Shear Force Detection Using Single-Tine Oscillating Tuning Fork for Scanning Near-Field Optical Microscopy
TAN Xiao-Jing1, SUN Jia-Lin1, LIU Sheng1, GUO Ji-Hua1, SUN Hong-San2
1Key Laboratory of Atomic and Molecular Nanosciences of Education Ministry and Department of Physics, Tsinghua University, Beijing 100084
2CAAD Laboratory, Tsinghua University, Beijing 100084
Shear Force Detection Using Single-Tine Oscillating Tuning Fork for Scanning Near-Field Optical Microscopy
TAN Xiao-Jing1;SUN Jia-Lin1;LIU Sheng1;GUO Ji-Hua1;SUN Hong-San2
1Key Laboratory of Atomic and Molecular Nanosciences of Education Ministry and Department of Physics, Tsinghua University, Beijing 100084
2CAAD Laboratory, Tsinghua University, Beijing 100084
Abstract： We propose a new method to detect near-field by using a single-tine oscillating tuning fork with mechanically asymmetric excitation that exhibits the sensitivity and stability better than that by using a double-tine oscillating one. Comparison of shear forces for the two methods demonstrate that the single-tine oscillating tuning fork provides a simpler and more sensitive method for near-field measurements. A theoretical analysis is presented for explanation to the greater sensitivity. The method is demonstrated by imaging a sparse-packed layer of micro-spheres in size of 200 nm.
TAN Xiao-Jing;SUN Jia-Lin;LIU Sheng;GUO Ji-Hua;SUN Hong-San. Shear Force Detection Using Single-Tine Oscillating Tuning Fork for Scanning Near-Field Optical Microscopy[J]. 中国物理快报, 2003, 20(3): 338-341.
TAN Xiao-Jing, SUN Jia-Lin, LIU Sheng, GUO Ji-Hua, SUN Hong-San. Shear Force Detection Using Single-Tine Oscillating Tuning Fork for Scanning Near-Field Optical Microscopy. Chin. Phys. Lett., 2003, 20(3): 338-341.
2003, Vol. 20 
