2 Bio-microelectromechanical Systems (BioMEMS) …
25
Table 2.1
(continued)
BioMEMS platform
Main components
Fabrication strategy Mechanisms of
operation
Detected analyte
Specifics
References
PAD smartphone
accessory for
biomarkers
• Smartphone
application
• Test strips
• Smartphone case with
inlet slot
• Smartphone
The indicator strip
consisted of a cutout
of a pHydrion
Spectral plastic pH
indicator strip for
sweat testing and a
strip for saliva
testing. The
reference strip was
made of white plastic
material. The flash
diffuser consists of a
PDMS membrane.
The smartphone case
was 3D printed in
order to isolate the
test strip from
external light
The app was loaded,
and the strip was
selected for the
readout. The
calibration data
updated while the
sample was inserted
pH in saliva and
sweat
This device allowed
noninvasive
real-time analysis
by means of
disposable test
strips
Oncescu
et al. (2013)
(continued)