This month, we would like to revisit the oft discussed subject of sample matrices and their role in the development of sensors. As you will know, the sample matrix is an issue close to the heart of our journal. Indeed, upon submission of any manuscript to ACS Sensors, authors will be reminded that “papers should demonstrate the use of the sensor in complex samples appropriate to the application...”

This year we are lamenting the loss of Otto Wolfbeis and Raoul Kopelman, who both made important contributions to the optical sensor sciences. Our Associate Editor Heather Clark will devote a future editorial to Raoul, so let me share some personal thoughts about Otto in this piece. I have not worked personally with Otto, but his presence was felt throughout my career. As a doctoral student in the

On October 4th 2023, the Nobel Prize committee announced the winners of the 2023 Nobel Prize in Chemistry were Moungi Bawendi from MIT, Louis Brus from Colombia University, and Alexei Ekimov from Nanocrystals Technology Inc. in New York, for the discovery and development of quantum dots. In analysis, we are all familiar with quantum dots as optically active nanoparticles where the luminescence properties