Cantilever-based optical interfacial force microscope in liquid using an optical-fiber tip

Cantilever-Based Optical Interfacial Force Microscope in Liquid Using an Optical-Fiber Tip

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Cantilever-Based Optical Interfacial Force Microscopy

Simultaneous measurement of normal and friction forces using a cantilever-based optical interfacial force microscope.

We measured normal and friction forces simultaneously using a recently developed cantilever-based optical interfacial force microscope technique for studies of interfacial structures and mechanical properties of nanoscale materials. We derived how the forces can be incorporated into the detection signal using the classical Euler equation for beams. A lateral modulation with the amplitude of nan...

Microfluidic flow rate detection based on integrated optical fiber cantilever.

We demonstrate an integrated microfluidic flow sensor with ultra-wide dynamic range, suitable for high throughput applications such as flow cytometry and particle sorting/counting. A fiber-tip cantilever transduces flow rates to optical signal readout, and we demonstrate a dynamic range from 0 to 1500 microL min(-1) for operation in water. Fiber-optic sensor alignment is guided by preformed mic...

Scanned-cantilever atomic force microscope

We have developed a 3.6 pm scan range atomic force microscope that scans the cantilever instead of the sample, while the optical-lever detection apparatus remains stationary. The design permits simpler, more adaptable sample mounting, and generally improves ease of use. Software workarounds alleviate the minor effects of spurious signal variations that arise as a result of scanning the cantilev...