Current Research Information SysTem In Norway
 
 

 English version


 
Hovedside
Forskningsresultater/NVI
Forskere
Prosjekter
Forskningsenheter
Logg inn
Om Cristin
 
 
   
Eksporter til


Viser treff 1-50 av 60 << Forrige 1 2    Neste >>

2019
1 Helgesen, Geir.
Evolving Soft Matter: Shape, Dynamics and Functionality. The Geilo School 2019, March 11-21, Geilo, Norway. Kjeller: Institutt for energiteknikk 2019 (ISBN 978-82-7017-924-4) 28 s. IFE/E(2019/015)
IFE Untitled
 
2 Helgesen, Geir.
Propulsion of microspheres in fluids using rotating magnetic fields. The European Physical Journal Special Topics 2019 ;Volum 227.(17) s. 2425-2438
IFE UiO Untitled
 
3 Pal, Santosh Kumar; Frommen, Christoph; Kumar, Susmit; Hauback, Bjørn; Fjellvåg, Helmer; Woodcock, T. G.; Nielsch, K; Helgesen, Geir.
Comparative phase transformation and magnetocaloric effect study of Co and Mn substitution by Cu in MnCoGe compounds. Journal of Alloys and Compounds 2019 ;Volum 775. s. 22-29
IFE UiO Untitled
 
4 Skjeltorp, Arne Torbjørn; Helgesen, Geir.
Physics inspired by living matter: dynamics, topology and functionality. The European Physical Journal Special Topics 2019 ;Volum 227.(17) s. 2391-2392
IFE UiO Untitled
 
2018
5 Helgesen, Geir.
Magnetic propulsion of microspheres at liquid-glass interfaces. Journal of Applied Physics 2018 ;Volum 123.(6)
IFE Untitled
 
6 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; Cavalcanti, Leide Passos.
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. Journal of Synchrotron Radiation 2018 ;Volum 25. s. 915-917
IFE NTNU Untitled
 
2017
7 Cavalcanti, Leide Passos; Kalantzopoulos, Georgios N.; Sobas, Pawel Andrzej; Bordallo, Heloisa N.; Helgesen, Geir; Knudsen, Kenneth; Fossum, Jon Otto.
High charge density smectite clays for CO2 capture. 16th International Clay Conference (16ICC); 2017-07-17 - 2017-07-17
NTNU UiO Untitled
 
8 Cavalcanti, Leide Passos; Kalantzopoulos, Georgios N.; Sobas, Pawel Andrzej; Bordallo, Heloisa N.; Helgesen, Geir; Knudsen, Kenneth; Fossum, Jon Otto.
Why are high charge density clays effective for CO2 capture ?. Norsk Fysisk Selskap - Fysikermøtet 2017; 2017-08-07 - 2017-08-09
IFE NTNU UiO Untitled
 
2016
9 Skjeltorp, Arne Torbjørn; Helgesen, Geir.
Editorial. The European Physical Journal Special Topics 2016 ;Volum 225.(4) s. 627-628
IFE UiO Untitled
 
2015
10 Cernák, Jozef; Helgesen, Geir; Cizmar, Erik; Kovác, Jozef; Jurašeková, Zuzana; Voltr, Josef.
Magnetic properties of graphene nanodisk and nanocone powders at low temperatures. Physical review B (PRB) 2015 ;Volum 92.
IFE Untitled
 
11 Knaapila, Matti; Høyer, Henrik; Helgesen, Geir.
Composite microdiscs with a magnetic belt: Preparation, chaining properties, and use as switchable catalyst carriers. ACS Applied Materials & Interfaces 2015 ;Volum 7.(14) s. 7795-7800
IFE UiO Untitled
 
12 Michels, Leander; Fossum, Jon Otto; Rozynek, Zbigniew Jerzy; Hemmen, Henrik; Rustenberg, Karin Hveding; Sobas, Pawel Andrzej; Kalantzopoulos, Georgios N.; Helgesen, Geir; Knudsen, Kenneth Dahl; Janek, Márian; Plivelic, Tomás S.; da silva, Geraldo Jose.
Intercalation and Retention of Carbon Dioxide in a Smectite Clay promoted by Interlayer Cations. Nordic Physics Days, NTNU, Trondheim Norway, June 9-12, 2015; 2015-06-09 - 2015-06-12
NTNU UiO Untitled
 
13 Sandsaunet, Marit Ulset; Knaapila, Matti; Tavares, Luciana; Kjelstrup-Hansen, Jacob; Helgesen, Geir.
Parallel integration of aligned carbon strings in polymer composite: Dielectrophoretic preparation, finite element simulation, and electrical characterization. Polymer Composites 2015 ;Volum 36.(10) s. 1866-1874
IFE NTNU Untitled
 
2014
14 Cernák, Jozef; Helgesen, Geir; Hage, Fredrik Sydow; Kovác, Jozef.
Magnetoresistance of composites based on graphitic discs and cones. Journal of Physics D: Applied Physics 2014 ;Volum 47.(33)
IFE UiO Untitled
 
15 Hage, Fredrik Sydow; Kepaptsoglou, Despoina Maria; Seabourne, Ché Royce; Ramasse, Quintim M.; Scott, Andrew J.; Prytz, Øystein; Gunnæs, Anette Eleonora; Helgesen, Geir.
Dielectric response of pentagonal defects in multilayer graphene nano-cones. Nanoscale 2014 ;Volum 6.(3) s. 1833-1839
IFE UiO Untitled
 
16 Knaapila, Matti; Høyer, Henrik; Helgesen, Geir.
Dielectrophoresis in particle confinement: Aligned carbon particles in polymer matrix below percolation threshold. The European Physical Journal Special Topics 2014 ;Volum 223.(9) s. 1869-1882
IFE UiO Untitled
 
17 Knaapila, Matti; Høyer, Henrik; Kjelstrup-Hansen, Jacob; Helgesen, Geir.
Transparency enhancement for photoinitiated polymerization (UV curing) through magnetic field alignment in a piezoresistive metal/polymer composite. ACS Applied Materials & Interfaces 2014 ;Volum 6.(5) s. 3469-3476
IFE UiO Untitled
 
18 Skjeltorp, Arne Torbjørn; Helgesen, Geir.
Editorial. The European Physical Journal Special Topics 2014 ;Volum 223.(9) s. 1743-1744
IFE UiO Untitled
 
2013
19 Cernák, Jozef; Helgesen, Geir; Skjeltorp, Arne Torbjørn; Kovác, Jozef; Voltr, Josef; Cizmar, Erik.
Magnetic properties of carbon nanodisk and nanocone powders. Physical Review B. Condensed Matter and Materials Physics 2013 ;Volum 87.(1) s. -
IFE Untitled
 
20 Hage, Fredrik Sydow; Ramasse, Quentin; Kepaptsoglou, Despoina Maria; Prytz, Øystein; Gunnæs, Anette Eleonora; Helgesen, Geir; Brydson, Rik.
Topologically induced confinement of collective modes in multilayer graphene nanocones measured by momentum-resolved STEM-VEELS. Physical Review B. Condensed Matter and Materials Physics 2013 ;Volum 88.(15) s. -
IFE UiO Untitled
 
21 Mauroy, Henrik; Hansen, Elisabeth Lindbo; Rozynek, Zbigniew; Plivelic, Tomás S.; Fossum, Jon Otto; Helgesen, Geir; Knudsen, Kenneth.
Polystyrene‐clay nanocomposites: the effect of clay surface charge. 15th International Clay Conference; 2013-07-07 - 2013-07-11
NTNU UiO Untitled
 
22 Mauroy, Henrik; Plivelic, Tomás S.; Hansen, Elisabeth Lindbo; Fossum, Jon Otto; Helgesen, Geir; Knudsen, Kenneth.
Effect of clay surface charge on the emerging properties of polystyrene-organoclay nanocomposites. Journal of Physical Chemistry C 2013 ;Volum 117.(38) s. 19656-19663
IFE NTNU UiO Untitled
 
23 Mauroy, Henrik; Rozynek, Zbigniew; Plivelic, Tomás S.; Fossum, Jon Otto; Helgesen, Geir; Knudsen, Kenneth.
Oxygen-Controlled Phase Segregation in Poly(N-isopropylacrylamide)/Laponite Nanocomposite Hydrogels. Langmuir 2013 ;Volum 29.(1) s. 371-379
IFE NTNU Untitled
 
24 Mauroy, Henrik; Rozynek, Zbigniew; Plivelic, Tomás S.; Fossum, Jon Otto; Helgesen, Geir; Knudsen, Kenneth.
Phase segregation in PNIPAAM‐laponite hydrogels: the effect of dissolved oxygen. 15th International Clay Conference; 2013-07-07 - 2013-07-11
NTNU UiO Untitled
 
25 Sobas, Pawel Andrzej; Knudsen, Kenneth; Helgesen, Geir; Skjeltorp, Arne Torbjørn; Mauroy, Henrik; Fossum, Jon Otto.
Supercritical CO2 in aerogels and clay materials studied by small angle neutron scattering. Soft Matter Confinement, Geilo School; 2013-03-11 - 2013-03-21
NTNU UiO Untitled
 
26 Sobas, Pawel Andrzej; Knudsen, Kenneth; Helgesen, Geir; Skjeltorp, Arne Torbjørn; Mauroy, Henrik; Fossum, Jon Otto.
Supercritical CO2 in aerogels and clay materials studied by small angle neutron scattering. 15th International Clay Conference; 2013-07-07 - 2013-07-11
NTNU UiO Untitled
 
27 Sobas, Pawel Andrzej; Knudsen, Kenneth; Helgesen, Geir; Skjeltorp, Arne Torbjørn; Mauroy, Henrik; Kalantzopoulos, Georgios N.; Fossum, Jon Otto.
CO2 adsorption and intercalation in aerogels and clay materials studied by SANS. Nordsoft International workshop on Soft matter Physics and Biomembranes; 2013-05-21 - 2013-05-24
IFE NTNU UiO Untitled
 
28 Sobas, Pawel Andrzej; Knudsen, Kenneth; Helgesen, Geir; Skjeltorp, Arne Torbjørn; Måløy, Knut Jørgen; Rozynek, Zbigniew; Fossum, Jon Otto.
Dynamic light scattering measurements of clay materials in liquid CO2: preliminary results. 15th International Clay Conference; 2013-07-07 - 2013-07-11
NTNU UiO Untitled
 
29 Sobas, Pawel Andrzej; Knudsen, Kenneth; Helgesen, Geir; Skjeltorp, Arne Torbjørn; Måløy, Knut Jørgen; Rozynek, Zbigniew; Fossum, Jon Otto.
Dynamic Light Scattering measurements of clay materials in lquid CO2: Preliminary results. Soft Matter Confinement, Geilo School; 2013-03-11 - 2013-03-21
NTNU UiO Untitled
 
2012
30 Helgesen, Geir; Knaapila, Matti; Skjeltorp, Arne Torbjørn; Høyer, Henrik; Cernak, J.
Field induced microparticle structure formation in fluids. Revista Cubana de Física 2012 ;Volum 29.(1E34) s. -
IFE UiO Untitled
 
31 Høyer, Henrik; Knaapila, Matti; Kjelstrup-Hansen, Jacob; Helgesen, Geir.
Microelectromechanical strain and pressure sensors based on electric field aligned carbon cone and carbon black particles in a silicone elastomer matrix. Journal of Applied Physics 2012 ;Volum 112.(9) s. -
IFE UiO Untitled
 
32 Høyer, Henrik; Knaapila, Matti; Kjelstrup-Hansen, Jacob; Liu, Xuhai; Helgesen, Geir.
Individual strings of conducting carbon cones and discs in a polymer matrix: Electric field-induced alignment and their use as a strain sensor. Journal of Polymer Science Part B: Polymer Physics 2012 ;Volum 50.(7) s. 477-483
IFE UiO Untitled
 
33 Johnsen, Gorm Krogh; Knaapila, Matti; Martinsen, Ørjan Grøttem; Helgesen, Geir.
Conductivity enhancement of silver filled polymer composites through electric field alignment. Composites Science And Technology 2012 ;Volum 72.(15) s. 1841-1847
IFE OUS UiO Untitled
 
34 Lukin, A.A.; Il'yashenko, E. I.; Skjeltorp, Arne Torbjørn; Helgesen, Geir.
Improvement of thermal stability of Nd-Tb-Fe-Co-B sintered magnets by additions of Pr, Ho, Al, and Cu. Physics Research International 2012 s. -
IFE Untitled
 
35 Mauroy, Henrik; Knudsen, Kenneth Dahl; Helgesen, Geir; Fossum, Jon Otto; Rozynek, Zbigniew.
Synthesis and Characterization of Polysterene-Clay nanocomposites, 2nd International Workshop on Complex Physical Phenomena in Materials, Porto de Galinhas – PE, Brazil, Jan. 31 – Feb. 3, 2012. 2nd International Workshop on Complex Physical Phenomena in Materials; 2012-01-31 - 2012-02-03
IFE NTNU UiO Untitled
 
36 Skjeltorp, Arne Torbjørn; Helgesen, Geir.
Cooperative phenomena in flows: multidisciplinary perspectives. The European Physical Journal Special Topics 2012 ;Volum 204.(1) s. 1-3
IFE UiO Untitled
 
37 Sobas, Pawel Andrzej; Knudsen, Kenneth Dahl; Helgesen, Geir; Skjeltorp, Arne T.; Fossum, Jon Otto.
CO2 and porous media – SANS. I: Proceedings of the 2nd International Workshop on Complex Physical Phenomena in Materials : Hotel Armação, Porto de Galinhas - PE, Brazil, January 31-February 3, 2012. Kjeller: Complexphysics.org 2012 ISBN 978-82-93224-06-8. s. 49-50
IFE NTNU Untitled
 
38 Sobas, Pawel Andrzej; Knudsen, Kenneth Dahl; Helgesen, Geir; Skjeltorp, Arne T.; Fossum, Jon Otto.
CO2 and porous media - SANS, 2nd International Workshop on Complex Physical Phenomena in Materials, Porto de Galinhas – PE, Brazil, Jan. 31 – Feb. 3, 2012. 2nd International Workshop on Complex Physical Phenomena in Materials; 2012-01-31 - 2012-02-03
IFE NTNU Untitled
 
39 Sobas, Pawel Andrzej; Knudsen, Kenneth Dahl; Helgesen, Geir; Skjeltorp, Arne T.; Måløy, Knut Jørgen; Fossum, Jon Otto.
Electric field alignement of clay particles, International Workshop on Soft Matter Physics & Complex Flows, Lofoten, Norway, May 22-25, 2012. International Workshop on Soft Matter Physics & Complex Flows; 2012-05-22 - 2012-05-25
IFE NTNU UiO Untitled
 
40 Sobas, Pawel Andrzej; Knudsen, Kenneth; Helgesen, Geir; Skjeltorp, Arne Torbjørn; Måløy, Knut Jørgen; Fossum, Jon Otto.
Dynamic Light Scattering measurements of clay materials in liquid CO2: Preliminary results. CLIMIT seminar; 2012-11-29 - 2012-11-30
NTNU UiO Untitled
 
2011
41 Høyer, Henrik; Knaapila, Matti; Kjelstrup-Hansen, Jacob; Liu, Xuhai; Helgesen, Geir.
A strain sensor based on an aligned carbon particle string in a UV-cured polymer matrix. Applied Physics Letters 2011 ;Volum 99.(21) s. -
IFE NTNU UiO Untitled
 
42 Knaapila, M.; Høyer, Henrik; Svåsand, Eldrid; Buchanan, Mark; Skjeltorp, Arne Torbjørn; Helgesen, Geir.
Aligned Carbon Cones in Free-Standing UV-Curable Polymer Composite. Journal of Polymer Science Part B: Polymer Physics 2011 ;Volum 49.(6) s. 399-403
IFE UiO Untitled
 
43 Knaapila, Matti; Pinheiro, Jean Patrick; Buchanan, Mark; Skjeltorp, Arne Torbjørn; Helgesen, Geir.
Directed assembly of carbon nanocones into wires with an epoxy coating in thin films by a combination of electric field alignment and subsequent pyrolysis. Carbon 2011 ;Volum 49.(10) s. 3171-3178
IFE UiO Untitled
 
44 Knaapila, Matti; Svåsand, Eldrid; Pinheiro, Jean Patrick; Martinsen, Ørjan Grøttem; Buchanan, Mark; Skjeltorp, Arne Torbjørn; Helgesen, Geir; Rømoen, Ola Taarud.
Conductivity Enhancement in Carbon Nanocone Adhesive by Electric Field Induced Formation of Aligned Assemblies. ACS Applied Materials & Interfaces 2011 ;Volum 3.(2) s. 378-384
IFE OUS UiO Untitled
 
2010
45 Hage, Fredrik Sydow; Helgesen, Geir; Gunnæs, Anette Eleonora; Prytz, Øystein.
Graphitization of carbon nanocones and nanodiscs. Scandem 2010; 2010-06-08 - 2010-06-10
UiO Untitled
 
46 Holt, Arve; Thøgersen, Annett; Rohr, Carsten; Bye, Jan-Inge; Helgesen, Geir; Nordseth, Ørnulf; Jensen, Sten Aksel; Norheim, Lasse; Nielsen, Øyvind.
Surface structure of mono-crystalline silicon wafers produced by diamond wire sawing and by standard slurry sawing before and after etching in alkaline solutions. I: 35th IEEE Photovoltaic Specialists Conference Honolulu, HI June 20-25, 2010. IEEE Press 2010 ISBN 978-1-4244-5891-2. s. 3501-3504
IFE Untitled
 
2009
47 Helgesen, Geir; Knudsen, K.D.; Skjeltorp, Arne Torbjørn; Cuesta, H.F.; Elgsæter, A.; Garberg, T.; Næss, S.N.; Knaapila, M..
The Structure of Carbon Cones and Disks. The NANOMAT Conference 2009; 2009-06-16 - 2009-06-17
UiO Untitled
 
48 Helgesen, Geir; Knudsen, K.D.; Skjeltorp, Arne Torbjørn; Knaapila, M.; Pinheiro, J.P.; Bourgeaux, M.; Heiberg-Andersen, H.; Gunnæs, Anette Eleonora; Prytz, Øystein.
The structure and properties of carbon cones. Materials Research Society Fall Meeting 2009; 2009-11-30 - 2009-12-04
UiO Untitled
 
49 Paula, F.L.O.; Da Silva, G.J.; Aquino, R.; Depeyrot, J.; Fossum, Jon Otto; Knudsen, Kenneth D; Helgesen, Geir; Tourinho, F.A..
Gravitational and magnetic separation in self-assembled clay-ferrofluid nanocomposites. Brazilian journal of physics 2009 ;Volum 39. s. 163-170
UiO Untitled
 
50 Gunnæs, Anette Eleonora; Prytz, Øystein; Olsen, Arne; Helgesen, Geir; Knudsen, K. D..
Structural study of C-cones and discs by use of analytical TEM. Scandem 2009; 2009-06-08 - 2009-06-10
UiO Untitled
 
    Vis neste liste