This paper reports quantitative topographical measurements using a heated atomic force microscope (AFM) cantilever probe. The study compares opographies measured by the cantilever thermal signal to topographies measured by the laser-deflection signal of an AFM system. The experiment sed 20 and 100 nm tall Si gratings as topographical test samples. The cantilever heater temperature ranged from 1...

This paper presents a tactile transducer device that is optimized from biomechanical data and has a compact, yet modular design. The tactile transducer comprises a 6 × 10 piezo bimorph actuator array with a spatial resolution of 1.8 × 1.2 millimeters and a wide temporal bandwidth. The actuator mounting method was improved from a conventional cantilever method to a dual-pinned method, giving the...

This paper focuses on the development of a complete model of an atomic force microscope (AFM) micro-cantilever beam, based on considering the effects of four major factors in modeling the cantilever. They are: rotary inertia and shear deformation of the beam and mass and rotary inertia of the tip. A method based on distributed-parameter modeling approach is proposed to solve the governing equat...

This study selected forty-two implants with full arch implantsupported fixed prostheses (with and without a cantilever) with at least five years' loading. Radiographic measurements were performed using Digimizer software (MedCalc Software, Belgium). Bone loss was measured on the distal side of the implant, from the surface of the platform to the edge of the bone crest, and the extent of the can...

one of the bio-sensing mechanisms is mechanical. rather than measuring shift in resonance frequency, we adopt to measure the change in spring constant due to adsorption, as one of the fundamental sensing mechanism. this study explains  determination of spring constant of a surface functionalized micro machined micro cantilever, which resonates in a trapezoidal cavity-on silicon wafer, with the ...

We present a novel ultrasensitive magnetometry technique using a micromachined magnetic cantilever that is brought in resonance. The induced magnetic moment generates a torque on the cantilever, thereby effectively stiffening the cantilever spring constant and changing its resonance frequency. Experiments are in good correspondence with the presented analytical model for this frequency shift, p...

In this paper, the most widely used mode of atomic force microscopy imaging where the cantilever is oscillated at its resonant frequency is studied. It is shown that the amplitude and the sine of the phase of the orbit vary linearly with respect to the cantilever-sample distance. Experiments conducted on a silicon cantilever agree with the theory developed.

An ac imaging mode for atomic force microscopy ~AFM! has been developed that employs a thermally driven bimetallic cantilever to sense surface topography. Oscillations are induced in a composite cantilever, comprising a Si3N4 layer and Au overcoat, by local heating with a resistive wire heater placed in close proximity to the cantilever. Cantilever bending occurs upon heating due to the differe...

We proposed the method of using a multi-ball-cantilever AFM for measuring the surface profile of soft thin film. At first, we performed the computer simulation to verify the feasibility of this method. Then, we developed the multi-ball-cantilever AFM system using a multi-ball-cantilever that had 8 cantilevers in 2 mm and each cantilever had the ball stylus with 10.9 μm of diameter. The fundamen...

Using scanning laser Doppler vibrometer we have identified sources of noise in contact mode high-speed atomic force microscope images and the cantilever dynamics that cause them. By analysing reconstructed animations of the entire cantilever passing over various surfaces, we identified higher eigenmode oscillations along the cantilever as the cause of the image artefacts. We demonstrate that t...