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Online since: February 2014
Authors: Peder Bergman, Jawad Hassan, Pontus Stenberg, Erik Janzén, Seoyong Ha, Louise Lilja, Ickchan Kim, Heung Taek Bae, Ildiko Farkas, Jian Wu Sun, Olle Kordina
Janzén1,k 1Department of Physics, Chemistry and Biology, IFM 58183 Linköping university, Sweden 2Applied Materials Lab., Components R&D Center, LG Innotek Co., Ltd. 1271, Sa 3-dong, Sangrok-gu, Ansan-si, South Korea ajawul@ifm.liu.se, bposterity@lginnotek.com, clouca@ifm.liu.se, dildfa@ifm.liu.se, eickim@lginnotek.com, fponst@ifm.liu.se, gjiasu@ifm.liu.se, holkor@ifm.liu.se, ipeber@ifm.liu.se, jsyha930@lginnotek.com, kerj@ifm.liu.se Keywords: Fast epitaxial growth, high growth rate, chlorinated growth, atomic force microscopy Abstract.
The growth rate becomes even more critical in the case of epilayer structure for high power devices where a low doped and over 100 µm thick drift layer is required.
Additional advantage of chlorinated chemistry together with HCl over standard chemistry is found in the form of very low parasitic deposition of Si close to the upstream areas of the susceptor which makes the process highly stable, reproducible and significantly prolongs the lifetime of the susceptor.
Online since: May 2012
Authors: Jin Shui Wang, Li Zhang, Feng Jia, Liang Chen, Bing Jian Qi
In wheat there are at least six different ω-5 gliadin proteins; the primary structures of these is very similar but the contents vary according to growing districts or cultivated variety[12].
Dekio: Journal of Biological Chemistry Vol. 279 (2004), p. 12135 [9] H.
Kasarda: Cereal Chemistry Vol. 77 (2000), p. 607 [12] W.
Correia: Food chemistry Vol. 131 (2011), p. 1069 [27] S.
Online since: March 2020
Authors: Kwok Feng Chong, Nurul Huda Abu Bakar, Jamil Ismail
The additional advantage is somehow due to its amphiphilic structure, which consists of a hydrophobic, p-conjugated 2D carbon sheet that contains various hydrophilic oxygen functional groups [8].
[8] Dreyer, D.R., et al., The chemistry of graphene oxide.
The Journal of Physical Chemistry Letters, 2010. 1(8): p. 1259-1263
Journal of Materials Chemistry A, 2015. 3(32): p. 16843-16848.
Online since: July 2015
Authors: Ying Jie Cai, Zahid Latif, Fan Liu, Lin Wei He
Improvement of Light Fastness of Liyuan Blue FL-RN Reactive Dye ZAHID Latif1,a, Fan LIU1,b, Linwei HE1,c and Yingjie CAI2,d* 1School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China 2Engineering Research Center for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan 430073, China azahid.latif786@gmail.com, b837097057@qq.com, c928804616@qq.com, d*Corresponding author: yingjiecai@wtu.edu.cn Keywords: Dyeing, Cotton, Reactive Dye, Light Fastness, UV Absorber Abstract.
Other requirements are easy application condition and it should not cause any change in color after UV finish application[6, 7] Thiagarajan and Killi used UV absorbers and anti-Oxidants (Gallic acid, Vitamin C and Cafeic acid) to improve light fastness property of reactive dyes results shows improvement in light fastness in few commercial reactive dyes.[8] In this research Flourene base reactive dye Liyuan Blue FL-RN was applied, which is different in structure.
Freeman, Physico-chemical principle of colour chemistry, first ed., Blackie A&P, London, 1996
Beynon, Unimolecular ion decomposition, Annual Review of Physical Chemistry. 30 (1979) 51-78
Online since: May 2011
Authors: Jiu Li Liu, Li Jun Bai, Ping Qian, Yao Wen Hu
To illustrate more clearly, these two structures are shown in Fig. 2.
The cohesive energy per atom of AFexAl12-x with the orthorhombic YbFe2Al10-type structure and AFexAl12-x with the ThMn12-type structure is calculated and compared with each other.
Obviously, the average energy of AFe2Al10 with the YbFe2Al10-type structure is lower than that with the ThMn12-type structure.
The unit cell of UFe2Al10 with the YbFe2Al10-type structure (a).
Handbook on the physics and chemistry of rare earths.
Online since: September 2013
Authors: Jun Ye, Si Ting Su, Jian Xiong
Effect of Ball Milling on Structure of Microcrystalline Cellulose Si-ting Su 1, Jian Xiong 1,2, Jun Ye1,* 1 School of Light Chemistry and Food Science, South China University of Technology, Guangzhou 510640, China 2 State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China Corresponding author: jye@scut.edu.cn Keywords: Microcrystalline cellulose, Ball milling, Crystallinity Abstract.
The main objective of this work was investigate the effect of ball milling on microcrystalline cellulose (MCC) structure.
FTIR spectra is a useful technique to characterize the physico-chemical structures changes of polysaccharide during ball milling treatment.
After 30 h ball milling, the crystal structure transformed into celluloseⅡcellulose structures, indicated by the characteristic reflections at 2θ = 12.1, 19.8 and 22゜, the result is consistent with the published literatures[12,13].
Conclusion This paper reveals the effect of ball milling on MCC structure, morphology and properties.
Online since: September 2020
Authors: Yi Ting Kong, Kuan Yu Chen, Shyi Long Lee
Theoretical Studies of Au3+/0/- Clusters Using Density Funtional Theory Kuan-Yu Chen1,a, Yi-Ting Kong1,b and Shyi-Long Lee1,c* 1Department of Chemistry and Biochemistry, National Chung Cheng University Chia-Yi, Taiwan 62102 ad07001tw@gmail.com, bk2020350728@yahoo.com.tw, cchesll@ccu.edu.tw Keywords: Gold clusters, Lowest energy structures, DFT method Abstract.
The D3h structure possesses multiplicity 4 while the C2v structure 2.
Both bent structure and linear structure have same multiplicity 2.
Besides, D∞h structure possesses multiplicity 3 while the D3h structure 1.
The D3h structure possesses multiplicity 4 while the C2v structure 2.
Online since: March 2010
Authors: Yue Hui He, Xiao Hua Sun, Ping Feng, Guang Hong Ni, Yi Hua Sun
The invention of functionally graded structure cemented carbide is a significant revolution.
In this paper, graded structure cemented carbide with cubic carbide free layer (CCFL) was prepared.
Results and Discussion Microstructure and Compositional Depth Profiles Fig. 1 shows the microstructure of prepared graded structure cemented carbide.
Summary In this paper, graded structure cemented carbide with cubic carbide free layer was prepared.
Andrén: Materials Chemistry and Physics Vol. 67 (2001), p. 203 [9] Jiangao Yang, Haibing Wang, Yong Liu, Baiyun Huang, Wuzhuang Zhang: Journal of Central South University of Technology(Natural Science) Vol. 36(3)(2005), p.349 [10] Fisher, Hartzell and Akerman, U.
Online since: August 2013
Authors: Shi Xue Zhou, Wei Xian Ran, Qian Qian Zhang, Guo Qiang Chen, Ye Zhang, Zong Ying Han, Min Jian Yang, De Xi Wang
The crystal structure of magnesium hydride affects the properties of magnesium for hydrogen storage.
The HRTEM observation and XRD characterization showed that the Mg hydrided into nanocrystalline β-MgH2 of tetrahedral crystal structure and γ-MgH2 of orthorhombic crystal structure during milling under 1 MPa of hydrogen, and the γ-MgH2 increased with the extension of milling time.
Further hydrogenation produces MgH2 of tetrahedral crystal structure, referring to as β-MgH2.
During ball milling as well as under high compressive stress up to 8 GPa, the MgH2 of orthorhombic crystal structure, referring to as γ-MgH2, occurs [4-7].
The crystal structure of the materials was determined by a Rigaku D/Max-rB X-ray diffraction instrument (XRD) at a scanning speed of 2 deg/min and in steps of 0.02o.
Online since: June 2012
Authors: Ming Zhong Li, Yu Hong Jiao, Xiufang Wu, Gui Yang Liu, Shu Qin Yan
As the tissue engineering scaffolds, the pore structure and condensed structure of silk fibroin scaffolds should be adjusted and controlled.
The influence of blend ratios on the pore structure and condensed structure of the scaffolds was investigated.
By adjusting the blend ratios, the pore structure and condensed structure of A. p/B. m silk fibroin blend scaffolds could be controlled.
So it is possible to control the pore structure and condensed structure by adjusting the freeze-drying conditions.
Li: Science China Chemistry Vol. 53(2010), p. 535 [16] M.