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Din sökning på "phd position spin wave generation in quantum materials" gav 26241 sökträffar

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Popular Abstract in English The energy demands of human society are huge and will keep increasing for the foreseeable future. Fossil fuels have largely been able to meet those demands for the last centuries, but issues of sustainability and global warming have brought about a need for alternative energy sources. The emission of the sun supplies earth with an energy that is many thousand times largOrganic solar cells employing fullerenes blended with conjugated polymers as the main light-absorbing material have achieved power conversion efficiencies exceeding 10%. They hold promise as an alternative energy source with many advantages in terms of long-term sustainability and reduced greenhouse gas emissions. Detailed information on the electronic and geometric structure of the molecules invo

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The possibility to manufacture hematopoietic stem cells (HSCs) in the laboratory would provide an indefinite source of cells for patients requiring bone marrow transplantation. Moreover, combined with the progress in gene editing techniques, it would provide a novel platform for gene and cell replacement therapies for a range of currently incurable congenic and acquired disorders. During my PhD, I

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Transition metal dichalcogenide (TMDCs) monolayers make an excellent component in optoelectronic devices such as photodetectors and phototransistors. Selenide-based TMDCs, specifically molybdenum diselenide (MoSe2) monolayers with low defect densities, show much faster photoresponses compared to their sulfide counterpart. However, the typically low absorption of the atomically thin MoSe2 monolayer

Nanowire LEDs

Lighting and displays accounts for a major part of our energy consumption, and presently light emitting diodes are penetrating the market. A first political incentive towards developing more efficient devices was taken by abolishing incandescent lamps. However, much more efficient and longer lifetime lighting devices are present today, constructed by use of semiconductor based light emitting diode

https://www.nano.lu.se/nanoenergy/nanowire-leds - 2026-09-03

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The subwavelength confinement and enhanced electric field created by plasmons allow precise sensing and enhanced light–matter interaction. However, the high frequency and short lifetime of plasmons limit the full potential of this technology. It is crucial to find substitutes and to study their dynamics. Here, we propose an experimental approach allowing the time-domain study of surface phonon pol

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A photoelectron, emitted due to the absorption of light quanta as described by the photoelectric effect, is often characterized experimentally by a classical quantity, its momentum. However, since the photoelectron is a quantum object, its rigorous characterization requires the reconstruction of the complete quantum state, the photoelectron’s density matrix. Here we use quantum-state tomography to

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Droplet microfluidics is a technique that can improve biochemical analyses through higher throughput, lower sample volumes, and reduced costs. For several applications of droplet microfluidics, manipulation of the droplets is required. Trapping is one technique to manipulate the droplets, and can be used for incubation and monitoring of the droplets, allowing enough time for chemical processes to

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This work aims at studying photoionization dynamics from atoms and surfaces at attose time scales. The work was based on development and applications of a high repetition rate High-order Harmonic Generation (HHG) light source that utilizes Optical Parametric Amplification (OPA) laser technology. The laser system delivers few-cycle pulses in the near infrared (IR) at a repetition rate of 200 kHz.

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The infrastructure for the third generation of mobile telephony, UMTS, is under construction in Sweden. Within three years four operators were to build competing systems to cover 99,98 % of the population. The case of the 3G infrastructure illustrates how the sustainability issues are handled in planning and environmental management, with conflicting goals between institutional levels and compet

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Notch signalling occurs via direct cell-cell interactions and plays an important role in linking the fates of neighbouring cells. There are four different mammalian Notch receptors that can be activated by five cell surface ligands. The ability to inhibit specific Notch receptors would help identify the roles of individual family members and potentially provide a means to study and control cell di

Our Awards

Each year at the Annual Meeting, NanoLund is giving Junior Scientist Ideas Awards, Young Teacher Awards, and the Excellent Support Awards. The Awards have been given since 2017 and on this page, you will find the awardees from the years 2017–2025. Awards given by NanoLund annuallyJunior Scientist Ideas AwardSelection for this award is based on the originality, quality and impact of the project as

https://www.nano.lu.se/annualmeeting/our-awards - 2026-09-03

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This is the first part of a series of papers devoted to direct and inverse scattering of transient waves in lossy inhomogeneous media. The medium is assumed to be stratified, i.e., it varies only with depth. The wave propagation is modeled in an electromagnetic case with spatially varying permittivity and conductivity. The objective in this first paper is to analyze properties of the scattering op

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It is unclear whether wave setup exists in river entrances and previous studies have shown that it is virtually non-existent in trained river entrances. However, conclusive studies have not been made on semi-trained and untrained river entrances. In this study, two field surveys were conducted in Australia; one at Wonboyn Lake Estuary, New South Wales, and one at Tallebudgera Creek Estuary, Queens

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Ultrasound is used after extracorporeal shock wave lithotripsy of gallbladder stones to assess fragmentation. In many patients with apparently successful fragmentation, the posttreatment studies show an intraluminal, echogenic focus within the gallbladder, with posterior acoustic shadowing characteristic of an intact stone. Cholesterol gallstones were fragmented in vitro by means of lithotripsy, a

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Currently, there is limited knowledge on how the Swedish strategy with more lenient public health restrictions during the COVID-19 pandemic has influenced people's life satisfaction. Here, we investigated self-reported life satisfaction during the first wave of the pandemic in Sweden, and perceived changes in life satisfaction in relation to various sociodemographic factors. A total of 1082 people