title: Note: On the power spectrum of undulations of simulated bilayers.
abstract: The best finite Fourier series for a smooth surface h(x, y), closest to the positions of heads of amphiphiles in the least-square sense, agrees fully with the Fourier coefficients obtained by a direct summation over raw data points. Both methods produce structure factors S(q) containing all necessary features: small-q divergence, a minimum, the raise to the ubiquitous nearest-neighbor peak near q = 2π∕(coll.diameter) and further peaks. The Laurent series is also discussed.
authors.forename: J
authors.initials: J
authors.lastname: Stecki