Physical activity monitoring devices, such as accelerometers, are useful aids to athletes and those exercising to lose weight. However, such devices cannot monitor rest energy expenditures, which is over 75% of daily energy usage. For those seeking to lose weight and especially those who cannot exercise, there is a need for a device that can accurately...

BTEX is a complex group of aromatic volatile organic compounds (Benzene, Toluene, Ethylbenzene, and Xylenes) associated with automobile exhaust pollution. Many epidemiological studies have linked elevated levels of BTEX to adverse human health effects. Measuring BTEX usually requires the use of gas chromatography and mass spectrometry (GC-MS)....

Electrochemical sensors that can quickly, selectively, and sensitively detect unknown chemicals in air or water are vital for many applications. These include environmental monitoring, biomedical diagnostics, security applications, and food and drinking water safety. Current electrochemical sensors fail to detect low concentrations of important...

Electrochemical sensors are widely used in numerous chemical and medical applications to detect concentrations of analytes. Electrical sensors are also widely used to determine analyte concentrations detecting molecular binding-induced conductance or impedance changes in electrical materials. Although both sensing techniques have proven extremely...