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The analyses of the synthesized ZnO nanorods by XRD, SEM, EDS and TEM reveal a single crystal structure with good crystallinity where the nanorod growth is along the [001] direction.
Introduction The crystal of ZnO has the wurtzite structure in the hexagonal close packed (HCP) family with a melting point of 1800°C.
In recent years, there has been extensive study of ZnO thanks to the special physical and chemical properties and potentials in applications of its nano structure[1-11].
The reaction rate increases with temperature with its anisotropic growth structure[15].
Yanagisawa, Hydrothermal synthesis of ZnO Long Fibers, Chemistry Letters. 34 (2005) 1170-1171

The spacial structure, ecological processes and dimension is the core of the landscape ecology study.
The structure, function and dynamic stability of landscape are dependent and interact on each others.
It brings us enormous economical and social benefit, at the same time causes certain effect on the land structure, processes, dimension and ecological system of rivers.
Influence to the landscape ecology by water conservancy projects The formation of landscape structure needs long time, and the ecological system transformates along with transformation.
[2] Jinsong Liu, Linhua Wang, Xiujuan Cong: Chemistry And Industry Book Concem.2003, 6: P121

These phenomena are related to the special properties of the fillers as well as their particulate structures, such as aspect ratio, particle size, and aggregate structure, etc.
C60 is a molecular semiconductor, with the molecular unit consisting of 60 carbon atoms arranged in a nearly spherical structure.
These phenomena may be related to their special properties of the fillers as well as their particulate structures, such as aspect ratio, particle size, and aggregate structure, etc.
In case of CB, it has hierarchy structures.
At high concentrations, however, percolating structure will form and parts of the clusters are not isolated any more.

In this paper we present TiO2-SiO2 with a mesoporous structure obtained using sol-gel method.
The addition of Ti significantly modifies the pore structure of gel systems.
T45S55-6 film does not have pores in the structure of the surface.
The structure of films that contain surfactant is more homogenous.
Sinkó, Influence of Chemical Conditions on the Nanoporous Structure of Silicate Aerogels.

During calcination layered structure is destroyed giving rise to new structures like mixed oxides partially crystallized.
LDHs consist of a layered structure similar to that of the mineral brucite (Mg(OH)2) where a number of the divalent cations (M2+) in the brucite structure are substituted with a trivalent cation (M3+) resulting in a layered structure which carries a net positive charge that is balanced by exchangeable anions intercalated into the interlayer regions as shown in fig. 1.
Schematics of the LDHs structure.
Lamellar structure of LDHs, calcined CLDHs and reconstructed LDHs.
Journal of Industrial and Engineering Chemistry, 21 (2015) 561–568

The technique fulfils a demand to correlate the surface properties of bioceramic implants with the structure and composition of preserved interfaces with tissues.
The third interface studied was an injectable bioceramic material based on calcium aluminate (same chemistry as the first dental interface) [11].
Towards bone, three different zones were detected, the original bone structure, a more dense bone structure and a different less crystalline structure corresponding to the cement.
In electron diffraction, the denser bone structure had larger crystallites (i.e. it scattered more in bright field imaging) than the original bone (rings).
The diffraction patterns from the denser bone structure contained both elongated dots and rings whereas the bright cement areas showed very weak rings.

The unique NiO nanosheets nanotubes show admirable electrochemical performance as an electrode material for supercapacitors owing to the hierarchically tubular structures and hollow interior.
To solve these problems, an alternative way is to construct hierarchical structured and hollow NiO nanomaterials.
After being calcined in air, the hierarchical structured and hollow NiO nanosheets nanotubes are successfully obtained.
A hierarchically structure of the Ni-precursor@PNT composite’s surface can be clearly revealed from the TEM image (Fig. 1D).
The diameter of the hierarchically structured NiO nanosheets nanotubes is about 250-350 nm, smaller than the Ni-precursor@PNT, possibly because of the partial collapse of the NiO nanosheets nanotubes hollow structure at the elevated temperature.

Scanning electron microscopy shows that the synthesized ZnO exhibits a sea urchin-like structure with a homogeneous and consistent size.
Introduction Zinc oxide (ZnO) is a known semiconductor with a wide bandgap (~3.3 eV) and high exciton binding energy of ~60 meV, a wurtzite crystal structure, and piezoelectric properties [1].
In particular, ZnO nanostructures can be tailored into various morphologies; these include nanowires, nanobelts, tubes/rings, twinning structures, hierarchical structures, and heterostructures with other materials using wet chemical methods [4].
On the other hand, in terms of application, a hierarchical self-assemblies of ZnO particles in micrometer-sized structures was also reported with enhanced photocatalytic performance attributed not to the size of the ZnO particles but to the amount of fraction exposed and polar facets present, showing that the photocatalytic activity of the micrometer-sized ZnO structures is morphology-dependent [17].
Yu, “Electrochemical detection of DNA hybridization based on three-dimensional ZnO nanowires/graphite hybrid microfiber structure,” Bioelectrochemistry, vol. 128, pp. 126–132, 2019, doi: 10.1016/j.bioelechem. 2019.04.003

The experimental results show that the prototype of VBMCFD is characterized by reliable process, simple structure, low cost, etc.
It is widely used in the area of biology, medicine, micro-chemistry and so on [1,2].
The cross-section of those devices is circular, but the structure is simple and packageing is difficult [9].
On the basis of silk gland structure detection [11], the bionic micro-channel model [12] has been established with micro-channel and regular function unit, which are connected smoothly. 
The prototype has the advantages of reliable technology, simple structure, stable performance, experimental environment without special requirement, etc

Figure 1 shows the structure of (a) polypropylene and (b) CO2 molecules.
Schematic diagram of micro fibrils structure formed at 158°C and 10 MPa.
As a result, foaming at temperature 158ºC gave a unique micro fibrils cell structure.
Molecular structuring was observed and polypropylene molecules aggregated together and formed a spherical shape structure based on the lowest energy configuration and its stability at the end of the simulation.
Chinese Journal of Chemistry. 30, 115-120 [12] Sharudin, R.W., Ohshima, M. 2011.