In recent times, the need for high-sensitive detection has grown drastically as more and
more applications of molecular sensing are being explored. Cavity ring-down spectroscopy …

Detection of biomarkers in exhaled breath has been gaining increasing attention as a tool
for diagnosis of specific diseases. However, rapid and accurate quantification of biomarkers …

Cavity ring-down spectroscopy (CRDS), first pioneered in 1988 by O'Keefe and Deacon, 1
has evolved into a newgeneration, precision spectroscopy in recent years and subsequently …

Exposure to low to moderate arsenic (As) levels has been associated with type 2 diabetes
(T2D) and other chronic diseases in American Indian communities. Prenatal exposure to As …

We demonstrate for the first time the measurement of CO2 isotope ratios (13C/12C and
18O/16O) in a hollow waveguide (HWG) fiber using a mid-infrared heterodyne phase …

Human carbonic anhydrases (CAs) have become a well-recognized target for the design of
inhibitors and activators with biomedical applications. Accordingly, an enormous amount of …

Cavity-enhanced absorption spectroscopies (CEAS) have gained importance in a wide
range of applications in molecular spectroscopy. The development of optical sensors based …

Real-time measuring of CO2 isotopes (13CO2, 12CO2, and 18OC16O) in exhaled breath
using a mid-infrared hollow waveguide gas sensor incorporating a 2.73 μm distributed …

A hollow waveguide (HWG) based mid-infrared gas sensor using a 2.73 µm distributed
feedback (DFB) laser was developed for simultaneously measuring the concentration …

Previous research revealed that isotopes 13C and 18O of exhaled CO2 have the potential
link with Helicobacter pylori; however, the 17O isotope has received very little attention. We …