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Online since: June 2017
Authors: Guo Xuan Xiong, Ying Yang, Wei Lin Yao
Preparation and Electrical Conductivity of PANI Coated Nickel Fiber Ying Yanga, Guoxuan Xiongb and Weilin Yaoc Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense, East China University of Technology, Nanchang, 330013, China School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang, 330013, China.
Similar to the metal fiber, nickel fiber with large length diameter ratio and make it easier to form bridging structures in conductive composite [6-9].
The chemical shift was in the range of 7.44 to 7.45 and the chemical shift was 7.37 have two sets of peaks, these two peaks are the chemical shifts of hydrogen for the quinone diimine and benzenoid diamine units of the PANI chain structure.
Due to the electronic transition of the doped PANI chain, the resonance structure was produced, which leads to the change of the chemical shift of the H atom of the repeating unit in the intrinsic PANI, and the benzene ring on the electron cloud density decreased, chemical shifts to low field, the electron density of quinoid was increased, chemical shifts move to high field, and the electron transfer from benzene to quinoid.
The above products were analyzed by 1H NMR and 13C NMR, with the types of functional groups of standard spectra and compared with intrinsic state PANI, to make sure the polymer was in accordance with the structure unit of the PANI, and was a doped PANI.
Online since: February 2012
Authors: Cheng Zhu Jin, Ge Zhan
The crystal structure of hexagonal boron nitride is similar with graphite layer structure, presents white powder with loose, lubrication, easy moisture absorption and qualitative light, so name “white graphite”.
Conclusions Silica powder has characteristics of high hardness, high wear resistance, high temperature resistance, and the hexagonal boron nitride crystal is similar to the graphite layer structure and has the very good flow property.
Researches on Crystal Structure of Fine Silicon Powder Recollected from Silicon-iron Production at Different Temperature[J].
Chinese Journal of Structural Chemistry,2004,23(3):306-311.
Online since: August 2022
Authors: Hashem Al-Mattarneh, Marwa Al-Jamal, Sathish Kumar Ramachandran, Rabah Mahmoud Ahmad Ismail, R. Rathinam, Pandurang Y. Patil, Bhasker Pant
Patil7,h 1Civil Engineering Department, Jadara University, Irbid, Jordan. 2Department of Chemistry, Sri Eshwar College of Engineering, Coimbatore -641202, India. 3School of Civil Engineering, Universiti Sains Malaysia, Engineering Campus, Penang, Malayia. 4Department of Biomaterials, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Velappanchavadi, Chennai 600077, India. 5Civil Engineering Department, Yarmouk University, Jordan. 6Department of Computer Science & Engineering, Graphic Era Deemed to be University, Dehradun, Uttarakhand 248002, India. 7Department of Environmental Science, Ratnagiri Sub-Campus,University of Mumbai, Ratnagiri - 415639, Maharshtra, India ar.ismail@jadara.edu.jo, brathinam.r@sece.ac.in, cmarwa@jadara.edu.jo, dajamal@student.usm.my, ersathish1989@gmail.com, fdrhashem2010@yahoo.com, gbhasker.pant@geu.ac.in, hpypatil2009@gmail.com Keywords: Rhodamine B, Photocatalytic degradation, Metal Organic Framework, Mn-BIM
The morphology of the synthesized Mn-MOFs was analyzed by scanning electron microscope revealed that they are sperical like structure (Fig.1). which demonstrated an identical morphology.
It unequivocally indicates the presence of Mn, N, O, and C components, which is compatible with the chemical structure.
Highly conductive transparent organic electrodes with multilayer structures for rigid and flexible optoelectronics.
Cubic-structured tin selenide thin film as a novel solar cell absorber, Phys.
Online since: July 2012
Authors: Nurul Atikah Mohd Mokhtar, Rusdi Roshidah, Azira Azahidi, Kelimah Elong, Nurhanna Badar, Norlida Kamarulzaman
This partial substitution method can stabilize the crystal structure of the cathode compounds [3, 4].
The materials have the hexagonal α-NaFeO2 structure with R-3m space group which is also the same structure as LiCoO2.
All the results confirmed the ordered layered structure of these materials.
The drastic improvement of the electrochemical behaviour of the overlithiated material shows the importance of optimizing the stoichiometry of the cathode chemistry.
Online since: April 2019
Authors: Kelimah Elong, Nurhanna Badar, Nor Fadilah Chayed, Norlida Kamarulzaman
Effect of Cu Doped in MgO on Nanostructures and their Band Gap Energies NOR FADILAH Chayed1,2,a*, NORLIDA Kamarulzaman1,3, NURHANNA Badar1 and KELIMAH Elong1,2 1Centre for Nanomaterials Research, Institute of Science, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia 2School of Chemistry and Environment, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia 3School of Physics and Materials, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia anorfadilah6231@salam.uitm.edu.my Keywords: MgO, doped, band gap Abstract.
Our objective is to produce pure and single phase of Mg0.95Cu0.05O and Mg0.90Cu0.10O materials with a cubic FCC type of crystal structure.
Substitutional doping is another way that can be used to improve this characteristic without changing the crystal structure.
Substitutional doping will result in materials with the same crystal structure as the parent material but the characteristics such as band gap will be differ.
The XRD patterns represent the diffraction peaks of (111), (200), (311) and (222) and indexed to the ICDD pattern number, 01-087-0651 for MgO cubic structure belonging to the space group of Fm-3m.
Online since: December 2007
Authors: Ming Der Ger, Jeou Long Lee, Shih Tsung Ke, Shuo Jen Lee, Yih Min Yeh
A Study of the Microstructure and Properties of Electroformed Ni-P Model Insert Shih-Tsung Ke 1, Jeou-Long Lee2 , Yih-Min Yeh3, Shuo-Jen Lee 4, Ming-Der Ger 1a 1 Department of Applied Chemistry & Materials Science, Chung-Cheng Institute of Technology, National Defense University, Tao-Yuan, Taiwan, ROC 2 Department of Chemical & Materials Engineering, Lung Hwa University of Science and Technology, Tao-Yuan, Taiwan, ROC 3 Graduate Institute of Opto-Mechatronics and Materials, WuFeng Institute of Technology, Chia-yi, Taiwan, ROC 4 Department of Mechanical Engineering, Yuan Ze Fuel Cell Center, Yuan Ze University, TaoYuan, Taiwan, ROC a mdger@ccit.edu.tw Keywords: Ni-P Alloys, Electroforming, Internal stress, Pulse plating Abstract.
Introduction In recent years, due to the development and progress in scientific technology that the mechanism structures and components are in favor of small size such as in micron, sub-micron and even nano meter.
In this research, we focused on develop a new material of Ni-P alloy with nano grain size structure that was produced by PC electroforming.
Furthermore, optima conditions for the Ni-P coatings that with characteristics such as low internal stress, low surface roughness and a specific structure would be selected in this study.
The structure height and size precision are good indicators for microfabrication processes.
Online since: April 2009
Authors: B. Majumdar, S. Sharma, M. Srinivas, P.K. Pujari, G.K. Dey, Dinesh Srivastava, K.G. Suresh, A.P. Srivastava
Suresh# *Materials Science Division, † Radio Chemistry Division Bhabha Atomic Research Center, Mumbai 400 094 # Physics Department, Indian Institute of Technology Bombay, Mumbai 400 076 ¢ Defence Metallurgical Research Laboratory, Hyderabad 500 058, India ** Email: dsrivas@barc.gov.in Abstract Amorphous ribbons of composition Fe68.5Cu1Nb3Si18.5B9 were produced by melt spun unit.
Positron annihilation spectroscopy (PAS) has long been recognized a very sensitive probe of the electronic structure of solids [7-12].
Positron life-time gives information about free volume, concentration and size of positron trapping sites in amorphous and crystalline structures [7-10].
Therefore, positron annihilation characteristics will carry significant information about the nature of the structure of the nano particles and their interfaces in the nanocrystalline materials.
This confirmed that positron life time was smaller in secondary phase than that in primary phase and therefore, it could be concluded that secondary phase Fe2B has less open structure (i.e. lesser free volume) than that of primary phase Fe3Si.
Online since: July 2012
Authors: Zhang Lei Ning, You Yi Zhu, Qing Feng Hou, Guo Qing Jian, Ming Lei
The structure of the purified product was characterized by FITR method.
The molecular structure of the surfactant is the most critical factor which influences the interfacial activity.
The interfacial tension data of different molecular structure alkyl polyoxypropylene sulfonate surfactants are shown in Table 1.
This showed that the alkyl polyoxypropylene sulfonate surfactant had good salt tolerance ability due to the combination of nonionic -PO and anionic –SO3 function group in a surfactant molecular structure.
Oilfield chemistry, 1999, 16(4): 336-340 [5] WU Yali, Zhang Zhen.
Online since: November 2011
Authors: Mohamad Rusop, Shafinaz Shariffudin, Sukreen Hana Herman
The XRD pattern suggested both films are polycrystalline with a wurtzite structure with three main peaks of (101), (002) and (102) peak.
This is supported by XRD result, which confirms that the crystalline structure of 1 hour sample is better than 30 minutes sample.
XRD patterns show polycrystalline structure of the film with peaks of (002), (101) and (102).
From the structural, electrical and optical properties of the ZnO thin film; it is concluded that the sample annealed for 1 hour is preferred due to its good crystalline structure and low resistivity of the film.
Tang, Journal of Physics and Chemistry of Solids, vol. 70 (2009), p. 1359-1362
Online since: January 2013
Authors: Hao Zhang, Wei Fan, Jun Feng Lu
An Investigation of a Novel Parallel Computation Scheme Designed for a Simulation of Amino-acid Leaking Problem inside α-Al2O3 Nano-channels Junfeng Lu1, a*, Hao Zhang1,b , Wei Fan1,c 1Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing, 100190, PR China ajunfenglu@mail.ipc.ac.cn, bstavrosatic@gmail.com, cfanwei@mail.ipc.ac.cn *Corresponding author Keywords: Amino-acid, Water Cluster, MD simulation, Nano-channels, Parallel Computation.
Fig. 2 Overview of molecular structures Inside the membrane pore, three types of molecules (water molecules, amino-acid molecules as well as alumina molecules) interact with each other.
Thus, we choose α-Al2O3 crystalline structure[11] as the basic structure of the pore wall (Fig. 2(c)).
Thus, the recursive arrangement of α-Al2O3 crystalline structure is: AcαBcβAcγBcαAcβ Bcγ (12 layers).