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Polarization deficiency and excess ion hydration free energy at an electric field E (ion hydration free energy at the field E subtracted by the ion hydration free energy at zero field) of hydrated calcium, sodium, and chlori e ions have been determined by Monte Carlo simulations. A spherical cell containing either one ion and molecular water or only molecular water subjected to an external electri
Free neutral potassium clusters of two different mean sizes were produced using a gas aggregation source. The K 3p core level was probed by means of synchrotron radiation based photoelectron spectroscopy. The absolute binding energy and the intensity ratio of the surface and bulk spectral features were used to obtain independent estimates of the cluster size. Plasmon satellites in core level spect
The proposed MAX IV facility at MAX-lab, Lund University is presented. The project consists of two storage rings at 1.5 and 3 GeV respectively, a 3 GeV linac injector, a facility for short pulses and a Free Electron Laser. The storage rings will cover a broad spectral range and are designed to reach the diffraction limit in a large wavelength range. A new innovative magnet concept and lattice form
The main purpose of this Thesis is the experimental characterization of the electronic and geometric structures of objects called clusters. A cluster consists of a finite group of bound atoms or molecules. Due to its finite size, it may present completely different properties than those of the isolated atom and the bulk. The clusters studied in this work are constituted by rare-gas atoms, organic
This thesis is devoted to fundamental aspects, and to spectroscopic applications of radiative properties in free atoms and ions, as well as in ions doped into crystals. Using the time-resolved laser-induced fluorescence technique, measurements of radiative lifetimes for rare earth elements have been performed in neutral Pr, Nd, Tm, and in singly ionized Sm, Er, Nd, Tm, Yb, as well as in doubly io
Free gases in scattering media and different techniques for such studies are discussed in the present paper. Connections between two techniques that constitute a major research area at our laboratory are presented. One of the techniques concerns measurements of free gas in scattering media, such as human tissue and food products, on a small scale, while the other one is a technique for trace-gas m
The free volume and crystallization behaviour of poly(ethylene naphthalate) (PEN) treated in pressurized carbon dioxide was studied, using Positron Annihilation Lifetime Spectroscopy (PALS) and Differential Scanning Calorimetry (DSC). PALS probes the values of free volume cavity sizes in materials, thus making it possible to investigate the effect of pressurized carbon dioxide treatment on free vo
Despite the fact of being considered as one of the safest regions in the world, the EU reports a wide number of cases of human trafficking every year in its Member States. Moreover, free movement of persons that EU membership grants makes it easier for human trafficking criminals to transport and exploit victims within Member States. The country that has shown by far to have the largest number of
A light pulse that travels through a narrow spectral window, i.e. a frequency range of low absorption, within a strongly absorbing frequency range will be delayed due to strong dispersion. If however, the absorbing structure is inverted, such that it is amplifying instead, one will see that a pulse travelling through this window will have its pulse peak come out of the material before it is sent i
Packaging-free grocery shopping enables consumers to avoid single-use packaging and buy specific quantities tailored to their needs. Despite its benefits, it faces challenges such as limited product variety and availability. This qualitative study explores the motivations, behaviors, and strategies of individuals who engage in or discontinue packaging-free shopping, including how they combine pack
We present and discuss the complete set of infrared-active phonon modes in monoclinic-symmetry crystal modification gallium oxide (gallia, β-Ga2O3). The phonon mode set is obtained from a comprehensive analysis of generalized spectroscopic ellipsometry data in the farinfrared and infrared spectral regions investigating various n-type electrically conductive single crystal samples with different fr
Video capsule endoscopy (VCE), perfomed by ingesting a small vitamin-sized camera pill, was developed over a period of a couple of decades and –since its introduction in clinical practice at the dawn of the millennium– has become an essential tool in the diagnosis and management of small bowel (SB) diseases. At the same time, other fields such as minimally invasive diagnosis of other parts of the
The interplay between diet and immune-parameters which could affect type 1 diabetes (T1D) pathogenesis is not sufficiently clarified. Intestinal upregulation of the activating receptor NKG2D(CD314) and its ligands is a hallmark of celiac disease (CD). However, the direct effect of gluten on NKG2D expression is not known. We studied, by FACS (lymphoid tissues) and RT-qPCR (intestine and pancreatic
This paper presents fully ab initio calculations of the broadenings and spectral shapes of O-2 infrared absorption lines in a free gas and when confined in nanoporous media. These calculations are performed, without use of any adjusted parameter, using a recently proposed approach [Phys. Rev. A 87, 013403 (2013)] that is based on requantized classical molecular-dynamics simulations. This involves
23 maj 2025 15:00 till 20 september 2025 20:00 | Utställning Huvudtiteln Broken Greenhouse anspelar på en samtidskänsla av trasighet – att vi står på ett golv fullt av stenar som historien kastat genom jordens glastak. Idén om att klimatet inte kan påverkas av människan har gått i kras och växthusgas-anden har flytt ur flaskan. Nu är det hög tid att sopa upp skärvorna och av dessa försöka skapa en
https://www.medarbetarwebben.lu.se/evenemang/broken-greenhouse-gestaltade-klimatframtider - 2026-07-04
A dry release method for fabrication of suspended nanostructures is presented. The technique has been combined with an anti-stiction treatment for fabrication of nanocantilever based nanoelectromechanical systems (NEMS). The process combines a dry release method, using a supporting layer of photoresist which is removed using oxygen ashing in a reactive ion etcher (RIE), with CHF3 plasma induced de
