Tip-stable flow humidification using saturated salt solution colloid

摘要

Controlling humidity is beneficial for a number of sensing applications, as it removes the need to calibrate the response of a large number of sensor elements for humidity. Specifically, it is important for an organic field effect transistor, ("OFET"), response. Humidity of gas flow is easily controlled by passing the flow over saturated salt solutions, but saturated salt solutions are not conducive to handling, particularly inside of electronic modules. Tipping can occur thereby increasing the risk of contaminating the remainder of the equipment, such as an integrated sensor module. By replacing the saturated salt solution with a colloid, good control can be retained while improving stability for handling and moving. One way to turn a saturated salt solution into a colloid is to use calcium formate thickened with xanthan gum.