Nanowire, silicon-based

In the following, experimental details will be given. The methods of synthesizing nanoparticles, nanostructures, and silicon-based nanowires will be discussed. The analytical tools will be briefly described. 

FIGURE 10.1. Apparatus used to grow silicon-based self-aligned nanostructures and nanowires. A quartz tube was placed in a high temperature furnace (shown here). Ar, H2 and CH4 selectively flowed through the tube. 

J. D. Carter, Y. R. P. Qu, L. Hoang, D. J. Masiel, and T. Guo, Silicon-based nanowires from silicon wafers catalyzed by cobalt nanoparticles in hydrogen environment, Chem. Commun. 211 A—2216 (2005). 

Silicon-based ICs 1961 III-V semi, Si-nanowire, carbon nanotube 2011-2015 Scaling performance power... 

Silicon-based nanowires Real-time detecdon and dtradon of andbodies, viras detecdon, chip-based biosensors 48... 

Zhang JG et al (2010) Vapor-induced solid-liquid-solid process for silicon-based nanowire growth. J Power Sources 195 1691-1697... 

Tang YH, Sham TK, Jurgensen A, Hu YF, Lee CS, Lee ST (2002) Phosphorus-doped silicon nanowires studied by near edge x-ray absorption fine structure spectroscopy. Appl Phys Lett 80 3709-3711 Teo BK, Sun XH (2007) Silicon-based low-dimensional nanomateiials and nanodevices. Chem Rev 107 1454-1532 Thanh NTK, Green LAW (2010) Fnnctionalisation of nanoparticles for biomedical applications. Nano Today 5 213-230... 

Carter, J., Qu, Y., Porter, R., Hoang, L, Masiel, D. and Guo, T. (2005) Silicon-based nanowires from silicon wafers catalyzed by cobalt nanoparticles in a hydrogen environment Chemical Communications, 17, 2274-6. 

Nguyen HT, Zamfir MR, Duong LD, Lee YH, Bondavalli P, Pribat D (2012) lumina-coated silicon-based nanowire arrays for high quality Li-ion battery anodes. J Mater Chem 22 24618-24626... 

However, it is unclear what the growth mechanisms are because no Si feedstock was fed in the gas form, which is required for the tip-growth model to work. In the following, we will discuss the composition and growth mechanisms of the nanowires made in this work, and show that the Co nanoparticles may play a dual-catalytic role by helping form gaseous silicon species and catalyze the growth of Si-based nanowires. 

Li et al. [61] reported a novel method using a sequence-specific label-free DNA sensors based on silicon nanowires (Si-NWs) by measuring the change in the conductance. Kelley s group [62] developed a gold nanowire array (Au-NW) in 15-20 nm diameter range and this array was used for electrochemical DNA detection with the help of the elect-rocatalytic reporter systems, Ru(NH3)6+ and Fe(CN). ... 

It is probable that rather than using self-assembly to add any active molecules to the device architecture, the nanowires used to construct the devices will be precoated with active molecules via spin coating as shown by Lieber in his recent work.53 Specially doped silicon nanowires have also shown interesting properties in crossbar-based devices.54... 

While the discussion in this chapter has focused on molecular layers on single crystal silicon surfaces, the attachment chemistries discussed here could easily be applied to functionalize silicon nanowires or nanoparticles. Silicon nanowires have been shown to exhibit interesting electrical transport characteristics and have been used to fabricate nanoscale pn junctions [95], field effect transistors [96] and biochemical sensors [97-100]. However, all these interesting phenomena have been reported on oxidized silicon nanowires. It is likely that better control over the surface properties, as could be achieved by employing some of the chemistry discussed here, could significantly improve the performance of these nanowire-based devices. From another perspective, silicon nanowires could prove extremely... 

K. Nauka, and R. S. Williams, Sequence-specific label-free DNA sensors based on silicon nanowires , Nano Letters 4, 245 (2004). 

---