Investigating the use of exhaled breath analysis to diagnose and monitor different diseases
has attracted much interest in recent years. This review introduces conventionally used …

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 …

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 …

A new coronavirus, SARS-CoV-2, has caused the coronavirus disease-2019 (COVID-19)
epidemic. A rapid and economical method for preliminary screening of COVID-19 may help …

Mid-infrared absorption spectroscopy is a powerful tool to measure and analyze
composition, concentration and structure of substance molecules. Due to the advantages of …

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

Introduction Ulcerative colitis (UC) is a chronic, nonspecific inflammatory disease of the
intestine. The intestinal microbiota is essential in the occurrence and development of UC …

Helicobacter pylori (HP), a common microanaerobic bacteria that lives in the human mouth
and stomach, is reported to infect≈ 50% of the global population. The current diagnostic …

Cavity ring-down spectroscopy (CRDS) is a direct quantitative absorption technique that
utilizes an enhanced light-matter interaction length inside a high-finesse optical resonator …

In the face of the global pandemic caused by severe acute respiratory syndrome coronavirus-
2 (SARS-CoV-2), researchers are tirelessly exploring novel therapeutic approaches to …