@inproceedings{3af81e37f25942f4867058f4e1a2437c,
title = "Flow compensation in a MEMS dual-thermal conductivity detector for hydrogen sensing in natural gas",
abstract = "Conventional thermal conductivity detectors (TCDs) demonstrate a flow dependence. The approach presented here to reduce the flow dependence is based on the on-line flow compensation using two thin-film sensors on membranes in parallel on the same chip that are differentially operated. These are laterally identically, but with a different depth of the detection chamber, resulting in different quasi-static sensitivities to the thermal conductivity of the sample gas. The effects of conduction and convection in the structure have been studied using COMSOL Multiphysics. First prototypes have been fabricated and are presently tested.",
keywords = "Thermal conductivity, detector, flow compensation, Hydrogen sensor, MEMS",
author = "{de Graaf}, G and {Abarca Prouza}, Accel and RF Wolffenbuttel",
note = "Accepted Author Manuscript; TRANSDUCERS 2015, Anchorage, USA ; Conference date: 21-06-2015 Through 25-06-2015",
year = "2015",
month = aug,
day = "6",
doi = "10.1109/TRANSDUCERS.2015.7181145",
language = "English",
isbn = "978-1-4799-8956-0",
publisher = "IEEE Society",
pages = "1203--1206",
editor = "TW Kenny and VM Bright",
booktitle = "Proceedings of the 2015 Transducers - 2015 18th Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015",
}