C2Sense is addressing the increased demand for air quality measurements in the Environmental industry by developing pollutant sensors that are small, robust, and low power enough to be widely deployed at in outdoor, indoor, or wearable locations, and interface with existing electronic devices of all kinds.
Humans can live for weeks without food, days without water, but only minutes without oxygen. As the world becomes more polluted, and technology becomes more pervasive, there is an increasing need to understand what is in this air. Over the last century, the rise in industrialization and corresponding air pollution has had devastating effects on nature and serious consequences on human health. Two main classes of pollutants are responsible for poor outdoor air quality (AQI); particulate matter which has been shown to increase the risk of heart attack, and gaseous pollutants that cause respiratory damage and chronic illnesses. Outdoor pollutants are also found indoors, as well as volatile organic compounds like formaldehyde, which are carcinogenic. Carbon dioxide is a considerable problem indoors as well, since high levels of CO2 can cause drowsiness, headaches, and lack of productivity.
Recent breakthroughs in commercial gas sensors have addressed the required sensitivity, response time, miniaturization, and power consumption of this market. However, existing technology lacks accurate responses in complex environments, and often has a narrow measurement range and inability to cope with variable environmental conditions, preventing them from widespread deployment. Modern gas sensors that are small size, low power and low cost can make a significant impact in this industry and on the planet.
THE C2 SOLUTION
C2Sense is actively developing gas sensors that combine the most desirable features of traditional gas sensor technology; exquisitely high selectivity in a tiny footprint. Our technology uses the fundamental sensing approach of chemiresistance, but leverages a unique combination of basic chemistry, stabilizing matrix components, and embedded carbon nanotubes (CNTs) to impart selectivity. Simply put, when a mixed gas stream that contains a target compound meets a CNT chemiresistive sensor, a chemical reaction occurs between the selected gas molecules and the molecular selectors within the sensor. This reaction causes a distinct change in the sensor’s electric current, which can be measured and translated into information about the presence and concentration of the target compound. Our molecular-level approach means that our sensors are able to be miniaturized into ultra-small footprints that require very few supporting electronics, and these superior sensors largely eliminate cross-sensitivities, false positives, the degrading effects of humidity and temperature, and other challenges which have historically plagued small form-factor sensors.
The highly specific and robust nature of C2Sense products provides exquisite sensitivity and selectivity without frequent maintenance. Our pilots in nuclear waste sites and livestock facilities have put our sensors to the test in extreme environments, and we have successfully used our sensors to detect 80+ proof-of-concept gases. Currently, the size of our sensor (1.5 x 0.5 mm) allows for truly mobile applications and a wide variety of packaging, including PCB-mounted form factors that can seamlessly integrate directly into existing manufacturing lines. Our sensing approach makes it possible for our sensors to provide large volumes of useful information despite their small size and relatively simple construction, enabling high quality personal or local air quality measurements, that were previously only accessible with large air quality monitoring stations.
Mobile applications, pervasive integration into many electronic devices, and straightforward multiplexing
Sensing without cross-sensitivities and resistance to chemical and environmental interferents
Designed with Application-specific Requirements In Mind
Dynamic technical tuneability, a SWAP-C with parity or advantage over existing technology, specialized sensor performance, calibration infrequent or not needed.