US 11,815,431 B2
Electrical gas detector comprising an arene-functionalized nanowire
Maxim Shkunov, Guildford (GB); Marios Constantinou, Surrey (GB); and Angela Danil De Namor, Surrey (GB)
Assigned to University of Surrey
Appl. No. 16/464,624
Filed by UNIVERSITY OF SURREY, Surrey (GB)
PCT Filed Nov. 27, 2017, PCT No. PCT/GB2017/053564
§ 371(c)(1), (2) Date May 28, 2019,
PCT Pub. No. WO2018/100346, PCT Pub. Date Jun. 7, 2018.
Claims priority of application No. 1620234 (GB), filed on Nov. 29, 2016.
Prior Publication US 2020/0057019 A1, Feb. 20, 2020
Int. Cl. G01N 27/414 (2006.01); G01N 33/00 (2006.01)
CPC G01N 27/4141 (2013.01) [G01N 27/4146 (2013.01); G01N 33/0047 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A gas detector for detecting benzene, toluene, ethylbenzene or xylene (a BTEX gas), the detector comprising at least one transducer comprising:
a field effect transistor (FET) comprising a source electrode, a gate electrode, and a drain electrode;
at least one silicon nanowire with a native oxide shell layer, the at least one silicon nanowire extending and coupled between the source electrode and the drain electrode; and
an arene compound, wherein the arene compound is disposed on the at least one silicon nanowire and is configured to capture a BTEX gas,
wherein an electronic characteristic of the transducer changes when a BTEX gas is captured by the arene compound.