Metasurface Solves Calculus Problems as Analog Computer

Posted by vinchuco on Monday January 12, 2015 @03:20PM
from the phys.org dept.

( 2 comments | 41 points | on HN )

Re:Metasurface Solves Calculus Problems as Analog Computer by fferen on Monday January 12, 2015 @10:04PM (#8877886)

Basic idea:

- A lens acts as a Fourier transform on an optical signal.

- d/dx is multiplication by ik in the frequency domain.

- They made a spatial reflection profile r(x) ~ ix using an array of nanobricks of different sizes (optimized with simulation)

- Optical signal -> lens -> reflection from metasurface -> lens = spatial derivative.

I have the paper if anyone wants it and doesn't have access.

[ Parent | on HN ]

Re:Metasurface Solves Calculus Problems as Analog Computer by Church- on Tuesday January 13, 2015 @10:28AM (#8880399)

I'd like it if you get the chance.

[ Parent | on HN ]