Báo cáo hóa học: " Formation of silicon nanodots via ion beam sputtering of ultrathin gold thin film coatings on Si" pot

... impurity effects on silicon nanostr ucturing. In this work, we report the formation of s ilicon nanodots on silicon substrates via low-energy ion irradiation of ultrathin film gold coatings onSi.NoimpurityseedingwasnecessarytoformSi nanostructures. ... Access Formation of silicon nanodots via ion beam sputtering of ultrathin gold thin film...

Ngày tải lên: 21/06/2014, 03:20

... the interval of sputtering from ~ 3 ls to the end of the pulse. The shape of the voltage pulse waveform strongly influences the utilization of the sputtering within the pulse -on time. No sputtering ... investigation of the correlations between the deposition process parameters and the properties of the TiO 2 films showed that an increase of repetition frequency f r from 10...

Ngày tải lên: 22/06/2014, 22:20

... technique of reflection of high energy electron diffraction (RHEED) has been used to monitor the evo- lution of the surface structure during the growth of the solid solution Ge 0.96 Sn 0.04 on Si(100). ... Relying on the reflection of high energy electron diffraction, AFM, and STM, it is concluded that molecular beam growth of Ge 1-x Sn x heterostructures with the small conc...

Ngày tải lên: 21/06/2014, 06:20

... multinucleated giant cell formation. Glia 1993, 8(1):51-61. 31. Tambuyzer BR, Nouwen EJ: Inhibition of microglia multinucle- ated giant cell formation and induction of differentiation by GM-CSF using ... is conceivable therefore that a signal is transmitted retrogradely from ventral horn cells to these supraspinal regions to trigger formation of microglial fusions, consistent with...

Ngày tải lên: 19/06/2014, 22:20

... conditions, where the high concentration favoured the thermodynamic conditions for crystal growth and the low concentration resulted in a diffusion-controlled kinetic environment for growth of hierarchical ... concentration difference and gradient (CDG) technique [20]. This CDG technique used a high local concentration of one reactant mixed with a low concentration of another reactant u...

Ngày tải lên: 21/06/2014, 05:20

... spectroscopic analysis of the clusters was also carried out by mat rix- assisted laser d esorption ionisation t ime -of- flight mass spectroscopy (Brücker Daltonics, Autoflex, Bremen, Germany). Results First of all, ... open question. Introduction It is known that clusters composed of C 60 molecules such as chains and sheets can be formed by polymeris- ing C 60 molecules via the irrad...

Ngày tải lên: 21/06/2014, 06:20

... investigation reveals that at lowest concentration of ZnO-MFs solution inhibiting the growth of microbial strain which was found to be 5 lg/ml for all the tested pathogens. Additionally, on the basis of ... based on the initial precipitation of Zn(OH) 2 2? and [Zn(OH) 4 2- ] 2? in an aqueous solution of refluxing pot. In the solution of zinc acetate di-hydrate and sodium hydro...

Ngày tải lên: 21/06/2014, 07:20

... yield of 70% were synthesized. The surface polariza- tion and the expansion of carriers’ wavefunctions contributed to the spectral red shift. The spectra red shifts during the formation of CdSe ... shift of the spectrum. The particle collision in solution also contributes to the instable emission strength [6]. The oxidized surface can be peeled off after inelastic interparticle coll...

Ngày tải lên: 21/06/2014, 17:20

... the monolayer formation. Silicon wafers were dipped in the TPDA solution of particular concentrations and were re- moved from solution after selected time intervals. Static water contact angles of ... findings demonstrated in the previous paragraphs. Effect of TPDA Concentration The effect of TPDA concentration on the film thicknesses and water contact angles on the hydroxylated...

Ngày tải lên: 22/06/2014, 18:20

... 3rd, Sawyer TK, et al.: Identification of Src-specific phosphorylation site on focal adhesion kinase: dissection of the role of Src SH2 and catalytic functions and their consequences for tumor cell behavior. ... cancer focusing on proliferation, oncogenesis and cell adhesion. (Continued) Journal of Translational Medicine 2008, 6:69 http://www.translational-medicine.com/content/6/...

Ngày tải lên: 18/06/2014, 15:20