Blar i NTNU Open på forfatter "Fossum, Jon Otto"
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Electric field nematic alignment of fluorohectorite clay particles in oligomeric matrices
Rozynek, Zbigniew; Castberg, Rene; Mikkelsen, Alexander; Fossum, Jon Otto (Journal article, 2013)We study the behavior of fluorohectorite synthetic clay particles dispersed in paraffin wax. We report wide-angle x-ray scattering related to electric-field-induced alignment of the embedded clay particles. The development ... -
Electric stress-induced slip lines in jammed particle monolayers
Mikkelsen, Alexander; Dommersnes, Paul Gunnar; Fossum, Jon Otto (Peer reviewed; Journal article, 2016)Drops fully covered by particles, so called Pickering emulsion drops, are used to stabilize emulsions and are ideal templates for producing particles and advanced capsules. Recent studies show how electrohydrodynamic ... -
Electric-field-induced structuring and rheological properties of kaolinite and halloysite
Rozynek, Zbigniew; Zacher, Tomáš; Janek, Márian; Čaplovičová, Mária; Fossum, Jon Otto (Journal article, 2013)Electric-field-induced structuring of kaolinite and halloysite particles was studied in respect to their electrorheological (ER) response in silicone oil and in paraffin dispersions. The structural and morphological ... -
Electric-stress-induced Slip Lines in Jammed Particle Monolayers
Mikkelsen, Alexander; Dommersnes, Paul Gunnar; Fossum, Jon Otto (Journal article; Peer reviewed, 2016)Drops fully covered by particles, so called Pickering emulsion drops, are used to stabilize emulsions and are ideal templates for producing particles and advanced capsules. Recent studies show how electrohydrodynamic ... -
Electrical Excitation of Water Drops in Oil
Penne, Torstein Eidsnes (Master thesis, 2015)Water drops in oil are excited by the use of electric fields. This thesis looks at the behavior of water drops subjected to different fields. These fields vary in shape and strength. The motivation behind is separation of ... -
Electro-hydrodynamic propulsion of counter-rotating Pickering drops
Dommersnes, Paul Gunnar; Mikkelsen, Alexander; Fossum, Jon Otto (Journal article; Peer reviewed, 2016)Insulating particles or drops suspended in carrier liquids may start to rotate with a constant frequency when subjected to a uniform DC electric field. This is known as the Quincke rotation electro-hydrodynamic instability. ... -
Electroformation of Janus and patchy capsules
Rozynek, Zbigniew Jerzy; Mikkelsen, Alexander; Dommersnes, Paul; Fossum, Jon Otto (Journal article; Peer reviewed, 2014)Janus and patchy particles have designed heterogeneous surfaces that consist of two or several patches with different materials properties. These particles are emerging as building blocks for a new class of soft matter and ... -
Electrohydrodynamic Structuring of Colloidal Particles on Leaky Dielectric Drops
Seth, Julie Janine Ravnanger (Master thesis, 2013)This Master's thesis shows experimentally how colloidal particles in leakydielectric liquid drops are actively structured by applying a DC electric eld.Colloidal particles in small droplets with a diameter of 100 m show ... -
Electrohydrodynamics and particle sintering as methods for production of microporous capsules
Krüger, Asbjørn Torsvik (Master thesis, 2019)Kapsler av alle størrelser brukes i både vitenskapelige og medisinske områder. De kan være enten forseglede eller porøse for å regulere materialstrøm. I denne oppgaven blir konstruksjonen av porøse sfæriske kapsler undersøkt, ... -
EXAFS and XRD studies in synthetic Ni-Fluorohectorite
Michels, Leander Edward; Ribeiro, Luciano; Mundim, Maria Suely Pedrosa; Sousa, Marcelo Henrique; Droppa, Roosevelt; Fossum, Jon Otto; da silva, Geraldo Jose; Mundim, Kleber Carlos (Journal article, 2014)In the present work the synthetic clay mineral fluorohectorite was studied by means of an extended X-ray absorption fine structure (EXAFS) in a powder sample with the intention to observe the number of neighboring atoms ... -
Experimental studies of clay-stabilized oil-in-water emulsions
Hovdan, Ane Kamilla (Master thesis, 2013)Several experiments concerning clay-stabilized Pickering emulsions have been studied.General emulsion coalescence with and without clay was investigated with optical microscopy.It showed that clay slows down the rate of ... -
Experimental Studies of Finger and Fracture Instabilities in Clays Throughout the Sol-Gel Transition
Cappelen, Beate Ulrikke Krefting (Master thesis, 2011)This report concerns preliminary studies of fingering and fracturing in gelling materials, with the aim of identifying how the phenomena of fingering transitions into fracturing as the breaking medium gradually becomes ... -
Experimental Studies of Flow- and Electric Properties of Oil Droplets Including Suspended Clay Particles
Mikkelsen, Alexander (Master thesis, 2012)Experiments on oil droplets made of silicone oil and sodium-fluorohectorite (Na-Fh) clay particles suspended in castor oil were performed. The electric field (E-field)-induced structuring of clay particles placed inside ... -
Experimental Studies of Instabilities Near the Sol-Gel Transition
Hox, Kristian (Master thesis, 2012)This master thesis presents a new experimental way to dynamically determinerheological properties of a complex fluid. The fluid investigated is asuspension of the synthetic clay mineral laponite of 3 wt%. This is mixedtogether ... -
Experimental Studies of Monodisperse Pickering Emulsions Stabilized by Laponite Clay
Johnsrud, Emilie Lund (Master thesis, 2013)Experiments on oil-in-water Pickering emulsions stabilized by the disc-likesynthetic clay mineral Laponite were performed. Magnetic resonance imagingwas used to determine how the viscosity of the oil, the oil volume ... -
Experimental Studies of the Two Phase Flow and Monodispersed Pickering Emulsions Stabilized by LaponiteRD in a Microfluidic T- Junction
Idris, Humaira (Master thesis, 2014)Monodispersed droplets were produced in a microfluidic T-junction by controlling flow rates of dispersed and continuous phases. The space between each droplet was controlled and it was similar between different droplets. ... -
Growth kinetics and structure of a colloidal silica-based network: in situ RheoSAXS investigations
Seljelid, Konstanse Kvalem; Trigueiro Neto, Osvaldo; Akanno, Andrew Ndubuisi; Telli Ceccato, Bruno; Padinjakkara Ravindranathan, Rini; Azmi, Namrah Rafat Ahmed; Cavalcanti, Leide Passos; Fjelde, Ingebret; Knudsen, Kenneth Dahl; Fossum, Jon Otto (Journal article; Peer reviewed, 2024)Silica gels have a multitude of applications ranging from cosmetics and food science to oil and gas recovery. For proper design and application, it is important to have a thorough understanding of the underlying mechanisms ... -
The Impact of Thermal History on Water Adsorption in a Synthetic Nanolayered Silicate with Intercalated Li+ or Na+
Michels Brito Miranda, Leander Edward; Fonesca, C. L. S. da; Méheust, Y.; Altoé, M. A. S.; Santos, E. C. dos; Grassi, G.; Droppa Jr., R.; Knudsen, Kenneth Dahl; Cavalcanti, Leide Passos; Hunvik, Kristoffer William Bø; Fossum, Jon Otto; Silva, G.J. da; Bordallo, H. N. (Peer reviewed; Journal article, 2020)For applications benefitting from the swelling properties of nanolayered silicates (clay minerals), it is of paramount importance to understand the hysteresis in the clay–water interaction. In this context, the present ... -
Incorporation of tramadol drug into Li-fluorohectorite clay: A preliminary study of a medical nanofluid
Valdes, L; Hernandez, D; de Menorval, L Ch; Perez, I; Altshuler, E; Fossum, Jon Otto; Rivera, A (Journal article; Peer reviewed, 2016) -
Influence of CO2 on Nanoconfined Water in a Clay Mineral
Hunvik, Kristoffer William Bø; Lima, Rodrigo José Da Silva; Kirch, Alexsandro; Loch, Patrick; Monceyron Røren, Paul; Hoffmann Petersen, Martin; Rudić, Svemir; García Sakai, Victoria; Knudsen, Kenneth Dahl; Rodrigues Miranda, Caetano; Breu, Josef; Fossum, Jon Otto; Bordallo, Heloisa N. (Peer reviewed; Journal article, 2022)Developing new technologies for carbon sequestration and long-term carbon storage is important. Clay minerals are interesting in this context as they are low-cost, naturally abundant, can adsorb considerable amounts of ...