AI Insight
Researchers at Harvard's School of Engineering and Applied Sciences have developed a highly sensitive calorimeter capable of detecting metabolic heat signals as small as 100 picowatts in living cells. This device measures the tiny amounts of heat that cells release during growth, division, or drug response, which were previously too small to measure directly. The technology enables direct observation of cellular metabolism through heat signatures.
Why it matters
This breakthrough could revolutionize antibiotic testing by quickly determining drug effectiveness through heat measurements rather than waiting for visible bacterial growth. The technology may also provide new insights into cellular metabolism and disease processes, offering a faster and more direct method to study how cells respond to various treatments and environmental conditions.
Understand the Science
When living cells grow, divide or respond to drugs, they give off tiny amounts of heat that offer information about what the cells are doing. But because these heat signals are so vanishingly small, they have traditionally been impossible to measure directly. Researchers in the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a calorimeter—a device that measures the heat transfer between a living system and its environment—that can detect metabolic heat signals on the order of 100 picowatts, or trillionths of a watt, in living cells.
Source: A heat sensor for living cells could offer new views of cell metabolism, rapid antibiotic testing