# Ptychographic characterization of polymer compound refractive lenses manufactured by additive technology

## TL;DR

This paper demonstrates the use of two-photon polymerization lithography to manufacture and characterize high-precision polymer compound refractive lenses with complex geometries for X-ray applications.

## Contribution

It introduces a novel application of two-photon lithography for fabricating and analyzing polymer CRLs with detailed characterization of their structures.

## Key findings

- Successful fabrication of polymer CRLs with high geometric accuracy
- Effective characterization methods for polymer CRLs
- Potential for advanced X-ray lens applications

## Abstract

The recent success in the development of high precision printing techniques allows one to manufacture free-standing polymer structures of high quality. Two-photon polymerization lithography is a mask-less technique with down to 100 {\mu}m resolution that provides full geometric freedom. It has recently been applied to the nanofabrication of X-ray compound refractive lenses (CRLs). In this article we report on the characterization of two sets of CRLs of different design produced by two-photon polymerization induced lithography.