Nanostructured silicon

Nanostructured Silicon and its Application as the Transducer in Immune Biosensors... 

Keywords Nanostructured silicon Photoluminescence Electro-conductivity Immune biosensors T2 mycotoxin... 

Luchenko AI, Melnichenko MM, Svezhentsova KV, Shmyryeva OM (2006) Complex studies of properties of nanostructured silicon. Proc of SPIE 6327 1-11... 

Germanenko et al. [153] suggested an explosive detector based on the photolumines-cence of silicon nanostructures. Silicon nanocrystals are first prepared by laser vaporization (LVCC). After suspension in methanol, the silicon nanocrstyals are excited by a laser at 355 nm, resulting in photoluminescence. They found that nitrotoluenes quench the photoluminescence from the silicon nanocrystals. Quenching rate constants for a number of nitro-compounds were presented. 

Gao B, Sinha S, Fleming L, Zhou O. Alloy formation in nanostructured silicon. Adv Mater 2001 13 816-819. 

Graetz J, Ahn CC, Yazami R, Fultz B. Highly reversible lithium storage in nanostructured silicon. 

Kilian KA, Booking T, Gaus K, King-Lacroix J, Gal M, Gooding JJ (2007) Hybrid lipid bilayers in nanostructured silicon a biomimetic mesoporous scaffold for optical detection of cholera toxin. Chem Commun (Camb) 1936-1938... 

Figure 2. Photovoltage transients for nanostructured silicon built-in the anodic alumina film (70 nm) at different temperatures. The shape of the laser pulse is presented for comparison.

Nanostructured silicon built-in an anodic alumina is evident to be a promising material for photovoltaic applications. In view of cheap materials and low cost equipment the investigated films could be used for solar cell fabrication on large area substrates. Thus the fabrication of new nanostructures based on silicon clusters built-in an anodic alumina opens new possibilities for nanotechnology in electronics and photonics. 

OXIDATION BEHAVIOR OF MICRO- AND NANOSTRUCTURED SILICON POWDERS... 

Another remarkable synthetic effort has been made by the preparation of colloidal Q-particles of the technically more relevant IV-IV materials (i.e., silicon and germanium) [20-25]. Silicon nanoparticles, especially, are currently drawing a lot of attention, since it was found by Canham [26] that nanostructured silicon formed under anodic etching of silicon wafers (called porous silicon ) exhibits bright red fluorescence. Due to the indirect nature of the band transition, bulk silicon shows, by contrast, almost no fluorescence and thus cannot be utilized for optoelectronic devices. 

ARTIFICIAL BALL LIGHTNING FORMED BY EXPLOSION OF NANOSTRUCTURED SILICON... 

Henley et al. [198] nanostructured silicon thin film surface using KrF excimer laser in vacuum up to lOJ/cm fluence at 50 shots and at lOHz repetition rate. They have shown that such nanostructured surfaces can be used for catalytic growth of vertical carbon nanombes (Figure 4.28). 

AFM images for laser nanostructured silicon wafer in unfocussed excimer laser condition (a) without irradiation (b) 0.25J/cm2 for 1000 shots. 

Abel, P. R. Lin, Y.-M. CeUo, H. Heller, A. Mullins, C. B. Improving the stability of nanostructured silicon thin film lithium-ion battery anodes through their controlled oxidation, ACS Nano 2012, 6, 2506-2516. 

In addition to one-dimensional and two-dimensional silicon anodes, several forms of three-dimensional nanostructured silicon have been explored. For example, silicon nanotubes (Fig. 15.9) were investigated by Cho et al. [21] as an anode material for lithium-ion batteries. Both interior and exterior surfaces of the nanotubes are accessible to the electrolyte and lithium ions. Through carbon coating, a stable solid electrolyte interface (SEI) was generated on the inner and outer surfaces of the silicon nanotubes. These silicon/carbon assemblies showed a reversible capacity as high as 3,247 mAh/g (based on the weight of silicon) and good capacity retention. 

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