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Graphene Based Ultrahin Composite Films Prepared by Layer-by-Layer Electrostatic Assembly and Spinning Coating Yongqiang He1,2,a, Siyao He2,b, Qiaojuan Gong1,c , Jianping Gao2,d and Xiaodong Wang2,e* 1Department of Applied Chemistry, Yuncheng University, Yuncheng 044000, China 2School of Science, Tianjin University, Tianjin 300072, China aheyongqiang@126.com, bsiyaohe@163.com ,cgqjuan@163.com, d jianpinggaols@126.com exdwangls@163.com Keywords: Graphene oxide, Gelatin, Layer-by-Layer assembly, PVA.
The ultra thin graphene oxide/polyvinyl alcohol and graphene-polyvinyl alcohol/gelatin composite films have layered structure with high tensile strength because of the incorporation of GO.
We can clearly see the layer structure of the GO/PVA films.
The ultra thin graphene oxide/polyvinyl alcohol and graphene-polyvinyl alcohol/gelatin composite films have layered structure with high tensile strength because of the incorporation of GO.

Electrocatalytic property of potassium tantalate film coated electrode Zhixia Han1,a , Min Hao1,b, Congyan Li1,c, Jin Guo1,d, Guorui Ma1,e, Xiaojing Wang1,f and Yanhong Zhao1, g* 1 College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China a269852631@qq.com, b1229729646@qq.com, cqianqian8032@163.com, d570279855@qq.com, e1220200755@qq.com, fwang_xiao_jing@hotmail.com, g*ceyanhong@imu.edu.cn Keywords: Potassium tantalate, Hydrothermal, Cyclic voltammetry, Film electrode.
The phase structure of samples prepared was performed by X-ray diffraction (XRD).
The crystal structure of KTaO3 was studied with XRD.
The phase structure was identified by X-ray diffraction (Empyrean, Netherlands) with Cu Kα (λ= 1.5406 Å) radiation at a scan rate of 0.02 2θ S-1.

At the cubic site, a split-interstitial structure is the most stable configuration with C1h symmetry2 Fig. 1: Structures of the most stable neutral silicon-interstitial configurations.
The two stablest structures are shown in Fig. 2.
The initial isolated Sii was at the cubic site in Fig. 2a) structure while it was at the hexagonal site in Fig. 2b) structure, therefore, we call them cubic and hexagonal structures.
The calculated binding energy is about 3.1 eV for both structures.
Due to a frustrated3 Fig. 2: Structures of the most stable Sii-Sii defects.

Here we describe a SWNT-encapsulated semiconductor 1D crystal structure which is not only atomically regulated but which displays a wholly novel structure and coordination scheme [10].
The ambient pressure phase is a diamondlike structure with 50% of the atom positions being occupied by Hg in a strictly alternating fashion with the remaining 50% Te atoms resulting in a net tetrahedral coordination for both elements while the latter structure resembles distorted rocksalt.
Such a bonding scheme would also likely change the fundamental band structure of the resulting HgTe 1D crystal.
The average structure is shown without crystal twist, for clarity.
For the first time, a series of restored images of 1D crystal fragments has been used to reconstruct a complete 3D model for a 1D crystal structure and even to predict the type of bonding that should be formed for this novel structure.

Introduction Layered double hydroxides(LDHs）are lamellar mixed hydroxides containing positively charged main layers and undergoing anion exchange chemistry.
The calcined layered double hydroxides (CLDH) lose the intrinsic stratified structure, then the inherent laminate also remained, CLDH adsorb inorganic anions or water molecule ,the stratified structure would be recover.This feature of LDH is called “memory effect”[6,7].
Based on the “memory effect”, CO32- was exchanged by Cl- when the calcined temperature below 500˚C.The lamellar structure of LDHs was destroyed and it became lesser recovery activity crystal structure above 500˚C so the CLDH lose adsorption ability.
The d003、d006、d009 value were Mg-Al-Fe-LDHs characteristic peak and shown the regular crystal structure and the others were the characteristic peak of NaNO3.
Fig.6 SEM patterns of Mg-Al-Fe LDHs before and after calcination It is the first picture that Mg-Al-Fe LDHs before calcination can see the lamellar structure clearly and the second picture was the Mg-Al-Fe LDHs after calcination (CLDH).There was no distinct lamellat structure in CLDH so that it had no ability to absorb chloride anion.

Although the existing techniques for theoretical and numerical modeling of material micro-structures [1-7] are successful in simulating the formation and structures of grains on fine length scales, in most cases, comparisons between model predictions and experiments could only be made statistically.
Sample-specific bulk material properties would be derived from the predicted microscopic compositional structures.
DCM model and micro-structure simulation Our DCM model has been implemented on a 3-D grid consisting of cubic voxels.
Comparisons of simulated compositional structure with DCM model predictions.
Simulated micro-structures have been used for model verifications.

Introduction It is known that all polymers are classified by intended use, obtaining method, chemical composition, molecular weight, macromolecular structure, structure and ability to crystallize.
Radiative forcing of powerful beams of charged particles leads to significant changes in the polymer structure.
These polymers are linear polyesters, and have higher crystallinity of the structure.
The structure of Mylar has a complex heterogeneous structure of the amorphous regions, with a significant share of interfibrilic amorphous regions separating adjacent microfibrils, along with infibrilic amorphous layers [12, 13].
Zheltobryukhov, Surface modification of PET granules by fluoride-containing urethanes, Journal of Applied Chemistry 85(11) (2012) 1860-1866

The optimum conditions were investigated in achieving micro or nano-structures.
Experimental Details The overall processes of fabricating structures as illustrated in Fig. 1.
From present experiment of quartz etching process using CHF3 etchant, the etching chemistries were described as follows [7]: e- + CHF3→ CHF2+ + F*+ radicals e.g.
Conclusion This study of micro/nano structures fabrications is baseline knowledge to fabricate high aspect ratio structure and 3D structures on quartz in the future.
The optimum conditon for quartz micro and nano structures etching using an ICP-RIE system are needed further investigation since the setting parameter dependent on feature size of structures.

The structure of the sample is studied with X-ray diffraction (XRD) using Cu-Kα radiation.
Aruna, “ Chemistry of Nanocrystalline Oxide Materials, Combustion synthesis, Properties and Applications” World Scientific Publishing, 2008

This paper focuses on investigating the flow structures in a multi-hole swirl burner.
Now, investigations have taken advantage of laser diagnostic techniques[2,3] and large-eddy simulations (LES)[4] to understand the chemistry and fluid dynamics of reacting swirling flows.
The structure of the multi-hole burner is shown in figure, and there are six Φ1.2 mm holes around the axis of burner.
Fig 8 Radial profiles of axial mean velocity in combustion flow fields for different Va(Vf=22.96m/s) Fig 9 α-Va curve Fig 10 ε- Va curve Fig11 Centerline evolutions of V for different Va Conclusions Experiments have been performed to investigate the flow structures of a mul-hole nozzle swirl burner.