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The structure of single polytetrafluoroethylene composites were analyzed by IR and SEM.
According to molecular structure of PTFE, it has a number of unique properties [3].
High Energy Chemistry, 2010, 44(1): 63-74
J Structural Chemistry, 2002, 43(1): 64-8.

It was found that an electric field had an effect on the crystal structure,the particle size and morphology.
However, the structure is formed by uniform flacks with common nuclei, rather than flower-like structures.
In the ZnO structure, each Zn2+ ion is surrounded by four O2- ions and vice versa.
Zhang: Journal of Physics and Chemistry of Solids, Vol. 71 (2010), p.364
Ma: Chinese Journal of Application Chemistry, Vol. 13 (1996), p.92

Figure 1 shows a typical cage structure with R representint the hydrolyutically stable group bonding to Si.
By mixing equal molar quantities of a precursor with 2 reactive groups with a precursor with 1 reactive group, many structures can form.
A simple calculation of the %SiO2 in each of these structures is given in Table 3.
The molecular structures are shown in Fig. 5.
Wojcik "Organo-silica Sol-Gel Materials", in The Chemistry of Organosilicon Compounds Vol. 2, Rappoport Z, Apeloig Y (eds.), Wiley, London, 1998 pp. 2317-2362

The initial structures F-doped g- C3N4 is created by replacing N atom at the sites in the g- C3N4 structure by F atoms.
As shown in Fig. 4, the surface of all doped samples is relatively similar to pure g-C3N4 in which is consisted of gill-shape structure.
However, nanosheet-structure in doped-samples is flatter and looser than that in CN-550 which could be attributed to the doping effect of fluorinating to g-C3N4 structure.
This comment demonstrated the influence of hetero-atoms to increase stableness of graphitic structure of carbon nitride.
[24] Daqiang Gao, Yonggang Liu, Minyue Song, Shoupeng Shi, Mingsu Si and Desheng Xue, Manifestation of high-temperature ferromagnetism in fluorinated graphitic carbon nitride nanosheets, Journal of Materials Chemistry C, (2015), 3, 12230-12235

Due to the miniaturization of wiring structure, cable capacitance and the interlayer capacitance, and the rise of wire resistor, make the increase of RC delay caused by wire resistor R and capacitor C, limiting the speed performance of the device, increasing the power consumption.
Traditionally low dielectric constant are divided into two categories of organic and inorganic materials, from the structure can be divided into body materials and porous materials.
PPO molecules have regular molecular structure without strong polar groups to maintain good electrical properties in a wide range of temperature and frequency.
Materials Chemistry and Physics. 2009, 113: 290-295
Journal of Macromolecular Science Part A- Pure and Applied Chemistry. 2008, 45: 1049-1056

Research Interests Current research topics are focused on structural integrity and structural collapse, environmental and construction risks design and verification of RC and steel structures, degradation of civil structures, high strengthened and corrosion and hydrogen resistant metals and protective coatings.
 2000: Technical University of Gdansk, Department of Materials Science and Engineering, Institute of Physical Chemistry of the Polish Academy of Science, Department of Electrochemistry and Corrosion,  1996-1998: Institute of Metallurgy, ETH Zurich, Switzerland,  Participation in the international conferences (with plenary lectures and oral presentations) in Belgium, Bulgaria, Canada, Germany, Greece, Czech Republic, Finland, Italy, Hungary, Poland, Russia, Switzerland, Sweden, Ukraine.
Reviewer of various associations and international publications in on-line, open access journal in the fields of fracture and solid mechanics and in structural and material engineering, as the International Journal of Fracture, Engineering Fracture Mechanics, Materials Science, Welding Technology Review, Maintenance Problems, Mechanical Fatigue of Metals, Tribology International, Materials Chemistry and Physics, Advances in Mechanical Engineering.

Effect of the Addition of Ti3+ into TiO2 Film on the Performance of Dye Sensitized Solar Cells Junhui Xiang1,2,3, Zhi Zhang 3, Fushi Zhang 3, Shoji Kaneko1, Masayuki Okuya 1 and Huiping Zhang1 1 Graduate University of the Chinese Academy Sciences, College of Chemistry and Chemical Engineering, China 2 Department of Materials Science and Technology, Shizuoka University, Japan 3 Department of Chemistry, Tsinghua University, China Keywords: low-valence additives, Ti 3+, dye sensitized solar cell, electron transfer Abstract.
The simplified lattice structure of TiO2 and Ti2O3 were showed in Fig.1.
O O O O O O O O O O Ti Ti Ti Ti Ti Ti Ti Ti Ti O O O O O O O O O O O Ti Ti Ti Ti Ti Ti Ti Ti Ti (a) TiO2 (b) Ti2O3 Fig.1 Simplified lattice structures (a) Open Circuit Voltage (b) Short Circuit Current (c) Efficient of Solar cell Fig. 2 Relationship between the ratio of Ti3+ / Ti4+ O O O O O O O O O O Ti Ti Ti Ti Ti Ti Ti Ti Ti O (a) Without TiCl3 addition (b) With TiCl3 addition Fig.3 Free electron could be captured to form Lane pair electrons Fig.4 SEM Sections of TiO2 films A coarse surface enlarged the special surface area of the film, which was benefit for absorbing more dye molecules than a smooth one.

　Coherent ring currents in chiral aromatic molecules induced by linearly polarized UV laser pulses Manabu Kanno1, Hirohiko Kono1, Hirobumi Mineo2, Sheng Hsien Lin3,4, and Yuichi Fujimura1,4, a 1Department of Chemistry, Graduate School, Tohoku University, Sendai 980-8578 Japan 2Institute of Applied Mechanics, National Taiwan University, Taipei 106, Taiwan 3Institute for Atomic and Molecular Science, Taipei 106, Taiwan 4Department of Applied Chemistry, Center for Interdisciplinary Molecular Science, National Chiao-Tung University, Hsin-Chu 300 Taiwan afujimurayuichi@m.tohoku.ac.jp Keywords: Optical devices, Coherent ring current, Chiral aromatic molecules, Current-induced magnetic flux Introduction In recent years, laser control of electrons in molecular system and condensed matter has attracted considerable attention with rapid progress in laser science and technology [1].
Principle of preparation of coherent ring currents Figure 1 shows the geometrical structures and transition moments mLG (mHG) between the ground and nearly degenerate excited states (L and H) of two enantiomers (R)- and (S)- DCPH.
Structures of (S) and (R) DCPH ( 2,5-dichloro[n](3,6)pyrazinophane, and direction of transition moments mLG and mHG of an R enantiomer (left-hand side) and energy levels (right-hand side).

Wu[6] developed a CFD model for a mechanically-valved Helmholtz type pulse combustor to simulate the basic dynamics of flame structure, flow-chemistry interaction and the resulting pulsation.
Axial and radial momentum equation (3) And (4) where (5) The standard k-epsilon turbulence model is used to predict gas flow, (6) and (7) Energy equation (8) wheredescribes the heat release of gas fuel species’ combustion, (9) One-step propane combustion chemistry is assumed to model combustion in this paper, (10) The reaction rate is computed considering both the Arrhenius law and the Magnussen-Hjertager model.
The inlet propane/air mixture temperature is specified to be 300K. 1.2 Meshing and solving Uniform and structured mesh grid are used, and the grid spacing of 1mm, a total of 29,960.

It has a cubic crystal structure with Fm-3m space group.
The patterns are matched to the ICDD reference pattern number, 01-087-0651, which show a cubic structure belonging to the space group Fm-3m.
Sanjeeviraja: Radiation Physics and Chemistry 78 (2009), p. 914-921. [4] A.Kumar and J.Kumar: J.
Physics and Chemistry of Solids 69 (2008), p. 2764-2772