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Showing 1 to 13 of 13 for “"micro-cantilever"”.
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MEMS Piezoresistive Micro-Cantilever Arrays for Sensing Applications
… biomedical application. Among different options, cantilever micro-mechanical structures are one of the most promising technical solution for the realisation of MEMS detectors with high sensitivity. This thesis deals with the development of cantilever-based sensor arrays for chemical and biological …
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Single-cell mass measurements for drug susceptibility testing in cancer
Measuring the size distributions of micron-scale particles is of central importance in the biological sciences and for a wide range of industrial processes. The suspended microchannel resonator (SMR) is a sensor that measures the mass of individual micron-scale particles by detecting a shift in …
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Compact Trench-Based Silicon-on-Insulator Rib Waveguide 90-Degree and 105-Degree Bend and Splitter Design
… serve as building blocks of splitting network in micro-cantilever biosensing application. The main characteristic of trench based bend and splitter structures is their miniature size and their low radiation loss due to the strong light confinement in high index-contrast systems. Thus large scale, …
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Quantifying Dislocation Microstructures
… and full characterized a dislocation microstructure that formed during an in situ micro-cantilever beam experiment. Based on this information, we were then able to infer how the dislocations propagated from the notch into the specimen. We propose using the so-called …
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Piezoelectric Micro Power Generator (PMPG) : a MEMS-based energy scavenger
… with the characteristics of our Piezoelectric Micro Power Generator (PMPG). The PMPG is a MEMS-based energy scavenging device which converts ambient, vibrational energy into electrical energy. It consists of a composite micro-cantilever beam with a PZT piezoelectric thin film layer and a top, …
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Nanotechnology: a systems and control approach
… of materials at the nanoscale. The atomic force microscope (AFM), a micro-cantilever based device is one of the foremost tools in the interrogation and manipulation of matter at the atomic scale. The AFM operating in the most common tapping-mode has a highly complex dynamics due to the nonlinear …
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Electronic readout of microchannel resonators for precision mass sensing in solution by Rumi Chunara.
Microfabricated transducers have enabled new approaches for detection of biomolecules and cells. Integration of electronics with these tools simplify systems and provide platforms for robust use outside of the laboratory setting. Suspended microchannel resonators (SMRs) are sensitive microfluidic …
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The effects of dopants and complexions on grain boundary diffusion and fracture toughness in α-Al2O3
… strength. Scanning transmission electron microscopy based energy-dispersive spectroscopy and secondary ion mass spectrometry are utilized to characterize chemical diffusion profiles and quantify lattice and grain boundary diffusivity in Mg2+ and Si4+ doped alumina. It has found that Cr3+ …
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Design and Control of Versatile High-Speed and Large-Range Atomic Force Microscopes
Microscopy instruments are important in nano-technology research for imaging of nanoscale phenomena. Among such tools is the atomic force microscope (AFM) for nanoscale imaging and surface characterization. An AFM scans a micro-cantilever over the sample surface to measure various quantities from …
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Experimental investigations of the role of proximity approximation in near-field radiative transfer
… the enhanced near-field radiation between a micro-sphere and a plane substrate have been reported. To measure the radiative transfer, the magnitude of which can be less than 10 nW, the sensor of choice is the bi-material micro-cantilever. My thesis has focused on two aspects of near-field …
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Atomic force microscope cantilever with reduced second harmonic frequency during tip-surface contact
We describe an atomic force microscope cantilever design for which the second flexural mode frequency can be tailored relative to the first mode frequency, for operation in contact with a substrate. A freely-resonating paddle internal to the cantilever reduces the stiffness of the second flexural …