TABLE 5.3

The Metal Oxide Nanomaterials Applied in LOC Devices for Various Applications and Detection Techniques

Nanomaterial/electrode

Applications

Types of sensors

Detection technique

Linear range

LOD

Reference

ZnO NR/Si/SiO2 Chip

Vapor

Gas Sensor

Chemiresistor

Chemiresistive

performance

0.2–5 ppm

–

[ 20]

ZnO nanocombs/Si chip-

CMOS

CO

Gas Sensor

FET Sensor

Resistance different

250–500 ppm

250 ppm

[ 21]

ZnO nanowires/Si/SiO2 Chip

H2S

Gas Sensor

Chemiresistor

Chemiresistive

performance

5–200 ppb

5 ppb

[ 22]

CoZn-FeONPs/microfluidic

immunoarray device

Cancer Biomarker

Detection

Electrochemical

Immunoassay

Amperometry

3.9–5 x 102

0.19 fgm/L

[ 23]

AuNPs@Fe3O4- CMK-8/

glass-PDMS microfluidic

IgG anti-T. canis

Immunosensor

Electrochemical

Immunosensor

Amperometry

0.1–100 ng/mL

0.10 ng/mL

[ 24]

MNPs-Antibodies/MnO2

NFs/glass-PDMS

microfluidic

Salmonella

Biosensor

Colorimetric Salmonella

Biosensor

Colorimetric and

smartphone device

4.4 × 101–4.4 × 106

CFU/mL

44 CFU/mL

[ 25]

Microporous manganese-

Reduced graphene oxide

nanocomposite

Cardiac Biomarker

Electrochemical Biosensor

Impedance

0.008–20 ng/mL

8.0 pg/mL

[ 26]

QD-pAb- MnO2 NFs/glass-

PDMS microfluidic

Salmonella

Biosensor

Fluorescent

Biosensor

Fluorescent probes

1.0 × 102–1.0 ×

107 CFU/mL

43 CFU/mL

[ 27]

82

Bioelectronics