IJSRP, Volume 10, Issue 5, May 2020 Edition [ISSN 2250-3153]
Ashfaq Ali, Naveed Ullah
Abstract:
One of the great challenges of Scanning Tunneling Microscopy (STM) is the production of atomically sharp tips. Tungsten tips in Scanning Probe Microscope (SPM) and Atomic Force Microscope (AFM) are used instead of platinum and iridium (Pt/Ir) tips due to their high quality factor, mechanical stability and produced at low cost.