A method of forming a nano-scale device with a probe (2) such as a STM on a substrate (1) includes the step of rendering the relevant part of the substrate conductive while the device (5) is being formed with the probe so that current can flow from the probe to the substrate. Thereafter, to operate the...http://www.google.com.hk/patents/US5365073?utm_source=gb-gplus-share專利 US5365073 - Nanofabricated structures