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Now showing items 40891-40910 of 42573
Ultra-low power circuits based on tunnel FETs for energy harvesting applications
There has been a tremendous evolution in integrated circuit technology in the past decades. With the scaling of complementary metal-oxide-semiconductor (CMOS) transistors, faster, less power consuming and more complex chips ...
Ultracold atoms carrying orbital angular momentum
A causa de la gran flexibilitat que ofereixen en la seva manipulació i control, els sistemes d’àtoms ultrafreds són ideals per simular un ampli ventall de models de matèria condensada i constitueixen una plataforma molt ...
Ultracold atoms in artificial gauge fields
The present thesis studies a variety of cold atomic systems in artificial gauge fields. In the first part we focus on fractional quantum Hall effects, asking whether interesting topological states can be realized with cold ...
Ultracold atoms in coupled ring potentials and flat-band lattices
Els àtoms ultrafreds són una excel·lent plataforma per a l'estudi de fases fortament correlacionades, fases topològiques, termalització quàntica i per a la implementació de tecnologies quàntiques, a causa del seu alt nivell ...
Ultracold atoms in optical lattices with long-range interactions and periodic driving
This thesis contains theoretical research on ultracold quantum gases in spatially periodic potentials, featuring high-frequency periodic driving, long-range interactions, or both. The largest part features deep potentials ...
Ultracold Bose and Fermi dipolar gases : a quantum Monte Carlo study
The object of study of this thesis are dipolar systems in the quantum degenerate regime. In general, dealing with many-body systems and evaluating their properties requires to deal with the the Schrödinger equation. In the ...
Ultracold dipolar gases in optical lattices
Esta tesis es un trabajo teórico, en el que estudiamos la física de los átomos dipolares bosónicos ultrafríos en retículos ópticos. Éstos gases consisten de átomos o moléculas bosónicas, enfriados bajo la temperatura de ...
Ultrafast carrier and structural dynamics in graphite detected via attosecond soft X-ray absorption spectroscopy
Understanding most of the physical and chemical phenomena determining the world around us requires the possibility to interrogate their main characters on their natural scale in space and time. The insulating or conductive ...
Ultrafast electrohydrodynamic 3D printing with submicrometer resolution
Les tecnologies de fabricació additiva (FA) per deposició capa-a-capa de material expel·lit des d’un broquet aporten una versatilitat excepcional, però estan limitades en termes de velocitat d’impressió i resolució. L’emissió ...
Ultrafast optical parametric oscillators : novel systems, techniques, and concepts
In this thesis, we have demonstrated various ultrafast optical parametric oscillators (OPOs) based on different nonlinear media. The thesis consists of OPO systems, novel techniques, designs, and concepts that has facilitated ...
Ultrafast optoelectronics in 2D materials and their heterostructures
Understanding and improving how light is converted into electricity in materials is one of the central goals in the field of optoelectronics. This basic physical process lies at the heart of several major technologies, ...
Ultrafast quantum control of atoms and molecules : a density matrix approach
Control is important for transferring theoretical scientific knowledge into practical technology for applications in numerous fields. This is why coherent control study is significant on every timescale to have a complete ...
Ultraindividualismo y Simulacro en el Nuevo Orden Mundial: Reflexiones sobre la sujeción y la subjetividad
La presente tesis es una investigación teórica que propone una serie de conceptos para el abordaje de la relación entre poder y subjetividad en el contexto actual. Se parte de la descripción de dicho contexto, caracterizado ...
Ultrasensitive detection of pathogens in real-time. Potentiometric biosensors based on single-walled carbon nanotubes and aptamers
Un gran nombre de plataformes de detecció biològica han incorporat materials nanoestructurats com una estratègia per a millorar diversos paràmetres operacionals i de qualitat tals com reduir els temps d'anàlisis i els ...
Ultrashort laser pulse measurement for multiphoton microscopy
In this thesis, we address specific efforts towards developing the precise aspect of ultrashort laser pulse measurement in the context of biomedical research. The motivation for pursuing these new developments was triggered ...
Ultrasonic nodal point: a new configuration for ultrasonic moulding. Advances towards the complete industrialisation of the technology
(English) Ultrasonic moulding is a promising technology that could be used as a substitute for conventional injection moulding techniques. This relatively new technology has a lower energy consumption, and it could be a ...
Ultrasound micromolding technique and real-time X-ray diffraction using synchrotron radiation : applications to porous scaffolds for biomedical devices and study of thermal-induced transitions
Current market trend is moving to miniaturized specimens, especially in the biomedical field seeking high effective and less invasive treatrnent. Ultrasound (US) micromolding is a new technique developed to the aim of ...
Ultrasound technology as a strategy for enhancing the content and the bioaccessibility of phenolic compounds in apple and apple-based products
En els darrers anys, les tecnologies innovadores de processament estan en auge per aconseguir productes saludables i d'alta qualitat, per tal de satisfer la demanda dels consumidors. En aquesta Tesi Doctoral s'investiga ...
Ultrasound-assisted liquefaction of honey
Crystallization of honey is a common process of the honey industry. Liquid honey is preferred by most of the consumers and by food companies for ease of handling. Honey is commonly heated during pasteurization in order to ...
Ultrastructural analysis of odontocete cochlea
The morphological study of the Odontocete organ of Corti including possible pathological features resulting from sound over-exposure, represent a key conservation issue to assess the effects of acoustic pollution on marine ...
