Self-Heated Thermoresistive Flow Sensor Coated with Parylene-C for Reliability Enhancement by Using 0.35μM CMOS MEMS Technology

Wei Xu, Xiaoyi Wang, Basant Mousa, Maria Paszkiewicz, Yi Kuen Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)

Abstract

A Self-Heated Thermoresistive Flow (SHTF) sensor with the coated Parylene-C barrier layer, is reported by using a 0.35 μm 2P4M CMOS MEMS technology. For N2 gas flow, the SHTF sensor achieves the maximum normalized sensitivity (S∗ = Sc/P) of 171 mV/(m/s)/W, while keeps a low power consumption P < 18.3 mW for the input gas flow from 0 to 10 m/s. Moreover, the achieved accuracy of ±0.04 m/s within the linear range of 0∼2.5 m/s, enabling this robust flow sensor (more than 9 years of working time) for the indoor airflow measurement even in the moist condition. Therefore, this highly sensitive and long term reliable SHTF sensor with the coated Parylene-C layer will be a very promising flow sensing node for the smart Energy-efficient Buildings (EeBs).

Original languageEnglish
Title of host publication2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1913-1916
Number of pages4
ISBN (Electronic)9781728120072
DOIs
Publication statusPublished - 1 Jun 2019
Externally publishedYes
Event20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII - Berlin, Germany
Duration: 23 Jun 201927 Jun 2019

Publication series

Name2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII

Conference

Conference20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII
Country/TerritoryGermany
CityBerlin
Period23/06/1927/06/19

Keywords

  • CMOS MEMS
  • Long Term Reliability
  • Parylene-C Coating
  • SHTF Sensor

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