Andreas Carlson

• Feneuil, Blandine; Strøm Lillebø, Eirik; Larris Honstad, Christian; Jensen, Atle & Carlson, Andreas (2022). Elastic modulus measurements of cooked Lutefisk. Physics of Fluids. ISSN 1070-6631. 34(4). doi: 10.1063/5.0082963. Fulltekst i vitenarkiv
• Poulain, Stéphane & Carlson, Andreas (2022). Droplet settling on solids coated with a soft layer. Journal of Fluid Mechanics. ISSN 0022-1120. 934. doi: 10.1017/jfm.2021.1112. Fulltekst i vitenarkiv
• Lee, Carmen L.; Chan, Tak Shing; Carlson, Andreas & Dalnoki-Veress, Kari (2022). Multiple droplets on a conical fiber: formation, motion, and droplet mergers. Soft Matter. ISSN 1744-683X. 18(7), s. 1364–1370. doi: 10.1039/d1sm01462e.
• Liese, Susanne & Carlson, Andreas (2021). Membrane shape remodeling by protein crowding. Biophysical Journal. ISSN 0006-3495. 120(12), s. 2482–2489. doi: 10.1016/j.bpj.2021.04.029. Fulltekst i vitenarkiv
• Liese, Susanne; Mahadevan, Lakshminarayana & Carlson, Andreas (2021). Balancing efficiency and homogeneity of biomaterial transport in networks. Europhysics letters. ISSN 0295-5075. 5(135). doi: 10.1209/0295-5075/135/58001. Fulltekst i vitenarkiv Vis sammendrag

  Transport of biomaterial in tubular networks is ubiquitous in nature, where examples include the endoplasmic reticulum, leaf venation or vessel networks in vertebrates. Flow feedback by adjustment of the local tube radius in response to a fluid flow is a pivotal mechanism to optimize the transport properties of a network. To describe liquid transport in tubular networks we develop a minimal mathematical model, which includes the interplay of the viscous flow feedback and the tubes elastic bending energy while conserving the network material. Flow feedback in pitted, branched and loopy networks is shown to lower their resistance, as compared to a feedback-free system, by local adaptations without the need for additional network material. Flow feedback in particular reduces the resistance in pitted and branched networks, directly linked with a reduction in the effective number of neighboring tubes. In loopy networks we find a direction-dependent flow resistance, with a prevailing transport direction set by the network geometry.

• Pedersen, Christian; Ren, Shuai; Wang, Yuliang; Carlson, Andreas & Salez, Thomas (2021). Nanobubble-induced flow of immersed glassy polymer films. Physical Review Fluids. ISSN 2469-990X. 6(11). doi: 10.1103/PhysRevFluids.6.114006. Fulltekst i vitenarkiv
• Pedersen, Christian; Salez, Thomas & Carlson, Andreas (2021). Universal self-similar attractor in the bending-driven levelling of thin viscous films. Proceedings of the Royal Society. Mathematical, Physical and Engineering Sciences. ISSN 1364-5021. 477(2254). doi: 10.1098/rspa.2021.0354. Fulltekst i vitenarkiv
• Janssen, Mathijs Adriaan; Stenmark, Harald & Carlson, Andreas (2021). Divalent ligand-monovalent molecule binding. Soft Matter. ISSN 1744-683X. 17, s. 5375–5383 . doi: 10.1039/d1sm00070e. Fulltekst i vitenarkiv Vis sammendrag

  Simultaneous binding of a divalent ligand to two identical monovalent molecules is a widespread phenomenon in biology and chemistry. Here, we describe how two such monovalent molecules B bind to a divalent ligand AA to form the intermediate and final complexes AA·B and AA·B2. Cases wherein the total concentration [AA]T is either much larger or much smaller than the total concentration [B]T have been studied earlier, but a systematic description of comparable concentrations [AA]T and [B]T is missing. Here, we present numerical and analytical results for the concentrations [AA·B] and [AA·B2] for the entire range 0

• Chan, Tak Shing; Lee, Carmen L.; Pedersen, Christian; Dalnoki-Veress, Kari & Carlson, Andreas (2021). Film coating by directional droplet spreading on fibers. Physical Review Fluids. ISSN 2469-990X. 6(1). doi: 10.1103/PhysRevFluids.6.014004. Fulltekst i vitenarkiv
• Köksal, Elif; Liese, Susanne; Xue, Lin; Ryskulov, Ruslan; Viitala, Lauri & Carlson, Andreas [Vis alle 7 forfattere av denne artikkelen] (2020). Rapid Growth and Fusion of Protocells in Surface‐Adhered Membrane Networks. Small. ISSN 1613-6810. 16(38). doi: 10.1002/smll.202002529.
• Chan, Tak Shing; Pedersen, Christian; Koplik, Joel & Carlson, Andreas (2020). Film deposition and dynamics of a self-propelled wetting droplet on a conical fibre. Journal of Fluid Mechanics. ISSN 0022-1120. 907, A29, s. 907 A29-1–907 A29-22. doi: 10.1017/jfm.2020.834. Fulltekst i vitenarkiv
• Ren, Shuai; Pedersen, Christian; Carlson, Andreas; Salez, Thomas & Wang, Yuliang (2020). Capillary deformation of ultrathin glassy polymer films by air nanobubbles. Physical Review Research (PRResearch). ISSN 2643-1564. 2(4). doi: 10.1103/PhysRevResearch.2.043166. Fulltekst i vitenarkiv
• Rojas Molina, Rossana Virginia; Liese, Susanne & Carlson, Andreas (2020). Diffusion on membrane domes, tubes and pearling structures. Biophysical Journal. ISSN 0006-3495. 120(3), s. 424–431. doi: 10.1016/j.bpj.2020.12.014. Fulltekst i vitenarkiv
• Liese, Susanne; Wenzel, Eva; Kjos, Ingrid; Rojas Molina, Rossana Virginia; Schultz, Sebastian & Brech, Andreas [Vis alle 9 forfattere av denne artikkelen] (2020). Protein crowding mediates membrane remodeling in upstream ESCRT-induced formation of intraluminal vesicles. Proceedings of the National Academy of Sciences of the United States of America. ISSN 0027-8424. 117(46), s. 28614–28624. doi: 10.1073/pnas.2014228117.
• Feneuil, Blandine Fleur Prudence; Jensen, Atle & Carlson, Andreas (2020). Destabilization and phase separation of particle suspensions in emulsions. Soft Matter. ISSN 1744-683X. 16(47), s. 10697–10706. doi: 10.1039/d0sm01485k.
• Rojas Molina, Rossana Virginia; Liese, Susanne; Alimohamadi, Haleh; Rangamani, Padmini & Carlson, Andreas (2020). Diffuso-kinetic membrane budding dynamics. Soft Matter. ISSN 1744-683X. 16(48), s. 10889–10899. doi: 10.1039/d0sm01028f.
• Chan, Tak Shing; Yang, Fan & Carlson, Andreas (2020). Directional spreading of a viscous droplet on a conical fibre. Journal of Fluid Mechanics. ISSN 0022-1120. 894(A26). doi: 10.1017/jfm.2020.240. Fulltekst i vitenarkiv
• Pedersen, Christian; Niven, John; Salez, Thomas; Dalnoki-Veress, Kari & Carlson, Andreas (2019). Asymptotic regimes in elastohydrodynamic and stochastic leveling on a viscous film. Physical Review Fluids. ISSN 2469-990X. 4(12). doi: 10.1103/PhysRevFluids.4.124003. Fulltekst i vitenarkiv

Se alle arbeider i Cristin

• Köksal, Elif; Gözen, Irep; Lund, Reidar & Carlson, Andreas (2021). Surface-assisted formation and development of model protocells. Universitetet i Oslo, Det matematisk-naturvitenskapelige fakultet. ISSN 1501-7710. 2021(2401). Vis sammendrag

  By enabling formation and development of primitive cells, also known as protocells, solid surfaces might have played an important role in the emergence of life on Earth. Current theories on how life originated from primitive cells are based on the initial step, where a spherical capsule made from fat molecules formed spontaneously in water. This model explains the formation well, but not the following steps, such as growth, replication and division. In this PhD thesis, the possible involvement of solid surfaces in the formation and development of primitive cells has been investigated. Solid surfaces existed in the form of rocks and minerals on the early Earth. By bringing together three simple ingredients: solid surfaces, fat molecules and water, and observing their interactions by means of microscopy, a series of unique transformations has been identified. Examples of such behavior are the formation of protocell networks connected with lipid nanotubes, formation of subcompartments similar to organelles in modern cells, protocell fusion and colony formation. Nano-engineered artificial surfaces, as well as natural surfaces including glasses, minerals, rocks, and a meteorite fragment from Mars originating from the earliest crust of the planet were used in the studies.

• Spustova, Karolina; Gözen, Irep; Lund, Reidar & Carlson, Andreas (2021). Membranous Protocell Superstructures. Universitetet i Oslo, Det matematisk-naturvitenskapelige fakultet. ISSN 1501-7710. 2021(2467). Vis sammendrag

  How primitive cells emerged and developed on the early Earth remain an unsolved question. In contrast to the hypotheses that the first living cells evolved from a single ancestor, their development as colonies would provide numerous advantages, such as mechanical stability, enhancement of chemical reactions, and sharing of prebiotic molecules. In this PhD thesis, the formation and development of colony-like primitive cell structures and populations was investigated using three simple ingredients: water, fat molecules and solid surfaces. Transformation of fat agglomerates into large populations of structured primitive cells that are able to communicate and migrate, was observed under a light microscope. The role of solid surfaces which were abundant on the early Earth in form of rocks and minerals, was shown to be fundamental for these processes. These findings make us rethink the current theories on how life originated and show that solid surfaces might have played an important role in the emergence of primitive cells on the early Earth.

Se alle arbeider i Cristin