This paper discusses several methods for manufacturing ultra-sharp probes, with applications geared toward, but not limited to, scanning microscopy (STM, AFM) and intra-cellular recordings of neural signals. We present recipes for making tungsten, platinum/iridium alloy, and nanotube fibril tips. Electrical isolation methods using Parylene-C or PMMA are described.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3338587PMC
http://dx.doi.org/10.1063/1.3702802DOI Listing

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