◇◇新语丝(www.xys.org)(xys.dxiong.com)(xys.3322.org)(xys.xlogit.com)◇◇ 中科院上海硅所“百人计划”李效民课题组如此盛产文章 作者:cat 上海硅所一直是我很欣赏的科研单位,没有想到现在也会有人如此大胆地制造文章?互 相攀比?难道中国不断出现的学术丑闻开始刮进中国科技的堡垒(中科院)。令我失望 和非常的沮丧。象一块石头卡在自己喉咙,不吐不快。 要说前不久浙江宁波大学的“郑岳青”是发了很多被所谓大垃圾文章,我想他们还是 “小巫”,毕竟他们还不敢一稿多投,而发表的至少是他们获得的原始数据。比起当今 所流行的“郑岳青现象”,中科院硅酸盐所百人计划的李效民课题组才是“大巫”,如 此胆大包天的重复发表相同的结果,真是不可思议。况且,在发表文章的时候都会填写 了corpright,也就是说所发表的文章的版权归出版商所有。没有得到允许,随意重复发 表相同的结果是违法的。还有,我们在投稿的时候,都有一条,必须要保证文章没有一 稿多投。作者必须要讲究诚信。 -------------------------------------------------------- A文: Weidong Yu, Xiaomin Li, Xiangdong Gao, and Feng Wu, J. Phy. Chem. B, 2005, 109, 17078."Large-Scale Synthesis and Microstructure of SnO2 Nanowires Coated with Quantum-Sized ZnO Nanocrystals on a Mesh Substrate" Abstract. Large-quantity single-crystal SnO2 nanowires coated with quantum-sized ZnO nanocrystals (nc-ZnO/SnO2 nanowires) were directly synthesized by thermal evaporation of SnO powder and a mixture of basic ZnCO3 and graphite powders. A common stainless steel mesh was used to collect the products. The microstructure and possible growth mechanism of the nc-ZnO/SnO2 nanowires were investigated. Results showed that tetragonal structured SnO2 nanowires were obtained, whose surfaces were coated with single-layer ZnO nanocrystals with an average diameter of less than 5 nm. The nanowires had cross-rectangle section with width-to-thickness aspect ratio ranging from 2:1 to 5:1. The lengths of the nanowires were several tens of micrometers. ZnO nanocrystals were single crystalline wurtzite structures, which coated the whole nanowires and distributed uniformly. The possible growth mechanism of the composite nanowires may be enucleated that Zn atoms in the source vapor will replace the Sn atoms on the surface of the formed SnO2 nanowires due to the higher reducibility of Zn than Sn. Two strong Raman scattering peaks at 626 and 656 cm-1 appeared in the micro-Raman spectrum of nc-ZnO/SnO2 nanowires. The origins of the peaks were discussed. Most importantly, the method can be extended to other composite oxide nanowires that are synthesized by oxidizing two kinds of metals, such as high reducibility elements Mg, Al, Zn, and Ti, and low reducibility elements In,Ge, Ga, etc. Received: May 23, 2005, In Final Form: July 17, 2005 ------------------------------------ B文: W D Yu, X M Li and X D Gao, Nanotechnology, 2005, 16, 2770. "Microstructure and photoluminescence properties of bulk-quantity SnO2 nanowires coated with ZnO nanocrystals" Abstract. Large-quantity single-crystal SnO2 nanowires coated with ZnO nanocrystals (nc-ZnO/SnO2 nanowires) were directly synthesized by a one-step thermal evaporation process. SnO2 nanowires were single-crystalline tetragonal structures with the diameters and lengths of 50–100 nm and several tens of micrometres, respectively. ZnO nanocrystals were single-crystalline wurtzite structures with average diameters less than 5 nm, which coated the whole SnO2 nanowires uniformly. Photoluminescence measurements showed that the nc-ZnO/SnO2 nanowires had a much stronger near-band UV emission (at 393 nm) than pure SnO2 nanowires. The Sn doping into ZnO nanocrystals may be a most possible reason for the redshift and broadening of UV emission peaks from nc-ZnO/SnO2 nanowires. The microstructure and photoluminescence properties of the nc-ZnO/SnO2 nanowires are discussed. Received 1 June 2005, in final form 16 August 2005 Published 11 October 2005 ----------------------------------- 1. 看投稿日期:May 23 (A), June 1 (B). 相差正好一周。同一时期投出,便于欺骗 主编和审稿人! 2. 题目关键词很有意思:“Synthesis and Microstructure"(A) "Microstructure and photoluminescence properties" (B)  A文中,有合成,结构表征,拉曼散射。   B文中,有合成(实验部分整段与A文中的基本一样),同样有结构(XRD,TEM), 只 是用光致发光谱替代拉曼光谱。 3. 摘要,前言,实验过程,文章主体,结论。大片的整段地照抄。 4. Figures: Fig.1a in (A) = Fig.1a (B) Fig.1b in (A) = Fig.1b (B) Inset of Fig.1c in (A) = Inset of Fig.1d in (B) Fig.2d in (A) = Fig.2e in (B) Fig.2e in (A) = Fig.2f in (B) Inset of Fig.2f = Fig.2c in (B) 5.纵观全文,可以说是95%雷同一点不为过,只是作者把A文中的Raman spectra 换成了 B文中的PL spectra. 我们知道,虽然Raman 光谱与PL光谱的原理上不同,但是测试方 法非常的相似。其实,有很多人都是在拉曼光谱仪器上进行改装就可以测定PL光谱(换 一下激发源)。 (XYS20051203) ◇◇新语丝(www.xys.org)(xys.dxiong.com)(xys.3322.org)(xys.xlogit.com)◇◇