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 11 of 11 for “"Optical Force"”.
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A needle-tip embedded fibre optical force sensor for tissue identification
… approach to improve this situation is to attach optical sensors to the surgical needle. In this research, a temperature-compensated fibre optical tip force sensor based on the Fabry-Perot Interference (FPI) principle is developed and embedded into the tip of surgical needles. This was designed …
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TUNING AND OPTOMECHANICS OF COUPLED PHOTONIC CRYSTAL NANOBEAM CAVITIES
… tuning with NEMS actuators, investigation of optical gradient force and tunable cavity optomechanics. High efficiency resonance tuning by electrostatically shifting the coupled nanobeam cavities in the lateral direction has been achieved. Coupling strength tuning over wide range with high …
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Digital Holographic Microscopy for Measurement of Cellular Refractive Indices
Holography is an optical technique in which the wave nature of light is used to produce three-dimensional images of an object of interest. In addition to the flat 2D representation of a photograph, the holograph also records the depth of field by recording the phase of an incoming wave field. The …
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Development of Atomic Force Microscopy Modalities Using Dissipation Signal for Enhancing the Sensitivity of Photo-Induced Force Detection
… we focus on one tool in particular, the atomic force microscope (AFM). The AFM is highly versatile regarding the ability to implement many different characterization methods in ambient conditions, under vacuum, and liquid immersion conditions. Among these techniques exists spectroscopic scanning …
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Development of a light force accelerometer
In this work, the feasibility of a light force accelerometer was experimentally demonstrated. The light force accelerometer is an optical inertial sensor which uses focused laser light to levitate and trap glass microspheres as proof masses. Acceleration is measured by force rebalancing, which is …
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Nanophotonics for tailoring light-matter interaction/
… dielectric boundaries significantly enhances the optical response of nanoparticles. We propose an optimization-based theoretical approach to tailor the optical response of silver/silica multilayer nanospheres over the visible spectrum. We show that the structure that provides the largest …
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Directed transport without net bias in physics and biology
… subject to an alternating time-dependent force of zero mean, the average velocity of the particle is generally non-zero. Neither the potential nor the force would generate transport by themselves, but provided that the appropriate symmetries of the system are broken directed transport does …
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Directed transport without net bias in physics and biology
… subject to an alternating time-dependent force of zero mean, the average velocity of the particle is generally non-zero. Neither the potential nor the force would generate transport by themselves, but provided that the appropriate symmetries of the system are broken directed transport does …
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Conservation Laws and Electromagnetic Interactions
… effects that are based on nonconservative forces and act at the interface between dielectric media. Without structuring the light field, forward action is provided by the conventional radiation pressure while a backward movement can be achieved through the natural enhancement of linear …
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Veranschaulichung subzellulärer physikalischer Kräfte biochemischen und mechanischen Ursprungs mittels FRET
Das zelluläre Cytoskelett besteht aus Mikrofilamenten, intermediären Filamenten, Mikrotubuli und einer Reihe von weiteren Proteinen, die seine von dem Zelltyp und von der Zellumgebung abhängige Dynamik kontrollieren. Proteine, die der Rho GTPase Familie angehören, spielen hierbei eine wichtige …