Hydrogels created using carbon dioxide (CO₂) offer a safer alternative to those formed with acidic agents. While most research has focused on pre-gelation conditions affecting hydrogel properties, this study by researchers from Tokyo University of Science explores the impact of CO₂ release after gelation. The team prepared alginate-based hydrogels and found that faster CO₂ release decreases crosslinking, while slower release results in stiffer hydrogels. These findings could lead to improved hydrogels for medical applications.

Researchers have developed a highly sensitive detector for identifying molecules via their infrared vibrational “fingerprint”. Published in Nature Communications, this innovative detector converts incident infrared light into ultra-confined "nanolight" in the form of phonon polaritons within the detector´s active area. This mechanism serves two crucial purposes: it boosts the overall detector´s sensitivity and enhances the vibrational fingerprint of nanometer-thin molecular layer placed on top of the detector, allowing this molecular fingerprint to be more easily detected and analyzed. The compact design and room-temperature operation of the device hold promise for developing ultra-compact platforms for molecular and gas sensing applications.

Researchers at SwissFEL have successfully demonstrated new technologies that improve the temporal coherence of XFEL pulses