نتایج جستجو برای: cantilevers

تعداد نتایج: 1221  

Journal: :Lab on a chip 2008
Kidong Park Jaesung Jang Daniel Irimia Jennifer Sturgis James Lee J Paul Robinson Mehmet Toner Rashid Bashir

The size of a cell is a fundamental physiological property and is closely regulated by various environmental and genetic factors. Optical or confocal microscopy can be used to measure the dimensions of adherent cells, and Coulter counter or flow cytometry (forward scattering light intensity) can be used to estimate the volume of single cells in a flow. Although these methods could be used to ob...

2016
Maja ĐUKIĆ PJANIĆ Guy Kawasaki Zoran Djuric

Atomic force microscope (AFM) is a tool that allows micro and nano scale imaging of samples ranging from solid state physics to biology. AFM uses mechanical forces to sense the sample and recreate a topography image with high spatial resolution. The biggest disadvantage of the standard AFMs is their scanning speed, as it typically takes up to several tens of minutes to capture an image. A lot o...

2002
R. A. Buser

Scanning tunneling microscopes (STMs) and atomic force microscopes (AFMs), known under the expression scanning probe microscope (SPM), are well established methods to analyze surfaces, and the principle of their operation is published widely [1-3]. In AFM a point probe reacts mechanically on interatomic forces of the sample and generates a topographic view of the surface with an atomic resoluti...

Journal: :Physics of Fluids 2021

In this study, we explore the vibration damping characteristics of singular liquid drops varying viscosity and surface tension resting on a millimetric cantilever. Cantilevers are displaced 0.6 mm at their free end, 6% length, allowed to vibrate freely. Such ringdown causes deform, or slosh, which dissipates kinetic energy via viscous dissipation within drop through contact line friction. Dampi...

Journal: :IEEE Sensors Journal 2022

Structural engineering plays an essential role in designing, improving, and optimizing electromechanical system, instinctively affecting its performance. In this study, design optimization, finite element analysis, experimental evaluation of capacitive pressure sensors were conducted. The air sensing application was demonstrated to characterize different sensors, which include a combination mul...

2008
T. C. Parker F. Tang G.-C. Wang T.-M. Lu

We investigated the use of the non-contact atomic force microscopy (NCAFM) technique for evaluating high frequency mechanical vibrations. We demonstrated a clear resonance frequency (fres) of ∼11.8MHz measured from a 0.25 cm2 piece Si placed on top of a driven PZT and probed by an AFM cantilever.We also showed that the probe cantilever in the NCAFM was able to follow the envelope of a Si on PZT...

Journal: :Nanotechnology 2009
Hui Xie Dogan Sinan Haliyo Stéphane Régnier

A conventional atomic force microscope (AFM) has been successfully applied to manipulating nanoparticles (zero-dimensional), nanowires (one-dimensional) or nanotubes (one- or two-dimensional) by widely used pushing or pulling operations on a single surface. However, pick-and-place nanomanipulation in air is still a challenge. In this research, a modified AFM, called a three-dimensional (3D) man...

2001
M Maaloum

Knowledge of the interaction forces between surfaces gained using an atomic force microscope (AFM) is crucial in a variety of industrial and scientific applications and necessitates a precise knowledge of the cantilever spring constant. Many methods have been devised to experimentally determine the spring constants of AFM cantilevers. The thermal fluctuation method is elegant but requires a the...

Journal: :Nature communications 2014
Y Tao J M Boss B A Moores C L Degen

Diamond has gained a reputation as a uniquely versatile material, yet one that is intricate to grow and process. Resonating nanostructures made of single-crystal diamond are expected to possess excellent mechanical properties, including high-quality factors and low dissipation. Here we demonstrate batch fabrication and mechanical measurements of single-crystal diamond cantilevers with thickness...

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