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Biomaterials science encompasses elements of medicine, biology, chemistry, tissue engineering and materials science.
They are often used and/or adapted for a medical application, and thus comprises whole or part of a living structure or biomedical device which performs, augments, or replaces a natural function.
Interestingly, the vital organisms through which these crystalline minerals form are capable of consistently producing intricately complex structures.
For example, biomimetics is a branch of biological engineering which strives to find ways in which the structures and functions of living organisms can be used as models for the design and engineering of materials and machines.
Thus biological engineering is a science-based discipline founded upon the biological sciences in the same way that chemical engineering, electrical engineering, and mechanical engineering are based upon chemistry, electricity and magnetism, and classical mechanics, respectively.

And scientists are researching more economic ways to produce these structure [[] A.
Al-Warthan, Carbon nanotubes, science and technology part (I) structure, synthesis and characterization, Arabian Journal of Chemistry, 5 (2012) 1-23. ].
From the first study of graphene’s band structure by Wallace in 1947, the followers Geim and Novoselov [[] K.S.
Poh, Graphene for electrochemical sensing and biosensing, Trends in Analytical Chemistry, 29 (2010) 954-965. ,[] M.
Rius, Electrochemical sensing based on carbon nanotubes, Trends in Analytical Chemistry, 29 (2010) 939-953. ].

The quantity of [SiO4] structure decreases but the borate six-membered ring with [BO4] units increases simultaneously in glass structure.
However, Na2O introduction not only promotes transformation from [BO3] to [BO4] but also leads to depolymerization of [SiO4] framework structure and chain structure groups.
Polunina: Glass Physics and Chemistry, Vol. 28 (2002) No. 2, p. 96-102
Eremyashev: Glass Physics and Chemistry, Vol. 39 (2013) No. 2, p. 105-112
Kistaiah: The Journal of Physical Chemistry A, Vol. 113 (2009) No. 11, p. 2397-2404

Introduction From the molecular structure theory, we can know that each atom in the molecule bonded together through the chemical bond strength. 
At the same time, with the continuous development of computer technology and the algorithm based on quantum chemistry can increase, the system continuously, now quantum chemistry in computer aided drug design has played an irreplaceable role.
Results and discussion Taking C7H12O+ stable structure as the basis, we use the CIS method C7H12O+ ground state of the optimized calculated internal coordinates as input, using the CIS method, 3-21G * basis set C7H12O+ low-lying excited states of stable structures, as shown in figure 1: Figure 1: C7H12O+ structure This paper examined a total of two low C7H12O+ excited states, we get the frequency of each excited state and energy, and the results list in table 1: Table 1 C7H12O+ different frequency and energy of the excited state Excited state Different imaginary frequency number Freq（cm-1） E（CIS） S4（root=4） S4-1 f=-456.709 E=-344.4659（a.u.）
C4H6O+ structure shown in Figure 2: Figure 2：C4H6O+ stable structure It is the parent ion 1C-7C, 4C-5C fracture, generates C4H6O+ pieces.
The basic principles of quantum chemistry and ab initio calculation [M].Beijing: Science press, 1985 [3] Lubman D M, Naaman R, Zare R N.

., Douliou, Yunlin, Taiwan 64002, R.O.C.. 4 Faculty of Chemistry and Material Science, Xiaogan University, Xiaogan, Hubei 432100, China.
Most of clay is layered structure and each layer is about 1 nm thick.
Wei: Chemistry of Materials, Vol. 11 (1999), p.1942 [7] T.
Pinnavaia: Chemistry of Materials, 6 (1994), p.573 [8] R.
Okada: Journal of Polymer Science Part A: Polymer Chemistry, Vol. 35 (2000), p.2289 [11] D.C.

Chaudret,, Journal of Organometallic Chemistry, 643/644 (2002) p. 307–312. ,[] W.D.
In Fig. 2 the X-ray diffraction analysis shows a monophased structure and the Miller indices (hkl) can be assigned to the hexagonal structure in good agreement with JCPDS data card No 36-1451.
Sen, Materials Chemistry Physics, 74 (2002) p. 83-91. ].
, [] N.S.Pesika, K.J.Stebe, P.C.Searson, Journal of Physical Chemistry B, 107 (2003) p.10412–10415. ].
These powders have been indexed as hexagonal structure with an interval of crystallite sizes from 13 to 90 nm.

Marii Curie-Sklodowskiej 1, 20-031 Lublin, Poland, email: radzal@hektor.umcs.lublin.pl 2 Faculty of Chemistry, Maria Curie-Sklodowska University, Pl.
Their structure consists of hexagonal arrangement of the cylindrical pores.
Further LC intensity decrease is due to o-Ps escape from the empty pore structure.
Unger (The Royal Society of Chemistry, 1997), p.81
Jean (Eds.): Positron and Positronium Chemistry (Elsevier, Amsterdam, 1988)

To determine the correlation between the hampers effect and the structure of TCPE molecular, a number of chemical characteristics were computed.
Based on the procedure of adsorption and the component structure found in the TCPE, the inhibitory mechanism on the MS surface may be described.
The authors also thank Chemistry Department, Universitas Andalas Padang, for providing the lab equipment.
Ito, Tannin of Constant Structure in Medical and Food Plant, Hydrolyzable Tannins and Polyphenol Related to Tannins, Journal of Moleculer Structure. 16 (2011) 2191-2217
M., Mitigation of Mild steel Corrosion in Acidic Solution Using Inhibitor, E-Journal of Chemistry. 8(1) (2011) 53-60

This book covers the subject areas of supermolecular chemistry and crystal engineering, polymer chemistry, physical chemistry of solid surface and catalysis, electrochemistry, inorganic and materials, chiral catalysis and organic synthesis, food chemistry, food flavor chemistry and food sensory science, theoretical and computational chemistry, chemical biology and medicinal chemistry, analytical chemistry and environmental chemistry.
Rong Cao, Fujian Institute of Research of the Structure of Matter, CAS Prof.

Milošević1, f 1 Institute of Technical Sciences of Serbian Academy of Scineces and Arts, Knez-Mihailova 35/IV, Belgrade, Serbia and Montenegro, 2 Department of Chemistry, University of Belgrade, P.O.
The particle morphology, phase composition and chemical structure were revealed in accordance to various analysis methods (XRD, DSC, SEM/EDS, TEM) and discussed in terms of precursor chemistry and process parameters.
It has been shown that different particle growing morphologies (either spheroidally or pyramidally shaped) were influenced by the precursor chemistry, processing parameters and the presence of noble metal ions.
Due to high velocity of droplet/particle heating and cooling, metastable structures could be obtained.
The evidence of the particle inner nano-structure is obtained by TEM analysis, Fig.1e.