Editor’s note

It is a great honor to present this Special Topic of Chinese Science Bulletin on high-speed optoelectronic devices and technologies. High-speed optoelectronics is a rapid developing technology dealing with a wide range of disciplines and technologies, such as material sciences, photonics and microelectronics.     

Giant homopolymers with amphiphilicity

A novel class of amphiphilic dendronized homopolymers has been reported by The Department of Polymer Materials, Shanghai University. By tuning the structures, these polymers can show thermoresponsive properties and adopt ordered secondary structures or self-assemble into ordered porous films. The study is reported in Issue 12 (December 2010) of SCIENCE CHINA Chemistry because of its significant     

Recent advance in detonation theory

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Recent advance in detonation theory     

The influence of estrogen on female mood changes

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The influence of estrogen on female mood changes     

Study of flow induced by winding-shaped plasma actuators

How to improve the performance of the plasma actuators is a problem that is of great interest to many scientific researchers in the field of electrohydrodynamics.Professor WANG LianZe and his group from the School of Aerospace,Tsinghua University,set out to investigate     

Learning from nature: Fabrication of colloidal PCs with controllable wettability

Colloidal photonic crystals (PCs) with desired wettabilities are of particular importance in various applications. Inspired by biological PCs, such as those of butterfly wings and peacock feathers, which all have evolved to have specific wettability, Professor Song Yanlin and his group in the Laboratory of New Materials, Institute of Chemistry, Chinese Academy of Sciences developed unique approaches to engineer colloidal PCs with desired wettability, based on the well-designed building blocks of latex particles. The range of wettability of these col- loidal PC films could be tailored from superhydrophobicity to superhydrophilicity and even superoleophobicity, by varying the surface     

The structure-based design of zinc finger nucleases can facilitate genomic editing

A recent study of significant research value carried out at the State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou,     

New discoveries on the state of hemoglobin in living red blood cells

Professor Qin Wenbin from BaoTou Medical College first identified the hemoglobin(Hb)A2phenomenon 30 years ago.His first paper onthis phenomenon was published in Acta Biochimica et Biophysica Sinica,in Chinese,in1981.Subsequent research investigating its mecha-nism was published in Chinese in the Chinese Biochemical Journal and Progress Biochimica     

Graptolite fauna indicates the beginning of the Kwangsian Orogeny

A research at the State Key Laboratory of Palaeobiology and Stratigraphy,Nanjing Institute of Geology and Palaeontology,has shown,based on a refined division and correlation of the graptolite-bearing strata in southern Jiangxi,China,that the Kwangsian Orogeny commenced in the early Katian Age of the Late Ordovician. Because of its significant research value,this study is published in Volume 53,Issue 11 of SCIENCE CHINA Earth Sciences.     

Mn-doped ZnS is unsuitable to act as a dilute magnetic semiconductor

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Mn-doped ZnS is unsuitable to act as a dilute magnetic semiconductor     

A note from the editorial office

As we begin the year 2011, we first would like to thank all of our editorial board members, reviewers, authors, readers and collaborators for their great support     

A solidification mechanism transition of ternary Fe-Cu-Sn alloy induced by substantially undercooled state

Peritectic reaction is seriously limited by solute diffusion, it can rarely be completed during practical materials processing.One side, the grain refinement of primary phase dendrites resulting from high undercooling condition facilitates the completion of peritectic transformation. Otherwise, those peritectic alloys with positive mixing enthalpy usually display metastable     

Cooperative communications when collaborators are not synchronized

A basic challenge for future wireless communication systems is the contradiction between the fast growing demand for high speed wireless communications and the limited electromagnetic wave frequency spectrum. The multiple-input multiple-output (MIMO) technique with space-time coding (STC) is recognized as a promising scheme for the next-generation of high speed wireless communication systems. This is mainly because of its capability of providing spatial diversity to combat fading in wireless channels and increasing the capacity without     

Effervescent atomization spray: Understanding the modeling process

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Effervescent atomization spray: Understanding the modeling process     

Discovery of primary exhalative hydrothermal dolostone in the Santanghu area,Xinjiang, NW China

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Discovery of primary exhalative hydrothermal dolostone in the Santanghu area, Xinjiang, NW China     

A new year message from Chinese Science Bulletin

The year 2009 is the 60th anniversary of the founding of the People’s Republic of China, and it is also the 60th founding anniversary of the Chinese Academy of Sciences (CAS). In the magnificent 60 years of development, sci-     

An important aspect of structural design of super-tall buildings and structures: Across-wind loads and effects

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An important aspect of structural design of super-tall buildings and structures: Across-wind loads and effects     

Extended coulomb failure criteria for the zipingpu reservoir and longmenshan slip investigated by researchers at the Chinese Academy of Sciences

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Extended coulomb failure criteria for the zipingpu reservoir and longmenshan slip investigated by researchers at the Chinese Academy of Sciences     

Amorphous alloys——A kind of promising high-performance materials

Amorphous alloys, relatively recent metallic materials, exhibit many excellent properties because of their unique structure. They have attracted tremendous attention from both scientists and engineers since their initial discovery 50 years ago. In the early stages, scientists focused on developing new alloy systems with good amorphous structure forming ability and to un-     

Endophenotype strategies for the study of neuropsychiatric disorders: A quest

The identification of genes that contribute to the susceptibilities to complex neuropsychiatric disorders such as schizophrenia, major depression and bipolar disorders has not been as successful using conventional genetic approaches as had been hoped. There are several problems associated with the conventional approaches, including the validity of psychiatric diagnosis itself, excluding carriers of relevant genes who cannot be identified in the absence of manifest symptoms, and the heterogeneity of