Chemistry Reference
In-Depth Information
Fig. 7.1 Semi-quantitative holographic lab-on-a-chip devices. a Wax printing using Xerox
ColorQube 8570, b patterned filter paper, c Hot plate treatment at 150
°
C for 2 min. d Assembly of
the holographic sensors on paper-based micro
uidic devices. Quantification of analytes in samples
of e urine, f whole blood, g water and h milk. i A prototype of a holographic micro
fl
fl
uidic device
using micro
uidics, and the readouts may be corrected [
5
,
42
]. Moving forward,
practical approaches require a lab-on-a-chip assay to achieve a commercial device
[
43
fl
h illustrates a range of holographic sensors that can be inte-
grated with paper-based micro
47
]. Figure
7.1
e
-
-
uidic devices. Figure
7.1
i shows a lab-on-a-chip
device that allows multiplexing holographic sensors.
fl
7.4 Readouts with Smartphones and Wearable Devices
Medical smartphone app readers can enable the decentralisation of healthcare
through low-cost and highly portable point-of-care diagnostics. A generic smart-
phone algorithm was developed and tested for the quanti
cation of colorimetric
