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We report on fabrication and optical characterization of GaAs nanopillar (NP) arrays, obtained using a combination of low-cost mask generation by self-assembled silica particles (nanosphere lithography) and dry etching. Tapered structures (conical and frustum NP arrays) are fabricated by appropriate optimization of process parameters. Significant suppression of surface reflectance is observed for
Willow (Salix spp.) trees have been used commercially since the 1980s to produce renewable energy. Some benefits with these trees are that they can clean soil from heavy metals, reduce the risk of nutrient leakage and eutrophication. They could be an alternative to reduce carbon dioxide emissions from fossil fuel, but they are known to emit high rates of biogenic volatile organic compounds (BVOCs)
Implementing energy efficiency measures in historic buildings is a challenging task and require knowledge in a number of different disciplines. The measures to reduce energy use must create a good indoor environment without jeopardizing the loss of important cultural historical values or entailing damages to building materials or load-bearing structures. Building antiquarian-, building biological-
Rickard Eksten – Sida 2 – Forskningsservice | Research Services Hoppa till huvudinnehåll About us Newsletter Newsletter archive Swedish funding bodies Find funding via Pivot-RP Our networks Further LU support Om bloggen och tillgänglighet Horizon Europe Our services Contact details Thematic news Contact us Sök Sök Stäng Meny Meny Forskningsservice | Research Services Rickard Eksten Sida 2 / 4 dece
https://fs.blogg.lu.se/author/rickardeksten/page/2/ - 2026-07-16
Traffic-related air pollution has severe implications for our health and stringent emission legislation is being enforced to traffic emissions, for example in the EU, USA, and China. With stricter emission legislation (next is EURO 7) and a rapid growth of battery electrical vehicles (BEVs) the combustion-derived pollutants emitted from the tailpipe are decreasing. However, heavier vehicles have r
Before the minimum tax directive (2003/96/EC) took effect in 2004, Swedish industries had enjoyed untaxed electricity for over a decade. While the introduction of the tax increased costs for many companies, energy intensive industries were eligible for exemption if they entered an agreement on energy efficiency. Sweden quickly implemented the directive and simultaneously launched the Programme for
Background. Infection with Helicobacter pylori is associated with an increased risk of gastric cancer. Several studies have indicated that the association differs with strain type. We aimed to find out if infection with strains lacking the virulence factor CagA is linked to gastric cancer risk. Materials and methods. In a hospital-based case-control study, we collected sera from 100 case patients
The focus and instruments of innovation policy have changed fundamentally over the last decades. Recently transformative innovative policy has caught the attention of scholars and policy makers, arguing that this is a new shift in the policy discourse. Even though grand challenges such as global warming and migration flows, as well as technological change such as artificial intelligence and indust
A cluster of metabolic factors have been merged into an entity named the metabolic syndrome. Although the characteristics of this syndrome have varied over time the presently used definition was established in 2009. The presence of three abnormal findings out of five components qualifies a person for the metabolic syndrome: elevated waist circumference, elevated triglycerides, reduced high-density
Background: The study presented here has used the commercial flow sheeting program Aspen Plus (TM) to evaluate techno-economic aspects of large-scale hemp-based processes for producing transportation fuels. The co-production of biogas, district heat and power from chopped and steam-pretreated hemp, and the co-production of ethanol, biogas, heat and power from steam-pretreated hemp were analysed. T
Forskargruppen Vård i högteknologisk miljö fokuserar på att utveckla vården i komplexa situationer och vårdmiljöer. Genom att använda non-invasiva metoder såsom VR, maskininlärning och datadrivna strategier fokuseras forskningen på att skapa individanpassade, effektiva vårdlösningar som sträcker sig över hela livscykeln. I forskargruppen utforskas och bedrivs pedagogiska utvecklingsprojekt med syfThe research group Care in High-Tech Environments focuses on advancing healthcare in complex situations and care settings. By utilising non-invasive methods such as VR, machine learning, and data-driven strategies, the research aims to develop personalised, efficient care solutions that span the entire lifecycle. The group also explores and conducts educational development projects aimed at enhanc
Kritiskt sjuka patienter drabbas ofta av ökat vätskeläckage från kärl till vävnad vilket gör intravenös vätsketerapi är viktig komponent i behandlingen av kritiskt sjuka patienter. Även om vätskebehandling tveklöst kan rädda liv kan okritisk användning av vätska orsaka ödem och kompartmentsyndrom vilket i förlängningen kan försämra utfallet. Det övergripande syftet med gruppens forskning är att opFluid therapy is a cornerstone in the treatment of critically ill patients and is one of the most common therapies in intensive care units (ICU). However, excessive fluid therapy has side effects such as tissue oedema and compartment syndromes, which may ultimately worsen outcome. The main objective of the project is to optimize fluid therapy in patients suffering from sepsis/SIRS by investigating
Many nanoadsorbents are reported in the literature, exhibiting remarkable properties in the removal of low concentrations of toxic metals. However, their environmental performance has not yet been well studied. A life cycle assessment (LCA) was carried out for a previously reported nanomaterial-based adsorbent, silicate-titanate nanotubes chitosan beads (STNTs-Ch beads), used to remove cadmium fro
Popular Abstract in Swedish Balansen mellan våra energibehov och den energi som konsumeras är ej längre i jämvikt. Därför är jakten på alternativa energikällor nödvändig. Hållbara energikällor erbjuder ett bra alternativ till fossilbränslen. Bland många typer av hållbara energikällor erbjuder solenergi möjligheten för mer energi än dagens konsumtion. Solceller är de smarta verktyg som omvandlar ljThe balance between our demands of energy and the energy we are consuming is not in equilibrium anymore. Therefore, the search for other energy resources is indispensable. Sustainable energy sources offer the alternative to the fossil fuels. Within many types of sustainable energy sources, solar energy offers more than the total global energy consumption. Solar cells are the smart conversion tools
