A shear force feedback control system for near-field scanning optical microscopes without lock-in detection

1997 ◽  
Vol 68 (8) ◽  
pp. 3093-3095 ◽  
Author(s):  
J. W. P. Hsu ◽  
A. A. McDaniel ◽  
H. D. Hallen
Keyword(s):  
Control System ◽  
Feedback Control ◽  
Shear Force ◽  
Force Feedback ◽  
Near Field ◽  
Feedback Control System ◽  
Lock In ◽  
Near Field Scanning

scholarly journals Force Feedback Control System Dedicated for Robin Heart Surgical Robot

2016 ◽  
Vol 168 ◽  
pp. 185-188 ◽  
Author(s):  
Zbigniew Nawrat ◽  
Kamil Rohr ◽  
Péter Fürjes ◽  
Lukasz Mucha ◽  
Krzysztof Lis ◽  
...  
Keyword(s):  
Control System ◽  
Feedback Control ◽  
Force Feedback ◽  
Surgical Robot ◽  
Feedback Control System

Surface photoelectrochemistry using near-field scanning optical microscopy (NSOM)

1996 ◽  
Vol 54 ◽  
pp. 858-859
Author(s):  
Patrick J. Moyer
Keyword(s):  
Optical Microscopy ◽  
Spatial Resolution ◽  
Shear Force ◽  
Force Feedback ◽  
Near Field ◽  
Feedback Mechanism ◽  
Frequency Spectra ◽  
Water Resonance ◽  
Scanning Optical Microscopy ◽  
Near Field Scanning

Near-field scanning optical microscopy (NSOM) has been used to characterize and modify surfaces with lateral spatial resolution as high as 50 nm. Some of these experiments were performed under electrochemical conditions. Progress towards this goal involved several important steps. They include proving adequate operation of the shear force feedback mechanism in liquids and fabrication of appropriate NSOM fiber probes.With regards to shear force feedback, which is used to maintain the fiber probe within the near field of the sample, there has been ample discussion regarding the physics of the tip-sample interaction. It is important for biological and photoelectrochemical applications that the feedback mechanism operates successfully in liquid environments. Our results indicate that shear force operation in water allows for high spatial resolution NSOM characterization while providing high force sensitivity. When comparing the frequency spectra of the probe resonances in air and water, the water resonance is broadened. The broadened resonance peak when completely immersing the probe in water indicates an increase in damping.

A force-feedback control system for micro-assembly

2006 ◽  
Vol 16 (9) ◽  
pp. 1861-1868 ◽  
Author(s):  
Zhe Lu ◽  
Peter C Y Chen ◽  
Anand Ganapathy ◽  
Guoyong Zhao ◽  
Joohoo Nam ◽  
...  
Keyword(s):  
Control System ◽  
Feedback Control ◽  
Force Feedback ◽  
Feedback Control System ◽  
Micro Assembly
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