Talint EDU: Modular, cost-effective X-ray phase contrast and dark-field imaging kit

Compared with traditional X-ray absorption imaging, X-ray phase contrast imaging provides higher contrast for light-element samples, making it particularly suitable for imaging samples composed of soft tissue and light elements. Among the five main phase contrast imaging methods currently available, most have extremely high requirements for source coherence and can only be realized with synchrotron radiation sources or microfocus X-ray sources. Grating-based phase contrast imaging, after more than a decade of development, has become the mainstream technical approach for implementing phase contrast imaging experiments in the laboratory. However, the fabrication of high-aspect-ratio and large-field-of-view gratings has always been a pain point for researchers. The emergence and maturity of LIGA technology has made the fabrication of such gratings easier and more reliable.

Gratings for X-ray phase contrast imaging utilize the Talbot self-imaging effect to obtain information about the tiny angular deflections of X-rays caused by refraction and scattering. This has potential applications in various fields, from medical imaging to materials research. However, for researchers just entering this field or users who simply want to quickly obtain phase contrast images, the tedious simulation of grating parameters, the high cost of custom grating fabrication, and the selection and precise adjustment of precision translation stages all consume considerable effort.To solve this problem, the German company Microworks has launched a modular, cost-effective X-ray phase contrast and dark-field imaging kit—TALINT EDU

The TALINT EDU system from Microworks is a compact, affordable TALbot interferometer kit. It is an ingenious simplified form of the X-ray Talbot-Lau interferometer, including all necessary hardware to set up and fine-tune the interferometer, as well as to obtain three imaging modes through phase-stepping procedures: absorption imaging, phase contrast imaging, and dark-field imaging.

In less than half an hour, it can be installed as easily as another detector. For this simplified system, image acquisition is manual, and the images obtained during the phase-stepping process are well suited for image analysis scientists.