Now showing items 95-114 of 242

    Large-scale imaging of optical antennas and single molecules 

    Saemisch, Lisa (Date of defense: 2021-04-15)

    The interaction of light and matter is of crucial importance in fundamental science as well as in high-end technology. Ultimately, this concerns the interaction between a photon and a single quantum system, e.g. the ...

    Laser-induced electron interferences from atoms and molecules 

    Sánchez, Aurelien (Date of defense: 2022-07-25)

    Since discovering wave-particle duality, science has changed our perception of light and matter, especially at the subatomic level. Thanks to such discoveries, we have been able to develop and expand our scientific knowledge ...

    Lens-free interferometric microscope for transparent materials 

    Terborg, Roland A. (Date of defense: 2018-10-19)

    As health systems fight against epidemics and infectious diseases, new forms of diagnostics need to be developed in order to meet the growing demand for services, often in locations without the necessary infrastructure. ...

    Levitation and control of particles with internal degrees of freedom 

    Planes Conangla, Gerard (Date of defense: 2020-06-30)

    Levitodynamics is a fast growing field that studies the levitation and manipulation of micro- and nanoobjects, fuelled by both fundamental physics questions and technological applications. Due to the isolated nature of ...

    Levitodynamics on-a-chip: from planar Paul traps to near-field optical nanocavities 

    Alda, Irene (Date of defense: 2020-07-09)

    The field of levitation optomechanics---or levitodynamics---studies the manipulation and control of small trapped objects in an isolated environment, providing a gateway to answer fundamental questions in physics and ...

    Levitodynamics toward force nano-sensors in vacuum 

    Ricci, Francesco, 1987- (Date of defense: 2019-02-22)

    Levitodynamics addresses the levitation and manipulation of micro- and nanoresonators with the purpose of studying their dynamics. This emerging field has attracted much attention over the last few years owing to unprecedented ...

    Light absorption and ergodicity in systems that transform light into other forms of energy 

    Ferreira, Catarina Gonçalves (Date of defense: 2023-09-27)

    (English) To mitigate the present environmental crisis, caused by the excessive use of fossil fuels and associated release of carbon dioxide into the atmosphere, it is necessary to significantly reduce worldwide energy ...

    Light enhancements in nano-structured solar cells 

    Pastorelli, Francesco (Date of defense: 2013-12-09)

    In this century some of our main issues are energy shortage and pollution. This work will briefly describe these problems, proposing a plan of action combining energy saving and different sustainable energy sources. Within ...

    Light generation and manipulation from nonlinear randomly distributed domains in SBN 

    Yao, Can (Date of defense: 2014-06-25)

    Disordered media with refractive index variations can be found in the atmosphere, the ocean, and in many materials or biological tissues. Several technologies that make use of such random media, as image formation, satellite ...

    Light harvesting and energy efficiency in perovskite solar cells and their applications 

    Martínez-Denegrí Sánchez, Guillermo (Date of defense: 2021-09-29)

    The environmental issues associated with the use of conventional fuels necessitates the utilisation of renewable energy sources, as well as the implementation of energy efficient designs, in order to decrease electricity ...

    Light harvesting in fiber array organic solar cells 

    Mariano Juste, Marina (Date of defense: 2014-10-31)

    Considering that the most abundant renewable energy source is the Sun, photovoltaic technology possesses one of the highest potentials to provide environmental benign and sustainable energy worldwide. Currently, most of ...

    Light-matter interaction with atomic ensembles 

    Dubost, Brice (Date of defense: 2012-11-26)

    (English) The study of quantum light-matter interaction with atomic ensembles is an active research area. This kind of system allows fundamental studies on measurement in the context of continuous variables, in collective ...

    Local temperature and correlations in quantum many-body systems 

    Hernández Santana, Senaida (Date of defense: 2019-04-12)

    Quantum Mechanics was established as the theory of the microscopic world, which allowed to understand processes in atoms and molecules. Its emergence led to a new scientific paradigm that quickly spread to different research ...

    Localized surface plasmon resonance for biosensing lab-on-a-chip applications 

    Acomovic, Srdjan S. (Date of defense: 2012-10-30)

    In recent times, metallic nanoparticle plasmonics coupled with applications towards biosensing has gathered momentum to the point where commercial R&D are investing large resources in developing the so-called localized ...

    Machine learning for quantum physics and quantum physics for machine learning 

    Huembeli, Patrick (Date of defense: 2021-03-25)

    Research at the intersection of machine learning (ML) and quantum physics is a recent growing field due to the enormous expectations and the success of both fields. ML is arguably one of the most promising technologies ...

    Mass sensing with graphene and carbon nanotube mechanical resonators 

    Schwender, Jill (Date of defense: 2018-11-12)

    In recent years, carbon nanotube and graphene mechanical resonators have attracted considerable attention because of their unique properties. Their high resonance frequencies, high quality factors and their ultra-low mass ...

    Mechanisms and functions of the nucleus as a mechano-controller of cell contractility and migration plasticity 

    Venturini, Valeria (Date of defense: 2022-04-08)

    Living tissues are crowded and dynamic environments, in which signalling molecules and physical forces constantly act on single cells. To ensure correct tissue development and homeostasis, cells function like small processors: ...

    Mechanochemical study of single living cells and biomolecules combining optical tweezers and raman spectroscopy 

    Raj, Saurabh (Date of defense: 2012-11-05)

    This thesis is devoted to the study of mechanochemistry of single cells and single biomolecules. Mechanochemistry relates to the association of mechanical and chemical occurrence at the molecular level. Using a combination ...

    Membrane protein nanoclustering as a functional unit of immune cells : from nanoscopy to single molecule dynamics 

    Torreño Piña, Juan Andrés (Date of defense: 2015-10-02)

    State-of-the-art biophysical techniques featuring high temporal and spatial resolution have allowed for the first time the direct visualization of individual transmembrane proteins on the cell membrane. These techniques ...

    Micro-nano structured electro-optic devices in LiNbO3 for communication and sensing 

    Tulli, Domenico (Date of defense: 2012-02-20)

    A material that is enabling integrated optics is the ferroelectric crystal Lithium Niobate (LiNbO3), which has excellent electro-optical, acousto-optical and nonlinear optical properties. Moreover, it can be doped with ...