Blar i Bergen Open Research Archive på forfatter "Holst, Bodil"
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Large area microwave plasma CVD of diamond using composite right/left-handed materials
Zalieckas, Justas; Pobedinskas, P.; Greve, Martin Møller; Eikehaug, Kristoffer; Haenen, K.; Holst, Bodil (Journal article; Peer reviewed, 2021)Diamond growth at low temperatures (≤400 °C) and over large areas is attractive for materials, which are sensitive to high temperatures and require good electronic, chemical or surface tribological properties. Resonant-cavity ... -
Light absorption and scattering of 40–170 nm gold nanoparticles on glass substrates
Flatabø, Ranveig; Holm, Vårin Renate Andvik; Eidsvåg, Håkon; Holst, Bodil; Greve, Martin Møller (Peer reviewed; Journal article, 2017)The localized surface plasmon resonance (LSPR) effect in metal nanoparticles is important for many applications ranging from detectors and sensors to photovoltaic devices. The LSPR wavelength is sensitive to the shape, ... -
Low-energy electron ionization mass spectrometer for efficient detection of low mass species
Bergin, Matthew; Ward, David J.; Lambrick, Sam; von Jeinsen, N. A.; Holst, Bodil; Ellis, John; Jardine, Andrew P.; Allison, William (Journal article; Peer reviewed, 2021)The design of a high-efficiency mass spectrometer is described, aimed at residual gas detection of low mass species using low-energy electron impact, with particular applications in helium atom microscopy and atomic or ... -
Material properties particularly suited to be measured with helium scattering: selected examples from 2D materials, van der Waals heterostructures, glassy materials, catalytic substrates, topological insulators and superconducting radio frequency materials
Holst, Bodil; Alexandrowicz, Gil; Avidor, Nadav; Benedek, Giorgio; Bracco, Gianangelo; Ernst, Wolfgang E.; Farias, Daniel; Jardine, Andrew P.; Lefmann, Kim; Manson, Joseph R.; Marquardt, Roberto; Artés, Salvador Miret; Sibener, Steven J.; Wells, Justin W; Tamtögl, Anton; Allison, William (Journal article; Peer reviewed, 2021)Helium Atom Scattering (HAS) and Helium Spin-Echo scattering (HeSE), together helium scattering, are well established, but non-commercial surface science techniques. They are characterised by the beam inertness and very ... -
Monolithic atom interferometry
Fiedler, Johannes; Lefmann, Kim; von Klitzing, Wolf; Holst, Bodil (Journal article; Peer reviewed, 2023)Atom and, more recently, molecule interferometers are used in fundamental research and industrial applications. Most atom interferometers rely on gratings made from laser beams, which can provide high precision, but cannot ... -
Nanodiamond-treated flax: improving properties of natural fibers
Hinzmann, Carsten Peter; Parsons, Drew F.; Fiedler, Johannes; Zalieckas, Justas; Holst, Bodil (Journal article; Peer reviewed, 2024)Synthetic fibers are used extensively as reinforcement in composite materials, but many of them face environmental concerns such as high energy consumption during production and complicated decommissioning. Natural fibers ... -
Nanometer-Resolution Mask Lithography with Matter Waves: Near-Field Binary Holography
Nesse, Torstein; Simonsen, Ingve; Holst, Bodil (Peer reviewed; Journal article, 2019)Mask-based pattern generation is a crucial step in microchip production. The next-generation extreme-ultraviolet- (EUV) lithography instruments with a wavelength of 13.5 nm are currently under development. In principle, ... -
Nanostructuring of free-standing, dielectric membranes using electron-beam lithography
Grepstad, Jon Olav; Greve, Martin Møller; Reisinger, Thomas; Holst, Bodil (Peer reviewed; Journal article, 2013)Nanostructured dielectric membranes are used in several applications ranging from de Broglie matter-wave optical elements to photonic crystals. Precise pattern transfer and high aspect ratio structures are crucial for many ... -
Nettle as a distinct Bronze Age textile plant
Bergfjord, Christian; Mannering, Ulla; Frei, Karin M.; Gleba, Margarita; Scharff, Annemette Bruselius; Skals, Irene; Heinemeier, Jan; Nosch, Marie-Louise; Holst, Bodil (Peer reviewed; Journal article, 2012-09-28)It is generally assumed that the production of plant fibre textiles in ancient Europe, especially woven textiles for clothing, was closely linked to the development of agriculture through the use of cultivated textile ... -
Neutral atom and molecule focusing using a Fresnel zone plate
Reisinger, Thomas; Holst, Bodil (Peer reviewed; Journal article, 2008)Focusing of neutral atoms and molecules has several potential applications. The very first microscopy images using helium as an imaging probe were published earlier this year. Another possible application is to study the ... -
Neutral helium atom microscopy
Palau, Adria Salvador; Eder, Sabrina Daniela; Bracco, Gianangelo; Holst, Bodil (Journal article; Peer reviewed, 2023)Neutral helium atom microscopy, also referred to as scanning helium microscopy and commonly abbreviated SHeM or NAM (neutral atom microscopy), is a novel imaging technique that uses a beam of neutral helium atoms as an ... -
Observation of the boson peak in a two-dimensional material
Tømterud, Martin; Eder, Sabrina Daniela; Büchner, Christin; Wondraczek, Lothar; Simonsen, Ingve; Schirmacher, Walter; Manson, Joseph R.; Holst, Bodil (Journal article; Peer reviewed, 2023)The boson peak is an excess in the phonon vibrational density of states relative to the Debye model. It has been observed in a wide range of amorphous materials, from inorganic glasses to polymers. Two-dimensional random ... -
Particle–wave discrimination in Poisson spot experiments
Reisinger, Thomas; Bracco, Gianangelo; Holst, Bodil (Peer reviewed; Journal article, 2011)Matter–wave interferometry has been used extensively over the last few years to demonstrate the quantum-mechanical wave nature of increasingly larger and more massive particles. We have recently suggested the use of the ... -
Perspectives on weak interactions in complex materials at different length scales
Fiedler, Johannes; Berland, Kristian; Borchert, James; Corkery, Robert; Eisfeld, Alexander; Gelbwaser-Klimovsky, David; Greve, Martin Møller; Holst, Bodil; Jacobs, Karin; Kruger, Matthias; Parsons, Drew F.; Persson, Clas; persselt, martin; Reisinger, Thomas; Scheel, Stefan; Stienkemeier, Frank; Tømterud, Martin; Walter, Michael; Weitz, Ralf Thomas; Zalieckas, Justas (Journal article; Peer reviewed, 2022)Nanocomposite materials consist of nanometer-sized quantum objects such as atoms, molecules, voids or nanoparticles embedded in a host material. These quantum objects can be exploited as a super-structure, which can be ... -
Phonon-Mediated Quasiparticle Lifetime Renormalizations in Few-Layer Hexagonal Boron Nitride
Røst, Håkon; Cooil, Simon Phillip; Åsland, Anna Cecilie; Hu, Jinbang; Ali, Ayaz; Taniguchi, Takashi; Watanabe, Kenji; Belle, Branson Delano; Holst, Bodil; Sadowski, Jerzy; Mazzola, Federico; Wells, Justin William (Journal article; Peer reviewed, 2023)Understanding the collective behavior of the quasiparticles in solid-state systems underpins the field of non-volatile electronics, including the opportunity to control many-body effects for well-desired physical phenomena ... -
Poisson’s spot with molecules
Reisinger, Thomas; Patel, Amil A.; Reingruber, Herbert; Fladischer, Katrin; Ernst, Wolfgang E.; Bracco, Gianangelo; Smith, Henry I.; Holst, Bodil (Peer reviewed; Journal article, 2009)In the Poisson-spot experiment, waves emanating from a source are blocked by a circular obstacle. Due to their positive on-axis interference an image of the source the Poisson spot is observed within the geometrical shadow ... -
Polycrystalline Diamond Coating on Orthopedic Implants: Realization and Role of Surface Topology and Chemistry in Adsorption of Proteins and Cell Proliferation
Zalieckas, Justas; Rios Mondragon, Ivan; Pobedinskas, Paulius; Kristoffersen, Arne Skodvin; Mohamed-Ahmed, Samih; Gjerde, Cecilie; Høl, Paul Johan; Hallan, Geir; Furnes, Ove Nord; Cimpan, Mihaela-Roxana; Haenen, Ken; Holst, Bodil; Greve, Martin Møller (Journal article; Peer reviewed, 2022)Polycrystalline diamond has the potential to improve the osseointegration of orthopedic implants compared to conventional materials such as titanium. However, despite the excellent biocompatibility and superior mechanical ... -
Problem solving in basic physics: Effective self-explanations based on four elements with support from retrieval practice
Gjerde, Vegard; Paulsen, Vegard Havre; Holst, Bodil; Kolstø, Stein Dankert (Journal article; Peer reviewed, 2022)Self-explanation, a learning strategy where students explain to themselves the steps taken in a worked example, is an effective learning strategy in early cognitive skill acquisition. However, many physics students produce ... -
Ratiometric Fluorescent pH Sensing with Carbon Dots: Fluorescence Mapping across pH Levels for Potential Underwater Applications
Szapoczka, Wiktoria Karolina; Olla, Chiara; Carucci, Cristina; Truskewycz, Adam Leo; Skodvin, Tore; Salis, Andrea; Carbonaro, Carlo Maria; Holst, Bodil; Thomas, Peter James (Journal article; Peer reviewed, 2024-09-02)Ocean acidification has become a major climate change concern requiring continuous observation. Additionally, in the industry, pH surveillance is of great importance. Consequently, there is a pressing demand to develop ... -
Realistic mask generation for matter-wave lithography via machine learning
Fiedler, Johannes; Palau, Adria Salvador; Osestad, Eivind Kristen; Parviainen, Pekka; Holst, Bodil (Journal article; Peer reviewed, 2023)Fast production of large-area patterns is crucial for the established semiconductor industry and enables industrial-scale production of next-generation quantum devices. Metastable atom lithography with binary holography ...