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CPM Seminar
D. Stein
Division of Engineering and Applied Sciences We envision nanopores at the heart of a solid-state device capable of detecting, manipulating, and ultimately sequencing individual molecules of DNA. To reliably fabricate pores whose diameter is commensurate with that of the DNA molecule (~2nm), low energy ion beams are used to tailor the size of holes in solid-state membranes by a new technique we call ion beam sculpting". Feedback provides dimensional control on the single nanometre scale, as well as a means of studying the dynamics of matter under ion beam irradiation. The result was the discovery of a surprising new matter transport phenomenon, which is exploited in the fabrication of a single-molecule detector.
Thursday, August 23rd 2001, 15:30 |