Paper 13354-42
Paper 13354-42
DMD-based optical printing of PHEMA hydrogel gratings for sensitive and rapid alcohol sensing
On demand | Presented live 28 January 2025 
Abstract
A controllable and cost-effective optical printing system was developed using a Digital Micromirror Device (DMD) for the rapid fabrication of photosensitive polymers. This system supports a wide range of materials and allows for the customization of microstructures, making it a versatile platform for physical, chemical, and biological sensing applications. High-resolution hydrogel sensors, based on poly (2-hydroxyethyl methacrylate) (PHEMA), were fabricated for alcohol detection. These sensors exhibited significant changes in diffraction efficiency upon alcohol exposure, with low detection limits, fast response times, and excellent repeatability.
Presenter
Jing Xu
KU Leuven (Belgium)
Jing is currently a Ph.D. candidate at KU Leuven, specializing in advanced microfabrication techniques. Their research focuses on the implementation of Digital Micromirror Device (DMD)-based optical printing systems for photosensitive materials, such as polymers and stimuli-responsive hydrogels. Jing has been involved in several research projects, including the fabrication of high-performance gratings, alcohol sensors, and chiral structures. Their work aims to develop an easy and cost-effective method to advance the field of material science, with a particular emphasis on responsive materials and precise high-resolution patterning.