Self Assembly

Problem 11 from IYPT 2019

See the Reference

Al_compressed.mp4

Binary Image Time-lapse Evolution

TimeLapse_20.mp4

Reciprocal Lattice

Apply fft2 2D Fourier transformation. It can be visualized how the long-range periodicity is established over time.

TimeLapse_20_fft.mp4

Original video, particle recognition & tracing result, and superposition mask.

original

order_compressed.mp4

After particle recognition & tracing

order_tracing_color.mp4

superposition

order_tracing_superposition.mp4

Polygon Vortex

Problem 12 of from IYPT 2020

Watch background Video

Please use Geogebra to open and view the file FFT/Fourier.ggb The rest of the files are all MATLAB.

FFT Application in Optics