Harvard University, Department of Organismic and Evolutionary Biology, jensen@fas.harvard.edu

I am interested in understanding the physical principles that govern flow and transport in biological systems. My current research focus is on building models and simple experiments that help us understand design principles governing vascular transport in plants.

Research interests Fluid mechanics, plant biomechanics, theoretical hydrodynamics, microfluidic lab-on-a-chip experiments. Bio-fluids: vascular transport in plants, biomimicking microfluidic experiments, osmosis.

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Contact

• email: jensen@fas.harvard.edu
• tel: +1 617 496 3580 / +1 857 756 2403

Peer reviewed publications

These publications are provided to the academic community for use in teaching and research. All copyrights remain with the appropriate parties as listed in the publications themselves.

1. The efficiency of osmotic pipe flows K. H. Jensen, L. S. Haaning, C. Hélix-Nielsen, K. Berg-Sørensen, T. Bohr. Physical Review E (In press, 2013)
2. Optimal concentrations in transport systems K. H. Jensen, W. Kim, N. M. Holbrook, and J. M. W. Bush. Journal of the Royal Society Interface 10(83) 20130138 (2013) (journal)
3. Optimal concentration for sugar transport in plants K. H. Jensen, J. A. Savage, and N. M. Holbrook. Journal of the Royal Society Interface 10(83) 20130055 (2013) (journal,cover,press)
4. Physical Limits to Leaf Size in Tall Trees K. H. Jensen and M. A. Zwieniecki. Physical Review Letters 110, 018104 (2013) (journal,press)
5. Modeling the hydrodynamics of phloem sieve plates K. H. Jensen, D. L. Mullendore, N. M. Holbrook, T. Bohr, M. Knoblauch and H. Bruus. Frontiers in Plant Science: Plant Biophysics and Modeling 3, 151 (2012). (pdf,journal)
6. Analytic solutions and universal properties of sugar loading models in Munch phloem flow K. H. Jensen, K. Berg-Sørensen, S. M. M. Friis and T. Bohr. Journal of Theoretical Biology 304, 286–296 (2012). (pdf, journal)
7. Universality of phloem transport in seed plants K. H. Jensen, J. Liesche, T. Bohr and A. Schulz. Plant Cell & Environment 35(6), 1065–1076 (2012). (pdf,cover,journal)
8. Phloem Ultrastructure and Pressure Flow: Sieve-Element-Occlusion-Related Agglomerations Do Not Affect Translocation D. R. Froelich, D. L. Mullendore, K. H. Jensen, T. J. Ross-Elliott, J. A. Anstead, G. A. Thompson, H. C. Pelissier, and M. Knoblauch, , Plant Cell 23, 4428-4445 (2011). (pdf,cover,journal)
9. Optimality of the Münch mechanism for translocation of sugars in plants K. H. Jensen, J. Lee, T. Bohr, H. Bruus, N. M. Holbrook, and M. A. Zwieniecki.  Journal of the Royal Society Interface 8, 1155-1165 (2011).(pdf,journal)
10. Self-consistent unstirred layers in osmotically driven flows K. H. Jensen, T. Bohr, and H. Bruus. Journal of Fluid Mechanics 662, 197-208 (2010). (pdf,journal)
11. Osmotically driven pipe flows and their relation to sugar transport in plants K. H. Jensen, E. Rio, R. Hansen, C. Clanet and T. Bohr. Journal of Fluid Mechanics 636, 371-396 (2009). (pdf,journal)
12. Osmotically driven flows in microchannels separated by a semipermeable membrane K. H. Jensen, J. Lee, T. Bohr, and H. Bruus. Lab on a Chip 9, 2093-2099 (2009). (pdf,journal)
13. Slow-light enhanced light–matter interactions with applications to gas sensing K. H. Jensen, M.N. Alam, B. Scherer, A. Lambrecht and N.A. Mortensen,  Optics Communications 281(21) 5335-5339 (2008). (pdf,journal)
14. Polygons on a Rotating Fluid Surface T. R. N. Jansson, M. P. Haspang, K. H. Jensen, P. Hersen, and T. Bohr. Physical Review Letters 96, 174502 (2006). (pdf,journal)

PhD thesis

1. Osmotically driven flows in microfluidic systems and their relation to sugar transport in plants K. H. Jensen, Technical University of Denmark. Advisors: Henrik Bruus and Tomas Bohr (2011). (pdf)

Master (MSc) thesis

1. Osmotically driven flows and their relation to sugar transport in plants K. H. Jensen, The Niels Bohr Institute, The University of Copenhagen. Advisors: Tomas Bohr and Mogens Høgh Jensen (2007). (pdf)

Bachelor (BSc) thesis

1. Symmetry breaking in the free surface of rotating fluids with high Reynolds numbers K. H. Jensen, T. R. N. Jansson and M. P. Haspang  The University of Copenhagen. Advisor: Tomas Bohr (2005). (pdf)

Select conference contributions

1. K.H. Jensen, J. Lee, T. Bohr, J. Lee, N. M. Holbrook, M. Zwieniecki, Optimality of the Münch hypothesis for translocation of sugars in plants, International Conference on Plant Vascular Biology 2010, Colombus, USA. (2010)
2. K.H. Jensen, T. Bohr and H. Bruus, Concentration boundary layers in osmotic membrane transport processes, Annual Meeting of the APS Division of Fluid Dynamics, Minneapolis, USA, Paper MF.00002. Bull. Amer. Phys. Soc. 54 (19) (2009).
3. K.H. Jensen, T. Bohr and H. Bruus, Osmotically driven flows in microchannels and their relation to sugar transport in plants, 1st Nordic Meeting in Physics, Copenhagen, Paper BF.4 (2009).
4. E. Rio, R. Hansen, K.H. Jensen, T. Bohr and C. Clanet, Osmotically driven pipe flows, Annual Meeting of the APS Division of Fluid Dynamics, Tampa Bay,Paper GA.00004. Bull. Amer. Phys. Soc. 51(9) (2006).
5. T. Bohr, P. Hersen, T. R. N. Jansson, M. P. Haspang and K. H. Jensen, Polygons on a Rotating Fluid Surface, The 6th Euromech Fluid Mechanics Conference, Stockholm (2006).
6. T. R. N. Jansson, M. P. Haspang, K. H. Jensen, P.  Hersen and T. Bohr, Polygons on a Rotating Fluid Surface, Second International Symposium on Instability and Bifurcations in Fluid Dynamics, Copenhagen (2006).

Popular science

1. K. H. Jensen og T. R. N. Jansson, Open source programmer til videnskabelig brug, Gamma 140 (2005).
2. Synkronisering af vejrtrækning og hjerteslag, Gamma 145 (2007).
3. Celler og flokdyr, Gamma 144 (2006).
4. Partikelfiltre baseret på nanorør, Gamma 142 (2006).
5. Kritikalitet i arktiemarkedet, Gamma, 141 (2006).
6. Kaoskryptering, Gamma, 140 (2005).
7. Myten om kviksand lagt på hylden, Gamma 139 (2005).
8. Vejer et kilo ét kilo? ­­ Om kilogrammets historie, Gamma 138 (2005).
9. Luftbobler mindsker gnidningsmodstant i vand, Gamma 137 (2005).
10. Antenne til synligt lys, Gamma 135 (2004).
11. Paritetsbrud i elektron­elektron spredning, Gamma 134 (2004).
12. Grundstof nummer 115 fundet, Gamma 133 (2004).
13. Relativitetsteorien kompatibel med kaosteorien, Gamma 132 (2003).
14. Gravitationshastigheden forsøgt målt, Gamma 129 (2003).
15. Dommedag udsat – indtil videre, Gamma 127 (2002).
16. Bohrs breve til Heisenberg offentliggjort, Gamma 125 (2002).
17. Mars Odyssey, Gamma 124 (2001).

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