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Then the stacked structures of Cu/Ta-Al-N/Si were prepared and annealed at temperatures varied from 400°C to 900°C for 5 minutes in a N2 ambient tube.
D/MAX 2550 XRD was used to analyze the micro-structure.
the failure mechanism of Cu/Ta-Al-N/Si multilayer structures.
[7] Yin K M, Li C,Chen F R: Materials Chemistry and Physics, 2001,71(1):1-6
[8] Kuo Y L, Huang J J, Lin S T: Materials Chemistry and Physics，2003，80（3）：690-695 a Cu3Si c Fig.4 SEM images of Cu/Ta-Al(120W)-N/Si surface (a)as-deposited (b)800℃/300s FA (c)900℃/300s FA b

Density functional theory (DFT) calculations have been proven to be an effective tool to comprehend structure and reactivity of the porous catalysts.
Theoretical Details Electronic structures of UiO-66 and UiO-66-SO3H as well as the ammonia adsorption mode on these MOFs were explored by DFT calculations.
Computational results UiO-66 and UiO-66-SO3H structures were studied with DFT and MP2 calculations.
The structure of UiO-66 and UiO-66-SO3H was identified by X-ray diffraction technique.
Lamberti, Disclosing the complex structure of UiO-66 metal organic framework: A synergic combination of experiment and theory, Chem.

From then on, many companies and college institutions devoted into researching solid phase method, such as Goodrich, Du pond, Beijing University of Chemistry and Qingdao Institute of Chemical Technology [4].
And we obtained the concentration of each structure in all the chlorine-substituted structures listed in Table 3.
Table 5 lists all the substituted types in CSM (unsubstituted structure, mono-chloride substituted structure, vicinal dichloride structure, vinyl chloride structure, 1,4- and 1,5-structure and -CH3).
Table 6 Structure distribution of chloride substituted structure in CSMs Types of Structure Mole fractions of chloride substituted structure[%] CSM 3550 CSM 3570 CSM 40 Hypalon 40 Mono-chloride substituted (00100) 35.91 36.26 42.65 49.84 Vicinal dichloride structure (01100) 15.94 15.42 13.25 12.39 Vinyl chloride structure (10101,10100) 48.16 48.32 44.09 37.77 All in all, it can be observed that CSM 3550 and CSM 3570, which prepared by gas-solid phase, was dominated by vinyl chloride structure (10101, 10100) and vicinal dichloride structure (01100).
While the concentrations of mono-chloride substituted structure (00100) and unsubstituted structure (00000) were lower than CSM 40 and Hypalon 40.

Journal of Physics and Chemistry of Solids, 2022. 162: p. 110503
Coordination Chemistry Reviews, 2023. 477: p. 214965
Inorganic Chemistry, 2019. 58(11): p. 7602-7614
Materials Today Chemistry, 2022. 26: p. 101205
Journal of Energy Chemistry, 2023. 76: p. 295-331

Pore structure is surveyed and evaluated by nitrogen adsorption - desorption isotherm.
The adsorption characteristic of ultrafine coal powder not only depends on its pore structure, but also its surface structural chemistry.
The two series of coal have very big difference in aperture structure and surface chemical structure after coking.
Because of pore types (mainly contain microporous) and surface chemistry structure (aliphatic and alkane functional group contained), the lignite series are more suitable for methane adsorption, which makes the adsorption capacity of two series always have certain disparity.
M.Dubinin, In: Chemistry and Physics of Carbon, edited by P.

Electrolytes for sustainable laser-chemical machining of titanium, Stellite 21 and tool steel X110CrMoV8-2 Olga Hauser1,a, Salar Mehrafsun1,b and Frank Vollertsen1,2,c 1BIAS – Bremer Institut für angewandte Strahltechnik, Klagenfurter Straße 2, 28359 Bremen, Germany 2Universität Bremen, Fachbereich Produktionstechnik – Maschinenbau & Verfahrenstechnik – Badgasteiner Straße 1, 28359 Bremen, Germany ahauser@bias.de, bmehrafsun@bias.de, cvollertsen@bias.de Keywords: Laser micro machining, Etching, Micro structuring Abstract.
Laser-chemical micro structuring offers a possibility to process particular metals nearly without any mechanical or thermal stress.
Laser-chemical machining offers a suitable solution for the microstructuring of metals.
Laser-chemical process fundamentals The underlining theory of laserchemistry is to cause a thermochemical material removal reaction by increasing the surface temperature using laser radiation.
These results are a step towards environmental friendly manufacturing in laserchemistry.

The SEM analysis of pre-treated POMFAW shows less fibrous form than cubic structure.
The more cubic structure and porous characteristics of the POMFAW particle has been found by the SEM image of x 500 in the Fig.1.
The morphology structure indicates the irregular form with a sizable fractions of cellular textures.
Hamid, Recovery of nickel from spent catalyst from palm oil hydrogenation process using acidic solutions, J. of Industrial and Engineering Chemistry. 16 (2010) 251-255
[16] A.Allwar, Characteristics of pore structures and surface chemistry of activated carbons by physisorption, FTIR and Boehm methods, IOSR J. of Applied Chemistry, 2(1) (2012) 9–15

In each case, the fluorite type structure was identified.
This crystalline structure is desired in an ionic conductor such as solid electrolyte applications [15].
Segal, Chemical synthesis of ceramic materials, Journal of Materials Chemistry, 7 (1997) 1297–1305
Kareiva, Sol–gel preparation and characterization of gadolinium aluminate, Materials Chemistry and Physics, 102 (2007) 105–110
Rajendran, Effect of micro- and nano-structures on the properties of ionic conductors, Solid State Ionics, 70–71 (1994) 83–95.

Structure and Properties of Epoxy Resin/Poly (aryl ether ketone) Blends Cured with 4,4'-Diaminodiphenylmethane Zhou Jiangang1, 2 , Zeng Liming1 1.College of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,P.R.China;2.Department of chemistry and materials science, Xiaogan University, Xiaogan 432100,P.R.China;email:zjgxzq@yahoo.cn Keywords: poly(aryl ether ketone); epoxy resin; toughening; nanometer size Abstract.
The microscopic phase structure and morphology of impact fractured surface were observed by SEM, the phenomenon of microscopic phase separation and heat resistance property were studied by DMA.
The microscopic phase structure and morphology of impact fractured surface of each specimen were observed by Scanning electron microscopy (SEM) using a Hitachi S-4800 scanning electron microscope (Japan) and the specimen of microscopic phase structure was cast film etched by chloroform (CHCl3). 2 Results and discussion 2.1 Microscopic phase structure (a) (b) Fig.1 SEM of EP/DDM/PEK-C system microscopic phase structure: (a) 10000×; (b) 100000× Fig.1 shows microscopic phase structure of EP/DDM/PEK-C system with 9% PEK-C, the black points were left when PEK-C as dispersed phase etched by CHCl3.
Related literature show that phase structure of the cured blends turned from dispersed phase structure to co-continuous two-phase structure and then to phase inversion structure when the content of thermoplastic increased in the modified EP system[5].
Structure development in epoxy resin modified with poly(ether sulphone) [J].Polymer,1989,30:662-667 [3]P.A.Oyanguren, P.M.Frontini, R.J.J.Williams, E.Girard-Reydet and J.P.Pascault.

Quantum dots contain a certain amount of heavy metals and the surface chemistry is more complex, so the potential toxicity of quantum dots to organisms is still worth exploring.
In summary, the surface structure of the quantum dots modified by thioglycolic acid is shown in Fig. 7.
The structure was characterized by IR, UV, fluorescence, transmission electron microscopy and X-ray diffraction.
Chemistry of Materials.
Smith, S.M Nie: Semiconductor nanocrystals: Structure, properties, and band gap engineering.