Patent ID: 11867595
Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. A method for measuring a three-dimensional nanostructure on a flat substrate comprising:
emitting an X-ray of one wavelength in a multi-wavelength range of 0.154 nm-20 nm;
controlling a focus distance of an X-ray reflector including multiple minors or an X-ray monochromator such that the focus distance is ≥150 mm, so that the X-ray is point focused on a sample surface from an incident angle ≥24° and a footprint of the focused X-ray is less than or equal to 10 μm×25 μm;
controlling the focused X-ray by an incident slit to change a divergence angle, and the incident slit is an aperture optical element or a slit element that is controlled in at least one direction;
collecting reflecting and scattering signals from the sample surface by an X-ray detector, which includes a 2-dimensional X-ray sensor inside a vacuum chamber and an analyzer outside the vacuum chamber, and a size of the sensor collects the scattering and reflecting signals completely; and
controlling the 2-dimensional X-ray sensor to move on a z-axis with the incident angle of the focused X-ray for collecting the scattering and reflecting signals.