The University of Surrey has introduced a breakthrough in flexible X-ray detectors that are cost-effective and mimic human tissue, offering significant advancements over traditional, rigid detectors in medical and security applications. Credit: University of Surrey
New tissue-equivalent materials developed at the University of Surrey could pave the way for a new generation of flexible X-ray detectors, with potential applications ranging from cancer treatment to better airport scanners.
Traditionally, X-ray detectors are made of heavy, rigid materials such as silicon or germanium. New, flexible detectors are cheaper and can be shaped around the objects that need to be scanned, improving
Breakthrough in X-ray Detector Technology
Dr. Prabodhi Nanayakkara, who led the research at the University of Surrey, said: “This new material is flexible, low-cost, and sensitive. But what’s exciting is that this material is tissue equivalent. This paves the way for live dosimetry, which just isn’t possible with current technology.”
Most of the X-ray detectors on the market today are heavy, rigid, energy-consuming, and expensive if a large area needs to be covered.
Substances built up of hydrogen and carbon, known as organic
Innovative Developments and Applications
To solve this challenge, scientists at the University of Surrey’s Advanced Technology Institute created devices based on an ink by adding low quantities of high atomic number elements to an organic semiconductor.
Building on the team’s previous research in this field, their new detector behaves more like human tissue under X-rays, which could lead to new, safer techniques for administering radiotherapy, mammography, and radiography. Their findings are published in the journal Advanced Science.
Professor Ravi Silva, director of Surrey’s Advanced Technology Institute, said: “This new technology could be used in a variety of settings, such as radiotherapy, scanning historical artifacts and in security scanners. The University of Surrey together with its spin-out SilverRay Ltd continues to lead the way in flexible X-ray detectors – we’re pleased to see the technology shows real promise for a range of uses.”
Co-author, Professor Martin Heeney,
Reference: “Tissue Equivalent Curved Organic X-ray Detectors Utilizing High Atomic Number Polythiophene Analogues” by M. Prabodhi A. Nanayakkara, Qiao He, Arvydas Ruseckas, Anushanth Karalasingam, Lidija Matjacic, Mateus G. Masteghin, Laura Basiricò, Ilaria Fratelli, Andrea Ciavatti, Rachel C. Kilbride, Sandra Jenatsch, Andrew J. Parnell, Beatrice Fraboni, Andrew Nisbet, Martin Heeney, K. D. G. Imalka Jayawardena and S. Ravi P. Silva, 2 November 2023, Advanced Science.
DOI: 10.1002/advs.202304261