Revolutionary Diamond Sensors Offer New Insights into Cellular Temperature Detection
The University of Iowa, in collaboration with the University of Chicago, has pioneered a cutting-edge method using nano-sized diamond sensors to identify temperature changes within cells. This breakthrough holds promise for enhancing disease diagnosis, particularly in detecting cancer.
These sensors operate based on quantum physics, an area where atoms and subatomic particles behave in unexpected ways. This field offers vast potential across numerous applications, such as computing, medical imaging, navigation, and creating advanced sensors.
Traditionally, scientists have employed nanodiamonds as thermometers within cells, assuming that shifts in the energy levels were solely due to temperature changes. However, the research group uncovered an additional factor: the diamond’s surface also influenced these shifts.
Why It Matters
Diamond-based quantum sensors, which utilize specific defects within diamonds for detection and measurement, offer scientists a tool to detect minute cellular changes associated with diseases like cancer. This study could lay the groundwork for more precise biomedical research tools and potentially future diagnostic technologies.
The implications of this research are significant, suggesting that diamond-based quantum sensors could lead to more accurate cellular temperature readings. This, in turn, could provide insights into early disease development and cellular changes.
Denis Candido, an assistant professor at the University of Iowa and co-corresponding author, contributed the theoretical framework for the experiments. “This research lays out an important framework for distinguishing between changes in temperature and electric field signal from these sensors, thereby improving the accuracy of temperature sensing in cells with nanodiamonds,” Candido states.
The research team also addressed a long-standing puzzle in the scientific community. Prior research suggested energy-level shifts indicated unrealistic temperature changes within cells, ranging from 2 to 18 degrees Fahrenheit. Candido comments, “Unraveling the wide energy-level shifts was very important for advancing the capability of these sensors. Not only that, but we established that our approach is necessary to obtain accurate temperature readings with nanodiamonds.”
The study, titled “Probing cellular activity via charge-sensitive quantum nanoprobes,” was published in the journal Advanced Materials.
Alongside Candido, Aaron Esser-Kahn and Peter Maurer from the University of Chicago served as co-corresponding authors. Michael Flatté, a professor in Iowa’s Department of Physics and Astronomy, also contributed to the study.
Additional authors from the University of Chicago include Uri Zvi, Shivam Mundhra, David Ovetsky, Qing Chen, Aidan Jones, Stella Wang, Maria Román-Vazquez, Marie Kim, Udoka Ibeh, Michele Ferro, Kunle Odunsi, Marina Garassino, and Melody Swartz.
The research received funding from the National Science Foundation, the National Institutes of Health, and the U.S. Department of Energy.
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