Browsing by Subject "Espectroscopis"
Now showing items 1-13 of 13
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Attosecond x - ray transient dynamics
(Universitat Politècnica de Catalunya, 2017-09-08)
Master thesis
Open Access -
Diffuse reflectance spectroscopy characterization of molecular absorption via graphene based photodetectors
(Universitat Politècnica de Catalunya, 2018-09)
Master thesis
60 months embargoThis Master dissertation explores diffuse reflection spectroscopy as a viable tool for analytical chemistry, both quantitatively and qualitatively. In-vitro optical phantoms are created to mimic the turbid diffuse environments ... -
Harmonic impedance spectra identification from time-varying bioimpedance : Theory and validation
(IOP PUBLISHING LTD, 2013-10)
Article
Restricted access - publisher's policyThe harmonic impedance spectra (HIS) of a time-varying bioimpedance Z(ω, t ) is a new tool to better understand and describe complex time-varying biological systems with a distinctive periodic character as, for ... -
Hopping conductivity and polarization effects in a fullerene derivative salt
(2014-06-12)
Article
Restricted access - publisher's policyImpedance spectroscopy is employed to probe the frequency-dependent conductivity and dielectric response of the C60O24Na 24 fulleride. The conduction properties of this organic material match the so-called universal behavior ... -
In vivo electrical bioimpedance characterization of human lung tissue during the bronchoscopy procedure. A feasibility study
(2013-07)
Article
Restricted access - publisher's policyLung biopsies form the basis for the diagnosis of lung cancer. However, in a significant number of cases bronchoscopic lung biopsies fail to provide useful information, especially in diffuse lung disease, so more aggressive ... -
Live monitoring of heart rate and blood oxygenation trend using non-contact IPPG
(Universitat Politècnica de Catalunya, 2018-07-20)
Master thesis
Restricted access - confidentiality agreement -
Minimal implementation of an AFE4300-based spectrometer for electrical impedance spectroscopy measurements
(IOPScience, 2013)
Conference report
Open AccessThe AFE4300 is a new low-cost on-chip impedance spectrometer developed by Texas Instruments able to handle multiple four electrode interface measurements. In this work, we present a brief description and characterization ... -
Narrowband filtering for atom-resonant photon pair generation
(Universitat Politècnica de Catalunya, 2017-10-27)
Master thesis
Open AccessIn this master's thesis we study two filtering techniques, first the Faraday anomalous dispersion optical filter (FADOF) and second a monolithic Fabry-Pérot interferometer with the aim of filtering down-converted photon ... -
Spectroscopic characterization of Er3+, Yb3+ co-doped UC single crystals : the influence of host and sensitizer concentrations
(Universitat Politècnica de Catalunya, 2018-10-24)
Master thesis
Open Access
Covenantee: Bundesanstalt für Materialforschung und -prüfungThe energy transfer upconversion (ETU) mechanism is known to be the most efficient route for the conversion of near infrared (NIR) light to visible emission in Ln3+-co-doped systems. In this work, we examined these energy ... -
Terahertz spectroscopy in medical and nutritional applications
(Universitat Politècnica de Catalunya, 2010-10-27)
Master thesis
Open AccessEnglish: THz spectroscopy has recently emerged as a novel technology with several advantages with respect to other spectroscopic techniques, such as real–time data acquisition and non–destructive, non–invasive detection ... -
Towards an accurate bioimpedance identification
(IOPScience, 2013)
Conference report
Open AccessThis paper describes the local polynomial method (LPM) for estimating the time- invariant bioimpedance frequency response function (FRF) considering both the output-error (OE) and the errors-in-variables (EIV) identi ... -
Towards cavity enhanced detection of single ions in the solid-state
(Universitat Politècnica de Catalunya, 2018-09-06)
Master thesis
Open AccessThe goal of this master thesis was to take initial steps towards cavity-enhanced detection of single rare-earth ions in the solid state. A fibre microcavity set-up for use with Praseodymium-doped nanocrystals was designed, ... -
Water-Triggered Conduction Mediated by Proton Exchange in a Hygroscopic Fulleride and Its Hydrate
(2015-01-08)
Article
Open AccessImpedance spectroscopy is employed to probe the impact of water on the dc conductivity and ac dielectric response of the polycrystalline C-60(ONa)(24) fulleride, both in its bulk-hydrate form, stable only below 370 K, and ...