Electrical and AFM Structural Studies of a Humidity Sensors Based on Keratin (Human Hair)
نویسنده
چکیده
In this paper we present a humidity sensor based on keratin which is present in human hair. Noting keratin’s ability to absorb humidity and undergo structural changes, we studied the change in its electrical properties as a function of humidity and temperature. The electrical properties change due to the change in water percentage in keratin as well as due to volumetric changes. The volumetric changes were studied using a Multimode AFM.
منابع مشابه
Fabrication and Characterization of Polymer Blend Doped With Metal Carbide Nanoparticles for Humidity Sensors
Nanocomposites films of (polymer blend-ceramics) were prepared from (PVA-PAA) blend and (PVA-PAA) blend doped with niobium carbide nanoparticles for humidity sensors have low cost, easy fabrication, high sensitivity, lightweight and high corrosion resistance. The structural, electrical and optical properties of (PVA-PAA-NbC) nanocomposites have been studied. The D.C electrical properties of (PV...
متن کاملThe Effect of Percentage of Remaining Hair Bred and Ambient Relative Humidity on Electrical Resistance of Cashmere Fiber
Among different types of controlling systems, the ON/OFF digital relative humidity control was used for measuring electrical properties of cashmere fibers to make the ambient relative humidity fixed. To achieve this goal the required hardware and software were designed and fabricated. The electrical resistance of fine and coarse hair cashmere fiber was measured by charge and discharge condenser...
متن کاملSpirit Collections: Accelerated Aging Studies concerning the Stability of Keratin in Ethanol and Formalin
-The keratins are a closely related family of chemically stable proteins composing mammalian hair, horn, hooves, and avian feathers . Sheep hair (wool) has been much studied chemically because of its economic value. To our knowledge, no studies have been conducted on the long-term stability of other keratins from a museum perspective. We present here differences in the stability of feathers and...
متن کاملModeling of Air Relative Humidity Effect on Adhesion Force in Manipulation of Nano-Particles and its Application in AFM
In this paper, the effect of air relative humidity and capillary force on contact geometry of surfaces based on JKR model by Atomic force microscopy was investigated in order to manipulate nano-particles. With transition from macro to nano-scale, the effect of surface forces becomes more significant in comparison with inertial force. Because contact mechanics models are based on surface energy ...
متن کاملDesigning and Dismounting an Intelligent System of Irrigation Management for Greenhouse based on Delphi Software
The drought continuity and also restricting watery sources caused agriculture section forgetold flooding methods for optimum water exploitation and proceeding new irrigation systems.New generation of irrigation systems called intelligent systems is a new solution leading toexploiting water increase to higher than 80%. In order to measure sensors and to controlprocessors in designing and dismoun...
متن کامل