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Dip-Pen Lithography Using Pens of Different Thicknesses

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A laboratory method to produce AFM tips of different sizes has been developed based on laser irradiation of the commercial silicon nitride tips. A few shots of 60 mJ at 355 nm were found adequate to induce the desired bluntness from 40 nm to 500 nm in a controlled way. Dip-pen nanolithography (DPN) has been performed with the blunt tips using a colloidal ink consisting of Pd nanocrystals coated with polyvinyl pyrrolidone. The line patterns drawn bear a direct relation with the tip morphology, wider the tip, broader are the patterns, in general. The rate of deposition also increases with the tip dimension, but is not as much proportional for larger tips. The study highlights the potential ability of DPN in integrating nano and microelectronics.


Document Type: Research Article


Publication date: 2007-03-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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