Energy and thickness ranges

Select the energy and thickness range for the calculations and plotting.

Preset Ranges:
Energy range [keV]:
to
Thickness [nm]:
to

Fresnel zone plate designs

Define the Fresnel zone plate design parameters for the calculations and plotting.

#RemoveMain
Energy
[keV]		 Structure
type		Contrast
Material		Duty
cycle§
[%]		Zone
Thickness
[nm]		 Outermost
Zone
Width
[nm]		Diameter
[μm]		 Membrane
Material		Membrane
thickness†
[nm]		 Input
Efficiency*
[%]		Maximum
Efficiency*
[%]		Optimal
Thickness‡
[nm]		 π-phase
shift
optimal
thickness
[nm]		Number
of
Zones
Focal
Length
[mm]		 Depth
of
Focus
[±mm]		Numerical
Aperture		Spatial
Resolution
[nm]		 Aspect
Ratio

Waiting for user input

Use the "Get a Quote" button at the bottom-right of the page to get in touch with the current designs listed.
For production, every design is reviewed by our experts to confirm feasibility and optimize performance.
*The efficiency values presented are based on theoretical calculations. Actual performance may vary slightly due to fabrication tolerances and operating conditions, and our team will optimize designs for your specific application. The maximum efficiency refers to the one achieved with the optimal thickness.
§Duty cycle is the structure width as a percentage of one full binary zone-pair period (50% means equal structure and air widths). For 3-step and 4-step structures, configure the region geometry in the separate multistep section below; binary duty cycle does not apply.
†Standard membrane thicknesses are 100 nm, 200 nm, 250 nm, 500 nm, 1000 nm.
‡The optimal thickness is calculated within the thickness range provided in the inputs.
Advanced multistep geometry (3-step / 4-step)

Configure each region width and material height independently without adding columns to the main table. Presets retain equal widths and evenly spaced heights. For custom designs, the main Zone Thickness indicates the reference for the standard preset; the custom heights specify the actual geometry. Thickness sweeps proportionally scale all heights to the horizontal-axis maximum height.

Spectral Response and Efficiency vs Thickness

Press calculate in the section above to generate the plots for the spectral response and efficiency vs thickness for the defined designs. The plots will update automatically when you modify the design parameters and press calculate again.
The spectral response plot shows the efficiency as a function of photon energy, while the efficiency vs thickness plot shows how the efficiency changes with varying zone thickness for the main design energy.

Transmission Calculations

Define the material parameters for the transmission calculation and plotting.

#RemoveMaterialThickness [nm]

Waiting for user input

Transmission vs Energy

Press calculate in the section above to generate the plot for the transmission vs energy for the defined membrane materials and thicknesses. The plot will update automatically when you modify the parameters and press calculate again. The transmission vs energy plot shows how the transmission of X-rays through the membrane changes with varying photon energy.


Common materials used for zone plates include gold (Au) and nickel (Ni), typically deposited through electroplating processes that require a seed layer—usually 5–20 nm thick and made of chromium or gold. Other materials such as chromium (Cr), ruthenium (Ru), molybdenum (Mo), diamond, silicon dioxide (SiO₂), and PMMA are also used, often fabricated via etching or direct writing methods that do not require a seed layer.
For hard X-ray applications, central zero-order beam stops can either be fabricated directly onto the substrate or precisely aligned and bonded onto the chip.
The refractive index data is provided from the CXRO data.