Sensing Application — ChemFET Sensor: nanorods of nickel-substituted Metal–Organic framework for detection of SO2

6 measurement groups · 30 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

Ni3HHTP2 MOF ChemFET channel on Au/SiO2/Si · Electrode

Calibration for SO2 concentration; response/recovery at 875 ppb SO2 with Vgs = -2 V and Vds = 0.5 V.

Atmosphere: dry air dilution; room temperature
Geometry: Ni3HHTP2 ChemFET
Context: pristine Ni3HHTP2 MOF active channel
Measurement source: 6 · 4 ChemFET sensing · Figs. 10-11; supplementary Fig. 2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
SO2 calibration normalised DeltaI at 1125 ppb	approximately 0.47	—	approx +/- 0.03	Figure Axis Approximate	7 · Figure page · Fig. 10
SO2 calibration normalised DeltaI at 625 ppb	approximately 0.00	—	approx +/- 0.02	Figure Axis Approximate	7 · Figure page · Fig. 10
SO2 recovery time at 875 ppbMarked as a best value within this paper	32 s	—	—	Text Exact Reported	6 · 4 ChemFET sensing · Fig. 11
Response/recovery drain-source voltage	0.5 V	—	—	Caption Exact Reported	7 · Figure caption · Fig. 11
Response/recovery gate voltage	-2 V	—	—	Caption Exact Reported	7 · Figure caption · Fig. 11
SO2 response time at 875 ppbMarked as a best value within this paper	13 s	—	—	Text Exact Reported	6 · 4 ChemFET sensing · Fig. 11

Ni3HHTP2 MOF ChemFET channel on Au/SiO2/Si · Electrode

SO2, CO, C2H2, NO2 and CH4 at 625 ppb for selectivity; sensitivity plotted versus concentration.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Selectivity normalised response for C2H2 at 625 ppb	approximately 0.5 normalised DeltaI/I	—	approx +/- 0.1	Figure Axis Approximate	7 · Figure page · Fig. 9c
Selectivity normalised response for CH4 at 625 ppb	approximately 0.3 normalised DeltaI/I	—	approx +/- 0.1	Figure Axis Approximate	7 · Figure page · Fig. 9c
Selectivity normalised response for CO at 625 ppb	approximately 3 normalised DeltaI/I	—	approx +/- 0.1	Figure Axis Approximate	7 · Figure page · Fig. 9c
Selectivity normalised response for NO2 at 625 ppb	approximately 0.4 normalised DeltaI/I	—	approx +/- 0.1	Figure Axis Approximate	7 · Figure page · Fig. 9c
Selectivity normalised response for SO2 at 625 ppbMarked as a best value within this paper	approximately 6 normalised DeltaI/I	—	approx +/- 0.1	Figure Axis Approximate	7 · Figure page · Fig. 9c
SO2 sensitivity at about 1000 ppbMarked as a best value within this paper	approximately 4.2%	—	approx +/- 0.3%	Figure Axis Approximate	7 · Figure page · Fig. 9b
SO2 sensitivity at 625 ppb	approximately 1.5%	—	approx +/- 0.2%	Figure Axis Approximate	7 · Figure page · Fig. 9b

Ni3HHTP2 MOF ChemFET channel on Au/SiO2/Si · Electrode

SO2 concentrations 625, 750, 875, 1000 and 1125 ppb; Vds = 0.5 V; transfer curves versus Vgs.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Approximate drain current at 1125 ppb SO2 and Vgs -10 V	approximately 116 uA	—	approx +/- 3 uA	Visual Estimate Approximate	6 · Figure page · Fig. 7
Approximate drain current at 625 ppb SO2 and Vgs -10 V	approximately 167 uA	—	approx +/- 3 uA	Visual Estimate Approximate	6 · Figure page · Fig. 7
Approximate drain current before SO2 exposure at Vgs -10 V	approximately 172 uA	—	approx +/- 3 uA	Visual Estimate Approximate	6 · Figure page · Fig. 7
Gas chamber volume	approximately 8 cm3	—	approximately	Text Approximate	4 · 4 ChemFET sensing
Sensing measurement temperature condition	room temperature	—	—	Text Qualitative	4 · 4 ChemFET sensing
SO2 lower detection limitMarked as a best value within this paper	625 ppb	0.625 ppm	—	Text Exact Reported	4 · 4 ChemFET sensing · Fig. 7
OSHA SO2 permissible exposure limit cited	5 ppm	5000 ppb	—	Text Exact Reported	1 · Introduction

Ni3HHTP2 MOF ChemFET channel on Au/SiO2/Si · Electrode

Dynamic SO2 sensing curve with labelled exposures at 1000, 875, 750 and 625 ppb in the SI plot.

Atmosphere: not specified in SI plot; main sensing experiments used dry air dilution at room temperature
Geometry: Ni3HHTP2 ChemFET
Context: pristine Ni3HHTP2 MOF active channel
Measurement source: 1 · Supporting Supplementary · Figure 1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Supplementary dynamic minimum normalised response at 1000 ppb SO2	approximately 1.2 normalised DeltaI	—	approx +/- 0.2	Figure Axis Approximate	1 · Supporting Supplementary · Figure 1
Supplementary dynamic minimum normalised response at 625 ppb SO2	approximately 3.5 normalised DeltaI	—	approx +/- 0.3	Figure Axis Approximate	1 · Supporting Supplementary · Figure 1
Supplementary dynamic minimum normalised response at 750 ppb SO2	approximately 3.2 normalised DeltaI	—	approx +/- 0.3	Figure Axis Approximate	1 · Supporting Supplementary · Figure 1
Supplementary dynamic minimum normalised response at 875 ppb SO2	approximately 2.1 normalised DeltaI	—	approx +/- 0.2	Figure Axis Approximate	1 · Supporting Supplementary · Figure 1

Ni3HHTP2 MOF ChemFET channel on Au/SiO2/Si · Electrode

Repeatability cycling for Ni3HHTP2 sensor at 875 ppb SO2, plotted as normalised DeltaI versus time.

Atmosphere: not specified in SI plot; main sensing experiments used dry air dilution at room temperature
Geometry: Ni3HHTP2 ChemFET
Context: pristine Ni3HHTP2 MOF active channel
Measurement source: 2 · Supporting Supplementary · Figure 2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Supplementary repeatability baseline normalised response	approximately 4.3 normalised DeltaI	—	approx +/- 0.2	Figure Axis Approximate	2 · Supporting Supplementary · Figure 2
Supplementary repeatability cycle count at 875 ppb SO2	three exposure/recovery cycles visible	—	—	Visual Estimate Approximate	2 · Supporting Supplementary · Figure 2
Supplementary repeatability minimum normalised response at 875 ppb SO2	approximately 2.2 normalised DeltaI	—	approx +/- 0.2	Figure Axis Approximate	2 · Supporting Supplementary · Figure 2

Ni3HHTP2 MOF ChemFET channel on Au/SiO2/Si · Electrode

625 ppb SO2; Vds 0.2-0.5 V in 0.1 V steps before and after exposure.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Approximate SO2 response difference at Vds 0.2 V	approximately 1-2 uA decrease at Vgs near 0 V	—	approx +/- 1 uA	Visual Estimate Approximate	5 · Figure page · Fig. 6
Approximate SO2 response difference at Vds 0.5 VMarked as a best value within this paper	approximately 4-5 uA decrease at Vgs near 0 V	—	approx +/- 1 uA	Visual Estimate Approximate	5 · Figure page · Fig. 6
Selected Vds for further SO2 sensingMarked as a best value within this paper	0.5 V	—	—	Text Exact Reported	4 · 4 ChemFET sensing · Fig. 6