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Novel two-dimensional transition metal chalcogenides created by epitaxial growth

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Science China(Physics,Mechanics & Astronomy) 2021年第10期64卷 23-37页

作者： hong-liang lu Yu-Yang Zhang Xiao Lin hong-Jun Gao Institute of Physics and University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100190China CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China

Two-dimensional(2D) materials have been a very important field in condensed matter physics, materials science, chemistry, and electronics. In a variety of 2D materials, transition metal chalcogenides are of particular interest due to their unique structures and rich properties. In this review, we introduce a series of 2D transition metal chalcogenides prepared by epitaxial growth. We show that not only 2D transition metal dichalcogenides can be grown, but also the transition metal chalcogenides that do not have bulk counterparts, and even patterned transition metal chalcogenides can be fabricated. We discuss the formation mechanisms of the novel structures, their interesting properties, and potential applications of these 2D transition metal chalcogenides. Finally, we give a summary and some perspectives on future studies.

关键词： 2D materials transition metal chalcogenides epitaxial growth

On Edge Connectivity and Parity Factor

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Acta Mathematica Sinica,English Series 2015年第5期31卷 772-776页

作者： hong liang lu Wei WANG Yuqing LIN School of Mathematics and Statistic Xi'an Jiaotong University School of Electrical Engineering and Computer Science The University of Newcastle

By Petersen＇s Theorem, a bridgeless cubic graph has a 2-factor. Fleischner （Discrete Math., 101, 33-37 （1992）） has extended this result to bridgeless graphs of minimum degree at least three by showing that every such graph has an even factor without isolated vertices. Let me〉 0 be even and mo〉 0 be odd. In this paper, we prove that every me-edge-connected graph with minimum degree at least me ＋ 1 contains an even factor with minimum degree at least me and every （mo ＋ 1）- edge-connected graph contains an odd factor with minimum degree at least too, which further extends Fleischner＇s result. Moreover, we show that our results are best possible.

关键词： Edge connectivity parity factor

Contributions of source population and incubation temperature to phenotypic variation of hatchling Chinese skinks

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Current Zoology 2021年第3期67卷 245-253页

作者： hong-liang lu Yan-Fu Qu hong Li Xiang Ji Hangzhou Key Laboratory for Animal Adaptation and Evolution College of Life and Environmental SciencesHangzhou Normal UniversityHangzhou 311121ZhejiangChina Jiangsu Key Laboratory for Biodiversity and Biotechnology College of Life SciencesNanjing Normal UniversityNanjing 210023JiangsuChina College of Life and Environmental Sciences Wenzhou UniversityWenzhou 325035ZhejiangChina

Phenotypic plasticity and local adaptation are viewed as the main factors that result in between-population variation in phenotypic traits,but contributions of these factors to phenotypic variation vary between traits and between species and have only been explored in a few species of ***,we incubated eggs of the Chinese skink(Plestiodon chinensis)from 7 geographically separated populations in Southeast China at 3 constant temperatures(24,28,and 32℃)to evaluate the combined effects of dutch origin,source population,and incubation temperature on hatchling *** relative importance of these factors varied between *** all examined hatchling traits,including body mass,snout-vent length(SVL),tail length,head size,limb length,tympanum diameter,and locomotor speed,varied among populations and were affected by incubation *** for hatchling size(body mass and SVL)varied considerably among *** population explained much of the variation in hatchling body mass,whereas incubation temperature explained much of the variation in other examined *** results indicate that between-population variation in hatchling traits of *** likely reflects the difference in natural incubation conditions and genetic divergence.

关键词： egg incubation hatchling phenotype incubation temperature local adaptation Plestiodon chinensis source population

Integration Technology of Micro-LED for Next-Generation Display

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Research 2023年第2期2023卷 389-413页

作者： Dingbo Chen Yu-Chang Chen Guang Zeng David WeiZhang hong-liang lu State Key Laboratory of ASIC and System Shanghai lnstitute of Inteligent Electronics&SystemsSchoolof MicroelectronicsFudan UniversityShanghai 200433China Jia Shan Fudan Institute jaxingZhejang Province 314100China Key Laboratory of Specialty Fiber Optics and Optical Access Networks Shanghai Institute Communication and Data ScienceShanghai UniversityShanghai 200444China

Inorganic micro light-emitting diodes(micro-LEDs)based on II-V compound semiconductors have been widely studied for self-emissive *** chips to applications,integration technology plays an indispensable role in micro-L... 详细信息

关键词： LED diodes LEDs

Sexual size monomorphism may evolve in lizards with a body size maximizing reproductive performance for both sexes

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Current Zoology 2023年第3期69卷 277-283页

作者： hong-liang lu Jian-Fang Gao Kun Guo Xiang Ji Hangzhou Key Laboratory for Ecosystem Protection and Restoration School of Life and Environmental SciencesHangzhou Normal UniversityHangzhou 311121ZhejiangChina Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection College of Life and Environmental SciencesWenzhou UniversityWenzhou 325035ZhejiangChina

We used Takydromus septentrionalis,a sexually size-monomorphic lacertid lizard,as a model system to test the hypothesis that sexual size monomorphism may evolve in lizards where reproductive performance is maximized at a similar body size for both *** allowed lizards housed in laboratory enclosures to lay as many clutches(for females)as they could or to mate as many times(for males)as they could in a breeding ***-assortative mating was weak but evident in ***,as revealed by the fact that male and female snout–vent lengths(SVLs)in mating pairs were significantly and positively *** frequency(indicative of male reproductive performance)varied from 1 to 8 per breeding season,generally increasing as SVL increased in adult males smaller than 67.4 mm *** frequency varied from 1 to 7 per breeding season,with female reproductive performance(determined by clutch frequency,annual fecundity,and annual reproductive output)maximized in females with a SVL of 68.0 *** to our hypothesis,the reproductive performance was maximized in the intermediate sized rather than the largest individuals in both sexes,and the body size maximizing reproductive performance was similar for both *** work could usefully investigate other lineages of lizards with sexually monomorphic species in a phylogenetic context to corroborate the hypothesis of this study.

关键词： annual fecundity annual reproductive output clutch frequency mating frequency Takydromus septentrionalis

Recent Progress on Flexible Room-Temperature Gas Sensors Based on Metal Oxide Semiconductor

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Nano-Micro Letters 2022年第12期14卷 310-351页

作者： Lang-Xi Ou Meng-Yang Liu Li-Yuan Zhu David Wei Zhang hong-liang lu State Key Laboratory of ASIC and System Shanghai Institute of Intelligent Electronics&SystemsSchool of MicroelectronicsFudan UniversityShanghai 200433People’s Republic of China Yiwu Research Institute of Fudan University Chengbei RoadYiwu City 322000ZhejiangPeople’s Republic of China

With the rapid development of the Internet of Things,there is a great demand for portable gas *** oxide semiconductors(MOS)are one of the most traditional and well-studied gas sensing materials and have been widely used to prepare various commercial gas ***,it is limited by high operating *** current research works are directed towards fabricating high-performance flexible room-temperature(FRT)gas sensors,which are effective in simplifying the structure of MOS-based sensors,reducing power consumption,and expanding the application of portable *** article presents the recent research progress of MOS-based FRT gas sensors in terms of sensing mechanism,performance,flexibility characteristics,and *** review comprehensively summarizes and discusses five types of MOS-based FRT gas sensors,including pristine MOS,noble metal nanoparticles modified MOS,organic polymers modified MOS,carbon-based materials(carbon nanotubes and graphene derivatives)modified MOS,and two-dimensional transition metal dichalcogenides materials modified *** effect of light-illuminated to improve gas sensing performance is further ***,the applications and future perspectives of FRT gas sensors are also discussed.

关键词： Metal oxide semiconductor Flexible gas sensor Room temperature Nanomaterials

A Note on the Strong Edge-coloring of Outerplanar Graphs with Maximum Degree 3

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Acta Mathematicae Applicatae Sinica 2016年第4期32卷 883-890页

作者： Shun-yi LIU He-ping ZHANG hong-liang lu Yu-qing LIN School of Mathematics and Statistics Lanzhou University College of Science Chang’an University School of Mathematics and Statistics Xi’an Jiaotong University School of Electrical Engineering and Computer Science The University of Newcastle

A strong k-edge-coloring of a graph G is an assignment of k colors to the edges of G in such a way that any two edges meeting at a common vertex, or being adjacent to the same edge of G, axe assigned different colors. The strong chromatic index of G is the smallest integer k for which G has a strong k-edge-coloring. In this paper, we have shown that the strong chromatic index is no larger than 6 for outerplanax graphs with maximum degree 3.

关键词： strong edge-coloring strong chromatic index outerplanar graphs

New Improvements on Connectivity of Cages

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Acta Mathematica Sinica,English Series 2011年第6期27卷 1163-1172页

作者： hong liang lu Yun Jian WU Qing Lin YU Yu Qing LIN Department of Mathematics Xi'an Jiaotong University Xi'an 710049 P. R. China Department of Mathematics Southeast University Nanjing 211189 P. R. China Department of Mathematics and Statistics Thompson Rivers University Kamloops V2C 5N3 BC Canada School of Electrical Engineering and Computer Science The University of Newcastle Newcastle NSW 2308 Australia

A （δ, g）-cage is a δ-regular graph with girth g and with the least possible number of vertices. In this paper, we show that all （δ, g）-cages with odd girth g ≥ 9 are r-connected, where （r - 1）2 ≤δ ＋ x/δ - 2 〈 r2 and all （δ, g）-cages with even girth g 〉 10 are r-connected, where r is the largest integer satisfying r（r-1）2/4 ＋ 1 ＋ 2r（r - 1） ≤δ. These results support a conjecture of Fkl, Huang and Rodger that all （δ, g）-cages are 6-connected.

关键词： Cage girth superconnectivity

Effect of thermal acclimation on thermal preference, resistance and locomotor performance of hatchling soft-shelled turtle

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Current Zoology 2013年第6期59卷 718-724页

作者： Mei-Xian WU Ling-Jun HU Wei DANG hong-liang lu Wei-Guo DU Hangzhou Key Laboratory for Animal Adaptation and Evolution School of Life and Environmental Sciences HangzhouNormal University Hangzhou 310036 China Xiaoshan College of Science and Technology Zhejiang Ocean University Hangzhou 311258 China Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology Chinese Academy of Sciences Beijing100101 China

The significant influence of thermal acclimation on physiological and behavioral performance has been documented in many ectothermic animals, but such studies are still limited in turtle species. We acclimated hatchling soft-shelled turtles Pelodiscus sinensis under three thermal conditions （10, 20 and 30~C） for 4 weeks, and then measured selected body temperature （Tsel）, critical thermal minimum （CTMin） and maximum （CTM^x）, and locomotor performance at different body temperatures. Thermal acclimation significantly affected thermal preference and resistance of P sinensis hatchlings. Hatchling turtles accli- mated to 10~C selected relatively lower body temperatures and were less resistant to high temperatures than those acclimated to 20~C and 30~C. The turtles＇ resistance to low temperatures increased with a decreasing acclimation temperature. The thermal re- sistance range （i.e. the difference between CTM^x and CTMin, TRR） was widest in turtles acclimated to 20~C, and narrowest in those acclimated to 10~C. The locomotor performance of turtles was affected by both body temperature and acclimation tem- perature. Hatchling turtles acclimated to relatively higher temperatures swam faster than did those acclimated to lower temperatures. Accordingly, hatchling turtles acclimated to a particular temperature may not enhance the performance at that temperature. Instead, hatchlings acclimated to relatively warm temperatures have a better performance, supporting the ＂hotter is better＂ hypothesis.

关键词： Pelodiscus sinensis Thermal acclimation Thermal resistance Locomotor performance