Comparative orotomy of the Archean Superior and Phanerozoic Altaid orogenic systems

We compare and contrast the materials and mechanisms of continental crustal growth in the largest preserved regions of Phanerozoic and Archean juvenile additions to the crust,to test for similarities or differences in the formation of continents through time.We accomplish this through a comparison of map patterns,lithological contents,and structural and metamorphic evolution of the Phanerozoic Altaid orogenic system of Asia,with the Archean Superior Province of the North American Craton,using a ...     

A recipe for growing Escherian crystals

Architectural control of nanoparticles with welldefined shapes and the alignment of nanobuilding blocks into ordered superstructures have become the key issues in materials chemistry and nanotechnology since recent years, and copper monosulfide, as one of the important semiconductor transition-metal chalcogenides, has gained more and more attention in materials science due to its excellent optical, and electronic properties.     

Prof. Qiu Jianrong Honored with Otto-Schott Prize

Together with two Japanese researchers,Prof.Qiu Jianrong of the CAS Shanghai Institute of Optics and Fine Mechanics recently received the Otto-Schott Award. The awardees were selected for “their outstanding research achievements in the area of optical materials, especially for their pioneering work on femtosecond laserinduced microfeatures in glasses and the application of such novel materials to achieve new functionalities.”     

New Method to Modulate Surface Properties of Black Phosphorus

正Among various types of 2D materials,black phosphorus(BP)is a shining star thanks to its distinctive properties such as the layerdependent band gap,active surface electronic states,good biocompatibility and excellent photothermal properties.However,due to the lone-pair electrons,BP is not stable in oxygen-water ambient condition.Besides,phosphorus is present in cells,tissues and bones,which makes it difficult to     

Ultra-fast X-ray Lasers Illuminate Elusive Atomic Spins

正A quick flash of light can make ordinary materials extraordinary,potentially inducing qualities such as the perfect efficiency of superconductivity even at room temperature.These subatomic transformations,however,are infamously fleeting–they vanish in just trillionths of a second.Subsequently,how to measure and characterize the manifested properties in     

Fundamental Research and Application Exploration of Optoelectronic Materials and Nanocomposite Materials of Rare Earth

This project is set in one of the international frontier research fields in inorganic solid chemistry.At present, the research in organic/inorganic hybrid materials and nanocomposite optoelectronic functional materials is under the spotlight in the realm of materials science; there remain quite a few difficulties hiding in the traditional synthesis methods.For instance, the reaction cycle is generally too long, rare earth luminescence components are covalently grafted onto the matrix network, and the stability and luminescence properties are quite poor.Hence, Prof.Zhang and his colleagues proposed a series of new methods and technologies through systematic studies to prepare organic/inorganic hybrid materials and nanocomposite optoelectronic functional materials, striving to solve those kinds of problems.Through many years' efforts, a scientific basis was established by the scientists for the design and performance of the materials, which is recognized of great practical significance.     

Piezotronics and piezo-phototronics: fundamentals and applications

Technology advancement that can provide new solutions and enable augmented capabilities to complementary metal–oxide–semiconductor(CMOS)-based technology,such as active and adaptive interaction between machine and human/ambient,is highly desired.Piezotronic nanodevices and integrated systems exhibit potential in achieving these application goals.Utilizing the gating efect of piezopotential over carrier behaviors in piezoelectric semiconductor materials under externally applied deformation,the piezoelectric and semiconducting properties together with optoelectronic excitation processes can be coupled in these materials for the investigation of novel fundamental physics and the implementation of unprecedented applications.Piezopotential is created by the strain-induced ionic polarization in the piezoelectric semiconducting crystal.Piezotronics deal with the devices fabricated using the piezopotential as a‘gate’voltage to tune/control charge-carrier transport across the metal–semiconductor contact or the p–n junction.Piezo-phototronics is to use the piezopotential for controlling the carrier generation,transport,separation and/or recombination for improving the performance of optoelectronic devices.his review intends to provide an overview of the rapid progress in the emerging ields of piezotronics and piezo-phototronics.he concepts and results presented in this review show promises for implementing novel nano-electromechanical devices and integrating with micro/nano-electromechanical system technology to achieve augmented functionalities to the state-of-the-art CMOS technology that may ind applications in the human–machine interfacing,active lexible/stretchable electronics,sensing,energy harvesting,biomedical diagnosis/therapy,and prosthetics.     

Functional Inorganic Materials with Complex Form: Construction, Self-assembly Principles and Property

There is a rich and long history of gaining inspiration from the nature for the design of practical materials and systems.Biominerals are well-known composites of inorganic and organic materials in the form of fascinating shapes and highly ordered structures existing in the natural world, such as pearl, oyster shells, corals, ivory, sea urchin spines, cuttlefish bone, limpet teeth, magnetic crystals in bacteria and human bones that are created by living organisms.During the past few decades, it has become one of the most influencing subjects in materials proteins, which involve in all the processes of multicell organisms, such as fertilization, differentiation, development, immunity, infection, and cancer.chemistry to explore new bio-inspired strategies for selfassembling or surface-assembling molecules or colloids to generate materials with controlled morphologies,     

Quantitative Measurement of the Intrinsic Electric Fields in Ionic Liquids Using VSE Spectroscopy and MD Simulation

Owing to their unique properties,ionic liquids(ILs)nowadays are very fascinating in various fields,including organic synthesis,catalysis,inorganic chemistry,electrochemistry,and materials.The determination of the strength of the intrinsic electric fields in ILs is of fundamental importance to the understanding of the properties of ILs and their applications.Unfortunately,until now the intrinsic electric fields in ILs have remained poorly understood,and their identification and quantification are very challenging.Researchers at R&D Center for Green Chemistry and Catalysis,CAS Lanzhou     

China starts largest ever paleoanthropology project

China is believed to be a country especially endowed with the fossils and materials related to early human evolution, next only to the African continent in terms of fecundity and systematism. These materials, including physical and cultural remains of huminids, their associated fauna and flora as well as prehistoric sites, are essential for probing the human origin and evolution. Yet, experts say that the studies of these fossils and artefacts are far from being adequate and perfect in China because they have been plagued by many weak points.     

CAS Convenes 17~(th) General Assembly in Beijing

<正>The 17th General Assembly of the Members of the Chinese Academy of Sciences was convened from June 9 to13,2014 in Beijing.572 Members and 16 Foreign Members of CAS participated in the conference.On June 9,Chinese President XI Jinping addressed the assembly’s opening at the Great Hall of the People and urged independent innovation in science and technology in China."We should follow the strategy of innovation as an impetus for development.Independent innovation should be the essence of this strategy,and the most urgent thing to do is to eliminate the system and mechanism obstacles to free up the huge potentials of science and technology as the primary force of productivity,"he said."We shall not dress up our tomorrow in other peoples’     

UV Raman Spectroscopic Studies on Catalytic Materials

Due to their excellent work on UV Raman spectroscopic studies on catalytic materials, a team of scientists led by CAS Member Prof. LICan at the Dalian Institute of Chemical Physics （DICP）, CAS were awarded with a Second-Prize from the 2011 State natural Science Award. The team has long devoted themselves to the research on catalytic materials, and has helped solve some long-standing difficulties in this field, including the characterization of catalyst activity and studies into synthesis mechanisms of catalytic materials.     

Promote Green Building, Facilitate Energy Effi ciency and Emissions Reduction, and Improve Habitat Environment

Green building here refers to the practice of creating structures able to best achieve effi cient and environmentally friendly use of resources (energy, land, water, materials) throughout the life-cycle so as to offer healthy, convenient and pleasant buildings for people to live and work in in harmony with nature. It has become a worldwide trend in the development of the     

Striving toward a More ＂Precise＂ Chemistry

On multiple temporal and spatial scales, chemistry explores the composition, structure and form of matter, its physical properties and biological activity as well as the chemical changes and synthesis reactions, striving to describe the colorful world of matter and reveal the molecular secrets of matter transformations and life processes using its theories and its unique language.As a fundamental and creative discipline of science, chemistry not only helps us to understand the nature of substances and make high-performing materials to serve economic development, but is distinctively characterized by the ability to invent novel and marvelous matters.     

China＇s Industrial Biomanufacturing Technology to Reach World Advanced Level

<正>1.Industrial biomanufacturing is an important part of bioeconomy development Biomanufacturing is a new industry for large-scale material processing and transformation via biological function to provide industrial goods for social development.It uses microbial cells or enzyme proteins to catalyze chemical synthesis and biomass feedstock to synthesize energy chemicals and materials in order to produce energy and chemicals as a replacement for the petrochemical industry route[1].Based on the latest development in life sciences,it mass-produces the needed energy and chemicals in an advanced,highly efficient and environmentallyfriendly way through the combination of biological and manufacturing technologies,with design and improvement of modifi ed organisms as the core.Currently,through the advanced biomanufacturing process,many materials can be produced such as basic     

ZrB_(12) Discovered as a “Metallic Diamond”

正Hard and superhard materials have brought substantial interest because of their wide technological applications in industry and the fundamental importance in condensed-matter physics.In conventional design of superhard materials such as diamond and cubic boron nitride,the pure covalent bonding network based on B-C-N-O systems is believed to provide both the low elastic compressibility and the     

Chemistry: A Science of Discovery and Creation

This article draws inspiration from the development of chemical science over the past 100 years,as well as its contributions to the advancement of other scientific disciplines and human civilization. It also highlights the rapid growth of chemistry in China and makes suggestions on its future development in the new era facing the challenges of energy,resources,materials and the environment.     

Role of Tet family dioxygenase in mammalian epigenetic regulation

The development and growth of organisms, as well as the occurrence of diseases are widely subject to epigenetic regulation. Active DNA demethylation occurring in the epigenetic reprogramming process plays an important role in the development of early embryos and the generation of germ cells, hence attracting keen attention from scientists. However, the biological significance and mechanisms of this epigenome remodelling have remained unclear.     

A New Green Anatase TiO2 Nanocrystals Synthesized

Titanium dioxide(TiO2),as one of the most promising semiconductor materials,has become a topic of intensive study due to its important applications in a broad range of fields.However,the physicochemical properties of TiO2largely depend on the exposed