Sökning: "Acoustic streaming"
Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Acoustic streaming.
1. Acoustic Forces in Cytometry and Biomedical Applications: Multidimensional Acoustophoresis
Sammanfattning : Over the last decades the ongoing work in the fields of Lab-on-a-Chip and Micro-Total-Analysis-Systems has led to the discovery of new or improved ways to handle and analyse small volumes of biofluids and complex biosuspensions. The benefits of working on the microscale include: miniaturization of the analysis systems with less need for large sample volumes; temporal and spatial control of suspended particle/cell positions; low volume sheath flow lamination or mixing; novel separation techniques by using forces inherent to the microscale domain; precise regulation of sample temperatures and rapid analysis with less volumes needed to be processed. LÄS MER
2. On Health-Related Quality of Life and Diagnostic Improvements in Rhinosinusitis
Sammanfattning : Rhinosinusitis is defined as an inflammatory process involving the mucosa of the nose and one or more of the paranasal sinuses. The aims of the work presented in this thesis were to investigate the degree to which rhinosinusitis affects the health-related quality of life (HRQOL), and to determine whether the diagnosis of this condition can be improved using Doppler ultrasound. LÄS MER
3. Ultrasonic Fluid and Cell Manipulation
Sammanfattning : During the last decade, ultrasonic manipulation has matured into an important tool with a wide range of applications, from fundamental cell biological research to clinical and industrial implementations. The contactless nature of ultrasound makes it possible to manipulate living cells in a gentle way, e.g. LÄS MER
4. On microchannel acoustophoresis - Experimental considerations and life science applications
Sammanfattning : This thesis presents experimental studies of microchannel acoustophoresis, a technique for manipulation of microscopic objects in suspension by means of acoustic radiation forces induced by ultrasonic standing wave fields. By arranging an acoustic resonance across the width of a microchannel, the path of individual cells or microparticles can be deflected orthogonally to the fluid flow. LÄS MER
5. Characterization and Separation of Suspension Cells by Isoacoustic Focusing
Sammanfattning : Enabling techniques for separating target cells, such as subgroups of white blood cells and cancercells from blood and other body fluids, are necessary for lab work facilitation, inline integration withhigh-end bioanalytical instrumentation, and for point-of-care or home testing. The work of this thesisaddresses this need by further studying an equilibrium-based ultrasonic wave-based technology calledisoacoustic focusing to characterize and gain access to cells. LÄS MER