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Two-dimensional (2D) perovskites have emerged as promising building blocks for optoelectronic applications. To fabricate high-performance devices, the relation between the material structures and their function in terms of excited state and charge carrier dynamics need to be well understood. In this thesis, we investigate photophysics of 2D lead halide perovskite with different compositions to rev
The race to publish results during the outbreak of the new coronavirus (SARS-CoV-2) has highlighted the relevance of sharing data and research results more quickly and openly than the current scientific communication system, as well as the role of social media in this context. This paper aims to analyze the impact of open access on the production and dissemination of knowledge about COVID-19 in tr
Futures studies have shown an accelerated growth since the post-World War II period, in which governments and private companies have been attentive to the importance of "forecasting" new trends, mainly technological ones, for their security as an institution. Such studies have gained a new panorama from the proliferation of data on massive scales and the increasing processing capacity, leading to
Spectral broadening via the multi-pass cell technique provides a power-efficient route to direct post-compression of high-power diode-pumped Yb lasers. The talk provides an overview of the method, its performances and discuss prospective advances and applications.
The nucleus 212Po has been produced through the fragmentation of a 238U primary beam at 1 GeV/nucleon at GSI, separated with the FRagment Separator, FRS, and studied via isomer γ-decay spectroscopy with the RISING setup. Two delayed previously unknown γ rays have been observed. One has been attributed to the E3 decay of a 21− isomeric state feeding the α-emitting 45-s (18+) high-spin isomer. The o
Up to tenfold power enhancement of waveform-stable few-cycle pulses is demonstrated in a minimally-dispersive resonator (22-37 THz). This enables spectroscopy of molecular samples based on impulsive excitation and electro-optic sampling at 66 m interaction length.
We demonstrate self-compression of 173 fs pulses centered at 1030 nm down to 19.5 fs through electro-optic phase modulation by the phonon-polariton waves generated in a phase-matched intra-pulse difference-frequency mixing.
Two-dimensional terahertz strong-field spectroscopy reveals wave-mixing processes up to eighth order in a free-running quantum cascade laser, unravelling its sub-cycle gain dynamics and nonlinearities in a regime of negative absorption.
We discuss basic pulse energy scaling principles for multi-pass cells (MPCs) and introduce a novel multi-pass cell type which we employ to numerically predictpost-compression of 125 mJ pulses using a 2 m setup.
BACKGROUND AND OBJECTIVES: The existence of social problems, crime, and a diminishing sense of community are acknowledged challenges to residents of deprived neighborhoods. In research on deprived neighborhoods in Sweden, the perspectives of young residents and adults of working age dominate. This study explores how older adults in deprived neighborhoods in Sweden experience crime and disorder, an
BackgroundMedication treatment can reduce morbidity but can also cause drug-related problems (DRPs). One method to identify and solve DRPs is medication reviews (MRs) that are aimed at increased patient safety and quality in drug treatment. In Skåne county, Sweden, a well-established multi-professional model for MRs in nursing homes is practiced. However, a demand for MRs regarding community-dwell
Glioblastoma (GBM) is the most common and most aggressive primary brain tumor in adults. Glioma stem like cells (GSC) represent the highest cellular hierarchy in GBM and have a determining role in tumor growth, recurrence and patient prognosis. However, a better definition of GSC subpopulations, especially at the surgical resection margin, is warranted for improved oncological treatment options. T
The decarbonisation of energy systems is leading to a reconfiguration of the geographies of energy. One example is the emergence of community energy, which has become a popular object of study for geographers. Although widely acknowledged to be a contested, capacious, and flexible term, “community energy” is commonly presented as singular, bounded, and localised. In this paper, we challenge this c
In recent years the term ‘energy democracy’ has become increasingly popular, especially in the context of aspirations for a low-carbon transition that include wider socio-economic and political transformation. The emergence of ‘energy democracy’ is thus part of a broader trend in research and practice which has sought to foreground the 'stuff’ of politics. Yet, unlike the more academically develop
There is a growing ‘energy democracy’ (ED) movement which regards the transition to renewable energy as an opportunity for socio-economic transformation, as well as technological innovation. The literature on ED tends to associate greater democratic control of energy systems with increased community control over the means of energy generation and distribution. Nonetheless, this literature often as
Using a case study of the Búrfell wind farm project, a large wind farm proposed in the Central Highlands of Iceland, the authors attempt to provide new insights into the factors shaping subjective landscape perceptions and attitudes to renewable energy developments, and into alternative methods that may be used for their assessment. The research was based on an on-site visit and actual experience
For rural communities, energy projects can provide a host of benefits, and yet also be a source of significant conflict. Place attachment has become an increasingly popular concept for understanding local responses to large scale renewable energy installations. However, there has been significantly less attention paid to how place attachment influences local responses to community-led developments
The community energy sector is widely understood to be a pluralistic sector, encompassing a broad range of aims, motivations, and practices. This heterogeneity is, however, still not very well understood. Dominant analytical frameworks in the study of energy geographies offer little in the way of exploring the diversity of motivations, visions, and social relations that are present within the comm
This study provides insights into the external powers that can influence business leaders' communication on sustainability. It shows how the socio-political context manifested in national and transnational policies, regulations and other socio-political events can influence the CEO talk about sustainability. Design/methodology/approach: This study adopts an interpretative and qualitative method of
