On-line analysis of exhaled breath offers insight into a person's metabolism without the need
for sample preparation or sample collection. Due to its noninvasive nature and the possibility …

Breath analysis is a promising field with great potential for non-invasive diagnosis of a
number of disease states. Analysis of the concentrations of volatile organic compounds …

Nonlinear optical frequency conversion is one of the most versatile methods to generate
wavelength-tunable laser light in the mid-infrared region. This spectral region is particularly …

We present a compact sensor for carbon monoxide (CO) in air and exhaled breath based on
a room temperature interband cascade laser (ICL) operating at 4.69 µm, a low-volume …

The detection of volatile organic compounds (VOCs) has emerged as one of the most
promising diagnostic approaches in the field of medicine. For example, human breath …

Ammonia concentrations in exhaled breath (eNH 3) and skin gas of 20 healthy subjects
were measured on-line with a commercial cavity ring-down spectrometer and compared to …

Profiling the body chemistry by means of volatile organic compounds (VOCs) in the breath
opens exciting new avenues in medical diagnostics. Gas sensors could provide ideal …

Early diagnosis of lung cancer greatly improves the likelihood of survival and remission, but
limitations in existing technologies like low-dose computed tomography have prevented the …

Breath exhaled hydrogen cyanide (HCN) has been identified to be associated with several
respiratory diseases. Accurately distinguishing the concentration and release rate of …

Hydrogen cyanide (HCN) is a well-known toxic compound in many fields. The trace amount
of endogenous HCN in human exhalation has been associated with the presence of …