Publications (undergraduate students indicated by *)
J.K. Thomas* and E.H. Hellen. 2008. The Approach to Stability for Delayed Feedback Control of Chaos for 1-dimensional Maps. Eprint: http://arxiv.org/abs/0807.2637
J.L. Lancaster* and E.H. Hellen. 2008. Modeling Excitable Systems. Eprint: http://arxiv.org/abs/0807.451
Peer Reviewed Journal Articles
Hellen, E.H., and M.J. Lanctot*. 2007. Nonlinear damping of the LC circuit using anti-parallel diodes. Am. J. Phys. 75, 326-330. Eprint: http://arxiv.org/abs/physics/0606261
Hellen, E.H. 2005. Pade-Laplace analysis of signal averaged voltage decays obtained from a simple circuit. Am. J. Phys. 73, 871-875.
Hellen, E.H. 2004. Real-time finite difference bifurcation diagrams from analog electronic circuits. Am. J. Phys. 72, 499-502.
Hellen, E.H. 2003. Verifying the diode-capacitor circuit voltage decay. Am. J. Phys. 71, 797-800.
Roettger, B.F., E.H. Hellen, T.P. Burghardt, and L.J. Miller. 2001. Multiple ligand and cell-dependent states of lateral mobility of plasmalemmal G protein-coupled cholecystokinin receptors. J. Fluorescence. 11:237-246.
Hellen, E.H., B. Yacono, and P.R. Pratap. 1998. Transient kinetics and thermodynamics of anthroylouabain binding to Na/K-ATPase. Biophysical Chemistry 71, 245-253.
Hellen, E. H., and P.R. Pratap. 1997. Nucleotide binding to IAF-labeled Na+/K+-ATPase measured by steady state fluorescence quenching by TNP-ADP. Biophysical Chemistry 69, 107-124.
Pratap, P.R., E.H. Hellen, A. Palit, and J.D. Robinson. 1997. Transient kinetics of substrate binding to Na+/K+-ATPase measured by fluorescence quenching. Biophysical Chemistry 69, 137-151.
Hellen, E. H., K. Ajtai, and T. P. Burghardt. 1995. Myosin head rotation in muscle fibers measured using polarized fluorescence photobleaching recovery. J. Flourescence 5, 355-367.
Roettger, B. F., R. U. Rentsch, E. M. Hadac, E. H. Hellen, T. P. Burghardt, and L. J. Miller. 1995. Insulation of a G-protein-coupled receptor on the plasmalemmal surface of the pancreatic acinar cell. J. Cell Biol. 130, 579-590.
Hellen, E. H., and T. P. Burghardt. 1994. Saturation effects in polarized fluorescence photobleaching recovery and steady state fluorescence polarization. Biophys. J. 66, 891-897.
Hellen, E. H., and D. Axelrod. 1991. Kinetics of epidermal growth factor/receptor binding on cells measured by total internal reflection/fluoresence recovery after photobleaching. J. Fluorescence 1, 113-128.
Hellen, E. H., and D. Axelrod. 1990. An automatic focus-hold system for optical microscopes. Rev. Sci. Instrum. 61, 3722-3725.
Hellen, E. H., and D. Axelrod. 1987. Fluorescence emission at dielectric and metal-film interfaces. J. Opt. Soc. Am. B 4, 337-350.
Book chapters, meeting proceedings
Hellen, E.H., B. Yacono, and P.R. Pratap. 2000. Kinetics and thermodynamics of enzyme-ouabain interactions. In: Na/K-ATPase and Related ATPases, ed. Taniguchi and Kaya, Elsevier Science. 729-732.
Hellen, E.H., and P.R. Pratap. 1997. Fluorescence quenching of IAF-Na/K ATPase via energy transfer to TNP labeled nucleotide. Ann-N-Y-Acad-Sci. 834, 439-441.
Pratap, P.R., E.H. Hellen, and A. Palit. 1997. Binding of TNP-ATP to IAF-labeled Na+/K+-ATPase as examined by fluorescence quenching. Ann-N-Y-Acad-Sci. 834, 445-448.
Axelrod, D., E. H. Hellen, and R. M. Fulbright. 1992. Total internal reflection fluorescence. In: Topics in Fluorescence Spectroscopy, Vol. 3, Biochemical Applications, ed. J. Lakowicz, Plenum Press, pp. 289-343.
Axelrod, D., and E. H. Hellen. 1989. Emission of fluorescence at an interface. In: Fluorescence Microscopy of Living Cells in Culture, ed. L. Taylor, Meth. Cell Biol. 30, Academic Press, pp. 399-416.
Hellen, E. H., R. M. Fulbright, and D. Axelrod. 1988. Total internal reflection fluorescence: theory and applications at biosurfaces. In: Spectroscopic Membrane Probes, ed. L. Loew, CRC, Boca Raton, pp. 47-79.
Axelrod, D., E. H. Hellen, and R. M. Fulbright. 1987. Biomolecular motion on surfaces and membranes. In: Lasers in Medicine, eds. S. N. Jaffe, J. A. Parrish and R. S. Scott, Proc. SPIE 712, 144-148.
Axelrod, D., R. M. Fulbright, and E. H. Hellen. 1986. Adsorption kinetics on biological membranes: Measurement by total internal reflection fluorescence. In: Applications of Fluorescence in the Biomedical Sciences, eds. L. Taylor, A. S. Waggoner, F. Lanni, R. F. Murphy and R. Birge, Alan R. Liss, NY, pp. 461-467.