Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Mass sensors"”.
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Development of high-Q micromechanical cell mass sensor (optimizing parameters for in-plane mass sensors)
… functionalities. Many MEMS-based resonant sensors have been extensively studied and used as biological and chemical sensors. However, previous works have shown that there are several technology limitations that inhibit application of various mass sensors to mass measurement and analysis, …
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Suspended microchannel resonators for biomolecular detection
… reducing reagent cost. Microfabricated resonant mass sensors are among the most sensitive devices for chemical detection, but degradation of the sensitivity in liquid has so far hindered their successful application in biology. This thesis introduces a type of resonant transducer that overcomes …
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Single-cell mass measurements for drug susceptibility testing in cancer
… resonator (SMR) is a sensor that measures the mass of individual micron-scale particles by detecting a shift in resonance frequency as particles flow through a hollow resonating micro-cantilever beam. While SMRs offer extreme precision for measuring mass, their applications have been limited by …
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MEMS MULTI-DOF WEAKLY COUPLED RESONATOR BASED ON MODE LOCALIZATION FOR MASS CHANGE SENSING APPLICATIONS
… the usage of nanoparticles as well quantified mass changes is described. The mass sensitivity of the coupled resonator can be characterized accordingly. It has been demonstrated that a) the resonance amplitude ratio yields a sensitivity to mass changes around two times larger than amplitude …
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Development and implementation of a microresonator impactor for atmospheric particulate sensing
… to human health) or to measure particle mass directly (the standard metric for air quality). The growing field of microelectromechanical systems (MEMS) offers a potential alternative by implementing microresonators as mass sensors. MEMS resonators have high mass sensitivities and have …
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Accurate Continuum Theories For Condensed Matter Systems
… also explore the possibility of carbon nanotube mass sensors with single yoctogram precision.
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A toolset for linking phenotype and gene expression at the single-cell level
… (SMR) - high resolution single-cell buoyant mass sensors - in combination with an automated method of isolating single cells to conduct scRNA-seq downstream. Using this platform, we were able to collect linked transcriptional and biophysical measurements for a murine leukemia cell line, …
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Thermally Actuated Resonant Silicon Crystal Nanobalances
… for next generation integrated resonant sensors and frequency references as well as electronic filters, micro-electro-mechanical resonators have attracted a lot of attention over the past decade. As a result, a wide variety of high frequency micro/nanoscale electromechanical resonators …
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Design and Implementation of Mode Localised Resonant MEMS Oscillators for Gravimetric Sensing
… have had a significant impact on the field of sensors and sensor systems. This thesis investigates the potential of mode localisation in MEMS devices for sensing ultrafine particles as an approach towards future sensor technologies for gravimetric sensing that could eventually be deployed as …
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Intentional nonlinearity in the small scale with applications to atomic force microscopy (AFM) and mass sensing
… particular, I focus on applications to AFM and mass sensing. Within the area of AFM, the performance of a new cantilever design during multi-frequency tapping mode AFM is studied. The system consists of a base cantilever with an inner paddle which, under harmonic excitation, vibrates like a …