Blar i NTNU Open på forfatter "Fossum, Jon Otto"

Viser treff 41-57 av 57

    • Intercalation of CO2 Selected by Type of Interlayer Cation in Dried Synthetic Hectorite 

      Hunvik, Kristoffer William Bø; Seljelid, Konstanse Kvalem; Wallacher, Dirk; Kirch, Alexsandro; Cavalcanti, Leide Passos; Loch, Patrick; Røren, Paul Monceyron; Michels-Brito, Paulo Henrique; Droppa-Jr, Roosevelt; Knudsen, Kenneth Dahl; Miranda, Caetano Rodrigues; Breu, Josef; Fossum, Jon Otto (Peer reviewed; Journal article, 2023)
      Clay minerals are abundant in caprock formations for anthropogenic storage sites for CO2, and they are potential capture materials for CO2 postcombustion sequestration. We investigate the response to CO2 exposure of dried ...

    • Large bandgap insulating superior clay nanosheets 

      Pacáková, Barbara; Vullum, Per Erik; Kirch, Alexsandro; Breu, Josef; Miranda, Caetano Rodrigues; Fossum, Jon Otto (Journal article; Peer reviewed, 2022)
      One can find conductive, semiconducting, and insulating single nanosheets with unique electronic properties that are tied to their two-dimensional (2D) structure. Here, we report on wide-bandgap 2D insulator nanosheets ...

    • Mechanics of Pickering Drops Probed by Electric Field Induced Stress 

      mikkelsen, alexander; Dommersnes, Paul Gunnar; Rozynek, Zbigniew Jerzy; Gholamipour-Shiraz, Azarmidokht; Carvalho, Marcio; Fossum, Jon Otto (Journal article; Peer reviewed, 2017)
      Fluid drops coated with particles, so-called Pickering drops, play an important role in emulsion and capsule applications. In this context, knowledge of mechanical properties and stability of Pickering drops are essential. ...

    • Oxygen-Controlled Phase Segregation in Poly(N-isopropylacrylamide)/Laponite Nanocomposite Hydrogels 

      Mauroy, Henrik; Rozynek, Zbigniew; Plivelic, Tomás S.; Fossum, Jon Otto; Helgesen, Geir; Knudsen, Kenneth (Journal article; Peer reviewed, 2013)

    • Particle Assembly Guided by Electrohydrodynamics and Dielectrophoresis 

      Mikkelsen, Alexander (Doctoral thesis at NTNU;2016:121, Doctoral thesis, 2016)
      Norwegian: Vanlige utfordringer i forbindelse med oljeutvinning og produksjon av blant annet mat, medisin og kosmetikkprodukter er å hindre at dråper vokser sammen. Prøver man å blande to ikke-blandbare væsker (som ...

    • Photonic composite materials from cellulose nanorods and clay nanolayers 

      Trindade, Ana Catarina; Carreto, Miguel; Helgesen, Geir; Knudsen, Kenneth Dahl; Puchtler, Florian; Breu, Josef; Fernandes, Susete; Godinho, Maria Helena; Fossum, Jon Otto (Peer reviewed; Journal article, 2020)
      Cellulose nano crystals (CNCs) are promising materials for energy efficient buildings related to the control of reflectivity and heat absorption/reflection of light. In this sense it is important to improve CNCs films fire ...

    • Physicochemical mechanisms for gas adsorption on clay mineral interfaces and surfaces 

      Hunvik, Kristoffer William Bø (Doctoral theses at NTNU;2020:316, Doctoral thesis, 2020)
      Increasing anthropogenic carbon emissions have a detrimental impact on our planet's ecosystems. If we want to keep our planet habitable for future generations, serious action is needed. We need to both reduce and mitigate ...

    • Producing tubes of a droplet in an emulsion with surface particles at the interface 

      Pedersen, Arne Halvor Thingstad (Master thesis, 2014)
      The aim of the work done in connection to this thesis was to find different methods with which long tubes of one liquid suspended in another can be made (an emulsion). Various liquids (silicone oil, castor oil, diethyl-phtalate, ...

    • Sample cell for studying liquid interfaces with an in situ electric field using X-ray reflectivity and application to clay particles at oil-oil interfaces 

      Larsen, Simon R.; Hansteen, Marie; Pacáková, Barbara; Theodor, Keld; Arnold, Thomas; Rennie, Adrian R.; Helgesen, Geir; Knudsen, Kenneth Dahl; Bordallo, Heloisa N.; Fossum, Jon Otto (Journal article; Peer reviewed, 2018)
      Commissioning results of a liquid sample cell for X-ray reflectivity studies with an in situ applied electrical field are presented. The cell consists of a Plexiglas container with lateral Kapton windows for air–liquid and ...

    • Self-Assembly from Functionalized Clay Nanolayers: Nematics and Hybrid Structures 

      Brito, Paulo Henrique Michels (Doctoral theses at NTNU;2021:321, Doctoral thesis, 2021)
      The focus of this Ph.D. thesis is to study functionalization and associated self-assembly of clay mineral in suspensions. Clay minerals are two-dimensional materials. They are among the most abundant, highly sustainable, ...

    • Smectite as ciprofloxacin delivery system: Intercalation and temperature-controlled release properties 

      Rivera, A; Valdes, L; Jimenez, J; Perez, I; Lam, A; Altshuler, E; De Menorval, LC; Fossum, Jon Otto; Hansen, Elisabeth Lindbo; Rozynek, Zbigniew Jerzy (Journal article; Peer reviewed, 2016)
      Clays have shown to be good candidates as drug delivery carriers. In the present paper, the temperature-dependent swelling of smectites was exploited to obtain composites able to release a drug in a controlled way. More ...

    • Swelling transition of a clay induced by heating 

      Hansen, Elisabeth Lindbo; Hemmen, Henrik; Fonseca, Davi de Miranda; Coutant, C.; Knudsen, Kenneth; Plivelic, T; Bonn, D; Fossum, Jon Otto (Journal article; Peer reviewed, 2012)
      Clays are of paramount importance for soil stability, but also in applications ranging from oil recovery to composites and hydrogels. Generically, clays are divided into two subclasses: macroscopically swelling, ‘active’ ...

    • The Frederiks transition in an aqueous clay dispersion 

      Hemmen, Henrik; Hansen, Elisabeth Lindbo; Ringdal, Nils Ivar; Fossum, Jon Otto (Journal article; Peer reviewed, 2012)
      We show that under certain circumstances, aqueous dispersions of Na-fluorohectorite synthetic clay display transient spatially periodic structures when subjected to magnetic fields. These nematic structures result from the ...

    • Time-dependent Re-Aggregation of Colloidal Laponite Clay Suspensions 

      Stranger, Snorre (Master thesis, 2014)
      We study a synthetic clay suspension of laponite by measuring transient electric birefringence (TEB) and dynamic light scattering (DLS) over time. Experiments show a strong dependence on stirring of the sample for anomalous ...

    • Transition from glass- to gel-like states in clay at a liquid interface 

      Gholamipour-Shirazi, A; Carvalho, MS; Huila, MFG; Araki, K; Dommersnes, Paul Gunnar; Fossum, Jon Otto (Journal article; Peer reviewed, 2016)
      Colloidal clay in water suspensions are known to exhibit a multitude of bulk phases depending on initial colloidal concentration and ionic strength, and examples of this include repulsive Wigner colloidal glasses at low ...

    • X-ray Studies of Capture, Storage and Release of CO2 

      Rustenberg, Karin Hveding (Master thesis, 2012)
      We show experimentally that CO2 intercalates into the interlayer spaceof the synthetic smectite clay Li-fluorohectorite (LiFh). The intercalationoccurs for a range of conditions in terms of pressure (5 bar to 20 bar) ...

    • X-ray Studies of Carbon Dioxide Intercalation in Na-Fluorohectorite Clay at Near-Ambient Conditions 

      Hemmen, Henrik; Rolseth, Erlend G.; Fonseca, Davi de Miranda; Hansen, Elisabeth Lindbo; Fossum, Jon Otto; Plivelic, T (Journal article, 2012)
      We show experimentally that gaseous CO2 intercalates into the interlayer space of the synthetic smectite clay Na-fluorohectorite at conditions not too far from ambient. The mean interlayer repetition distance of the clay ...