematics 2007年第7期50卷 1026-1034页

作者： yen-Shung tsai College of Science Chung Yuan Christian UniversityChung-Li 320TaiwanChina

By means of further investigation of solid codes,the problem“Is every fd-domain uni- formly dense”proposed by yuqi Guo,*** and *** in 1988 is solved in this paper.

关键词： solid code fd-domain uniformly dense language

TREATMENT OF METALS, POLyMER FILMS, AND FABRICS WITHA ONE ATMOSPHERE UNIFORM GLOW DISCHARGE PLASMA(OAUGDP) FOR INCREASED SURFACE ENERGy AND DIRECTIONAL ETCHING

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Acta Metallurgica Sinica(English Letters) 2001年第6期14卷 391-407页

作者： J. Reece Roth and Z. y Chen (Plasma Sciences Laboratory, Department of Electrical and Computer Engineering, University of Tennessee, Knoxville, TN 37996-2100, USA) Peter P.- y tsai (Textiles and Nonwovens Development Center (TANDEC), University of Tenness Plasma Sci. Lab. Dept. of Elect. and Comp. Eng. Univ. of Tennessee Knoxville TN 37996-2100 United States

Direct exposure of samples to the active species of air generated by a One Atmosphere Uniform Glow Discharge Plasma (OAUGDP) has been used to etch and to increase the surface energy of metallic surfaces, photoresist, polymer films, and nonwoven fab- rics. The OAUGDP is a non-thermal plasma with the classical characteristics of a DC normal glow discharge that operates in air (and other gases) at atmospheric pres- sure. Neither a vacuum system nor batch processing is necessary. A wide range of applications to metals, photoresist, films, fabrics, and polymeric webs can be accom- modated by direct exposure of the workpiece to the plasma in parallel-plate reactors. This technolopy is simple, it produces effects that can be obtained in no other way at one atmosphere; it generates minimal pollutants or unwanted by-products; and it is suitable for individual sample or online treatment of metallic surfaces, wafers, films, and fabrics. Early exposures of solid materials to the OAUGDP required minutes to produce rela- tively small increases of surface energy. These durations appeared too long for com- mercial application to fast-moving webs. Recent improvements in OAUGDP gas com- position, power density, plasma quality, recireulating gas flow, and impedance match- ing of the power supply to the parallel plate plasma reactor have made it possible to raise the surface energy of a variety of polymeric webs (PP, PET PE etc.) to levels of 60 to 70 dynes/cm with one second of exposure. In air plasmas, the high surface ener- gies are not durable, and fall to 50 dynes/cm after periods of weeks to months. Here, we report the exposure of metallic surfaces, photoresist, polymeric films, and nonwo- ven fabrics made of PP and PET to an impedance matched parallel plate OAUGDP for durations ranging from one second to several tens of seconds. Data will be re- ported on the surface energy, wettability, wickability, and aging effect of polymeric films and fabrics as functions of time of exposur

关键词： atmosphere glow discharge plasma surface energy etching of material surface

Parameter Estimations for Generalized RayleighDistribution under Progressively Type-I IntervalCensored Data

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Open Journal of Statistics 2011年第2期1卷 46-57页

作者： y. L. Lio Ding-Geng Chen Tzong-Ru tsai 不详

In this paper, inference on parameter estimation of the generalized Rayleigh distribution are investigated for progressively type-I interval censored samples. The estimators of distribution parameters via maximum likelihood, moment method and probability plot are derived, and their performance are compared based on simulation results in terms of the mean squared error and bias. A case application of plasma cell myeloma data is used for illustrating the proposed estimation methods.

关键词： Maximum Likelihood Estimate Method of Moments EM Algorithm Type-I Interval Censoring

Sex Hormone-binding Globulin,Cardiometabolic Biomarkers,and Gestational Diabetes:A Longitudinal Study and Meta-analysis

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Maternal-Fetal Medicine 2020年第1期2卷 2-9页

作者： Meng-ying Li Shristi Rawal Stefanie N.Hinkle ye-yi Zhu Fasil Tekola-Ayele Michael y.tsai Si-Min Liu Cui-Lin Zhang Epidemiology Branch Division of Intramural Population Health ResearchEunice Kennedy Shriver National Institute of Child Health and Human DevelopmentBethesda MD 20817USA Department of Nutritional Sciences School of Health ProfessionsRutgers UniversityNewark NJ 07107USA Division of Research Kaiser Permanente Northern CaliforniaOakland CA 94612USA Department of Laboratory Medicine and Pathology University of Minnesota Medical SchoolMinneapolis MN 55455USA Department of Epidemiology Brown University School of Public HealthProvidence RI 02912USA Department of Endocrinology Guangdong General Hospital and Guangdong Academy of Medical SciencesGuangdong 510080China

Objective::This study investigated the prospective associations of circulating levels of sex hormone-binding globulin(SHBG)levels with cardiometabolic biomarkers and risk of gestational diabetes(GDM)during *** also examines the longitudinal trajectory of SHBG in women with and without ***::We conducted a nested case-control study of 107 incident GDM cases and 214 matched controls within the Eunice Kennedy Shriver National Institute of Child Health and Human Development Fetal Growth Studies-Singleton *** cohort enrolled non-obese and obese women aged 18-40 years with a singleton pregnancy between 8 and 13 weeks of gestation from 2009 to *** was ascertained via medical records *** samples were drawn four times at gestational weeks 10-14,15-26,23-31,and *** prospective associations between SHBG levels and cardiometabolic biomarkers were examined using the Spearman partial correlation among the *** longitudinal trajectories of SHBG levels were examined among the cases and the ***-analysis of prospective studies were performed to examine the association between SHBG levels and GDM ***::SHBG levels at gestational weeks 10-14 were significantly inversely associated with fasting insulin(r=-0.17,P=0.01)and insulin resistance as measured by HOMA-IR(r=-0.17,P=0.01)at gestational week *** at gestational weeks 10-14 and 15-26 was lower in cases than controls(mean±standard deviation:(204.0±97.6)vs.(220.9±102.5)nmol/L,P=0.16 and(305.6±124.3)vs.(322.7±105.1)nmol/L,P=0.14,respectively),yet the differences were not *** the meta-analysis,SHBG was 41.5 nmol/L(95%confidence interval:23.9,59.1,Py lower among women with GDM than without,and each 50 nmol/L increase in SHBG was significantly associated with an odds ratio of 0.85(95%confidence interval:0.76-0.95,P=0.01)for ***::Lower SHBG levels in early pregnancy were prospectively associated with higher high insulin levels

关键词： Diabetes,gestational Sex binding hormones Cardiometabolic risk markers Cohort analysis Longitudinal measurement Meta-analysis