Nanowires lithographic templates

Soft lithography includes a collection of lithographic methods in which a soft mold or template is used to create patterned structures in the subjeeted materials. These methods offer attractive solutions for producing well-ordered CP nanowires. For example, Beh et al have developed a micromolding in capillaries (MIMIC) process in which a poly(dimethylsiloxane) (PDMS) mold with embedded ehannels can be used for the... 

Fig. 4.12 SEM image of gas sensors with metal nanowires, (a) Lithographically patterned Pd nanowire with t = 100 nm, w=300 nm, and /= 10 pm. Four Ti/Au inner electrodes were patterned on the Pd nanowire, (b) Pd nanowire grown by electrodeposition into nanochannels of AAO templates d=20 nm (Reprinted with permission from Jeon et al. 2008 and 2009, Copyright 2008 and 2009 lOP)...

A related electrochemical approach to nanoelectrode fabrication was previously demonstrated by Peimer s group. In this case a nanotrench electrode was instead used as a template for the electrodeposition of metal nanowire electrodes in a method referred to as lithographically patterned nanowire electrodeposition (LPNE). Simple photolithography was used to define a sacrificial nickel or silver nanoband electrode sandwiched between... 

Besides the aforementioned templates, many other research groups have developed their own template-based electrochemical synthesis techniques. For example, photolithography methods such as the lithographically patterned nanoscale electrodeposition (LPNE) method developed by Penner are excellent ways to produce nanostructures with controllable dimensions. - With this process, the Penner group has been able to produce nanowires with length scales in the macroscale while still maintaining precise control over the nanowires height and width with resolutions in the tens of nanometers." ... 

In a method called lithographically patterned nanowire deposition (LPNE), developed by Penner and coworkers, a template for the growth of nanowires is temporarily fabricated on the surface of a dielectric using standard photolithographic methods.The nanowire is grown by... 

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