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 co...
Source: [Phys.org](https://phys.org/news/2026-10-method-free-particle-sensor-surfaces.html)