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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 20 of 30 for “"Particle manipulation"”.
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Particle manipulation with oscillatory non-linear microfluidics
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01
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Development of Electronic Systems for Ultrasonic Particle Manipulation
Demands to handle individual particles or particle agglomerates have been emerging in the fields of biology and chemistry, and particle trapping and manipulation with mechanical waves generated from ultrasound sources, known as “acoustic tweezing”, has gained great interest by researchers and been …
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Particle Manipulation Using Electric Field Gradients in Microdevices
… of effects that induces motion of a liquid or a particle within a liquid in response to an external electric field. Using the intrinsic electrical properties of bacteria and of breast cancer cells, electrokinetics can be used to manipulate these particles for two different types of applications: …
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Particle manipulation by hydrodynamic effects in vortical stokes flow
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Plasmonic nanoantennas for multipurpose particle manipulation and enhanced optical magnetism
Optical manipulation – using light to control matter – is based on the transfer of momentum from confined electromagnetic fields to micro- and nanoscale objects. Optical tweezers, based on the use of high-numerical aperture objective lenses, take advantage of this phenomenon to form non-contact …
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Flow and particle manipulation across flow regimes via shape modulation
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01
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Optical micro- and nanofibres: Higher mode generation and particle manipulation studies
… and evanescent field optical manipulation. Standard, commercial, single-mode silica fibre is used throughout most of the experiments; this generally produces high-quality, single-mode, micro- or nanofibres when tapered in a flame-heated, pulling rig in the laboratory. Single …
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Microbubble streaming flows for non-invasive particle manipulation and liquid mixing
… that in microbubble streaming flows, micro-particles (radius 1--5µm exhibit size-dependent behaviors: particles of different sizes follow different characteristic trajectories. Superimposing bubble streaming flow and a Poiseuille flow shapes the flow into regions of closed streamlines and …
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Exploiting the Interplay of Acoustic Waves and Fluid Motion for Particle Manipulation
… when handling small objects, e.g., cells, nanoparticles, C. elegans, and zebrafish larvae, the native environment involved is mainly liquid. During the acoustic propagation inside the liquid, fluid motion will also be initiated and will influence the object movement in addition to the acoustic …
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Particle manipulation by attractive and repulsive forces in 2-D streaming flows
… to study the variation in the trajectory of microparticles as they move in flows which are characterized by the superposition of microbubble streaming and transport flows. Our experimental setup uses steady streaming flow generated by ultrasonically driven semi-cylindrical microbubble combined …
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Direct Force Measurements on the Colloidal Scale: From Modified Electrodes to Particle Manipulation
… humidity. The adhesive behaviour of colloidal particles on modified electrodes has been studied by direct force measurements with a micrometre-sized silica probe attached to an AFM-cantilever. By controlling the external potential applied to the modified electrode by means of a potentiostat, …
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Particle Manipulation Via Optical Forces and Engineering Soft-Matter Systems With Tunable Nonlinearities.
… these optical forces, either by tailoring particle polarizability, and/or by structuring the incident light field. As a simple example, a tightly focused laser beam demonstrates strong gradient forces, which may attract and even trap particles with positive polarizability in the focal …
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Viscous streaming in 3D and its applications
Particle manipulation plays an important role in numerous fluidic devices involving tasks such as pumping, mixing, separation, sorting, transporting, among many others. When these devices are miniaturized to micro- and milli-meter scale, a second-order fluid effect—viscous streaming—becomes …
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On acoustic particle and cell manipulation in microfluidic systems
… fields offers new possibilities for advanced particle and cell manipulation in lab-on-a-chip applications as well as in relatively high throughput applications. Acoustic particle manipulation systems can be used e.g. to separate, wash, sort, trap or distribute particles in microfluidic …
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Microfluidic systems for cell transfection using sonoporation and electroporation
… standing waves, previously used for ultrasonic particle manipulation, have been used in the development of the sonoporation aspects of the system. MATLAB has also been used to analyse the required acoustic conditions within the chamber. Furthermore, the electroporation system makes use of a …
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Microfluidic processes to create structured microparticle arrangements and their applications
Multifunctional polymeric microparticles have shown the great potentials in a variety of fields. While the advance in particle synthesis allows for fine tuning of their physical properties and chemical functionality, particle manipulation is still appealing, but challenging issue in colloidal …
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Development of Ultrasonic Devices for Microparticle and Cell Manipulation
An emerging demand for the precise manipulation of cells and microparticles for applications in cell biology and analytical chemistry has driven recent development of ultrasonic manipulation technology. Compared to the other major technologies used for cell and particle manipulation, such as …
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Micron-bubble streaming flow towards micron to sub-micron sized sorting
… great potential in the applications of micro-particle manipulation (e.g. size dependent trapping, sorting, and focusing etc.). The main object of this thesis work is to extend towards much smaller sized particle sorting down to 1μm and sub-micron. On top of that, we want to further explore the …
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Characterization of the response of the hydrodynamic trap using a control-based approach
… trapping allows for the confinement and manipulation of small objects in free solution, away from solid boundaries and without the need for optical or magnetic fields. In order to achieve robust trapping over long time scales, it is imperative to evaluate trap performance using different …
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Increased Control over Gold Colloid Adsorption on Substrates for Colloid Displacement Lithography
… on optimizing the conditions for gold colloid particle adsorption for colloid displacement lithography, an expansion on gold colloid particle manipulation techniques using a scanned probe microscope. The system consists of a scrupulously cleaned glass surface that is coated with …
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