The gratings
We are offering for the educational university field a kit of 10 high quality chromium-glass masks with 4 different diffraction gratings on each one.
The diffraction gratings are made using optical lithography with 0.8 µm resolution with our direct laser writer.
The masks are packaged in a custom made box that facilitates handling and care for the students.
Diffraction patterns in the kit are designed to guide the student step by step for the different aspects of optic diffraction and interference effects.
What the kit contains
- Single and multiple slits diffraction gratings (up to 4 slits).
- “N” slit diffraction gratings, one dimensional and two dimensional.
- Diffraction gratings with structure factor.
- Complex diffraction gratings for a more advanced analysis.
- The complete DNA experience
One-dimensional gratings
Unidimensional gratings allow the student to get familiar with the concept of interference and allow them to obtain easy to calculate and easy to verify diffraction patterns.
We include from one to four slit gratings and an "N" slit pattern with two different spacings.
Two-dimensional gratings
Material science lattices
Bi-dimensional diffraction gratings are designed to introduce the student to the use of X-Ray diffraction to analyze the structure of crystalline solids. The kit presents different “crystalline structures” (squares, triangular and graphene like structures).
Complex gratings
On the kit we also include more advanced gratings, these are designed so that the student can grasp on a more qualitative and intuitive understanding of the concept of Fourier transforms and how different properties of the designs translate to the reciprocal space
DNA experience
The kit also presents different diffraction patterns to understand and reproduce at the optic scale, the experience done by Rosalind Franklin that helped to decoy the DNA structure by James Watson and Francis Crick. A selection of diffraction gratings with different elements of the DNA structure and with different characteristic lengths allow to understand the phenomena qualitatively with the possibility to do some interesting quantitative analysis.
