Browsing Fakultet for naturvitenskap (NV) by Title
Now showing items 7549-7568 of 12453
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Nano- and microscale control of alginate interactions and assembly
(Doctoral theses at NTNU;2016:259, Doctoral thesis, 2016)Hydrogels are materials primarily comprised of water and are extensively applied to mimic the extracellular matrix surrounding the cells in our body. Alginate, a naturally derived biopolymer shows great promise in this ... -
Nano- porous proppants for shale oil and gas production
(Master thesis, 2014)Over the last decade a rapid increase in utilization of unconventional reservoirs ha occurred due to advances in horizontal drilling and multi-stage fracturing technology. Reservoirs that earlier were far beyond commercial ... -
Nano-scale characterisation of sheared β” precipitates in a deformed Al-Mg-Si alloy
(Journal article; Peer reviewed, 2019)This paper compares the nano-scale structure of β” precipitates in a peak-aged Al-Mg-Si alloy before and after deformation. Three complementary advanced transmission electron microscopy techniques are used to reveal the ... -
Nanocellulose Crystal-Enhanced Hybrid Membrane for CO2 Capture
(Peer reviewed; Journal article, 2022)Developing a membrane material with both high CO2 permeability and high CO2/N2 selectivity is always desired for CO2 capture, while improving the sustainability of the membrane preparation process is of equal importance. ... -
Nanocellulose-enriched hydrocolloid-based hydrogels designed using a Ca2+ free strategy based on citric acid
(Peer reviewed; Journal article, 2021)In this work fully biomass-based hydrogels were developed using a naturally occurring vegetable hydrocolloid co-mingled with wood-derived nanocellulose fibrils. Two distinct types of hydrocolloids have been considered: a ... -
Nanocomposite Membranes containing Bio-nanofibers and Mimic Enzyme for Biogas upgrading
(Doctoral theses at NTNU;2018:64, Doctoral thesis, 2018)CO2 is the most dominating anthropogenic greenhouse gas. Combustion of fossil fuels, to meet energy demands is one of the major sources of CO2 emission. Release of CO2 from burning fossil fuel and cement industry has ... -
Nanocomposite membranes with high-charge and size-screened phosphorylated nanocellulose fibrils for CO2 separation
(Peer reviewed; Journal article, 2020)In this study, cellulose nanofibrils (CNF) of high charge (H-P-CNF) and screened size (H-P-CNF-S) were fabricated by increasing the charge of phosphorylated cellulose nanofibrils (P-CNFs) during the pre-treatment step of ... -
Nanocosm: A well plate photobioreactor for environmental and biotechnological studies
(Peer reviewed; Journal article, 2021)Phytoplankton are key primary producers at the bottom of the aquatic food chain. They are a highly diverse group of organisms essential for the functioning of our ecosystems and because of their characteristics, their ... -
Nanocrystal segmentation in scanning precession electron diffraction data
(Journal article; Peer reviewed, 2019)Scanning precession electron diffraction (SPED) enables the local crystallography of materials to be probed on the nanoscale by recording a two‐dimensional precession electron diffraction (PED) pattern at every probe ... -
Nanofabrication and properties of gold and platinum nanostructures on graphite
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:379, Doctoral thesis, 2013)This Thesis presents studies of modern aspects of nanotechnology where the size and density of nanostructures play a huge role for further technological advances of our life. As an example of this is heterogeneous catalysis ... -
Nanoflow of Protons and Water in Polymer Electrolyte Membranes
(Master thesis, 2013)This master thesis studies the applicability of continuum mean-field theories such as the Poisson-Nernst-Planck equations and the Stokes equation. In particular, we investigate electro-osmotic flow of water and protons in ... -
Nanomanufacturing of dielectric metasurfaces supported by spectroscopic Mueller Matrix Ellipsometry
(Master thesis, 2022)Metamaterials are artificially structured composites. They can be used to modulate electromagnetic waves. The structural dimensions must be determined by being smaller than the working wavelength. Metasurfaces are multi- ... -
Nanomaterialer for kjemisk oksygenlagring
(Master thesis, 2014)Faserene nanokrystalline pulvere av heksagonal RMnO3, hvor R er Y eller Dy, ble syntetisert med en våt-kjemisk syntesemetode , og prøvene ble varmebehandlet ved forskjellige temperaturer for å oppnå varierende krystallit ... -
Nanomaterials Enhanced Membranes for Carbon Capture
(Doctoral theses at NTNU;2020:253, Doctoral thesis, 2020)Alarming increase in global CO2 emissions has led to climate change. An acceleration in the development of CO2 capture technologies is therefore necessary to facilitate the large-scale implementation of Carbon Capture and ... -
Nanomaterials for Electrochemical Energy Conversion and Storage Technologies
(Journal article; Peer reviewed, 2019)In this modern era, our society faces a serious energy crisis due to increasing human population. Energy consumption starts from small-scale electronic gadgets to high power consuming electric vehicles. To supply power on ... -
Nanomedicine and Sonopermeation in the Treatment of Cancer
(Doctoral theses at NTNU;2019:98, Doctoral thesis, 2018)Treatment of cancer is an enormous challenge that involves multiple biological barriers and drugs with limited specificity, which makes treatment both ineffective and debilitating to the patient. One of the approaches that ... -
Nanometer-Resolution Mask Lithography with Matter Waves: Near-Field Binary Holography
(Journal article; Peer reviewed, 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, ... -
Nanometer‐Scale Depth‐Resolved Atomic Layer Deposited SiO2 Thin Films Analyzed by Glow Discharge Optical Emission Spectroscopy
(Journal article; Peer reviewed, 2018)In this contribution, pulsed radio frequency (rf) glow discharge optical emission spectroscopy (GDOES) is used to investigate the film properties of SiO2 deposited by plasma enhanced atomic layer deposition (PEALD), for ... -
Nanoparticle additions promote outstanding fracture toughness and fatigue strength in a cast Al–Cu alloy
(Peer reviewed; Journal article, 2020)Fatigue resistance and fracture toughness are essential to the reliability of castings during service. Reducing microporosity in cast alloys is a crucial issue for improving their fatigue strength and fracture toughness. ... -
Nanoparticle delivery to the brain - By focused ultrasound and self-assembled nanoparticle-stabilized microbubbles
(Journal article, 2015)The blood–brain barrier (BBB) constitutes a significant obstacle for the delivery of drugs into the central nervous system (CNS). Nanoparticles have been able to partly overcome this obstacle and can thus improve drug ...