1. Upload your scan
Use an XRDML file or a data table. Preview the curve and Fourier spectrum without using an analysis credit.
Beta · X‑ray reflectivity · access on request
Understand your XRR data.
Fit thin films and periodic multilayers from an X-ray reflectivity scan. Describe your sample, compare the fitted curve with your data, and download a report of the results and their limitations.
By REX-Optics, University of Twente spin-off — built for the scans we fit every day.
HOW IT WORKS
From scan to fit
2. Describe the sample
Enter the substrate and layers, or use a text description. Approximate thicknesses help; unknown details can stay unknown.
3. Review the result
See the fitted curve, the layer table and what the data could not resolve. If more information is needed, answer within the same analysis. Download the report when it is ready.
WHAT IT CAN TELL YOU
Thickness, density and interfaces
REX Analyze uses AI to choose candidate structures, ask follow-up questions and write the interpretation; the fits and the numbers in the report come from our own numerical code. It supports single films and periodic multilayers, including structures with caps and barriers.
A close fit does not always identify a unique structure. The report marks each value as fitted, fixed or poorly constrained, and does not quote ± uncertainties. In multilayers, the repeat period can be clear even when individual barrier thicknesses are not.
Which measurement details are needed?
Tables need an angle or q axis and the X-ray wavelength. XRDML files often contain these details. You do not need to know every instrument setting or interface in advance.
How does the Fourier preview help?
Peaks suggest distances between interfaces or a multilayer period. They help initialize the fit; they are not a direct picture of the layer structure. Very thin or low-contrast films may have no reliable peak.
ACCESS AND PRICE
Try it with your own data
Beta access
5 trial analyses
Available by request. Tell us what you measure and which email you would like to use.
Request accessAnalysis pack · coming later
€15 / 20 analyses
Excluding VAT. No subscription. Packs are not available to purchase yet.
Groups and labs
Let's talk
Shared allowances for a research group or a metrology lab, and questions about data handling.
Contact usOne analysis covers one scan and its follow-up questions. Preview is free. Technical failures return the credit; an inconclusive scientific result still counts. Prices are shown excluding VAT; when packs go on sale, the applicable VAT is added at checkout and consumer prices are shown including it.
YOUR DATA
Know what you are sharing
REX-Optics stores your uploaded files and reports for 30 days. Your sample description and evidence from the scan are sent to an AI provider for analysis. You can delete your files and reports sooner from your account.
Request beta access
Send us your sign-in email and a short description of your samples.
Request access by emailAlready have access? Open the analyzer.