A Novel Feedback Scheme of Shear-force Control of Near-field Scanning Optical Microscope

Ki Hyun Kim, Sang-Ki Eah, Byung-ho Lee, Chang Ho Cho and Wonho Jhe, ”A Novel Feedback Scheme of Shear-force Control of Near-field Scanning Optical Microscope”, Rev. Sci. Instrum. 68 (7), 2783-2786 (1997)