Now showing items 64-83 of 242

    Fluorescence quantum yield and the open circuit voltage in perovskite solar cells 

    Kramarenko, Mariia (Date of defense: 2023-03-24)

    (English) To mitigate the energy and climate crisis we are already facing and address the increasing energy consumption, it is essential to foster energy transition strategies. The energy transition success largely depends ...

    From cells to tissues, microscopy to modeling: towards precise, data-driven photothermal therapy with gold nanorods 

    Morales Dalmau, Jordi (Date of defense: 2019-02-15)

    Suspensions of gold nanorods (GNRs) are emerging as potential drugs to address some of the limitations in traditional biomedical sensing,imaging and therapy. They are inorganic nanoparticles with good biocompatibility, ...

    From quantum foundations to quantum information protocols and back 

    Torre Carazo, Gonzalo de la (Date of defense: 2015-09-23)

    Physics has two main ambitions: to predict and to understand. Indeed, physics aims for the prediction of all natural phenomena. Prediction entails modeling the correlation between an action, the input, and what is subsequently ...

    Further into the infrared with quantum dot photodetectors 

    Özdemir, Onur (Date of defense: 2022-02-04)

    In the infrared, photodetectors are the key components in a wide-variety of applications such as thermal imaging, remote sensing, spectroscopy with newer technologies added to the list such as LiDaR and deep tissue imaging. ...

    Generation of intense few-cycle phase-stable electric fields: from the mid-IR to soft X-rays 

    Silva, Francisco José Maia da (Date of defense: 2016-02-29)

    Devising new tools that expand our capabilities to sense and manipulate the world enables much of the scientific and technological progress around us. For example, light is increasingly more important as a tool for humanity. ...

    Generation of macroscopic spin singlets in cold atomic ensembles 

    Behbood, Naeimeh (Date of defense: 2015-04-17)

    (English) This thesis describes the generation of macroscopic spin singlets in a cold atomic ensemble by performing quantum non-demolition measurement. Toward this goal we have implemented a realtime shot-nose limited ...

    Graphene based optical interconnects and IR photodetectors 

    Agarwal, Hitesh (Date of defense: 2023-01-23)

    (English) Despite the extensive research in the semiconductor industry, Moore’s law is finally slowing down due to increased complexity. Hence, intense efforts are being carried out to explore hybrid solutions by adding ...

    Graphene mechanical resonators coupled to superconducting microwave cavities 

    Weber, Peter (Date of defense: 2016-12-02)

    In recent years, mechanical resonators based on graphene have attracted considerable interest as nanoelectromechanical systems (NEMS). Graphene NEMSs allow for exceptional properties such as high mechanical strength, high ...

    Graphene optoelectronics from the visible to the mid-infrared 

    Badioli, Michela (Date of defense: 2015-12-04)

    Since its discovery in 2004, graphene, a one-atom-thick layer of carbon atoms arranged in a hexagonal lattice, has attracted huge interest from the scientific community due to its extraordinary electronic, mechanical, and ...

    High power, high intensity few-cycle pulses in the mid-IR for strong-field experiments 

    Baudisch, Matthias (Date of defense: 2017-07-12)

    High-energy, few-cycle, mid-lR radiation sources featuring high pulse repetition rates are of tremendous interest for a variety of strong-field physics and attoscience applications. Such systems could be used in combination ...

    High-peak-power mid-infrared OPCPAs for extreme nonlinear photonics 

    Elu Etxano, Ugaitz (Date of defense: 2022-05-03)

    In the last decades, intense carrier-envelope-phase-stable (CEP-stable) and near-single-cycle, coherent mid-infrared sources have become charming for a variety of applications in physics, chemistry and biology. In particular, ...

    High-power fiber-laser-pumped picosecond nonlinear optical sources from the near- to mid-infrared 

    Parsa, Shahrzad (Date of defense: 2018-07-24)

    Ultrafast picosecond coherent sources in the near-to-mid-infrared (IR) spectral range are of great interest for a variety of applications such as pump-probe spectroscopy, remote sensing, photobiology and novel upconversion ...

    High-power, continuous-wave optical parametric oscillators from visible to near-infrared 

    Samanta, Goutam Kumar (Date of defense: 2009-07-01)

    This thesis presents the development of a new class of high-power, continuous-wave (cw) optical parametric oscillators (OPOs) with extended tunability from visible to near-infrared (near-IR). While lasers have been in use ...

    High-power, fiber-laser-pumped frequency conversion sources for the ultraviolet 

    Sánchez Bautista, Enrique (Date of defense: 2015-11-26)

    High-power, stable, high-repetition-rate, picosecond ultraviolet (UV) sources are of crucial importance for a variety of applications, such as atmospheric sensing, spectroscopy or optical data storage. Further, precise ...

    High-power, fiber-laser-pumped optical parametric oscillators from the visible to mid-infrared 

    Chaitanya Kumar, Suddapalli (Date of defense: 2012-01-18)

    High-power, continuous-wave (cw), mid-infrared (mid-IR) laser sources are of interest for variety of applications such as trace gas detection and remote sensing, which require broad spectral coverage to address the most ...

    Highly percolated ultra-thin metal films for reconfigurable metasurfaces 

    Martínez Cercós, Daniel (Date of defense: 2023-06-21)

    (English) There is currently significant scientific and technological interest in ultrathin materials, with at least one dimension in the nm range or even smaller, since they possess features not achievable with their ...

    Hybrid diffuse optical neuromonitoring of cerebral haemodynamics: from the smallest premature born infants to adults 

    Giovannella, Martina (Date of defense: 2019-06-04)

    Hybrid diffuse optical devices allows for the non-invasive and continuous monitoring of the cerebral haemodynamics and metabolism. Such devices can be portable and are relatively inexpensive, therefore available at the ...

    Hybrid diffuse optics for monitoring of tissue hemodynamics with applications in oncology 

    Farzam, Parisa (Date of defense: 2014-10-14)

    Noninvasive measurement of hemodynamics at the microvascular level may have a great impact on oncology in clinics for diagnosis, therapy planning and monitoring, and, in preclinical studies. To this end, diffuse optics is ...

    Hybrid diffuse optics for translational oncology and nanobiophotonics: towards a theranostic approach for emerging cancer therapies 

    Mireles Núñez, Miguel Adrián (Date of defense: 2018-10-24)

    A pre-clinical mouse model of human clear cell renal cell carcinoma (ccRCC) was employed as a method to study the prognostic and theranostic potential of two, non-invasive, deep tissue, diffuse optical techniques, namely ...

    Hybrid photonic-plasmonic devices with single nanoscale light sources 

    Bermúdez Ureña, Esteban (Date of defense: 2017-07-17)

    The field of photonics comprehends the generation, manipulation and detection of light (photons). Over the past decades, it has underpinned many of the technological advances upon which we rely on a daily basis, from our ...