New Sensor Can Diagnose Disease Through Bad Breath | Be Korea-savvy

New Sensor Can Diagnose Disease Through Bad Breath

(image: Korea Bizwire)

(image: Korea Bizwire)

DAEJEON, July 30 (Korea Bizwire)A South Korean research team has developed a gas sensor platform that can diagnose disease by analyzing bad breath.

A joint research team from the Korea Advanced Institute of Science and Technology and the Samsung Advanced Institute of Technology developed a platform that selectively detects a tiny amount of disease-related biomarker gas contained in exhalation to monitor disease in real time.

The research team greatly enhanced the detection function by mixing sodium and platinum catalysts that have a high reactivity to hydrogen sulfide, a biometric marker discharged in a high density state from bad breath patients, with a metallic oxide nanoparticle that has a wide specific surface area.

The research team explained that the gas sensor was 780 times more sensitive to 1 parts per million (ppm) hydrogen sulfide and 277 times more sensitive to ethanol gas.

By combining the newly-developed gas sensor with other sensors specializing in pressure, temperature and humidity detection, the research team developed a portable compound sensor platform that can monitor an individual’s health through their breath.

After about 80 exhalation analyses, the device correctly identified bad breath with an accuracy rate of 86.3 percent.

J. S. Shin (

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