PMID- 29986510
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180710
LR  - 20181114
IS  - 1424-8220 (Electronic)
IS  - 1424-8220 (Linking)
VI  - 18
IP  - 7
DP  - 2018 Jul 7
TI  - Research on a Fast-Response Thermal Conductivity Sensor Based on Carbon Nanotube 
      Modification.
LID - 10.3390/s18072191 [doi]
LID - 2191
AB  - Aiming at solving the slow-response problem of traditional bead-type thermal 
      conductivity gas sensors, a fast-response thermal conductivity gas sensor can be 
      made by using multiwalled carbon nanotubes (MWNTs), combined with the technology 
      of carrier modification, to modify the performance of the sensor carrier. The 
      carrier material, granular nanoscale γ-Al(2)O(3)/ZrO(2), was synthesized by 
      chemical precipitation, and its particle size was found to be 50(-)70 nm through 
      SEM. After the carrier material was wet-incorporated into carbon nanotubes, the 
      composite carrier γ-Al(2)O(3)/ZrO(2)/MWNTs was obtained. The results show that 
      the designed thermal conductivity sensor has a fast response to methane gas, with 
      a 90% response time of 7 s and a recovery time of 16 s. There is a good linear 
      relationship between the sensor output and CH(4) gas concentration, with an average 
      sensitivity of 1.15 mV/1% CH(4). Thus, the response speed of a thermal conductivity 
      sensor can be enhanced by doping carbon nanotubes into γ-Al(2)O(3)/ZrO(2).
FAU - Zhang, Hongquan
AU  - Zhang H
AD  - School of Automation, Harbin Engineering University, Harbin 150001, China. 
      zhanghq1@126.com.
AD  - School of Materials Science and Chemical Engineering, Harbin Engineering 
      University, Harbin 150001, China. zhanghq1@126.com.
FAU - Shen, Bin
AU  - Shen B
AUID- ORCID: 0000-0003-1991-864X
AD  - School of Materials Science and Chemical Engineering, Harbin Engineering 
      University, Harbin 150001, China. shenbin112l@163.com.
AD  - School of Safety Engineering, Heilongjiang University of Science & Technology, 
      Harbin 150022, China. shenbin112l@163.com.
FAU - Hu, Wenbin
AU  - Hu W
AD  - School of Automation, Harbin Engineering University, Harbin 150001, China. 
      huwenbin0119@hrbeu.edu.cn.
FAU - Liu, Xinlei
AU  - Liu X
AD  - School of Safety Engineering, Heilongjiang University of Science & Technology, 
      Harbin 150022, China. lxl2020@163.com.
LA  - eng
PT  - Journal Article
DEP - 20180707
PL  - Switzerland
TA  - Sensors (Basel)
JT  - Sensors (Basel, Switzerland)
JID - 101204366
PMC - PMC6068861
OTO - NOTNLM
OT  - Al2O3
OT  - carbon nanotubes
OT  - gas sensor
OT  - thermal conductivity
COIS- The authors declare no conflict of interest.
EDAT- 2018/07/11 06:00
MHDA- 2018/07/11 06:01
PMCR- 2018/07/01
CRDT- 2018/07/11 06:00
PHST- 2018/04/17 00:00 [received]
PHST- 2018/06/28 00:00 [revised]
PHST- 2018/07/04 00:00 [accepted]
PHST- 2018/07/11 06:00 [entrez]
PHST- 2018/07/11 06:00 [pubmed]
PHST- 2018/07/11 06:01 [medline]
PHST- 2018/07/01 00:00 [pmc-release]
AID - s18072191 [pii]
AID - sensors-18-02191 [pii]
AID - 10.3390/s18072191 [doi]
PST - epublish
SO  - Sensors (Basel). 2018 Jul 7;18(7):2191. doi: 10.3390/s18072191.