Blar i NTNU Open på forfatter "Fossum, Jon Otto"
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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. ... -
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) -
Intercalation and Retention of Carbon Dioxide in a Smectite Clay promoted by Interlayer Cations
Michels, Leander; Fossum, Jon Otto; Rozynek, Zbigniew Jerzy; Hemmen, Henrik; Rustenberg, Karin Hveding; Sobas, Pawel Andrzej; Kalantzopoulos, Georgios N.; Knudsen, Kenneth Dahl; Janec, Marian; Plivelic, Tomás S.; da Silva, Geraldo Jose (Journal article; Peer reviewed, 2015)A good material for CO2 capture should possess some specific properties: (i) a large effective surface area with good adsorption capacity, (ii) selectivity for CO2, (iii) regeneration capacity with minimum energy input, ... -
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 ... -
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 ... -
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 ...