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Sinusoidal phase grating created by a tunably buckled surface
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color) (a)–(c) AFM micrographs of PS-coated silicone sheet as a function of strain. (a) At zero strain, the surface is flat. (b) At a strain of 0.010 (arrows show compression direction), the surface abruptly wrinkles with an amplitude and wavelength of 0.08 and , respectively. (c) At a strain of 0.073, the amplitude has nonlinearly increased to . (d) Amplitude vs strain as measured from AFM images [data indicated by red circles, fit in black]. Amplitude calculated from model is shown in blue. The experimental uncertainty, taken as one standard deviation, is comparable to symbol size.

Image of FIG. 2.
FIG. 2.

(Color) Normalized SALS data as a function of strain . The zeroth, first, second, and third orders (red, green, blue, and orange, respectively) can be seen to cycle through maxima and minima as the strain (hence, amplitude ) increases.

Image of FIG. 3.
FIG. 3.

(Color) (a) Normalized intensities of the zeroth-, first-, second-, and third-order diffraction peaks (plotted in red, green, blue, and orange, respectively) as a function of wrinkling amplitude. Each order exhibits at least one minima. The zeroth order has decreased by three orders of magnitude at its point of minimum intensity . (b) Modeled diffraction pattern showing good agreement with data.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Sinusoidal phase grating created by a tunably buckled surface