Creation of Metal and Semiconductor Nanostructures Using DPN Nanolithography Techniques
Final rept. 1 May 2002-30 Nov 2005
DUKE UNIV DURHAM NC DEPT OF CHEMISTRY
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Funds from AFOSR were used to support research activities on the fabrication and modification of nanoscaled structures using scanning probe microscope SPM based methods. Over the period of 3 and half years, significant progresses have been made to demonstrate the usefulness of SPM-based lithographic techniques. Major achievements include 1 direct fabrication of polymeric nanostructures by initiating electrochemical polymerization directly under the SPM tips 2local chemical modification of existing nanostructures through local electrochemical reaction 3 guided growth of polymeric nanostrucutres on surface patterns fabricated by SPM and other techniques 4 growth of nanowires from catalyst islands fabricated from SPM based deposition method and 5 discovery of strong visible light emission from sulfur doped ZnO nanowires. These achievements not only expanded the scope of SPM based lithographic techniques that can be used to fabricate nanoscaled electronic devices for DOD applications as originally discussed in the proposal, some of the discoveries can also contribute to the development basic science beyond the scope of the original proposal. One example is the strong light emission from ZnO nanowires that can lead to the development of future LED light sources with high energy efficiency, saving significant amount of energy used for lighting.
- Physical Chemistry
- Electrical and Electronic Equipment
- Electrooptical and Optoelectronic Devices