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Popular Abstract in Swedish I detta projekt studerar vi reaktioner som är av betydelse för omvandling av ljusenergi till elektricitet eller bränsle. Materialen är nya typer av organiska polymermaterial som kan ge morgondagens energisnåla och miljövänliga solceller, TV- och datorskärmar, ljuskällor, mm. Men för att detta skall inträffa krävs mycken ny forskning för att förstå de processer som liggeThe main part of the thesis is concerned with charge photogeneration in conjugated polymers. MeLPPP and POMeOPT films were investigated by transient absorption spectroscopy using different excitation photon energies and light intensities with and without an external electric field. We conclude that electric field-assisted charge pair photogeneration occurs from vibrationally relaxed singlet excito

En solfångarhybrid har utvecklats och utvärderats på avdelningen för Energi och ByggnadsDesign på Lunds Tekniska Högskola, LTH. Solfångarhybriden, ”Solfönstret”, består av solcellslaminerade absorbatorer placerade i ett fönster bakom glasrutorna. Solfönstret finns byggt i ett enfamiljshus, Solgården, i Älvkarleö utanför Gävle. För att minska investeringskostnaderna för solel har reflektorer placerA PV/T collector has been developed and evaluated at the department of Energy and Building Design at the Technical University of Lund, LTH in Sweden. The PV/T, a “solar window” made of PV cells laminated on solar absorbers is placed in a window behind the glazing. The solar window is built into a single family house, Solgården, in Älvkarleö outside Gävle in the eastern part of Sweden. To reduce th

Laser wakefield accelerators commonly produce on-axis, low-divergence, high-energy electron beams. However, a high charge, annular shaped beam can be trapped outside the bubble and accelerated to high energies. Here we present a parametric study on the production of low-energy-spread, ultra-relativistic electron ring beams in a two-stage gas cell. Ring-shaped beams with energies higher than 750 Me

Coordinator of Rydberg seminars Contact details Email: cord [dot] arnold [at] fysik [dot] lu [dot] se Phone: +46 46 222 74 72 Mobile: +46 76 949 54 86Organisation Atomic Physics Visiting address: Professorsgatan 1, Lund Room number: A218 Service point: 14 WebpageCord Arnolds profile in Lund University research portalOther affiliations Member of Strategic Research Area NanoLund: Centre for Nanoscie

https://www.fysik.lu.se/en/cord-arnold - 2026-07-17

The properties of atomic negative ions are to a large extent determined by electron-electron correlation which makes them an ideal testing ground for atomic many-body physics. In this paper, we present a detailed experimental and theoretical study of excited states in the negative ion of iridium. The ions were stored at cryogenic temperatures using the double electrostatic ion ring experiment faci

Yoghurt is a dairy product that is well known around the world. When producing yoghurt, the homogenization process is one of the most energy demanding steps. In order to decrease the energy consumption the aim of this master thesis was to understand if the homogenization pressure, the homogenization temperature and the positioning of the homogenizer (upstream or downstream) affect the quality of t

16 April 2026 08:15 to 09:30 | Welcome to a breakfast seminar which sheds some light on the progress of the climate crisis: what key events have occurred in the last ten years, and what is in store for the future? Climate change, driven by greenhouse gas emissions from human activities, is gathering pace, and we are about to pass the 1.5 degree goal set by the world in Paris 2015. Climate change a

https://www.staff.lu.se/calendar/breakfast-seminar-10-back-10-forward-climate-fully-booked - 2026-07-18

To reach their net-zero targets, countries will have to compensate hard-to-abate CO2 emissions through carbon dioxide removal (CDR). Yet, current assessments rarely include socio-cultural or institutional aspects or fail to contextualize CDR options for implementation. Here we present a context-specific feasibility assessment of CDR options for the example of Germany. We assess 14 CDR options, inc

Incorporating fused benzene rings in backbones of anion conducting polymers may improve the properties of anion exchange membranes (AEMs). Here, we haveprepared and studied ether-free AEMs based on poly(arylene piperidinium)s containing up to 50% phenanthrene units. A series of terpolymers were prepared in superacid-mediated polyhydroxyalkylations of phenanthrene, p-terphenyl and N-methylpiperidon

Senior lecturer Contact details Email: anders [dot] ahlstrom [at] mgeo [dot] lu [dot] seOrganisation Department of Earth and Environmental Sciences (MGeo) Service point: 16 WebpageAnders Ahlströms profile in Lund University research portalOther affiliations Member of Strategic Research Area BECC: Biodiversity and Ecosystem services in a Changing Climate Profile area member LU Profile Area: Nature-

https://www.nateko.lu.se/anders-ahlstrom - 2026-07-17

Popular Abstract in Swedish Även om vi befinner oss i en tidsepok av informationsteknologi och superdatorer så utförs dagens forskning baserat på Galileos vetenskapliga principer. Trots det så finns det idag inget behov av att klättra upp i det lutande tornet i Pisa för att observera hur ekvationerna för rörelse, enligt den klassiska mekaniken, tar sig uttryck för fallande kroppar. Samma experimenRecent years have witnessed a growing interest of the scientific community for the use of ab initio and density functional theory methods in theoretical studies of molecules containing many atoms. However, the `scaling wall' of some of the most accurate of such methods is often an obstacle for their applicability to systems of real-life interest, e.g. in biochemistry and nanotechnologies, one bott

The work presented here aims at producing hydrogen for proton-exchange fuel-cell applications from hydrocarbons. This thesis describes an integrated catalytic converter comprising a steam-reforming reactor (heat of reaction supplied by catalytic combustion), a water-gas shift reactor and a preferential oxidation of carbon monoxide reactor, and the work performed on the fuel processing catalysts th

This article builds on an action research process involving Ugandan smallholder farmers in collaborative experimentation on the use of human urine as a crop fertilizer. The aim is to explore farmers' perceptions and evaluation of the practice as a potential and partial solution to soil productivity problems. Findings show that urine fertilization is valued as a low-cost and low-risk practice contr

This paper introduces the third and final part of the 'millennium celebrations of historical highlights of photosynthesis research.' Part 1 ( 308 pages) was published in October 2002 as Vol. 73 of the journal Photosynthesis Research, and Part 2 ( 458 pages) was published in July 2003 as Vol. 76. Here, we recognize particularly the work of three major contributors to our understanding of photosynth

The MAX IV 3 GeV storage ring based on a multibend achromat lattice allows for horizontal emittances from 330 pm rad down to 180 pm rad, depending on the number of insertion devices. The diagnostics used during commissioning will be described, with emphasis on the emittance diagnostics. This will involve two diagnostic beam lines to image the electron beam with infrared and ultraviolet synchrotron

The SPECIES beamline has been transferred to the new 1.5 GeV storage ring at the MAX IV Laboratory. Several improvements have been made to the beamline and its endstations during the transfer. Together the Ambient Pressure X-ray Photoelectron Spectroscopy and Resonant Inelastic X-ray Scattering endstations are capable of conducting photoelectron spectroscopy in elevated pressure regimes with enhan