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 8 of 8 for “"Mass Sensing"”.
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Electronic readout of microchannel resonators for precision mass sensing in solution by Rumi Chunara.
… platforms used to precisely measure the buoyant mass of single cells and monolayers of protein in fluid environments. Conventionally, micro cantilever deflection is measured by the optical-lever technique, wherein a laser beam is reflected off the cantilever onto a position sensitive photodiode. …
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Intentional nonlinearity in the small scale with applications to atomic force microscopy (AFM) and mass sensing
… including biological, chemical and inertial sensing; atomic force microscopy and infrared spectroscopy; and precise time keeping and synchronization. Traditionally, these systems were studied within the framework of linear dynamics, and incidental nonlinearity was suppressed by design. More …
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Thermally Actuated Resonant Silicon Crystal Nanobalances
… low-cost highly integrated and ultra-sensitive mass sensors, can potentially provide new opportunities and unprecedented capabilities in the area of mass sensing. Such devices can provide orders of magnitude higher mass sensitivity and resolution compared to Film Bulk Acoustic resonators (FBAR) …
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MICROMANIPULATOR-RESONATOR SYSTEM FOR SELECTIVE WEIGHING OF INDIVIDUAL MICROPARTICLES
… is to exploit the cantilever-based sensors' mass sensing capability to develop a "supermarket weight scale" for the micro world: a scheme that can enable the user to pick an individual target entity and weigh only that particular entity by precisely positioning it on a micro- weight scale.
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Detection of mass, growth rate, and stiffness of single breast cancer cells using micromechanical sensors
… is a vital element of the cell cycle, and cell mass homeostasis ensures that the cell mass and cell cycle transitions are coordinately linked. An accurate measurement of growth throughout the cell cycle is fundamental to understanding mechanisms of cellular proliferation in cancer. Growth can be …
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Modeling and control of quartz crystal operated in liquid for bio-sensing application
… Microbalance (QCM). The QCM is a piezoelectric mass-sensing device. A QCM device works by sending an electrical signal through a gold-plated quartz crystal, which causes a vibration at some resonant frequency. The QCM then measures the frequency of oscillation in the crystal. When used as a …
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MEMS Biosensor for Water-Immersed Application
<p>Although many air-based sensing mechanisms exist, not all of them can be applied in the water-based environment. In order to obtain a cell-based biosensor, the sensing method needs to be reliable and repeatable in a liquid environment. Therefore, this study is focused on transforming existing …
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High precision electrohydrodynamic printing of polymer onto microcantilever sensors
… shift of 50 - 4130 Hz corresponded to a polymer mass of 4.5 - 135 pg. The electrohydrodynamic method is a precise way to deposit multiple materials onto micromechanical sensors with greater resolution and repeatability than current methods.