Table 1 Comparison of various biosensors based on nanosized materials detecting (strept)avidin via optical or electrochemical methods.

From: Disordered array of Au covered Silicon nanowires for SERS biosensing combined with electrochemical detection

Ref.

Sensing Material

Signal Transduction

Target

Low detection limit

Working range

Cui 200124

SiNW FET*

Conductance

Streptavidin

10 pM

 

Haes 200237

AgNPs

SPR§

Streptavidin

1 pM

1 pM–100 pM

Cheng 200338

AuNPs/optical fiber

SPR

Streptavidin

100 pM

100 pM–30 nM

Kim. 200739

μAg particles

SERS

Avidin

15 nM

15 nM–10 μM

Hsiao 200940

Poly–SiNW FET

Conductance

Streptavidin

0.17 pM

0.17 pM–1.7 nM

Hong, 201041

Ordered Macroporous Ag thin films

SPR

Avidin

100 pM

100 pM–200 nM

Choi 201042

ZnO NW FET

Conductance

Streptavidin

2.5 nM

2.5 nM–25 nM

Guo 201043

Au NP/CNT

SPR

Streptavidin

500 pM (calculated)

1 nM–400 nM

Geagea 201544

Polymer coated AgNPs

Impedance

Avidin

1.5 nM

 
  1. *field effect transistor (FET).
  2. §surface plasmon resonance (SPR).
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