publication . Other literature type . Preprint . Article . 2018

Humidity Responsive Photonic Sensor based on a Carboxymethyl Cellulose Mechanical Actuator

Matthew Hartings; Kevin O. Douglass; Claire Neice; Zeeshan Ahmed;
Open Access English
  • Published: 01 Jul 2018
Abstract
<jats:p>We describe an intuitive and simple method for exploiting humidity-driven volume changes in carboxymethyl cellulose (CMC) to fabricate a humidity responsive actuator on a glass fiber substrate. We optimize this platform to generate a photonic-based humidity sensor where CMC coated on a fiber optic containing a fiber Bragg grating (FBG) actuates a mechanical strain in response to humidity changes. The humidity-driven mechanical deformation of the FBG results in a large linear change in Bragg resonance wavelength over the humidity range of 5 %RH (relative humidity) to 40 %RH. The measurement uncertainty over this range is ± 2 %RH.</jats:p>
Subjects
free text keywords: Article, Chemistry, humidity actuator, humidity sensor, cellulose, fiber Bragg sensor, Humidity, Materials science, Composite material, Actuator, Carboxymethyl cellulose, medicine.drug, medicine, Photonic sensor, Instrumentation, Electrical and Electronic Engineering, Materials Chemistry, Electronic, Optical and Magnetic Materials, Surfaces, Coatings and Films, Condensed Matter Physics, Metals and Alloys, Relative humidity, Fiber Bragg grating, Photonics, business.industry, business, Optical fiber, law.invention, law, Glass fiber
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