In mammals, physiological respiration involves respiratory cycles of inhaled and exhaled
breaths, which has traditionally been an underutilized resource potentially encompassing a …

Respiratory rate (RR) is an important physiological parameter whose abnormality has been
regarded as an important indicator of serious illness. In order to make RR monitoring simple …

Sensors and biosensors have found applications in many areas, eg, in medicine and clinical
diagnostics, or in environmental monitoring. To expand this field, nanotechnology has been …

Respiration is an important physiological process of human body that can not only act as
vital signs for physical health management or “biomarkers” of some diseases, but also as a …

Respiratory disease can be early warned by many respiratory parameters such as intensity,
rhythm, temperature, and breath molecules like acetone. It requires a complex process to …

Electronic noses (e-noses) are devices based on combining different gas sensors'
responses to a given sample for identifying specific odor fingerprints. In recent years, this …

Recently, flexible strain sensors with excellent stretchability and sensitivity have attracted
increasing interests. Most flexible strain sensors have multifunctional applications in human …

Various materials have been successfully applied in commercial humidity sensors, but their
response/recovery time and sensitivity need to be improved. In this paper, a novel humidity …

Friction and wear decrease the efficiency and lifetimes of mechanical devices. Solving this
problem will potentially lead to a significant reduction in global energy consumption. We …

The efficiency and lifetime of mechanical devices is significantly decreased by friction and
wear, significantly contributing to global energy consumption. We previously showed that …