New sensing method expands label-free particle detection beyond sensor surfaces

by Minerva Pappu, Washington University in St. Louis

edited by Swati Mestri , reviewed by Andrew Zinin

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Add to Preferred Sources Lan Yang’s lab unlocked new capabilities for whispering-gallery-mode-based sensors by extending its sensing range beyond the immediate surface, while preserving the exceptional sensitivity that has made these sensors so powerful. This can potentially open entirely new sensing modalities and applications. Credit: Yang lab Finding a single cancer cell in a tube of blood is a bit like finding a needle in a haystack. As researchers seek to detect ever-smaller and rarer targets, from viruses to circulating tumor cells in blood, the demand for ultrasensitive, robust sensors that are practical for real-world samples continues to grow.